JPH0667475B2 - 酸化エチレン用銀含有触媒の製造方法 - Google Patents

酸化エチレン用銀含有触媒の製造方法

Info

Publication number
JPH0667475B2
JPH0667475B2 JP1024136A JP2413689A JPH0667475B2 JP H0667475 B2 JPH0667475 B2 JP H0667475B2 JP 1024136 A JP1024136 A JP 1024136A JP 2413689 A JP2413689 A JP 2413689A JP H0667475 B2 JPH0667475 B2 JP H0667475B2
Authority
JP
Japan
Prior art keywords
alumina
silver
catalyst
carrier
ethylene oxide
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 - Lifetime
Application number
JP1024136A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0256246A (ja
Inventor
ジン・ジクアン
ジン・グオクアン
ス・ヨン
シャン・リアンディ
ルオ・グオチュン
Original Assignee
ツオングオシヨファゴンツオンゴンシ
ベイジン・ヤンシャンシヨファゴンヤンジウユアン
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 ツオングオシヨファゴンツオンゴンシ, ベイジン・ヤンシャンシヨファゴンヤンジウユアン filed Critical ツオングオシヨファゴンツオンゴンシ
Publication of JPH0256246A publication Critical patent/JPH0256246A/ja
Publication of JPH0667475B2 publication Critical patent/JPH0667475B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B01J23/48—Silver or gold
    • B01J23/50—Silver
    • 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
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements 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)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Epoxy Compounds (AREA)
JP1024136A 1988-02-03 1989-02-03 酸化エチレン用銀含有触媒の製造方法 Expired - Lifetime JPH0667475B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN88100400A CN1009437B (zh) 1988-02-03 1988-02-03 乙烯氧化制环氧乙烷高效银催化剂
CN88100400.6 1988-02-03

Publications (2)

Publication Number Publication Date
JPH0256246A JPH0256246A (ja) 1990-02-26
JPH0667475B2 true JPH0667475B2 (ja) 1994-08-31

Family

ID=4831321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1024136A Expired - Lifetime JPH0667475B2 (ja) 1988-02-03 1989-02-03 酸化エチレン用銀含有触媒の製造方法

Country Status (6)

Country Link
US (1) US5063195A (cg-RX-API-DMAC10.html)
EP (1) EP0327356B1 (cg-RX-API-DMAC10.html)
JP (1) JPH0667475B2 (cg-RX-API-DMAC10.html)
CN (1) CN1009437B (cg-RX-API-DMAC10.html)
DE (1) DE68921777T2 (cg-RX-API-DMAC10.html)
IN (1) IN171804B (cg-RX-API-DMAC10.html)

