ClassID:

30365

B01D2253/304 - page 2 - CPC Classification

Classification description:

Adsorbents used in seperation treatment of gases and vapours; Physical properties of adsorbents; Dimensions Linear dimensions, e.g. particle shape, diameter

Recent Application in this class:
#301
20140360409
2014-12-11

Ash compositions recovered from coal combustion gases having reduced emissions of HCI and/or mercury

#302
20140298992
2014-10-09

Adsorbent having utility for COcapture from gas mixtures

#303
20140255279
2014-09-11

Activated carbon sorbent including nitrogen and methods of using the same

#304
20140227368
2014-08-14

Methods for scavenging nitric oxide using cerium oxide nanoparticles

#305
20140194658
2014-07-10

Class of tunable gas storage and sensor materials

#306
20140175334
2014-06-26

Polymetallic capture mass for capturing heavy metals

#307
20140166927
2014-06-19

Moisture absorbent for organic electroluminescence element and production method for same

#308
20140161701
2014-06-12

Desulphurisation material comprising copper supported on zinc oxide

#309
20140135211
2014-05-15

Process for preparing ball-type desulfurizer with high sulfur capacity and product thereof

#310
20140127106
2014-05-08

Regenerable oxide-based adsorbent

#311
20140086817
2014-03-27

Adsorbent granulate and method for the manufacture thereof

#312
20140033925
2014-02-06

Mixture of an adsorbent and a phase change material with an adapted density

#313
20140017131
2014-01-16

Carbon nano tube intelligent filter for adsorption of pollutants and hydrocarbons in environment and recovery to excellent industrial carbon

#314
20130336868
2013-12-19

Dry processes, apparatus, compositions and systems for reducing sulfur oxides and HCI

#315
20130334068
2013-12-19

Rectangular parallelepiped fluid storage and dispensing vessel

#316
20130295362
2013-11-07

Porous polymer networks and ion-exchange media and metal-polymer composites made therefrom

#317
20130280156
2013-10-24

Carbon nanocomposite sorbent and methods of using the same for separation of one or more materials from a gas stream

#318
20130247757
2013-09-26

Adsorbent for carbon dioxide, method of preparing the same, and capture module for carbon dioxide including the same

#319
20130220121
2013-08-29

Adsorbent of volatile organic compounds and adsorption method using thereof

#320
20130202504
2013-08-08

Enhanced adsorbents and methods for mercury removal

#321
20130175468
2013-07-11

Decomposer containing iron particles for organohalogen compound and method for producing the same

#322
20130165319
2013-06-27

Brominated sorbents for removing mercury from emissions produced during fuel combustion

#323
20130136660
2013-05-30

Combustible gas enrichment apparatus

#324
20130109562
2013-05-02

Multi-functional composition of matter for rapid removal of mercury from a flue gas

#325
20130102460
2013-04-25

Polyaniline-graphite nanoplatelet materials

#326
20130089484
2013-04-11

Silica containing basic sorbent for acid gas removal

#327
20130068692
2013-03-21

Electrospun cactus mucilage nanofibers

#328
20130036908
2013-02-14

Method and apparatus for control and elimination of undesirable substances

#329
20130019752
2013-01-24

Gas separation device

#330
20130019750
2013-01-24

Six bed pressure swing adsorption process operating in normal and turndown modes

#331
20130009093
2013-01-10

Particulate matter and methods of obtaining same from a Kraft waste reclamation

#332
20130005888
2013-01-03

ADSORPTIVE ULTRA-FINE METAL PARTICLES

#333
20120329643
2012-12-27

Noble metal fine particle supported catalyst and method for producing the catalyst, and purifying catalyst

#334
20120325850
2012-12-27

Gas storage and dispensing system with monolithic carbon adsorbent

#335
20120312163
2012-12-13

Temperature swing adsorption process for the separation of target species from a gas mixture

#336
20120308456
2012-12-06

Selective sulfur removal process

#337
20120305467
2012-12-06

AGGLOMERATES OF ADSORBER PARTICLES AND METHODS FOR PRODUCING SUCH ADSORBER PARTICLES

#338
20120295043
2012-11-22

SPACER PROFILE FOR AN INSULATED GLAZING UNIT

#339
20120267577
2012-10-25

System and method for processing an input fuel gas and steam to produce carbon dioxide and an output fuel gas

