32705 ⎘
Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium; Boron or aluminium; Oxides or hydroxides thereof Alumina
Hydrothermal hydrocatalytic treatment of biomass using water tolerant catalysts
#1802Method for preparing porous alumina
#1803Method and system for forming plug and play metal catalysts
#1804Fischer tropsch reactor
#1805Three-way catalytic converter using nanoparticles
#1806Process for isomerizing an aromatic C8 cut in the presence of a catalyst based on an euo zeolite and a particular sodium content
#1807INCREASED LIFETIME PREREFORMER CATALYST
#1808Sulfur tolerant catalysts for hydrogen production by carbon dioxide reforming of methane-rich gas
#1809Catalysts for renewable hydrogen production from oxygenated feedstocks
#1810Catalyst for the oxychlorination of ethylene to 1, 2-dichloroethane
#1811Method of modifying nano-porous gas-reforming catalyst with high-temperature stability
#1812Processes for production of isobutene and tertiary butanol
#1813Catalyst and catalyst carrier
#1814Metal catalyst composition
#1815Catalytic hydrogenation of fluoroolefins, alpha-alumina supported palladium compositions and their use as hydrogenation catalysts
#1816ALKYLENE OXIDE CATALYST AND USE THEREOF
#1817Metal-carbon composite supported catalyst for hydrogen production using co-evaporation and method of preparing the same
#1818Process for preparing a cobalt-containing hydrocarbon synthesis catalyst precursor
#1819Implantation of Ni nano domains in refractory metal oxide support by means of sol-gel encapsulation—an effective solution to coke formation in the partial oxidation of natural gas
#1820High activity hydrodesulfurization catalyst, a method of making a high activity hydrodesulfurization catalyst, and a process for manufacturing an ultra-low sulfur distillate product
#1821Catalyst for use in hydrotreatment, comprising metals from groups VIII and VIB, and preparation with citric acid and C1-C4 dialkyl succinate
#1822Catalysts for synthesis of liquid hydrocarbons using syngas and preparation methods thereof
#1823Preparing phosphorus containing alumina support by sol-gel method for Fischer-Tropsch synthesis and catalyst preparation thereof
#1824Ammonia oxidation catalyst, exhaust gas purification device using same, and exhaust gas purification method
#1825Preparation of diesel oxidation catalyst via deposition of colloidal nanoparticles
#1826Porous aluminum oxide
#1827Porous aluminum oxide
#1828Catalyst for Fischer-Tropsch synthesis having excellent heat transfer capability
#1829Epoxidation process
#1830Fischer-Tropsch process for converting synthesis gas to a lower olefin
#1831Catalyst and a manufacturing method thereof
#1832Process for hydrotreating heavy raw oils
#1833Method and system for forming plug and play metal compound catalysts
#1834Thioresistant catalyst, manufacturing process and use in selective hydrogenation
#1835Method for producing alicyclic carboxylic acid and catalyst used in same
#1836Nanocatalysts for hydrocracking and methods of their use
#1837Process for the preparation of a catalyst using at least one rapid drying stage and at least one fluidised bed drying stage and use thereof for fischer-tropsch synthesis
#1838Process for the preparation of a catalyst using a rapid drying stage and use thereof for Fischer-Tropsch synthesis
#1839Oligomerization of alpha olefins using metallocene-SSA catalyst systems and use of the resultant polyalphaolefins to prepare lubricant blends
#1840Nickel-M-alumina xerogel catalyst, method for preparing the same, and method for preparing methane using the catalyst
#1841Excess enthalpy upon pressurization of dispersed palladium with hydrogen or deuterium
#1842Method of simultaneously removing sulfur and mercury from hydrocarbon material using catalyst by means of hydrotreating reaction
#1843Catalyst and method of manufacture
#1844Process for production of carbon nanotube
#1845Three-way catalyst having an upstream single-layer catalyst
#1846Methods for producing zeolite catalysts and methods for producing alkylated aromatic compounds using the zeolite catalysts
