DE2420304C2 - Festes Adsorptionsmittel und Verfahren zu seiner Herstellung - Google Patents
Festes Adsorptionsmittel und Verfahren zu seiner HerstellungInfo
- Publication number
- DE2420304C2 DE2420304C2 DE2420304A DE2420304A DE2420304C2 DE 2420304 C2 DE2420304 C2 DE 2420304C2 DE 2420304 A DE2420304 A DE 2420304A DE 2420304 A DE2420304 A DE 2420304A DE 2420304 C2 DE2420304 C2 DE 2420304C2
- Authority
- DE
- Germany
- Prior art keywords
- ion exchange
- cations
- weight
- exchange treatment
- barium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003463 adsorbent Substances 0.000 title claims description 61
- 238000000034 method Methods 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000007787 solid Substances 0.000 title claims description 8
- 230000008569 process Effects 0.000 title description 8
- 238000005342 ion exchange Methods 0.000 claims description 53
- 238000011282 treatment Methods 0.000 claims description 53
- -1 barium cations Chemical class 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000011734 sodium Substances 0.000 claims description 29
- 229910052788 barium Inorganic materials 0.000 claims description 24
- 239000010457 zeolite Substances 0.000 claims description 23
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 20
- 229910052708 sodium Inorganic materials 0.000 claims description 19
- 229910021536 Zeolite Inorganic materials 0.000 claims description 18
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 17
- 229910052700 potassium Inorganic materials 0.000 claims description 16
- 239000011591 potassium Substances 0.000 claims description 16
- 239000011230 binding agent Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims 1
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 82
- 239000000126 substance Substances 0.000 description 40
- 150000001768 cations Chemical class 0.000 description 21
- 238000003795 desorption Methods 0.000 description 21
- 239000000243 solution Substances 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 125000003118 aryl group Chemical group 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 239000002245 particle Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 12
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 description 12
- 238000001179 sorption measurement Methods 0.000 description 12
- 238000012360 testing method Methods 0.000 description 12
- 238000005406 washing Methods 0.000 description 11
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 10
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical group CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 9
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 229930195733 hydrocarbon Natural products 0.000 description 9
- 150000002430 hydrocarbons Chemical class 0.000 description 9
- 238000000926 separation method Methods 0.000 description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000003550 marker Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 7
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 229940078552 o-xylene Drugs 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 4
- BKIMMITUMNQMOS-UHFFFAOYSA-N nonane Chemical compound CCCCCCCCC BKIMMITUMNQMOS-UHFFFAOYSA-N 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 230000000274 adsorptive effect Effects 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000001103 potassium chloride Substances 0.000 description 3
- 235000011164 potassium chloride Nutrition 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000002336 sorption--desorption measurement Methods 0.000 description 3
- KVNYFPKFSJIPBJ-UHFFFAOYSA-N 1,2-diethylbenzene Chemical compound CCC1=CC=CC=C1CC KVNYFPKFSJIPBJ-UHFFFAOYSA-N 0.000 description 2
- 108700028369 Alleles Proteins 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 2
- 229910001626 barium chloride Inorganic materials 0.000 description 2
- 235000010216 calcium carbonate Nutrition 0.000 description 2
- 241001233037 catfish Species 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000012013 faujasite Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000872931 Myoporum sandwicense Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 241001163743 Perlodes Species 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 206010041662 Splinter Diseases 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- CPGKMLVTFNUAHL-UHFFFAOYSA-N [Ca].[Ca] Chemical compound [Ca].[Ca] CPGKMLVTFNUAHL-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000000538 analytical sample Substances 0.000 description 1
- 235000019568 aromas Nutrition 0.000 description 1
- 239000011805 ball Substances 0.000 description 1
- 229910001422 barium ion Inorganic materials 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- SYWDWCWQXBUCOP-UHFFFAOYSA-N benzene;ethene Chemical compound C=C.C1=CC=CC=C1 SYWDWCWQXBUCOP-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011872 intimate mixture Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical group 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/186—Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
- C07C7/13—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers by molecular-sieve technique
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US356666A US3878127A (en) | 1973-05-02 | 1973-05-02 | Method of manufacturing a zeolitic absorbent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2420304A1 DE2420304A1 (de) | 1974-11-14 |
| DE2420304C2 true DE2420304C2 (de) | 1985-05-02 |
Family
ID=23402404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2420304A Expired DE2420304C2 (de) | 1973-05-02 | 1974-04-26 | Festes Adsorptionsmittel und Verfahren zu seiner Herstellung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3878127A (enExample) |
