KR870003820A - 에틸렌 옥사이드 제조용 촉매의 제조방법 - Google Patents

에틸렌 옥사이드 제조용 촉매의 제조방법 Download PDF

Info

Publication number
KR870003820A
KR870003820A KR1019850007549A KR850007549A KR870003820A KR 870003820 A KR870003820 A KR 870003820A KR 1019850007549 A KR1019850007549 A KR 1019850007549A KR 850007549 A KR850007549 A KR 850007549A KR 870003820 A KR870003820 A KR 870003820A
Authority
KR
South Korea
Prior art keywords
porous inorganic
inorganic refractory
refractory carrier
appearance
silver
Prior art date
Application number
KR1019850007549A
Other languages
English (en)
Other versions
KR900002456B1 (ko
Inventor
부미히데 다무라
미노루 사오도메
Original Assignee
이시가와 사부로
닛뽕 쇼꾸바이 가가꾸 고오교 가부시끼 가이샤
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8194399&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=KR870003820(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 이시가와 사부로, 닛뽕 쇼꾸바이 가가꾸 고오교 가부시끼 가이샤 filed Critical 이시가와 사부로
Publication of KR870003820A publication Critical patent/KR870003820A/ko
Application granted granted Critical
Publication of KR900002456B1 publication Critical patent/KR900002456B1/ko

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
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/30Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
    • 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
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/06Halogens; Compounds thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/40Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/50Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/06Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
    • B01J8/067Heating or cooling the reactor
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049Controlling or regulating processes
    • B01J2219/00051Controlling the temperature
    • B01J2219/00074Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094Jackets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/30Details relating to random packing elements
    • B01J2219/302Basic shape of the elements
    • B01J2219/30203Saddle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/30Details relating to random packing elements
    • B01J2219/302Basic shape of the elements
    • B01J2219/30215Toroid or ring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/30Details relating to random packing elements
    • B01J2219/302Basic shape of the elements
    • B01J2219/30223Cylinder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/30Details relating to random packing elements
    • B01J2219/304Composition or microstructure of the elements
    • B01J2219/30416Ceramic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/30Details relating to random packing elements
    • B01J2219/304Composition or microstructure of the elements
    • B01J2219/30475Composition or microstructure of the elements comprising catalytically active material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61Surface area
    • B01J35/612Surface area less than 10 m2/g
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63Pore volume
    • B01J35/633Pore volume less than 0.5 ml/g
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63Pore volume
    • B01J35/6350.5-1.0 ml/g
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Catalysts (AREA)

Abstract

내용 없음

Description

에틸렌 옥사이드 제조용 은 촉매의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 인터록스 세들(Intalox Saddle)담체의 사시도.
제 2 도는 인터록스 세들 담체의 정면도.
제 3 도는 인터록스 세들 담체의 측면도.

Claims (22)