#1847Method and system for forming plug and play oxide catalysts
#1848Excess enthalpy upon pressurization of nanosized metals with deuterium
#1849Catalyst support materials with oxygen storage capacity (OSC) and method of making thereof
#1850Single reaction synthesis of texturized catalysts
#1851Dehydrogenation of alkanols to increase yield of aromatics
#1852METHODS AND APPARATUSES FOR ISOMERIZATION OF PARAFFINS
#1853Process for the epoxidation of fatty acids, their esters and mixtures thereof
#1854Reforming catalysts with tuned acidity for maximum aromatics yield
#1855Activator compositions, their preparation, and their use in catalysis
#1856Integrated hydroprocessing, steam pyrolysis and slurry hydroprocessing of crude oil to produce petrochemicals
#1857Platinum-free monometallic and bimetallic nanoparticles as ring-opening catalysts
#1858Ethanol manufacturing process over catalyst having improved radial crush strength
#1859Selective hydrogenation catalyst and methods of making and using same
#1860Porous inorganic body
#1861Catalyst manufacturing method
#1862Hydrogenation catalyst
#1863Process for the hydrotreatment of vegetal materials
#1864Method for processing a sulfur-containing gas and a hydrogenation catalyst used therefor
#1865Catalyst and method for the direct synthesis of dimethyl ether from synthesis gas
#1866Catalytically active body for the synthesis of dimethyl ether from synthesis gas
#1867Catalytically active body for the synthesis of dimethyl ether from synthesis gas
#1868Process to make propylene from isobutanol by dehydration and subsequent cracking
#1869Composition and a method of making and use of such composition
#1870Process of producing oxalate by CO gas phase method
#1871Process for hydrotreating a hydrocarbon cut with a boiling point of more than 250° C. in the presence of a sulphide catalyst prepared using a cyclic oligosaccharide
#1872Catalyst treatment
#1873Ammonia synthesis catalyst and ammonia synthesis method
#1874High thermal stable hollow mesoporous nanotubes, preparation and application for the same
#1875Process for the preparation of a catalyst which can be used in hydrotreatment and hydroconversion
#1876Process of producing zeolite-based catalysts for converting oxygenates to lower olefins
#1877METHOD AND APPARATUS FOR FORMING NANOPARTICLES
#1878Process for selective hydrogenation in the presence of a catalyst based on a metal from group VIII prepared using at least one cyclic oligosaccharide
#1879Substrate monolith comprising SCR catalyst
#1880Method of preparing and utilizing a catalyst system for an oxidation process on a gaseous hydrocarbon stream
#1881Attrition resistant supports for fischer-tropsch catalyst and process for making same
#1882Catalyst for aqueous phase reforming of biomass-derived polyols and preparation method thereof
#1883Process for dehydration and isomerization of C4 alcohols using an amorphous solid with suitable porosity
#1884Method for preparing catalyst coating on metal base plate
#1885Catalyst, catalytic converter, and method for the production thereof
#1886Pass-through catalytic substrate including porous ceramic beveled corner portions and methods
#1887SCR on diesel particular filter and method for producing the same
#1888RESID CATALYTIC CRACKER AND CATALYST FOR INCREASED PROPYLENE YIELD
#1889PROCESS FOR MAXIMUM DISTILLATE PRODUCTION FROM FLUID CATALYTIC CRACKING UNITS (FCCU)
#1890Catalytic system for catalytic partial oxidation processes with a short contact time
#1891Catalyst and method of manufacture
#1892Catalyst compositions for conversion of vegetable oils to hydrocarbon products in the diesel boiling range and process of preparation thereof
#1893Process for producing a supported silver catalyst
#1894CATALYST COMPOSITION FOR SELECTIVE HYDROGENATION WITH IMPROVED CHARACTERISTICS
#1895Process for producing phosphorus modified zeolite catalysts
#1896Oxidation catalyst for internal combustion engine exhaust gas treatment
#1897Method for producing aromatic hydrocarbons and aromatic hydrocarbon production plant
#1898Fibrous composite catalytic structure having at least three solid phases