| JP (1) | JPS5442358B2 (enExample) |
| DE (1) | DE2420304C2 (enExample) |
| FR (1) | FR2227889B1 (enExample) |
| GB (1) | GB1466577A (enExample) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960774A (en) * | 1973-05-02 | 1976-06-01 | Universal Oil Products Company | Zeolitic adsorbent for xylene separation |
| US3969276A (en) * | 1973-05-02 | 1976-07-13 | Uop Inc. | Method of manufacturing a zeolitic adsorbent |
| US3943184A (en) * | 1974-02-15 | 1976-03-09 | Universal Oil Products Company | Aromatic hydrocarbon isomer separation process |
| JPS51106688A (enExample) * | 1975-03-17 | 1976-09-21 | Toray Industries | |
| ZA76937B (en) * | 1975-03-27 | 1977-04-27 | Uop Inc | Aromatic hydrocarbon isomer separation process |
| JPS6140817A (ja) * | 1984-07-31 | 1986-02-27 | Toyo Soda Mfg Co Ltd | ゼオライトのイオン交換方法 |
| US4751346A (en) * | 1984-10-29 | 1988-06-14 | Exxon Research & Engineering Co. | Process for separating ethylbenzene from xylenes by selective adsorption on a gallium beta zeolite (ATD-35) |
| US4593149A (en) * | 1984-10-29 | 1986-06-03 | Exxon Research And Engineering Co. | Process for separating ethylbenzene from xylenes by selective adsorption on a cesium substituted X zeolite |
| US4593150A (en) * | 1984-11-23 | 1986-06-03 | Exxon Research And Engineering Co. | Process for enhancing the separation of paraxylene from a feedstream containing other xylenes and ethylbenzene using a zeolite adsorbent |
| US4886929A (en) * | 1987-06-15 | 1989-12-12 | Uop Inc. | Separation of para-xylene |
| US4899017A (en) * | 1987-07-27 | 1990-02-06 | Mobil Oil Corporation | Process for the selective separation of para-xylene from C8 aromatic mixtures |
| US4851200A (en) * | 1988-01-04 | 1989-07-25 | Mobil Oil Corporation | Method for removing organic residue from as-synthesized zeolites |
| US5849981A (en) * | 1994-10-11 | 1998-12-15 | Uop Llc | Adsorptive separation of para-xylene using isopropylbenzene desorbent |
| FR2767524B1 (fr) * | 1997-08-21 | 1999-09-24 | Ceca Sa | Procede ameliore d'obtention de paraxylene a partir de coupes de c8 aromatiques |
| FR2789914B1 (fr) * | 1999-02-22 | 2001-04-06 | Ceca Sa | Adsorbants zeolitiques agglomeres a faible taux de liant inerte, leur procede d'obtention et leurs utilisations |
| FR2903978B1 (fr) | 2006-07-19 | 2010-09-24 | Ceca Sa | Adsorbants zeolitiques agglomeres, leur procede de preparation et leurs utilisations |
| US7820869B2 (en) * | 2008-06-30 | 2010-10-26 | Uop Llc | Binderless adsorbents and their use in the adsorptive separation of para-xylene |
| US8283274B2 (en) | 2009-07-20 | 2012-10-09 | Uop Llc | Binderless zeolitic adsorbents, methods for producing binderless zeolitic adsorbents, and processes for adsorptive separation of para-xylene from mixed xylenes using the binderless zeolitic adsorbents |
| FR2999098B1 (fr) | 2012-12-12 | 2022-01-14 | Ceca Sa | Adsorbants zeolithiques, leur procede de preparation et leurs utilisations |
| FR3010402B1 (fr) | 2013-09-09 | 2015-08-28 | Ceca Sa | Adsorbants zeolithiques de haute surface externe, leur procede de preparation et leurs utilisations |
| FR3024667B1 (fr) | 2014-08-05 | 2022-01-14 | Ceca Sa | Adsorbants zeolithiques a faible taux de liant et a haute surface externe, leur procede de preparation et leurs utilisations |
| FR3024666B1 (fr) * | 2014-08-05 | 2022-01-14 | Ifp Energies Now | Adsorbants zeolithiques comprenant une zeolithe a porosite hierarchisee |
| FR3028430B1 (fr) | 2014-11-13 | 2018-08-17 | IFP Energies Nouvelles | Adsorbants zeolithiques a base de zeolithe lsx de surface externe controlee, leur procede de preparation et leurs utilisations |
| US10392324B2 (en) | 2016-05-20 | 2019-08-27 | Exxonmobil Chemical Patents Inc. | Xylene separation process |
| FR3070685B1 (fr) | 2017-09-04 | 2021-08-13 | Ifp Energies Now | Procede hybride de production de paraxylene de haute purete avec solvant toluene |
| FR3105021B1 (fr) | 2019-12-20 | 2022-08-12 | Ifp Energies Now | Adsorbant zéolithique pour la séparation d’isomères d’hydrocarbures |
| US11673848B2 (en) | 2020-02-27 | 2023-06-13 | Exxonmobil Chemical Patents Inc. | Xylene separation processes using a membrane separator |
| FR3143383A1 (fr) | 2022-12-20 | 2024-06-21 | IFP Energies Nouvelles | Adsorbant zéolithique pour la séparation des xylènes à haute productivité |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1040005B (de) * | 1955-07-01 | 1958-10-02 | Union Carbide Corp | Verfahren zur Herstellung gebundener Molekularsiebe |
| US3382039A (en) * | 1965-11-17 | 1968-05-07 | Ritter Pfaudler Corp | Preparation and use of silver zeolites of improved exchange capacity |
| US3558730A (en) * | 1968-06-24 | 1971-01-26 | Universal Oil Prod Co | Aromatic hydrocarbon separation by adsorption |
| US3549558A (en) * | 1968-08-29 | 1970-12-22 | Shell Oil Co | Crystalline alumino-silicate catalyst |
| US3663638A (en) * | 1970-08-31 | 1972-05-16 | Universal Oil Prod Co | Aromatic hydrocarbon separation by adsorption |
-
1973
- 1973-05-02 US US356666A patent/US3878127A/en not_active Expired - Lifetime
-
1974
- 1974-04-26 DE DE2420304A patent/DE2420304C2/de not_active Expired
- 1974-05-01 GB GB1901674A patent/GB1466577A/en not_active Expired
- 1974-05-01 JP JP4834174A patent/JPS5442358B2/ja not_active Expired
- 1974-05-02 FR FR7415252A patent/FR2227889B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5027790A (enExample) | 1975-03-22 |
| FR2227889A1 (enExample) | 1974-11-29 |
| GB1466577A (en) | 1977-03-09 |
| FR2227889B1 (enExample) | 1978-06-02 |
| US3878127A (en) | 1975-04-15 |
| DE2420304A1 (de) | 1974-11-14 |
| JPS5442358B2 (enExample) | 1979-12-13 |
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