Families Citing this family (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0428845B2 (de) * 1989-11-09 1998-12-23 Hüls Aktiengesellschaft Silberkatalysator für die Oxidation von Ethylen und Verfahren zu seiner Herstellung
US5173469A (en) * 1989-11-09 1992-12-22 Huels Aktiengesellschaft Silver catalyst suitable for oxidation of ethylene and process for the production of the catalyst
DE4106508A1 (de) * 1991-03-01 1992-09-03 Basf Ag Silberkatalysator
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
US5380697A (en) * 1993-09-08 1995-01-10 Shell Oil Company Ethylene oxide catalyst and process
DE69600628T2 (de) * 1995-02-01 1999-02-25 Shell Internationale Research Maatschappij B.V., Den Haag/S'gravenhage Alkylenoxidkatalysator und verfahren
US5739075A (en) * 1995-10-06 1998-04-14 Shell Oil Company Process for preparing ethylene oxide catalysts
US5801259A (en) * 1996-04-30 1998-09-01 Shell Oil Company Ethylene oxide catalyst and process
TW460325B (en) * 1998-11-17 2001-10-21 Nippon Catalytic Chem Ind Carrier for catalyst for use in production of ethylene oxide, catalyst for use in production of ethylene oxide, and method for production of ethylene oxide
US6831037B2 (en) * 2002-02-25 2004-12-14 Saint-Gobain Norpro Corporation Catalyst carriers
CN100553763C (zh) * 2002-02-25 2009-10-28 国际壳牌研究有限公司 负载的银催化剂和使用该催化剂的环氧化方法
US6987080B2 (en) * 2002-03-01 2006-01-17 Scientific Design Company, Inc. Ethylene oxide catalyst carrier preparation
CA2490892C (en) * 2002-06-28 2012-03-20 Shell Internationale Research Maatschappij B.V. A method for the start-up of an epoxidation process, a catalyst and a process for the epoxidation of an olefin
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
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
CA2538989A1 (en) * 2003-08-22 2005-03-17 Union Carbide Chemicals & Plastics Technology Corporation Modified alumina carriers and silver-based catalysts for the production of alkylene oxides
EP2277622B1 (en) * 2003-10-16 2013-01-09 Dow Technology Investments LLC Method for the preparation of catalysts having enhanced stability, efficiency and/or activity for alkylene oxide production
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
WO2006028544A2 (en) 2004-06-18 2006-03-16 Shell International Research Maatschappij B.V. A process for the production of an olefin oxide, a 1,2-diol, a 1.2-diol ether, or an alkanolamine
KR20070036133A (ko) * 2004-06-18 2007-04-02 셀 인터나쵸나아레 레사아치 마아츠샤피 비이부이 산화올레핀, 1,2-디올, 1,2-디올 에테르, 또는알칸올아민의 생산 방법
BRPI0514207A (pt) * 2004-08-12 2008-06-03 Shell Int Research método para a preparação de um catalisador moldado, o catalisador, e uso do catalisador
CA2578941C (en) * 2004-09-01 2014-07-08 Shell Internationale Research Maatschappij B.V. An olefin epoxidation process, a catalyst for use in the process, a carrier for use in preparing the catalyst, and a process for preparing the carrier
US8536083B2 (en) * 2004-09-01 2013-09-17 Shell Oil Company Olefin epoxidation process, a catalyst for use in the process, a carrier for use in preparing the catalyst, and a process for preparing the carrier
AU2005289799A1 (en) 2004-09-24 2006-04-06 Shell Internationale Research Maatschappij B.V. A process for selecting shaped particles, a process for installing a system, a process for reacting a gaseous feedstock in such a system, a computer program product, and a computer system
CA2598523C (en) * 2005-02-21 2015-11-24 Shell Internationale Research Maatschappij B.V. An olefin epoxidation process, a catalyst for use in the process, a carrier for use in making the catalyst, and a process for making the carrier
US7507844B2 (en) * 2005-05-09 2009-03-24 Sd Lizenzverwertungsgesellschaft Mbh & Co. Kg Nanometer scale restructuring of alumina carrier surface and catalysts for the production of alkene oxides
US7825062B2 (en) 2005-06-07 2010-11-02 Saint-Gobain Ceramics & Plastics, Inc. Catalyst carrier and a process for preparing the catalyst carrier
BRPI0611676B1 (pt) * 2005-06-07 2015-08-11 Shell Int Research Catalisador, processo para a preparação do catalisador, e processo para a produção de um óxido de olefina, um 1,2- diol, e um 1,2-diol éter e uma alcanolamina
US8791280B2 (en) * 2005-08-10 2014-07-29 Sd Lizenzverwertungsgesellschaft Mbh & Co. Kg Process for preparation of catalyst carrier and its use in catalyst preparation
ATE509002T1 (de) 2006-07-21 2011-05-15 Dow Global Technologies Llc Verbessertes dieselpartikelfilter
JP4267015B2 (ja) * 2006-09-29 2009-05-27 株式会社日本触媒 エチレンオキシド製造用触媒およびエチレンオキシドの製造方法
EP3677334B1 (en) 2006-11-01 2024-06-19 Dow Global Technologies Llc Alpha-alumina carrier for epoxidation catalyst and epoxidation method
CN103599798B (zh) 2007-05-09 2015-11-18 国际壳牌研究有限公司 环氧化催化剂及其制备方法和生产环氧烷、1,2-二醇、1,2-二醇醚、1,2-碳酸酯或烷醇胺的方法
US7507845B1 (en) * 2007-08-27 2009-03-24 Sd Lizenzverwertungsgesellschaft Mbh & Co Kg Process for production of an olefin oxide
US7714152B2 (en) 2007-08-30 2010-05-11 Sd Lizenzverwertungsgesellschaft Mbh & Co. Kg Carrier for olefin oxide catalyst
US20110054196A1 (en) * 2008-03-26 2011-03-03 Nippon Shokubai Co., Ltd. Catalyst for production of ethylene oxide, and method for production of ethylene oxide using the catalyst
PL2297125T3 (pl) 2008-05-07 2013-12-31 Shell Int Research Sposób wytwarzania tlenku olefiny, 1,2-diolu, eteru 1,2-diolu, 1,2-węglanu albo alkanoloaminy
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
US8933254B2 (en) 2008-07-14 2015-01-13 Basf Se Process for making ethylene oxide
JP5101428B2 (ja) * 2008-08-05 2012-12-19 株式会社日本触媒 エチレンオキシド製造用触媒の充填方法、エチレンオキシド製造用反応器およびエチレンオキシドの製造方法
US8513444B2 (en) * 2009-04-21 2013-08-20 Dow Technology Investments Llc Epoxidation reactions and operating conditions thereof
CA2759390C (en) 2009-04-21 2017-08-22 Dow Technology Investments Llc Methods for enhancing the efficiency of rhenium-promoted epoxidation catalysts and epoxidation methods utilizing these
US8524927B2 (en) 2009-07-13 2013-09-03 Velocys, Inc. Process for making ethylene oxide using microchannel process technology
JP2012522061A (ja) 2009-12-28 2012-09-20 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 アルキレンオキサイドの製造における銀触媒上への塩化銀の生成の制御方法
CN102905782B (zh) 2010-03-17 2015-04-08 陶氏技术投资有限责任公司 乙烯部分氧化生产环氧乙烷的固定床催化反应器
CN102397795B (zh) * 2010-09-13 2014-03-19 中国石油化工股份有限公司 环氧乙烷生产用银催化剂的载体、其制备方法、由其制成的银催化剂及其应用
CN102441435B (zh) 2010-09-30 2014-01-01 中国石油化工股份有限公司 制备银催化剂用氧化铝载体的方法、由此得到的载体及其应用
CN102463141B (zh) * 2010-11-02 2015-05-06 中国石油化工股份有限公司 一种氧化铝载体、其制备方法、由其制成的银催化剂及其应用
EP2649059B1 (en) 2010-12-10 2016-02-24 Dow Technology Investments LLC Method of reducing the value of an alkylene oxide production parameter in a process of making an alkylene oxide using a high efficiency catalyst
SG190901A1 (en) 2010-12-15 2013-07-31 Dow Technology Investments Llc Method of starting-up a process of producing an alkylene oxide using a high-efficiency catalyst
SG194966A1 (en) 2011-05-30 2013-12-30 Dow Technology Investments Llc Methods for testing structures, and selection methods using these
EP2718009B1 (en) 2011-06-06 2021-09-08 Dow Technology Investments LLC Methods for producing epoxidation catalysts
CN107020094B (zh) 2011-10-31 2019-10-11 陶氏技术投资有限责任公司 生产环氧化催化剂的方法和利用所述环氧化催化剂的环氧化方法
EP2788337B1 (en) 2011-12-09 2016-03-02 Dow Technology Investments LLC Method of maintaining the value of an alkylene oxide production parameter in a process of making an alkylene oxide using a high efficiency catalyst
CN104125858B (zh) 2011-12-19 2017-07-11 陶氏技术投资有限责任公司 根据催化剂参考性质配制环氧烷催化剂的方法
WO2013128402A2 (en) * 2012-03-02 2013-09-06 Basf Se Porous inorganic body
US9468906B2 (en) 2012-03-02 2016-10-18 Basf Se Porous inorganic body
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
CN103816941B (zh) * 2012-11-19 2016-03-30 中国石油化工股份有限公司 一种α-氧化铝载体及其制备方法
TWI712577B (zh) 2015-06-02 2020-12-11 美商科學設計有限公司 具有增強的孔結構的多孔體
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
TWI774707B (zh) 2016-12-02 2022-08-21 荷蘭商蜆殼國際研究所 用於調節乙烯環氧化催化劑之方法及用於製造環氧乙烷之相關方法
US10449520B2 (en) 2017-05-15 2019-10-22 Scientific Design Company, Inc. Porous bodies with enhanced crush strength
CN109107553B (zh) * 2017-06-23 2021-04-13 中国石油化工股份有限公司 氧化铝载体及其制备方法和银催化剂及应用
CN107902745B (zh) * 2017-11-30 2021-08-17 浙江奇彩环境科技股份有限公司 一种垃圾渗滤液浓水的处理方法
US11612881B2 (en) 2017-12-28 2023-03-28 Dow Technology Investments Llc Process for preparing an epoxidation catalyst
US10676401B2 (en) 2018-04-23 2020-06-09 Scientific Design Company, Inc. Porous bodies with enhanced pore architecture prepared with oxalic acid
CN112206798B (zh) * 2020-10-29 2022-03-22 润和催化材料(浙江)有限公司 一种乙烯氧化制环氧乙烷的银催化剂及其制备方法和应用
CN115475609A (zh) * 2021-06-15 2022-12-16 中国石油化工股份有限公司 一种具有高稳定性的α-氧化铝载体与银催化剂和烯烃环氧化方法
US20250282686A1 (en) * 2024-03-08 2025-09-11 Scientific Design Llc Methods of forming substantially all platelet alumina powders and alumina carriers

