Nothing Special   »   [go: up one dir, main page]

ES457110A1 - Un procedimiento para preparar catalizadores de planta modi-ficados. - Google Patents

Un procedimiento para preparar catalizadores de planta modi-ficados.

Info

Publication number
ES457110A1
ES457110A1 ES457110A ES457110A ES457110A1 ES 457110 A1 ES457110 A1 ES 457110A1 ES 457110 A ES457110 A ES 457110A ES 457110 A ES457110 A ES 457110A ES 457110 A1 ES457110 A1 ES 457110A1
Authority
ES
Spain
Prior art keywords
catalyst
silver catalysts
preparing modified
modified silver
silver
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
Application number
ES457110A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of ES457110A1 publication Critical patent/ES457110A1/es
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/90Regeneration or reactivation
    • B01J23/96Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the noble metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54Catalysts 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
    • B01J23/66Silver or gold
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J38/00Regeneration or reactivation of catalysts, in general
    • B01J38/48Liquid treating or treating in liquid phase, e.g. dissolved or suspended
    • B01J38/485Impregnating or reimpregnating with, or deposition of metal compounds or catalytically active elements
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D301/00Preparation of oxiranes
    • C07D301/02Synthesis of the oxirane ring
    • C07D301/03Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
    • C07D301/04Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen
    • C07D301/08Synthesis 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
    • C07D301/10Synthesis 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/584Recycling of catalysts

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)

Abstract

Un procedimiento para preparar catalizadores de plata modificados que comprenden: a) someter un catalizador de plata que comprende de 1 a 35% en peso (basado en la totalidad del catalizador ) de plata sobre un soporte de catalizador refractario y poroso a un tratamiento de estabilización y b) depositar de 0,00004 a 0,008 pesos equivalentes-gramo por kilogramo (basados en la totalidad del catalizador) de iones de uno o más de los metales alcalinos potasio, rubidio o cesio sobre el catalizador estabilizado.
ES457110A 1976-03-25 1977-03-22 Un procedimiento para preparar catalizadores de planta modi-ficados. Expired ES457110A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12129/76A GB1574426A (en) 1976-03-25 1976-03-25 Process for preparing modified silver catalysts

Publications (1)

Publication Number Publication Date
ES457110A1 true ES457110A1 (es) 1978-03-01

Family

ID=9998894

Family Applications (2)

Application Number Title Priority Date Filing Date
ES457110A Expired ES457110A1 (es) 1976-03-25 1977-03-22 Un procedimiento para preparar catalizadores de planta modi-ficados.
ES458500A Expired ES458500A1 (es) 1976-03-25 1977-05-05 Un procedimiento para la obtencion de oxido de etileno.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES458500A Expired ES458500A1 (es) 1976-03-25 1977-05-05 Un procedimiento para la obtencion de oxido de etileno.

Country Status (18)