#340
20120244355
2012-09-27

Sorbent formulation for removal of mercury from flue gas

#341
20120222555
2012-09-06

Gas purification process utilizing engineered small particle adsorbents

#342
20120222554
2012-09-06

Rapid temperature swing adsorption contactors for gas separation

#343
20120222553
2012-09-06

Pressure-temperature swing adsorption process

#344
20120222552
2012-09-06

Pressure-temperature swing adsorption process for the separation of heavy hydrocarbons from natural gas streams

#345
20120222551
2012-09-06

Swing adsorption processes utilizing controlled adsorption fronts

#346
20120208088
2012-08-16

High surface area nano-structured graphene composites and capacitive devices incorporating the same

#347
20120202680
2012-08-09

METHOD FOR THE PREPARATION OF A ZEOLITE-BASED MONOLITHIC STRUCTURE

#348
20120192864
2012-08-02

Ultra rapid cycle portable oxygen concentrator

#349
20120190900
2012-07-26

Molecular sieve adsorbent blends and uses thereof

#350
20120174776
2012-07-12

Six bed pressure swing adsorption process operating in normal and turndown modes

#351
20120144999
2012-06-14

Titanosilicate molecular sieve supported metallic nanodots and methods of use to adsorb noble gases

#352
20120134903
2012-05-31

Solid Inorganic Composition, Method for Preparing Same, and Use Thereof for Reducing Dioxins and Heavy Metals in Flue Gas

#353
20120079938
2012-04-05

Radial bed vessels having uniform flow distribution

#354
20120063981
2012-03-15

Method and apparatus for removing contaminant from fluid

#355
20120063974
2012-03-15

Method of beneficiating and drying trona ore useful for flue gas desulfurization

#356
20120048111
2012-03-01

Hybrid adsorbent method of capturing carbon dioxide in gas and apparatus for capturing carbon dioxide in gas

#357
20120020861
2012-01-26

USE OF A TiO2- BASED COMPOSITION FOR CAPTURING HALOGENATED COMPOUNDS CONTAINED IN A GASEOUS MIXTURE

#358
20120020856
2012-01-26

Enhanced adsorbents and methods for mercury removal

#359
20120018351
2012-01-26

Processes for removing sulfur from a hydrocarbon stream utilizing silver-based sorbents

#360
20120017761
2012-01-26

Room temperature chemical trap for the purification of gaseous methane

#361
20110303558
2011-12-15

Gas storage and dispensing system with monolithic carbon adsorbent

#362
20110293498
2011-12-01

Method for treating a gas to reduce the carbon dioxide content thereof

#363
20110277846
2011-11-17

Rectangular parallelepiped fluid storage and dispensing vessel

#364
20110271838
2011-11-10

Microtrap assembly for greenhouse gas and air pollution monitoring

#365
20110259828
2011-10-27

Zeolite adsorbent having an organic binder

#366
20110251056
2011-10-13

Method of fabricating layered nano-carbonate used for medium-high temperature COsorbent

#367
20110251048
2011-10-13

Chabazite-type zeolite and process for producing the same

#368
20110247495
2011-10-13

Gas Adsorber For Use In Gas Storager

#369
20110236298
2011-09-29

Adsorbent for water adsorption and desorption

#370
20110226700
2011-09-22

Reduced copper sulphide sorbent for removing heavy metals

#371
20110223088
2011-09-15

Method and apparatus for on-site production of lime and sorbents for use in removal of gaseous pollutants

#372
20110203583
2011-08-25

Methods for facilitating use of dimethyl sulfoxide (DMSO) by removal of same, related compounds, or associated odors

#373
20110174155
2011-07-21

Method for removing sulfur from a gas stream

#374
20110168018
2011-07-14

HYBRID NANO SORBENT

#375
20110129603
2011-06-02

Air-permeable filtration media, methods of manufacture and methods of use

#376
20110124112
2011-05-26

Nitrogen dioxide sensing apparatus and method using carbon nanomaterials as an ozone removal material

