DE2734912A1 - Verfahren zur herstellung eines silberhaltigen katalysators und seine verwendung - Google Patents
Verfahren zur herstellung eines silberhaltigen katalysators und seine verwendungInfo
- Publication number
- DE2734912A1 DE2734912A1 DE19772734912 DE2734912A DE2734912A1 DE 2734912 A1 DE2734912 A1 DE 2734912A1 DE 19772734912 DE19772734912 DE 19772734912 DE 2734912 A DE2734912 A DE 2734912A DE 2734912 A1 DE2734912 A1 DE 2734912A1
- Authority
- DE
- Germany
- Prior art keywords
- catalyst
- cesium
- silver
- solution
- primary
- 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.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title claims description 62
- 229910052709 silver Inorganic materials 0.000 title claims description 28
- 239000004332 silver Substances 0.000 title claims description 28
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- -1 silver carboxylate Chemical class 0.000 claims description 24
- 229910052792 caesium Inorganic materials 0.000 claims description 23
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 12
- 239000005977 Ethylene Substances 0.000 claims description 12
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical class [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 claims description 12
- 238000005470 impregnation Methods 0.000 claims description 12
- HUCVOHYBFXVBRW-UHFFFAOYSA-M caesium hydroxide Inorganic materials [OH-].[Cs+] HUCVOHYBFXVBRW-UHFFFAOYSA-M 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 7
- 125000003277 amino group Chemical group 0.000 claims description 6
- MFGOFGRYDNHJTA-UHFFFAOYSA-N 2-amino-1-(2-fluorophenyl)ethanol Chemical compound NCC(O)C1=CC=CC=C1F MFGOFGRYDNHJTA-UHFFFAOYSA-N 0.000 claims description 5
- 239000012808 vapor phase Substances 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 239000012876 carrier material Substances 0.000 claims description 4
- 239000008139 complexing agent Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 229910001882 dioxygen Inorganic materials 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 2
- 229920000768 polyamine Polymers 0.000 claims description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 2
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 claims description 2
- 230000003381 solubilizing effect Effects 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 150000007524 organic acids Chemical class 0.000 claims 1
- 239000000243 solution Substances 0.000 description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000008367 deionised water Substances 0.000 description 9
- 229910021641 deionized water Inorganic materials 0.000 description 9
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- XNGYKPINNDWGGF-UHFFFAOYSA-L silver oxalate Chemical compound [Ag+].[Ag+].[O-]C(=O)C([O-])=O XNGYKPINNDWGGF-UHFFFAOYSA-L 0.000 description 6
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- 150000003378 silver Chemical class 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 159000000006 cesium salts Chemical class 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910001961 silver nitrate Inorganic materials 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- HQBYUMGOEJNFJB-UHFFFAOYSA-N 2-aminoethanol;azane Chemical compound N.NCCO HQBYUMGOEJNFJB-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-M Lactate Chemical compound CC(O)C([O-])=O JVTAAEKCZFNVCJ-UHFFFAOYSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- ZCLVNIZJEKLGFA-UHFFFAOYSA-H bis(4,5-dioxo-1,3,2-dioxalumolan-2-yl) oxalate Chemical compound [Al+3].[Al+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O ZCLVNIZJEKLGFA-UHFFFAOYSA-H 0.000 description 1
- NCMHKCKGHRPLCM-UHFFFAOYSA-N caesium(1+) Chemical compound [Cs+] NCMHKCKGHRPLCM-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229940006165 cesium cation Drugs 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- IRXRGVFLQOSHOH-UHFFFAOYSA-L dipotassium;oxalate Chemical compound [K+].[K+].[O-]C(=O)C([O-])=O IRXRGVFLQOSHOH-UHFFFAOYSA-L 0.000 description 1
- 238000006735 epoxidation reaction Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010414 supernatant solution Substances 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
- C07D301/04—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen
- C07D301/08—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase
- C07D301/10—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase with catalysts containing silver or gold
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/66—Silver or gold
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0203—Impregnation the impregnation liquid containing organic compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S502/00—Catalyst, solid sorbent, or support therefor: product or process of making
- Y10S502/506—Method of making inorganic composition utilizing organic compound, except formic, acetic, or oxalic acid or salt thereof
- Y10S502/509—Nitrogen containing organic compound
- Y10S502/511—Two or more nitrogen atoms bonded to different carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Epoxy Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/719,042 US4097414A (en) | 1976-08-30 | 1976-08-30 | Modified ethylene oxide catalyst and a process for its preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2734912A1 true DE2734912A1 (de) | 1978-03-02 |
| DE2734912C2 DE2734912C2 (enExample) | 1990-08-23 |
Family
ID=24888553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772734912 Granted DE2734912A1 (de) | 1976-08-30 | 1977-08-03 | Verfahren zur herstellung eines silberhaltigen katalysators und seine verwendung |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4097414A (enExample) |
| JP (1) | JPS5329294A (enExample) |
| AR (1) | AR224719A1 (enExample) |
| AU (1) | AU506431B2 (enExample) |
| BE (1) | BE858244A (enExample) |
| BR (1) | BR7704651A (enExample) |
| CA (1) | CA1093542A (enExample) |
| DE (1) | DE2734912A1 (enExample) |
| ES (1) | ES459143A1 (enExample) |
| FR (1) | FR2362665A1 (enExample) |
| GB (1) | GB1533813A (enExample) |
| IT (1) | IT1113595B (enExample) |
| NL (1) | NL179457C (enExample) |
| NZ (1) | NZ184034A (enExample) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4229321A (en) * | 1979-02-26 | 1980-10-21 | Texaco Development Corp. | Process for making a silver catalyst |
| US4224194A (en) * | 1979-02-26 | 1980-09-23 | Texaco Development Corp. | Process for preparing an ethylene oxide catalyst |
| US4235757A (en) * | 1979-09-27 | 1980-11-25 | Ppg Industries, Inc. | Ethylene epoxidation catalyst |
| JPS60216844A (ja) * | 1984-04-13 | 1985-10-30 | Nippon Shokubai Kagaku Kogyo Co Ltd | エチレンオキシド製造用銀触媒 |
| US4555501A (en) * | 1984-05-14 | 1985-11-26 | The Halcon Sd Group, Inc. | Process for preparing silver catalysts |
| US4864042A (en) * | 1984-05-14 | 1989-09-05 | Scientific Design Company, Inc. | Process for preparing silver catalysts |
| DE4311608A1 (de) * | 1993-04-08 | 1994-12-15 | Huels Chemische Werke Ag | Silberkatalysator zur Oxidation von Ethylen zu Ethylenoxid und Verfahren zur Herstellung von Ethylenoxid |
| US7361313B2 (en) * | 2003-02-18 | 2008-04-22 | Intel Corporation | Methods for uniform metal impregnation into a nanoporous material |
| RU2314156C2 (ru) * | 2002-06-28 | 2008-01-10 | Шелл Интернэшнл Рисерч Маатсхаппий Б.В. | Способ улучшения селективности катализатора и способ эпоксидирования олефина |
| US8148555B2 (en) * | 2003-06-26 | 2012-04-03 | Shell Oil Company | Method for improving the selectivity of a catalyst and a process for the epoxidation of an olefin |
| EP1979092A2 (en) * | 2006-02-03 | 2008-10-15 | Shell Internationale Research Maatschappij B.V. | A process for treating a catalyst, the catalyst, and use of the catalyst |
| EP2152411B1 (en) | 2007-05-09 | 2019-12-04 | Shell International Research Maatschappij B.V. | An epoxidation 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 |
| CN102056909B (zh) * | 2008-05-07 | 2014-03-05 | 国际壳牌研究有限公司 | 环氧化工艺的开车方法及环氧乙烷、1，2-二醇、1，2-二醇醚、1，2-碳酸酯或链烷醇胺的制备方法 |
| KR101629038B1 (ko) * | 2008-05-07 | 2016-06-09 | 셀 인터나쵸나아레 레사아치 마아츠샤피 비이부이 | 산화올레핀, 1,2-디올, 1,2-디올 에테르, 1,2-카보네이트 또는 알칸올아민의 생산방법 |
| KR101795088B1 (ko) * | 2009-11-09 | 2017-11-07 | 카네기 멜론 유니버시티 | 금속 잉크 조성물, 전도성 패턴, 방법, 및 장치 |
| EP2705734B1 (en) | 2011-05-04 | 2014-12-10 | Liquid X Printed Metals, Inc. | Metal alloys from molecular inks |
| US20130156971A1 (en) * | 2011-10-28 | 2013-06-20 | Liquid X Printed Metals, Inc. | Transparent conductive- and ito-replacement materials and structures |