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172893A (en) * 1964-08-27 1965-03-09 Ethylene oxtoationximproved s silver catalyst
US3962136A (en) * 1972-01-07 1976-06-08 Shell Oil Company Catalyst for production of ethylene oxide
FR2179967B1 (cg-RX-API-DMAC10.html) * 1972-04-13 1978-03-03 Norton Co
GB1465523A (en) * 1973-01-26 1977-02-23 Norton Co Low surface area alumina
US4066575A (en) * 1976-07-26 1978-01-03 Halcon International, Inc. Process for the preparation of a supported silver catalyst
FR2396588A1 (fr) * 1977-07-08 1979-02-02 Ugine Kuhlmann Catalyseurs a base d'argent pour la production d'oxyde d'olefines
US4379134A (en) * 1981-02-13 1983-04-05 Union Carbide Corporation Process of preparing high purity alumina bodies
US4575494A (en) * 1984-02-08 1986-03-11 The Dow Chemical Company Alumina compositions useful as catalyst supports for ethylene oxidation
DE3669668D1 (de) * 1985-07-31 1990-04-26 Ici Plc Verfahren zur aktivierung der katalysatoren zur herstellung von alkylenoxiden.
GB8611121D0 (en) * 1986-05-07 1986-06-11 Shell Int Research Silver catalyst
JPH084745B2 (ja) * 1986-05-09 1996-01-24 三菱化学株式会社 エチレンオキシド製造用銀触媒