#377
20110107914
2011-05-12

ARTICLE FOR EXTRACTING A COMPONENT FROM A FLUID STREAM, METHODS AND SYSTEMS INCLUDING SAME

#378
20110104494
2011-05-05

ADSORBENT GRANULATE AND METHOD FOR THE MANUFACTURE THEREOF

#379
20110076210
2011-03-31

Sorbent formulation for removal of mercury from flue gas

#380
20110045218
2011-02-24

DYNAMIC INKS AND COATINGS

#381
20110024680
2011-02-03

Metal contaminant removal compositions and methods for making and using the same

#382
20110017493
2011-01-27

Carbon microbeads with hierarchical structure

#383
20110017068
2011-01-27

High frequency PSA process for gas separation

#384
20110011803
2011-01-20

Sorbent fiber compositions and methods of using the same

#385
20110011414
2011-01-20

Highly cohesive composite polymer materials, preparation thereof and, E.G., cigarette filters comprising same

#386
20100313756
2010-12-16

Use of iron ore agglomerates for acid gas removal

#387
20100313755
2010-12-16

Fiber sorbents

#388
20100300288
2010-12-02

Guard layers for rapid cycle pressure swing adsorption devices

#389
20100300285
2010-12-02

Miniature oxygen concentrators and methods

#390
20100284903
2010-11-11

New Class of Tunable Gas Storage and Sensor Materials

#391
20100248941
2010-09-30

USE OF IRON ORE AGGLOMERATES FOR ACID GAS REMOVAL

#392
20100247424
2010-09-30

HYDROGEN STORAGE IN NANOPOROUS INORGANIC NETWORKS

#393
20100239479
2010-09-23

Process For Removing Toxic Metals From A Fluid Stream

#394
20100202947
2010-08-12

USE OF A TiO2- BASED COMPOSITION FOR CAPTURING HALOGENATED COMPOUNDS CONTAINED IN A GASEOUS MIXTURE

#395
20100196259
2010-08-05

CO2-Sorptive Pellets and Uses Thereof

#396
20100196213
2010-08-05

Spherical agglomerates based on zeolite(s), process for the production thereof and use thereof in adsorption processes or in catalysis

#397
20100192774
2010-08-05

Activated carbon and canister and intake air filter utilizing the same

#398
20100192769
2010-08-05

ACTIVATED CARBON HONEYCOMB CATALYST BEDS AND METHODS FOR THE USE THEREOF

#399
20100126909
2010-05-27

Method for removal of mercury from hydrocarbon feedstocks

#400
20100119422
2010-05-13

Chemical and particulate filters containing chemically modified carbon nanotube structures

#401
20100116135
2010-05-13

Method and apparatus for pollution control of confined spaces

#402
20100116134
2010-05-13

High rate and high crush-strength adsorbents

#403
20100107873
2010-05-06

METHOD FOR REMOVING STYRENE

#404
20100101542
2010-04-29

Evaporative emissions filter

#405
20100101413
2010-04-29

METHOD AND APPARATUS FOR CONTROL AND ELIMINATION OF UNDESIRABLE SUBSTANCES

#406
20100089241
2010-04-15

Gas separation device

#407
20100080754
2010-04-01

Process for producing hydrogen with complete capture of COand recycling unconverted methane

#408
20100069696
2010-03-18

PROCESS FOR SEPARATING PROPYLENE MIXED WITH PROPANE BY ADSORPTION IN A SIMULATED MOVING BED

#409
20100068474
2010-03-18

COATED MOLECULAR SIEVE

#410
20100050868
2010-03-04

MERCURY ABSORPTION USING CHABAZITE SUPPORTED METALLIC NANODOTS

#411
20100050866
2010-03-04

NANOWIRE FILTER, METHOD FOR MANUFACTURING THE SAME, METHOD FOR REMOVING MATERIAL ABSORBED THEREON, AND FILTERING APPARATUS HAVING THE SAME

#412
20100043642
2010-02-25

System and method of exhaust-gas treatment

#413
20100043635
2010-02-25

PSA method using a composite adsorption bed comprising an adsorbent and PCM agglomerates