#1899Sulphur reduction catalyst additive composition in fluid catalytic cracking and method of preparation thereof
#1900Catalyst and method of catalyst manufacture
#1901Process for preparation of hydroxyacetone or propylene glycol
#1902Method of fabricating fuel reforming catalyst for SOFC power generating system
#1903Method and system for forming plug and play metal catalysts
#1904SUPPORTED CATALYST FOR DIRECT DEHYDROGENATION OF n-BUTANE AND PREPARING METHOD OF BUTENES FROM n-BUTANE USING THE SAME
#1905Method of manufacturing catalyst coating solution and catalyst body using the same
#1906Implantation of Ni nano domains in refractory metal oxide support by means of sol-gel encapsulation—an effective solution to coke formation in the partial oxidation of natural gas
#1907Char supported catalysts for syngas cleanup and conditioning
#1908Three-way catalyst having a upstream multi-layer catalyst
#1909Process for simultaneous cracking of lighter and heavier hydrocarbon feed and system for the same
#1910Catalysts, activating agents, support media, and related methodologies useful for making catalyst systems especially when the catalyst is deposited onto the support media using physical vapor deposition
#1911METHOD FOR PRODUCING CHLORINE USING FIXED BED REACTOR
#1912Process for reducing the total acid number in refinery feedstocks
#1913Process for oxidative desulfurization with integrated sulfone decomposition
#1914Process for oligomerizing olefins
#1915Catalyst compositions for producing mixed alcohols
#1916Method for producing composites of aluminum oxide and cerium/zirconium mixed oxides
#1917Ceria zirconia alumina composition with enhanced thermal stability
#1918Catalytic composition for production of olefins with decreased oxygenate byproducts
#1919Fischer-Tropsch synthesis
#1920Photocatalytic Panel and System for Recovering Output Products Thereof
#1921PROCESS FOR PREPARATION OF A CATALYST CARRIER
#1922PROCESSES AND APPARATUSES FOR OXIDIZING ELEMENTAL MERCURY IN FLUE GAS USING OXYCHLORINATION CATALYSTS
#1923Hydroprocessing catalyst and methods of making and using such a catalyst
#1924Catalysts for the production of hydroxy ether hydrocarbons by vapor phase hydrogenolysis of cyclic acetals and ketals
#1925Reforming catalyst
#1926Hydrotreating catalyst for hydrocarbon oil and method for producing same, and hydrocarbon oil hydrotreating method using same
#1927Method for producing surface-supported catalyst
#1928Fuel conditioning modules and methods
#1929High activity hydrodesulfurization catalyst, a method of making a high activity hydrodesulfurization catalyst, and a process for manufacturing an ultra-low sulfur distillate product
#1930Method for producing a metal-containing shell catalyst without intermediate calcining
#1931Method for stabilizing size of platinum hydroxide polymer
#1932METHOD OF FABRICATION OF NANO PARTICLE COMPLEX CATALYST BY PLASMA ION IMPLANTATION AND DEVICE FOR THE SAME
#1933CATALYST DEVICE
#1934Catalysts containing tungstate for the synthesis of alkyl mercaptan and method for the production thereof
#1935Cineole
#1936Process for producing a catalyst for the oxidation of ethylene to ethylene oxide
#1937ZINC-COMPRISING CATALYST FOR PREPARING ETHYLENE OXIDE
#1938CATALYST FOR PREPARING ETHYLENE OXIDE
#1939PROCESS TO PREPARE AN ETHANOL-DERIVATE
#1940Production of lower olefins from synthesis gas
#1941System and method for dual fluidized bed gasification
#1942Method for making hydrocarbons by using a lipid derived from a biological organism and hydrotalcite
#1943MULTIPHASE ALUMINA PARTICLE
#1944Irregularly shaped non-spherical supported catalyst, and a process for hydroconversion heavy oil fractions
#1945CO2 REFORMING CATALYST, METHOD OF PREPARING THE SAME, AND METHOD OF REFORMING CO2 USING THE CATALYST
#1946Method for synthesis of 1-decene oligomer
#1947Process for the off site regeneration of solid catalysts
#1948Olefin epoxidation process, a catalyst for use in the process, a carrier for use in preparing the catalyst, and a process for preparing the carrier
