Global Patent Index - EP 1051256 A1

EP 1051256 A1 2000-11-15 - METHOD FOR REGENERATING SUPPORTED CATALYSTS COVERED WITH GOLD PARTICLES AND USED FOR OXIDISING UNSATURATED HYDROCARBONS

Title (en)

METHOD FOR REGENERATING SUPPORTED CATALYSTS COVERED WITH GOLD PARTICLES AND USED FOR OXIDISING UNSATURATED HYDROCARBONS

Title (de)

VERFAHREN ZUR REGENERIERUNG VON MIT GOLDTEILCHEN BELEGTEN TRÄGERKATALYSATOREN FÜR DIE OXIDATION UNGESÄTTIGTER KOHLENWASSERSTOFFE

Title (fr)

PROCEDE POUR REGENERER DES CATALYSEURS A SUPPORTS, RECOUVERTS DE PARTICULES D'OR ET SERVANT A L'OXYDATION D'HYDROCARBURES INSATURES

Publication

EP 1051256 A1 (DE)

Application

EP 99901588 A

Priority

  • DE 19804711 A
  • EP 9900035 W

Abstract (en)

[origin: DE19804711A1] The invention relates to a method for regenerating supported catalysts covered with gold particles, based on titanium dioxide or titanium dioxide hydrate and used for oxidising unsaturated hydrocarbons in a gas phase. The invention is characterised in that the catalyst is regenerated by contacting it with water, a diluted acid or a diluted hydroperoxide solution, to restore its catalytic activity. The invention also relates to the use of regenerated catalysts for oxidising ethene, propene, 1-butene or 2-butene in the gas phase.

IPC 1-7 (main, further and additional classification)

B01J 38/60; B01J 38/70; B01J 23/96; C07D 301/10; B01J 23/52

IPC 8 full level (invention and additional information)

B01J 23/52 (2006.01); B01J 23/96 (2006.01); B01J 38/60 (2006.01); B01J 38/70 (2006.01); C07D 301/04 (2006.01); C07D 301/10 (2006.01); C07D 303/04 (2006.01)

CPC (invention and additional information)

C07D 301/04 (2013.01); B01J 23/52 (2013.01); B01J 23/96 (2013.01); B01J 38/60 (2013.01); B01J 38/70 (2013.01); C07D 301/10 (2013.01); Y02P 20/584 (2015.11)

Designated contracting state (EPC)

BE DE ES FR GB IT NL PT

EPO simple patent family

DE 19804711 A1 19990812; AU 2164699 A 19990823; BR 9907661 A 20001024; CA 2319612 A1 19990812; CN 1144621 C 20040407; CN 1290194 A 20010404; EP 1051256 A1 20001115; HU 0100768 A2 20010628; HU 0100768 A3 20050628; ID 25615 A 20001019; JP 2002502687 A 20020129; TW 513326 B 20021211; WO 9939827 A1 19990812

INPADOC legal status


2004-10-27 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040420

2004-03-10 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: BAYER MATERIALSCIENCE AG

- Ref Legal Event Code: RAP1

2003-04-16 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030226

2000-11-15 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000906

2000-11-15 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE ES FR GB IT NL PT

2000-11-15 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: RO PAYMENT 20000906