#414
20100010130
2010-01-14

Adsorptive ultra-fine metal particles

#415
20090314158
2009-12-24

Room temperature chemical trap for the purification of gaseous methane

#416
20090308247
2009-12-17

Temperature swing adsorption system

#417
20090304921
2009-12-10

Particulate matter and methods of obtaining same from a Kraft waste reclamation

#418
20090293720
2009-12-03

Adsorbent and adsorbent bed for materials capture and separation processes

#419
20090229459
2009-09-17

Process and Apparatus for Generating and Delivering an Enriched Gas Fraction

#420
20090211445
2009-08-27

AMORPHOUS INFINITE COORDINATION POLYMER MICROPARTICLES AND USE FOR HYDROGEN STORAGE

#421
20090202655
2009-08-13

TITANOSILICATE MOLECULAR SIEVE SUPPORTED METALLIC NANODOTS AND METHODS OF USE TO ADSORB NOBLE GASES

#422
20090199546
2009-08-13

Device for reducing dibenzodioxin emissions, dibenzofuran emissions and particle emissions

#423
20090188392
2009-07-30

Gas storage and dispensing system with monolithic carbon adsorbent

#424
20090173225
2009-07-09

Rectangular parallelepiped fluid storage and dispensing vessel

#425
20090151558
2009-06-18

Gas purifier apparatus and method for gas purification

#426
20090145300
2009-06-11

Process and apparatus for generating and delivering an enriched gas fraction

#427
20090130411
2009-05-21

Adsorbent for Water Adsorption and Desorption

#428
20090130012
2009-05-21

Method for removing halogen series gas and agent for removing halogen series gas

#429
20090127184
2009-05-21

Flow-Through Device for The Treatment of a Fluid and Flow-Through Element Used Thereby

#430
20090084362
2009-04-02

CATALYST MATERIAL FOR EVAPORATIVE EMISSION CONTROL SYSTEM

#431
20090078635
2009-03-26

Device for treating a fluid

#432
20090071333
2009-03-19

Performance Stability in Shallow Beds in Pressure Swing Adsorption Systems

#433
20090031899
2009-02-05

Volatile Substance Filter

#434
20090019815
2009-01-22

Spacer Profile for Insulated Glazing Unit

#435
20090001021
2009-01-01

Air filtration media comprising non-metal-doped precipitated silica and/or silicon-based gel materials

#436
20080308262
2008-12-18

Humidity and/or Heat-Exchange Device

#437
20080302731
2008-12-11

Sulfur-impregnated and coupling agent-reacted organoclay mercury and/or arsenic ion removal media

#438
20080302730
2008-12-11

Sulfur-impregnated organoclay mercury and/or arsenic ion removal media

#439
20080302725
2008-12-11

Modulated Bundle Element

#440
20080286466
2008-11-20

Chemical and particulate filters containing chemically modified carbon nanotube structures

#441
20080284992
2008-11-20

Exposures system including chemical and particulate filters containing chemically modified carbon nanotube structures

#442
20080283446
2008-11-20

SILVER-BASED SORBENTS

#443
20080282893
2008-11-20

Chemical and particulate filters containing chemically modified carbon nanotube structures

#444
20080274874
2008-11-06

Sorbent for the dry cleaning of waste gases charged with mercury and process for the production thereof

#445
20080271606
2008-11-06

Chemical and particulate filters containing chemically modified carbon nanotube structures

#446
20080271605
2008-11-06

Air-permeable filtration media and related systems

#447
20080271602
2008-11-06

Doped supported zinc oxide sorbents for regenerable desulfurization applications

#448
20080241029
2008-10-02

Methods and apparatus for removing mercury from combustion flue gas

#449
20080241028
2008-10-02

Methods and apparatus to facilitate reducing mercury emissions

#450
20080236388
2008-10-02

Cartridge for treating a gas

#451
20080184891
2008-08-07

Evaporative emissions filter

#452
20080184886
2008-08-07

THERMAL PRECONCENTRATOR FOR COLLECTION OF CHEMICAL SPECIES

#453
20080156190
2008-07-03

Method of purifying a gas stream contaminated by COand one or more hydrocarbons and/or nitrogen oxides by adsorption on an aggregated zeolitic adsorbent

#454
20080134889
2008-06-12

High frequency PSA process for gas separation

#455
20080134882
2008-06-12

System and Method of Exhaust-Gas Treatment

#456
20080119356
2008-05-22

Highly attrition resistant and dry regenerable sorbents for carbon dioxide capture

#457
20080102136
2008-05-01

Reactive nanoparticles as destructive adsorbents for biological and chemical contamination