#1949Method for manufacturing olefins
#1950Method for making a catalyst composition
#1951Method for simultaneously producing carbon nanotubes and hydrogen, and device for simultaneously producing carbon nanotubes and hydrogen
#1952Catalyst for synthesis of hydrocarbons from CO and Hand preparation method thereof
#1953SUPPORTED RHODIUM SYNTHESIS GAS CONVERSION CATALYST COMPOSITIONS
#1954Catalyst for steam reforming of methanol
#1955Fluidized-bed reactor and hydrotreating method thereof
#1956Carbon oxides conversion process
#1957HYDROCARBON-DECOMPOSING POROUS CATALYST BODY AND PROCESS FOR PRODUCING THE SAME, PROCESS FOR PRODUCING HYDROGEN-CONTAINING MIXED REFORMED GAS FROM HYDROCARBONS, AND FUEL CELL SYSTEM
#1958SYSTEM AND METHOD FOR THE PRODUCTION OF LIQUID FUELS
#1959SUPPORTED COBALT CATALYSTS FOR THE FISCHER TROPSCH SYNTHESIS
#1960Catalyst carrier for a spacecraft thruster and method for preparing same
#1961Method of Making and Using a Hydrocarbon Conversion Catalyst
#1962Catalysts for fluoroolefins hydrogenation
#1963Process for production of ethanol using a mixed feed using copper containing catalyst
#1964Process for producing cyclohexylbenzene
#1965Combination catalysts based on iron for the substantial synthesis of multi-walled carbon nanotubes by chemical vapor deposition
#1966Catalysts, preparation of such catalysts, methods of using such catalysts, products obtained in such methods and uses of products obtained
#1967Catalysts, preparation of such catalysts, methods of using such catalysts, products obtained in such methods and uses of products obtained
#1968Carrier for silver catalyst, its preparation, a silver catalyst made from the same and its use
#1969Catalyst structure and hydrogenation/dehydrogenation reaction module using the same catalyst structure
#1970Fischer-Tropsch catalysts
#1971TWO-LAYER CATALYST, PROCESS FOR PREPARING SAME AND USE FOR THE MANUFACTURE OF NANOTUBES
#1972Reactor, a retained catalyst structure, and a method for improving decomposition of polysulfides and removal of hydrogen sulfide in liquid sulfur
#1973Catalyst composition useful in the catalytic reduction of sulfur compound contained in a gas stream and a method of making and using such composition
#1974Solutions and catalysts comprising group VI metal, group VIII metal, phosphorus and an additive
#1975Porous composite metal oxide, catalyst using the same, and methods for producing the porous composite metal oxide and the catalyst
#1976Methods and catalysts for the manufacture of carbon fibrils
#1977Process for the production of an olefin oxide
#1978Catalyst and methods for producing multi-wall carbon nanotubes
#1979Exhaust gas purifying catalyst and method for manufacturing the same
#1980Process of synthesis gas conversion to liquid hydrocarbon mixtures using a catalyst system containing ruthenium and an acidic component
#1981Ruthenium hybrid fischer-tropsch catalyst, and methods for preparation and use thereof
#1982Method for activating catalyst for chlorine production
#1983Treating catalysts
#1984Three-way catalyst having an upstream multi-layer catalyst
#1985Three-way catalyst having an upstream single-layer catalyst
#1986Production Method Of Trans-1,3,3,3-Tetrafluoropropene
#1987Copper-zirconia catalyst and method of use and manufacture
#1988FISCHER-TROPSCH CATALYSTS
#1989Poison resistant catalyst systems and associated processes
#1990Treated alumina hydrate material and uses thereof
#1991Combination catalysts based on iron for the substantial synthesis of multi-walled carbon nanotubes by chemical vapor deposition
#1992Alumina support, a process for preparing the support, a silver catalyst prepared from the support, and use thereof
#1993Method for preparation of dicarboxylic acids from saturated hydrocarbons or cycloaliphatic hydrocarbons by catalytic oxidation
#1994Gasifier having integrated fuel cell power generation system
#1995Optimized catalyst for catalytic reforming
#1996PROCESS FOR THE OXIDATION OF HYDROGEN CHLORIDE OVER A CATALYST HAVING A LOW SURFACE ROUGHNESS
#1997Alumina nanotube/nanorod supported hydrodesulfurization nanocatalyst, method of preparation and application