Country Link
US (1) US4033903A (es)
JP (1) JPS6041989B2 (es)
AU (1) AU509592B2 (es)
BE (1) BE852726A (es)
CA (1) CA1093054A (es)
CS (1) CS193089B2 (es)
DE (1) DE2712785A1 (es)
ES (2) ES457110A1 (es)
FR (1) FR2345210A1 (es)
GB (1) GB1574426A (es)
IN (1) IN156059B (es)
IT (1) IT1075948B (es)
MX (1) MX145653A (es)
NL (1) NL7703125A (es)
PL (2) PL109142B1 (es)
PT (1) PT66340B (es)
SE (2) SE417574B (es)
TR (1) TR19777A (es)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168247A (en) * 1976-05-28 1979-09-18 Imperial Chemical Industries Limited Catalysts for the production of alkylene oxides
GB1575810A (en) * 1976-10-21 1980-10-01 Shell Int Research Process for the performance of silver catalysts
DE2649359C3 (de) * 1976-10-29 1979-07-26 Hoechst Ag, 6000 Frankfurt Verfahren zur Verbesserung der Wirksamkeit von gebrauchten Silber-Trägerkatalysatoren
GB1594362A (en) * 1977-05-23 1981-07-30 Ici Ltd Production of alkylene oxides and catalysts therefor
JPS5929293B2 (ja) * 1977-07-01 1984-07-19 株式会社日本触媒 酸化エチレン製造用銀担持触媒の製造方法
DE2740480B2 (de) * 1977-09-08 1979-07-05 Hoechst Ag, 6000 Frankfurt Verfahren zur Verbesserung der Wirksamkeit von Silber-Trägerkatalysatoren
EP0002045B1 (de) * 1977-11-19 1981-09-02 BASF Aktiengesellschaft Verfahren zur Herstellung eines Äthylenoxydkatalysators
US4224194A (en) * 1979-02-26 1980-09-23 Texaco Development Corp. Process for preparing an ethylene oxide catalyst
US4342667A (en) * 1979-03-26 1982-08-03 The Halcon Sd Group, Inc. Process for preparing a silver catalyst
DE2936036A1 (de) * 1979-09-06 1981-04-02 EC Erdölchemie GmbH, 5000 Köln Verfahren zur herstellung von ethylenoxid
US4350616A (en) * 1980-07-03 1982-09-21 The Dow Chemical Company Method of making catalysts for the production of ethylene oxide
JPS57107240A (en) * 1980-12-26 1982-07-03 Nippon Shokubai Kagaku Kogyo Co Ltd Production of silver catalyst for producing ethylene oxide
US4391735A (en) * 1981-07-17 1983-07-05 Internorth, Inc. Cleaning and regenerating ethylene oxide catalysts
US4419276A (en) * 1981-09-30 1983-12-06 Union Carbide Corporation Silver catalyst for the manufacture of ethylene oxide and a process for preparing the catalyst
US4455392A (en) * 1981-10-05 1984-06-19 Union Carbide Corporation Process for preparing a supported silver catalyst
DE3272383D1 (en) * 1981-12-30 1986-09-04 Ici Plc Catalysts for the production of alkylene oxides
ZA829384B (en) * 1981-12-30 1983-10-26 Ici Plc Catalysts for the production of alkylene oxides
US4760042A (en) * 1982-03-24 1988-07-26 Scientific Design Company, Inc. Process for preparing an alkali metal-promoted silver catalyst
US4406820A (en) * 1982-04-02 1983-09-27 Internorth, Inc. Controlled addition of promoters to ethylene oxide catalysts
US4774222A (en) * 1982-06-16 1988-09-27 Scientific Design Company, Inc. Catalyst for oxidation of ethylene to ethylene oxide and process for preparing the catalyst
DE3229541A1 (de) * 1982-08-07 1984-02-09 Hoechst Ag, 6230 Frankfurt Verfahren zur verbesserung der wirksamkeit von gebrauchten silber-traegerkatalysatoren
JPS5973113U (ja) * 1982-11-09 1984-05-18 株式会社クボタ 耕耘カバ−装置
GB8304749D0 (en) * 1983-02-21 1983-03-23 Ici Plc Catalysts
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
DE3669668D1 (de) * 1985-07-31 1990-04-26 Ici Plc Verfahren zur aktivierung der katalysatoren zur herstellung von alkylenoxiden.
AU586048B2 (en) * 1985-11-12 1989-06-29 Nippon Shokubai Kagaku Kogyo Co. Ltd. Silver catalyst for production of ethylene oxide and method for manufacture thereof
JPS62114654A (ja) * 1985-11-14 1987-05-26 Nippon Shokubai Kagaku Kogyo Co Ltd エチレンオキシド製造用銀触媒の製造方法
JPS62114653A (ja) * 1985-11-12 1987-05-26 Nippon Shokubai Kagaku Kogyo Co Ltd エチレンオキシド製造用銀触媒およびその製造方法
DE3643248A1 (de) * 1986-12-18 1988-06-30 Basf Ag Silberkatalysator, seine herstellung und verwendung
DE68925767T2 (de) * 1988-08-30 1996-08-14 Union Carbide Corp Katalysatoren für die Herstellung von Ethylenoxid und Verfahren zur deren Herstellung
US5187140A (en) * 1989-10-18 1993-02-16 Union Carbide Chemicals & Plastics Technology Corporation Alkylene oxide catalysts containing high silver content
US5008413A (en) * 1989-10-23 1991-04-16 Scientific Design Company, Inc. Catalyst for oxidation of ethylene to ethylene oxide
US5081096A (en) * 1990-07-25 1992-01-14 Eastman Kodak Company Epoxidation catalyst
US5112795A (en) * 1990-10-12 1992-05-12 Union Carbide Chemicals & Plastics Technology Corporation Supported silver catalyst, and processes for making and using same
CA2037438A1 (en) * 1991-03-01 1992-09-02 Jack G. Pagotto Low chromium active charcoal
US5525740A (en) * 1993-03-01 1996-06-11 Scientific Design Company, Inc. Process for preparing silver catalyst and process of using same to produce ethylene oxide