#458
20080083332
2008-04-10

Performance stability in shallow beds in pressure swing adsorption systems

#459
20080047430
2008-02-28

Filter element, method of manufacture and use

#460
20080026939
2008-01-31

Process for preparing zinc oxide-based sorbents

#461
20080026041
2008-01-31

NON-WOVEN MEDIA INCORPORATING ULTRAFINE OR NANOSIZE POWDERS

#462
20080022852
2008-01-31

Zinc-oxide-based sorbents and processes for preparing and using same

#463
20080017036
2008-01-24

Absorbing agent, dust collection chamber and method for adsorbing odours

#464
20080011662
2008-01-17

Compositions and methods for fluid purification

#465
20080011163
2008-01-17

Sorbent porous polymeric composite materials

#466
20070261557
2007-11-15

Activated carbon honeycomb catalyst beds and methods for the use thereof

#467
20070261550
2007-11-15

Method of separating nitrogen gas and molecular sieve carbon

#468
20070246419
2007-10-25

Compositions and methods for fluid purification

#469
20070227361
2007-10-04

Canister

#470
20070199446
2007-08-30

Production of carbon monoxide-free hydrogen and helium from a high-purity source

#471
20070072769
2007-03-29

CARBON DIOXIDE ABSORBENT AND CARBON DIOXIDE SEPARATION APPARATUS

#472
20070056307
2007-03-15

Dehumidification system

#473
20070051240
2007-03-08

Method for making nano-scale filter

#474
20070037702
2007-02-15

Co-formed base-treated aluminas for water and COremoval

#475
20070012185
2007-01-18

Air treatment filter and related method

#476
20070001146
2007-01-04

Plate-shaped pressed bodies

#477
20060292426
2006-12-28

FILTER ASSEMBLIES AND SYSTEMS FOR INTAKE AIR FOR FUEL CELLS

#478
20060288869
2006-12-28

Process and apparatus for generating and delivering an enriched gas fraction

#479
20060243642
2006-11-02

DESULFURIZATION SYSTEM WITH NOVEL SORBENT TRANSFER MECHANISM

#480
20060243134
2006-11-02

Air filter unit with several filter elements

#481
20060236863
2006-10-26

Design and operation methods for pressure swing adsorption systems

#482
20060236861
2006-10-26

Gas purification process

#483
20060230930
2006-10-19

Temperature swing adsorption system

#484
20060225817
2006-10-12

Gas sorbents on the basis of intermetallic compounds and a method for producing the same

#485
20060225574
2006-10-12

Filter element and filter system

#486
20060180024
2006-08-17

Method of reusing exhaust gas in polymer production plant

#487
20060177659
2006-08-10

Powder containing carbon nanotube or carbon nanofiber and process for preparing the same

#488
20060169142
2006-08-03

Engineered adsorbent structures for kinetic separation

#489
20060162556
2006-07-27

Method and apparatus for gas purification

#490
20060151382
2006-07-13

Contact devices with nanostructured materials

#491
20060148642
2006-07-06

Highly attrition resistant and dry regenerable sorbents for carbon dioxide capture

#492
20060144228
2006-07-06

Adsorption filter for fuel vapors

#493
20060123991
2006-06-15

Adsorption filter

#494
20060117950
2006-06-08

Method for supplying passengers of an aircraft with an oxygen-rich gas mixture

#495
20060112823
2006-06-01

Boundary layer propulsion and turbine apparatus

#496
20060107831
2006-05-25

Xenon recovery system

#497
20060101999
2006-05-18

Active filter element for end face incident flow

#498
20060101997
2006-05-18

Composite material and use thereof for controlling thermal effects in a physicochemical process

#499
20060054023
2006-03-16

Air-permeable filtration media, methods of manufacture and methods of use

#500
20060054018
2006-03-16

Rectangular parallelepiped fluid storage and dispending vessel

#501
20060042468
2006-03-02

Adsorptive assembly and method of making the same

#502
20060042462
2006-03-02

Method of recycling fluorine using an adsorption purification process

#503
20060013979
2006-01-19

Spacer profile for an insulated glazing unit

#504
20060011064
2006-01-19

Gas storage and dispensing system with monolithic carbon adsorbent

#505
20060000354
2006-01-05

Adsorption process and system using multilayer adsorbent beds containing regenerator section