#1998Alumina support for silver catalyst, preparation and use thereof
#1999Hydrocarbon selective catalytic reduction catalyst for NOemissions control
#2000METHOD FOR ACTIVATING CATALYST FOR CHLORINE PRODUCTION AND METHOD FOR PRODUCING CHLORINE
#2001Catalyst on silica clad alumina support
#2002Monolith catalyst and use thereof
#2003Hydrogenation of aromatics and other unsaturated organic compounds
#2004Process for the production of a 1,2-diol, a 1,2-diol ether, or an alkanolamine
#2005Low temperature sulfur tolerant tar and sulfur removal with concomitant synthesis gas conditioning
#2006Support for silver catalyst in ethylene oxide production, methods for preparing the same, silver catalyst prepared therefrom, and use thereof
#2007Residue conversion process that includes a deasphalting stage and a hydroconversion stage with recycling of deasphalted oil
#2008CO SHIFT CATALYST, METHOD FOR MANUFACTURING THE SAME, AND CO SHIFT REACTOR USING CO SHIFT CATALYST
#2009Composition including a lanthanum perovskite on an alumina or aluminium oxyhydroxide substrate, preparation method and use in catalysis
#2010Method for producing catalyst for use in preferential oxidation reaction of carbon monoxide
#2011Hydrogen generating apparatus and hydrogen generating method
#2012Catalyst and process for obtaining catalyst of high activity
#2013Dual-oxide sinter resistant catalyst
#2014Catalyst comprising ruthenium and silver and/or calcium for the oxidation of hydrogen chloride
#2015Epoxidation catalyst, a process for preparing the catalyst, and a process for the production of an olefin oxide
#2016Catalyst for production of hydrogen and process for producing hydrogen using the catalyst, and catalyst for combustion of ammonia, process for producing the catalyst and process for combusting ammonia using the catalyst
#2017LIQUID FUEL PRODUCING METHOD AND LIQUID FUEL PRODUCING SYSTEM
#2018Highly dispersed metal catalyst
#2019Nanoparticle carrying method
#2020Two Component Recyclable Heterogeneous Catalyst, Process for Preparation Thereof and its Use for Preparation of Amines
#2021Method for selective hydrogenation of phenylacetylene in the presence of styrene
#2022Process for using catalyst with rapid formation of iron sulfide in slurry hydrocracking
#2023COMPOSITION OF SUPPORTED MOLYBDENUM CATALYST FOR SLURRY HYDROCRACKING
#2024Exhaust gas purification catalyst
#2025METAL LOADED CATALYST AND PREPARATION METHOD THEREOF
#2026Reactor system, an absorbent and a process for reacting a feed
#2027Method for making a highly selective ethylene oxide catalyst
#2028Catalysts, activating agents, support media, and related methodologies useful for making catalyst systems especially when the catalyst is deposited onto the support media using physical vapor deposition
#2029Process for preparing catalyst supports having reduced levels of contaminant
#2030Process for regenerating a catalyst comprising ruthenium oxide for the oxidation of hydrogen chloride
#2031CATALYST COMPRISING RUTHENIUM AND NICKEL FOR THE OXIDATION OF HYDROGEN CHLORIDE
#2032Wire catalyst for hydrogenation/dehydrogenation reaction and manufacturing method therefor
#2033Process for hydrogenating highly unsaturated hydrocarbons and catalyst therefor
#2034Catalyst for production of ethylene oxide and method for production of ethylene oxide
#2035Diesel oxidation catalysts
#2036GASOLINE ENGINE WITH AN EXHAUST SYSTEM FOR COMBUSTING PARTICULATE MATTER
#2037Water-forming hydrogenation reactions utilizing enhanced catalyst supports and methods of use
#2038Catalyst and process
#2039Oxidation catalyst for commercial vehicles comprising a diesel motor
#2040CARBON FIBER AGGREGATES AND PROCESS FOR PRODUCTION OF SAME
#2041Smoking article and method of manufacturing same, and method of manufacturing carbon monoxide reducing agent
#2042Process for conversion of alkanes to aromatics
#2043Process for the preparation of multimetallic catalysts that can be used in reactions for transformation of hydrocarbons
#2044Method for the production of nanocrystalline nickel oxides