US6184175B1 (en) * 1993-03-01 2001-02-06 Scientic Design Company, Inc. Process for preparing silver catalyst
US5602070A (en) * 1995-01-09 1997-02-11 Scientific Design Company, Inc. Process for preparing silver catalyst
US6455713B1 (en) * 1998-09-14 2002-09-24 Eastman Chemical Company Reactivation of Cs-promoted, Ag catalysts for the selective epoxidation of butadiene to 3,4-epoxy-1-butene
US20040224841A1 (en) * 2003-05-07 2004-11-11 Marek Matusz Silver-containing catalysts, the manufacture of such silver-containing catalysts, and the use thereof
CA2524890C (en) 2003-05-07 2012-09-11 Shell Internationale Research Maatschappij B.V. Silver-containing catalysts, the manufacture of such silver­containing catalysts, and the use thereof
US20040225138A1 (en) * 2003-05-07 2004-11-11 Mcallister Paul Michael Reactor system and process for the manufacture of ethylene oxide
TW200602123A (en) * 2004-04-01 2006-01-16 Shell Int Research Process for preparing a catalyst, the catalyst, and a use of the catalyst
TW200613056A (en) * 2004-04-01 2006-05-01 Shell Int Research A process for preparing a silver catalyst, the catalyst, and a use of the catalyst for olefin oxidation
TW200600190A (en) * 2004-04-01 2006-01-01 Shell Int Research Process for preparing a silver catalyst, the catalyst, and use thereof in olefin oxidation
CN101072631B (zh) * 2004-09-24 2013-02-13 国际壳牌研究有限公司 用来选择成形颗粒的过程、用来安装系统的过程、用来在这样一种系统中使气体原料反应的过程、计算机程序产品、及计算机系统
US20070203350A1 (en) * 2005-12-22 2007-08-30 Bolk Jeroen W Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process
US20070203349A1 (en) * 2005-12-22 2007-08-30 Bolk Jeroen W Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process
US20070197801A1 (en) * 2005-12-22 2007-08-23 Bolk Jeroen W Method of installing an epoxidation catalyst in a reactor, a method of preparing an epoxidation catalyst, an epoxidation catalyst, a process for the preparation of an olefin oxide or a chemical derivable from an olefin oxide, and a reactor suitables for such a process
US20070203352A1 (en) * 2005-12-22 2007-08-30 Bolk Jeroen W Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process
US20070213545A1 (en) * 2005-12-22 2007-09-13 Bolk Jeroen W Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process
US7459589B2 (en) * 2005-12-22 2008-12-02 Shell Oil Company Process for the preparation of an alkylene glycol
US7750170B2 (en) * 2005-12-22 2010-07-06 Shell Oil Company Process for mixing an oxidant having explosive potential with a hydrocarbon
US20070197808A1 (en) * 2005-12-22 2007-08-23 Bolk Jeroen W Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process
US7704908B2 (en) * 2005-12-22 2010-04-27 Shell Oil Company Method for reusing rhenium from a donor spent epoxidation catalyst
US8357812B2 (en) * 2005-12-22 2013-01-22 Shell Oil Company Process for preparing a rejuvenated epoxidation catalyst
US20070154377A1 (en) * 2005-12-22 2007-07-05 Rekers Dominicus M Process for the removal of combustible volatile contaminant materials from a process stream
US20070151451A1 (en) * 2005-12-22 2007-07-05 Rekers Dominicus M Process for the cooling, concentration or purification of ethylene oxide
US20070203348A1 (en) * 2005-12-22 2007-08-30 Bolk Jeroen W Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process
JP5313665B2 (ja) * 2006-05-02 2013-10-09 株式会社日本触媒 オレフィンの部分酸化用触媒、その製造方法およびアルキレンオキサイドの製造方法
US20080154052A1 (en) * 2006-12-20 2008-06-26 Jeroen Willem Bolk Method of installing an epoxidation catalyst in a reactor, a method of preparing an epoxidation catalyst, an epoxidation catalyst, a process for the preparation of an olefin oxide or a chemical derivable from an olefin oxide, and a reactor suitable for such a process
US20080154051A1 (en) * 2006-12-20 2008-06-26 Jeroen Willem Bolk Method of installing an epoxidation catalyst in a reactor, a method of preparing an epoxidation catalyst, an epoxidation catalyst, a process for the preparation of an olefin oxide or a chemical derivable from an olefin oxide, and a reactor suitable for such a process
WO2017019538A1 (en) * 2015-07-24 2017-02-02 Lyondell Chemical Technology, L.P. Post treated silver catalysts for epoxidation
EP3484860B1 (en) * 2016-07-18 2021-01-13 Scientific Design Company, Inc. Epoxidation process
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671764A (en) * 1951-10-01 1954-03-09 Jefferson Chem Co Inc Promoted supported silver surface catalyst and process of preparing same
GB1170663A (en) * 1967-03-22 1969-11-12 Shell Int Research Process for preparing Silver Catalysts
US3962136A (en) * 1972-01-07 1976-06-08 Shell Oil Company Catalyst for production of ethylene oxide
CA1026763A (en) * 1974-05-20 1978-02-21 Robert P. Nielsen Silver catalysts used in ethylene oxide production

Also Published As

Publication number Publication date
GB1574426A (en) 1980-09-10
FR2345210A1 (fr) 1977-10-21
CS193089B2 (en) 1979-09-17
BE852726A (nl) 1977-09-22
PL114020B1 (en) 1981-01-31
IN156059B (es) 1985-05-04
IT1075948B (it) 1985-04-22
SE7703337L (sv) 1977-09-26
SE417574B (sv) 1981-03-30
US4033903A (en) 1977-07-05
TR19777A (tr) 1979-11-30
AU509592B2 (en) 1980-05-15
JPS6041989B2 (ja) 1985-09-19
PT66340B (en) 1978-08-16
ES458500A1 (es) 1978-04-01
PL109142B1 (en) 1980-05-31
JPS52117293A (en) 1977-10-01
DE2712785A1 (de) 1977-09-29
CA1093054A (en) 1981-01-06
MX145653A (es) 1982-03-19
DE2712785C2 (es) 1987-07-30
PT66340A (en) 1977-04-01
AU2354477A (en) 1978-09-28
SE435718B (sv) 1984-10-15
SE7808825L (sv) 1978-09-24
NL7703125A (nl) 1977-09-27
FR2345210B1 (es) 1982-04-02

Similar Documents

Publication Publication Date Title
ES458500A1 (es) Un procedimiento para la obtencion de oxido de etileno.
SE7509856L (sv) Forfarande for framstellning av etylenoxid
ES461026A1 (es) Procedimiento para preparar un catalizador de plata soporta-do.
ES463341A1 (es) Un procedimiento para mejorar el comportamiento de los cata-lizadores de plata que han sido empleados en la preparacion de oxido de etileno.
PT86038A (en) Process for preparing an ethylene oxide catalyst and process for the catalytic production of ethylene oxide
AU522992B2 (en) Process for improving the activity of used supported silver catalysts
JPS6434444A (en) Production of silver-containing catalyst
ES459143A1 (es) Un procedimiento para la preparacion de un catalizador de plata con soporte, modificado con cesio.
JPS57107240A (en) Production of silver catalyst for producing ethylene oxide
JPS5413485A (en) Preparation of silver-supported catalyst for production of ethylene oxide
ES8404875A1 (es) Procedimiento para preparar un catalizador de plata soportado y promovido con metal alcalino.
ES8407297A1 (es) Procedimiento para la preparacion de catalizadores de plata.
FR2451920A1 (fr) Nouveau catalyseur a l'argent, son procede de production et son application a l'oxydation d'ethylene en oxyde d'ethylene
NO162854C (no) Fremgangsmaate for fremstilling av etylen-etan blandinger.
ES452617A1 (es) Procedimiento para la obtencion de anhidrido de acido ftali-co.
JPS51125307A (en) Process for preparation of hexafluoropropene oligomers
ES463432A1 (es) Procedimiento para mejorar la actividad de catalizadores portadores de plata usados.
ES8203236A1 (es) Procedimiento para obtener catalizadores de plata especialmente activados y de duracion prolongada.
GB1530655A (en) Process for the production of tricosene-(9)and heneicosene-(9)
GB1531596A (en) Silver-based catalytic composition especially for the oxidation of ethylene to ethylene oxide
ES447348A1 (es) Procedimiento para la reactivacion de catalizadores de platausados para obtener oxido de etileno de acuerdo con el pro- cedimiento de oxidacion directa.
ES8404201A1 (es) Procedimiento para mejorar la actividad de catalizadores de plata con soporte, gastados
JPS5225703A (en) Process for preparation of ethylene oxide
DE2861192D1 (en) Process for the oxidation of olefins using molybdenum containing catalysts containing various promoter elements
JPS5689843A (en) Silver catalyst for production of ethylene oxide

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971103