#506
20050284297
2005-12-29

Gas purification system with an integrated hydrogen sorption and filter assembly

#507
20050268785
2005-12-08

Disposable cartridge air/gas dryer

#508
20050252378
2005-11-17

Radial bed flow distributor for radial pressure adsorber vessel

#509
20050247201
2005-11-10

Disposable cartridge for air/gas dryer

#510
20050238549
2005-10-27

Electronic controls for pollutant removal

#511
20050235615
2005-10-27

Filter assemblies and systems for intake air for fuel cells

#512
20050211642
2005-09-29

Filtering medium and use of the said filtering medium for pollution removal from lagoons

#513
20050199126
2005-09-15

Flexible, inline, point-of-use air/gas filter/dryer

#514
20050188846
2005-09-01

Gas storage and dispensing system with monolithic carbon adsorbent

#515
20050183573
2005-08-25

Method for separating gas mixtures

#516
20050164890
2005-07-28

Supported perovskite-type oxides and methods for preparation thereof

#517
20050161043
2005-07-28

Simplified dual mode medical oxygen concentrator

#518
20050160905
2005-07-28

Dual mode medical oxygen concentrator

#519
20050145224
2005-07-07

Evaporative emissions filter

#520
20050139078
2005-06-30

Filter constructions containing breather and recirculation filter elements

#521
20050139077
2005-06-30

Dual diffusion channel filter

#522
20050126547
2005-06-16

Evaporated fuel adsorbing apparatus for an engine intake passage

#523
20050106089
2005-05-19

Sulfur oxide sorption with layered chlorite-type contact solids

#524
20050100492
2005-05-12

Vehicle having atmosphere pollutant treating surface

#525
20050095468
2005-05-05

Fluid cleaner and fuel-cell generator

#526
20050092675
2005-05-05

Filter element, method for manufacture thereof, and filter using said element

#527
20050076623
2005-04-14

Filter assemblies and systems for intake air for fuel cells

#528
20050072305
2005-04-07

Body for isolating a constituent contained in a gas mixture

#529
20050072299
2005-04-07

Low operating pressure gas scrubber

#530
20050061148
2005-03-24

Process and device in connection with the production of oxygen or oxygen enriched air

#531
20050056567
2005-03-17

Method for removing sulfur compounds from fluids using compressed metal oxide composition particles

#532
20050056148
2005-03-17

Method and apparatus for the abatement of toxic gas components from a semiconductor manufacturing process effluent stream

#533
20050045041
2005-03-03

Removable cartridge for swing-type adsorption system

#534
20050005770
2005-01-13

Adsorptive duct for contaminant removal, and methods

#535
20050000904
2005-01-06

Process for the recovery of fluorosurfactants by active charcoal

#536
18936404
2025-07-15

Method and system for sustainable brine treatment and heavy metal purification using recycled carbon fiber

#537
18765778
2024-12-31

Mixed matrix membrane with a covalent organic framework for selective COseparation

#538
18648003
2025-04-08

Method of removing hydrogen sulfide from a subterranean geological formation with an imidazolate-based nanomaterial in an oil-based drilling fluid

#539
18647271
2024-10-29

Cellulous nanofiber aerogels-based bio unit for sequestering flow back CO2 after hydraulic fracturing operations

#540
18595901
2024-12-17

Method and system for sustainable brine treatment and heavy metal purification using recycled carbon fiber

#541
18508622
2024-05-14

Jute filters to reduce ammonia inhibition effects of chicken manure for biogas production

#542
18212609
2024-07-16

Jute filters to reduce ammonia inhibition effects of chicken manure for biogas production

#543
18119476
2023-09-19

Methods of making and using a composite material, for dehydration of gases

#544
17746369
2022-12-06

Techniques to synthesize greenhouse gases

#545
17071525
2024-04-30

Natural gas drying method and apparatus

#546
16375647
2024-12-17

High reactivity lime hydrate and methods of manufacturing and uses thereof

#547
16216646
2020-06-02

Systems and method for removal of acid gas in a circulating dry scrubber

#548
15344173
2019-06-04

High reactivity lime hydrate and methods of manufacturing and uses thereof

#549
15245565
2019-04-30

Removal of carbon dioxide from gas mixtures using ion-exchanged silicoaluminophosphates

#550
15056699
2017-07-11

Method of capturing or trapping zinc using zinc getter materials

#551
12334768
2018-08-21

Removal of carbon dioxide from gas mixtures using ion-exchanged silicoaluminophosphates