#2045Silver catalyst for formaldehyde preparation
#2046Shaped heterogeneous catalysts
#2047IZM-2 zeolite-based catalyst and process for hydroconversion/hydrocracking of hydrocarbonated feedstocks
#2048Titania-alumina supported palladium catalyst
#2049Process for producing carbonyl difluoride
#2050Catalyst for producing carboxylic acid esters, process for producing same and process for producing carboxylic acid esters
#2051Method for the continuous production of an amine using an aluminum—copper catalyst
#2052Heterogeneous copper nanocatalyst and manufacturing methods thereof
#2053Process for preparing a Ni/Sn supported catalyst for the selective hydrogenation of polyunsaturated hydrocarbons
#2054METHOD FOR THE PRODUCTION OF NANOCRYSTALLINE NICKEL OXIDES
#2055Process for preparing catalyst powder
#2056Exhaust gas purification catalyst and method for purifying exhaust gas by using same
#2057Catalysts for producing a crude product
#2058Advanced catalysts for automotive applications
#2059Porous body precursors, shaped porous bodies, processes for making them, and end-use products based upon the same
#2060Exhaust gas purifying system and exhaust gas purifying method using the same
#2061CATALYST AND METHOD OF MANUFACTURE
#2062Exhaust gas purifying catalyst and method for producing the same
#2063Composition useful in the hydroprocessing of a hydrocarbon feedstock
#2064Catalytic support for use in carbon dioxide hydrogenation reactions
#2065USE OF SULPHUR-CONTAINING SUPPORTS FOR CATALYTIC REFORMING
#2066Mesoporous oxide-catalyst complex and method of preparing the mesoporous oxide-catalyst complex
#2067ALUMINA CARRIERS AND SILVER-BASED CATALYSTS FOR THE PRODUCTION OF ALKYLENE OXIDES
#2068Process and catalyst system for improving dewaxing catalyst stability and lubricant oil yield
#2069PROCESS FOR FORMING A CATALYST CARRIER
#2070EXCESS ENTHALPY UPON PRESSURIZATION OF NANOSIZED METALS WITH DEUTERIUM
#2071PROCESS FOR CONVERTING ETHANE INTO LIQUID ALKANE MIXTURES
#2072Selective hydrogenation of dienes in the manufacture of MLAB
#2073Selective Hydrogenation of Dienes in the Manufacture of MLAB
#2074Catalysts for fluoroolefins hydrogenation
#2075HYDROGENATION CATALYST AND PROCESS FOR PREPARING ALCOHOLS BY HYDROGENATION OF CARBONYL COMPOUNDS
#2076Systems and methods for refining alkyl ester compositions
#2077Porous body precursors, shaped porous bodies, processes for making them, and end-use products based upon the same
#2078POROUS BODY PRECURSORS, SHAPED POROUS BODIES, PROCESSES FOR MAKING THEM, AND END-USE PRODUCTS BASED UPON THE SAME
#2079Process to Protect Hydrogenation and Isomerization Catalysts Using a Guard Bed
#2080POROUS ALUMINUM MATERIAL HAVING IMPROVED BENDING STRENGTH AND PRODUCTION METHOD THEREFOR
#2081Ceramic nanofibers containing nanosize metal catalyst particles and medium thereof
#2082CATALYST AND METHOD OF MANUFACTURE
#2083Catalyst and method of manufacture
#2084Method for producing ethylene glycol from polyhydroxy compound
#2085Apparatus of catalyst for purifying exhaust gas and method for purifying exhaust gas
#2086Nanocomposite support materials
#2087CATALYST AND PROCESS FOR PREPARING SATURATED ETHERS BY HYDROGENATING UNSATURATED ETHERS
#2088EPOXIDATION CATALYST, A PROCESS FOR PREPARING THE CATALYST, AND A PROCESS FOR THE PRODUCTION OF AN OLEFIN OXIDE, A 1,2-DIOL, A 1,2-DIOL ETHER, A 1,2-CARBONATE, OR AN ALKANOLAMINE
#2089Preparation of Diesel Oxidation Catalyst Via Deposition of Colloidal Nanoparticles
#2090HYDROGENATION CATALYST
#2091Dehydrogenation of cyclic thioethers
#2092Process for producing cyclohexylbenzene
#2093METHOD FOR PREPARING FLUORINATED COMPOUNDS
#2094Mechanically stable catalyst based on alpha-alumina
#2095Catalyst for purification of exhaust gas, and apparatus and method for purification of exhaust gas using the catalyst
#2096Oxidation catalyst and its preparation
#2097Polyol hydrogenolysis by in-situ generated hydrogen
#2098Structurally enhanced cracking catalysts
#2099Process for Using Layered Sphere Catalysts with High Accessibility Indexes
#2100Selective hydrogenation catalyst and the preparation thereof