  1. 에틸렌을 분자상 산소에 의하여 접촉기상 산화하여 에틸렌옥사이드를 제조하는데 사용되는 다공성 무기질 내화성 담체의 외표면과 세공 내벽면에 미세 은 입자를 분산 및 부착 시켜서된 은 촉매의 제조방법에 있어서, 은과 알카리 금속 및 알카리 금속 화합물로 구성된 군으로부터 선택된 적어도 1종의 조촉매를 인터록스 세들 또는 베를 세들의 형상을 갖는 다공성 무기질 내화성 담체의 담지시키고 최종적으로 함유 산소농도가 3용량% 이하의 불활성가스중에 550∼950℃의 범위에서 고온가열처리함을 특징으로 하는 에틸렌옥사이드 제조용 은 촉매의 제조방법.
  2. 제 1 항에 있어서, 다공성 무기질 내화성 담체의 비 표면적이 0.01∼10㎡/g인 방법.
  3. 제 1 항에 있어서, 다공성 무기질 내화성 담체의 외관의 체적에 대한 외관의 표면적의 비가 0.1∼10mm-1인 방법.
  4. 제 1 항에 있어서, 다공성 무기질 내화성 담체의 외관의 기공율이 20∼80%인 방법.
  5. 제 1 항에 있어서, 촉매에 대한 은이 담지량이 5∼30중량%인 방법.
  6. 제 1 항에 있어서, 조촉매의 양은 완성 촉매 1kg당 0.001∼0.05g 당량인 방법.
  7. 제 1 항에 있어서, 다공질 무기 내화성 담체의 비표면적이 0.1∼5㎡/g인 방법.
  8. 제 1 항에 있어서, 다공질 무기 내화성 담체의 외관의 체적에 대한 외관의 표면적의 비가 0.5∼5 mm-1인 방법.
  9. 제 1 항에 있어서, 다공질 무기 내화성 담체는 외관의 기공율이 30∼70%인 방법.
  10. 제 1 항에 있어서, 다공질 무기 내화성 담체는 인터록스 세들의 형상을 갖고서된 방법.
  11. 제 10 항에 있어서, 다공성 무기 내화성 담체는 비기공 용적 0.06∼1.0㏄/g, 외주의 길이(A) 3∼70mm, 내주의 길이(C) 1.5∼35mm, 두께(W) 0.1∼4mm, 외경(D) 0.5∼20mm와 길이 (E) 0.5∼65mm을 갖고서된 방법.
  12. 제 1 항에 있어서, 다공성 무기 내화성 담체는 베를 세들의 형상을 갖고서된 방법.
  13. 제 12 항에 있어서, 다공성 무기 내화성 담체는 비기공 용적 0.06∼1.0㏄/g, 외주의 길이(A) 3∼70mm, 내주의 길이(C) 1.5∼68mm, 두께(W) 0.1∼4mm, 외경(D) 0.5∼20mm와 길이(E) 0.5∼65mm을 갖고서된 방법.
  14. 제 1 항에 있어서, 알카리 금속이 칼륨, 루비듐 및 세슘으로 구성되어 있는 군으로부터 선택된 적어도 1종의 것인 방법.
  15. 제 14 항에 있어서, 알카리 금속서 세슘인 방법.
  16. 에틸렌을 분자상 산소에 의하여 접촉기상 산화하여서 에틸렌옥사이드를 제조함에 있어 사용되는 다공성 무기질 내화성 담체의 외표면과 세공 내벽면에 미세 은 입자를 분산 및 부착 시켜서 된 은 촉매의 제조방법에 있어서, 인터록스세들 또는 베를 세들의 형상을 갖는 다공성 무기질 내화성 담체에 환원성 화합물을 함유한 은 화합물 용액을 함침하고, 가열 환원시켜서 담체 외표면과 세공 내염에 금속은을 분산 담지 시킨후, 물과 저급알콜로써된 군으로부터 선택된 적어도 1종의 액체의 의하여 세정하고, 건조후 다시 이에 알카리 금속과 알카리 금속 화합물 함유 용액으로써된 군으로부터 선택된 적어도 1종의 것을 함침 시키고, 액성분을 증발 건조시켜서 됨을 특징으로 하는 에틸렌 옥사이드 제조용 은 촉매의 제조방법.
  17. 제 16 항에 있어서, 다공성 무기질 내화성 담체의 비표면적이 0.01∼10㎡/g인 방법.
  18. 제 16 항에 있어서, 다공성 무기질 내화성 담체의 외관의 체적에 대한 외관의 표면적의 비가 0.1∼10mm-1인 방법.
  19. 제 16 항에 있어서, 다공성 무기질 내화성 담체의 외관의 기공율이 20∼80%인 방법.
  20. 제 17 항에 있어서, 촉매에 대한 은의 담지량이 5∼30중량%인 방법.
  21. 제 16 항에 있어서, 조촉매의 양은 완성촉매 kg당 0.0001∼0.03g 당량인 방법.
  22. 제 16 항에 있어서, 알카리 금속은 칼륨, 루비듐과 세슘으로써된 군으로부터 선택된 적어도 1종의 것인 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019850007549A 1985-10-14 1985-10-14 에틸렌 옥사이드 제조용 은 촉매의 제조방법 KR900002456B1 (ko)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85307380A EP0218766B2 (en) 1985-10-14 1985-10-14 Silver catalyst for production of ethylene oxide and method for manufacture thereof

Publications (2)

Publication Number Publication Date
KR870003820A true KR870003820A (ko) 1987-05-04
KR900002456B1 KR900002456B1 (ko) 1990-04-16