| JP6247279B2 (ja) | 2012-03-27 | 2017-12-13 | ダウ テクノロジー インベストメンツ リミティド ライアビリティー カンパニー | マンガン含有担持銀触媒中間体の製造方法 |
| KR102316115B1 (ko) | 2013-12-19 | 2021-10-22 | 사이언티픽 디자인 컴파니 인코포레이티드 | 에틸렌 옥사이드 촉매 제조를 위한 고농도 은 용액 |
| EP3484860B1 (en) * | 2016-07-18 | 2021-01-13 | Scientific Design Company, Inc. | Epoxidation process |
| TWI772322B (zh) | 2016-09-02 | 2022-08-01 | 美商陶氏科技投資有限公司 | 製備環氧化催化劑之方法 |
| CA3043504A1 (en) | 2016-12-02 | 2018-06-07 | Shell Internationale Research Maatschappij B.V. | Methods for conditioning an ethylene epoxidation catalyst and associated methods for the production of ethylene oxide |
| EP3731963A1 (en) | 2017-12-28 | 2020-11-04 | Dow Technology Investments LLC | Process for preparing an epoxidation catalyst |
| WO2019245859A1 (en) | 2018-06-21 | 2019-12-26 | The J. David Gladstone Institutes | Generation of a population of hindbrain cells and hindbrain-like organoids from pluripotent stem cells |
| US11772082B1 (en) | 2018-06-21 | 2023-10-03 | Avn Corporation | Catalyst supports—composition and process of manufacture |
| CN112920187B (zh) * | 2021-01-27 | 2022-04-29 | 湖南工程学院 | 一种同时去除甲醛和合成金属配合物的方法及其应用 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2300512A1 (de) * | 1972-01-07 | 1973-07-26 | Shell Int Research | Neue silberkatalysatoren sowie deren herstellung und deren verwendung |
| DE2521906A1 (de) * | 1974-05-20 | 1975-12-04 | Shell Int Research | Silberkatalysator, verfahren zu seiner herstellung und seine verwendung |
| DE2159346C3 (de) * | 1970-12-02 | 1982-06-03 | Shell Internationale Research Maatschappij B.V., 2596 's-Gravenhage | Neue Silberkatalysatoren sowie Verfahren zur Herstellung von Äthylenoxid unter Verwendung dieser Katalysatoren |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3702259A (en) * | 1970-12-02 | 1972-11-07 | Shell Oil Co | Chemical production of metallic silver deposits |
| US4012425A (en) * | 1972-01-07 | 1977-03-15 | Shell Oil Company | Ethylene oxide process |
| GB1491447A (en) * | 1973-12-05 | 1977-11-09 | Ici Ltd | Alkylene oxide production and catalysts therefor |
-
1976
- 1976-08-30 US US05/719,042 patent/US4097414A/en not_active Expired - Lifetime
-
1977
- 1977-04-25 GB GB17057/77A patent/GB1533813A/en not_active Expired
- 1977-05-04 AU AU24874/77A patent/AU506431B2/en not_active Expired
- 1977-05-06 NZ NZ184034A patent/NZ184034A/xx unknown
- 1977-05-25 ES ES77459143A patent/ES459143A1/es not_active Expired
- 1977-05-26 FR FR7716118A patent/FR2362665A1/fr active Granted
- 1977-05-30 AR AR267839A patent/AR224719A1/es active
- 1977-06-03 IT IT24365/77A patent/IT1113595B/it active
- 1977-07-14 BR BR7704651A patent/BR7704651A/pt unknown
- 1977-07-29 CA CA283,791A patent/CA1093542A/en not_active Expired
- 1977-08-03 NL NLAANVRAGE7708569,A patent/NL179457C/xx not_active IP Right Cessation
- 1977-08-03 DE DE19772734912 patent/DE2734912A1/de active Granted
- 1977-08-26 JP JP10179877A patent/JPS5329294A/ja active Granted
- 1977-08-30 BE BE180544A patent/BE858244A/xx not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2159346C3 (de) * | 1970-12-02 | 1982-06-03 | Shell Internationale Research Maatschappij B.V., 2596 's-Gravenhage | Neue Silberkatalysatoren sowie Verfahren zur Herstellung von Äthylenoxid unter Verwendung dieser Katalysatoren |
| DE2300512A1 (de) * | 1972-01-07 | 1973-07-26 | Shell Int Research | Neue silberkatalysatoren sowie deren herstellung und deren verwendung |
| DE2521906A1 (de) * | 1974-05-20 | 1975-12-04 | Shell Int Research | Silberkatalysator, verfahren zu seiner herstellung und seine verwendung |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2362665B1 (enExample) | 1983-10-28 |
| DE2734912C2 (enExample) | 1990-08-23 |
| JPS6119300B2 (enExample) | 1986-05-16 |
| IT1113595B (it) | 1986-01-20 |
| BR7704651A (pt) | 1978-06-06 |
| AR224719A1 (es) | 1982-01-15 |
| AU506431B2 (en) | 1980-01-03 |
| CA1093542A (en) | 1981-01-13 |
| FR2362665A1 (fr) | 1978-03-24 |
| NL179457C (nl) | 1986-09-16 |
| NL7708569A (nl) | 1978-03-02 |
| NZ184034A (en) | 1979-06-08 |
| JPS5329294A (en) | 1978-03-18 |
| NL179457B (nl) | 1986-04-16 |
| GB1533813A (en) | 1978-11-29 |
| ES459143A1 (es) | 1978-11-01 |
| AU2487477A (en) | 1978-11-09 |
| BE858244A (fr) | 1978-02-28 |
| US4097414A (en) | 1978-06-27 |
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