Also Published As

Publication number Publication date
CN1034678A (zh) 1989-08-16
EP0327356A1 (en) 1989-08-09
EP0327356B1 (en) 1995-03-22
CN1009437B (zh) 1990-09-05
US5063195A (en) 1991-11-05
DE68921777T2 (de) 1995-11-23
DE68921777D1 (de) 1995-04-27
IN171804B (cg-RX-API-DMAC10.html) 1993-01-09
JPH0256246A (ja) 1990-02-26

Similar Documents

Publication Publication Date Title
JPH0667475B2 (ja) 酸化エチレン用銀含有触媒の製造方法
JP3727653B2 (ja) エポキシ化触媒及び方法
TW344675B (en) Epoxidation catalyst and process
JP3295433B2 (ja) 触媒担体
CN100577289C (zh) 环氧乙烷生产用银催化剂的载体、其制备方法及其应用
EP1478458B1 (en) Catalyst carriers
CN105080617B (zh) 一种氧化铝载体的制备方法及其应用
JP2003144932A (ja) 酸化エチレン製造用触媒、その製造方法および当該触媒による酸化エチレンの製造方法
CN106955693B (zh) 乙烯环氧化用银催化剂的α-氧化铝载体及其制备与应用
JPH11507007A (ja) 触媒担体
CN108855238A (zh) 多孔氧化铝载体及其制备方法与银催化剂及应用
CN108855239A (zh) 多孔氧化铝载体及其制备方法与银催化剂及应用
CN108686712B (zh) 改性α-氧化铝载体及其制备方法和银催化剂及应用
CN107442109B (zh) 一种银催化剂载体、其制备方法及应用
CN106955692B (zh) 一种α-氧化铝载体、由其制备的银催化剂及其应用
CN115364835B (zh) 一种改性α-氧化铝载体和银催化剂及应用
CN114425373B (zh) 一种α-氧化铝载体及制备方法和银催化剂与应用
CN108607617B (zh) 一种制备用于银催化剂的氧化铝载体的方法及银催化剂
JP4726349B2 (ja) 酸化エチレン製造用触媒、その製造方法および当該触媒による酸化エチレンの製造方法
CN115364833A (zh) 一种α-氧化铝载体及其制备方法、乙烯环氧化用银催化剂及乙烯氧化方法
CN113526975B (zh) 一种具有梯度结构的氧化铝载体材料及其3d打印成型方法
JP3636912B2 (ja) エチレンオキシド製造用触媒の製造方法
CN109107553B (zh) 氧化铝载体及其制备方法和银催化剂及应用
CN112121780A (zh) 一种α-氧化铝载体及其制备方法和银催化剂与应用
JP2001062291A (ja) 酸化エチレン製造用触媒の担体、酸化エチレン製造用触媒および酸化エチレンの製造方法

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090831

Year of fee payment: 15

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090831

Year of fee payment: 15