Family

ID=8194399

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019850007549A KR900002456B1 (ko) 1985-10-14 1985-10-14 에틸렌 옥사이드 제조용 은 촉매의 제조방법

Country Status (3)

Country Link
EP (1) EP0218766B2 (ko)
KR (1) KR900002456B1 (ko)
DE (1) DE3563172D1 (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625113B1 (fr) * 1987-12-23 1993-10-22 Rhone Poulenc Chimie Catalyseurs pour traitement des effluents gazeux et procede de traitement de ces effluents
FR2664180B1 (fr) * 1990-07-03 1994-07-22 Inst Francais Du Petrole Procede de conversion catalytique d'une charge liquide et/ou gazeuse a contre courant et reacteur multiphasique pour sa mise en óoeuvre.
US7910518B2 (en) * 2008-03-10 2011-03-22 Sd Lizenzverwertungsgesellschaft Mbh & Co. Kg Geometrically sized solid shaped carrier for olefin epoxidation catalyst
EP2140933A1 (en) * 2008-07-02 2010-01-06 Werner Soyez Structured catalyst hold for pipe reactors
DE102014203725A1 (de) 2014-02-28 2015-09-03 Basf Se Oxidationskatalysator mit sattelförmigem Trägerformkörper

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3664970A (en) * 1969-04-17 1972-05-23 Halcon International Inc Ethylene oxide catalyst
US3962136A (en) * 1972-01-07 1976-06-08 Shell Oil Company Catalyst for production of ethylene oxide
AT333704B (de) * 1972-12-06 1976-12-10 Treibacher Chemische Werke Ag Trager fur oxydationskatalysatoren
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

Also Published As

Publication number Publication date
EP0218766A1 (en) 1987-04-22
EP0218766B2 (en) 1995-07-26
EP0218766B1 (en) 1988-06-08
KR900002456B1 (ko) 1990-04-16
DE3563172D1 (en) 1988-07-14

Similar Documents

Publication Publication Date Title
KR100374692B1 (ko) 은촉매제조방법
KR910002508A (ko) 황화합물의 산화용 촉매와 그의 제조방법
FR2412538A1 (fr) Catalyseurs a base d'argent pour la production d'oxyde d'ethylene
KR910002824A (ko) 산화에틸렌 생성방법
CA2180153A1 (en) Silver-supported epoxidation catalyst and process
DE69226626D1 (de) Katalysatoren und Verfahren für die Herstellung von Vinylacetat
MY130180A (en) Catalysts, process for the production thereof, and use thereof for the preparation of vinyl acetate
ES461026A1 (es) Procedimiento para preparar un catalizador de plata soporta-do.
AR246732A1 (es) Procedimiento para la preparacion de acetato de vinilo.
KR900011508A (ko) 산화에틸렌 제조용 은 촉매 및 그의 제조방법
DE3260134D1 (en) Process for the production of acroleine or methacroleine by catalytic oxidation of propylene, isobutylene or tert. butyl alcohol with gas mixtures that contain oxygen
KR880012515A (ko) 프탈산 무수물의 제조방법
FR2452317B1 (fr) Procede pour preparer un catalyseur, a base d'argent sur un support avec post-impregnation d'un metal alcalin, pour l'oxydation de l'ethylene en oxyde d'ethylene
KR910016378A (ko) 무수 프탈산 제조용 촉매
BG37676A3 (en) Method for preparing silver catalyst
GB1010985A (en) Improvements in catalysts for the oxidation of ethylene
FR2398021A1 (fr) Procede pour la preparation de bioxyde de silicium pur et poreux
KR870003820A (ko) 에틸렌 옥사이드 제조용 촉매의 제조방법
US4689316A (en) Method of preparing supported catalysts
CA2196059A1 (en) Process for preparing silver catalyst
ES8407297A1 (es) Procedimiento para la preparacion de catalizadores de plata.
ATE40958T1 (de) Traeger auf grund von silica und magnesiumchlorid, verfahren zu seiner herstellung und katalysatoren mit diesem traeger hergestellt.
GB1103678A (en) Silver catalysts
ES8105162A1 (es) Procedimiento para mejorar la eficacia de catalizadores con soporte de plata
ES464219A1 (es) Procedimiento para la preparacion de 3-metilpiridina.

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19930408

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee