EP 2019730 A1 20090204 - OXIDATION CATALYST FOR THE PURIFICATION OF NITROGEN GAS CONTAINING ORGANIC IMPURITIES
Title (en)
OXIDATION CATALYST FOR THE PURIFICATION OF NITROGEN GAS CONTAINING ORGANIC IMPURITIES
Title (de)
OXIDATIONSKATALYSATOR ZUR REINIGUNG VON ORGANISCHE VERUNREINIGUNGEN ENTHALTENDEM STICKSTOFFGAS
Title (fr)
CATALYSEUR D'OXYDATION POUR LA PURIFICATION DU GAZ D'AZOTE CONTENANT DES IMPURETES ORGANIQUES
Publication
Application
Priority
- IN 2006000324 W 20060829
- IN 684MU2006 A 20060502
Abstract (en)
[origin: WO2007125539A1] An oxidation catalyst for the purification of nitrogen gas containing organic impurities. The catalyst comprises sulphated alumina with a sulphate loading of 1-20 percent weight alumina. The sulphated alumina is impregnated with an aqueous solution of a noble metal complex formed with a complexing agent. The noble metal content of the catalyst is 0.1 to 1 percent weight alumina and the surface penetration of the noble metal on the alumina is 100-150 microns. Also a method of preparing the oxidation catalyst by sulphating alumina with a sulphating agent to a sulphate loading of 1- 20 percent weight alumina; drying the alumina at 110-160ºC; calcining the alumina at 520-560ºC; complexing a noble metal in 0.1 to 1 percent weight alumina with a complexing agent; impregnating the sulphated alumina with an aqueous solution of the noble metal complex; drying the catalyst material at 110-160ºC; calcining the catalyst material at 520-560°C; reducing the catalyst material with hydrogen at 470-500ºC; and passivating the catalyst material by cooling it down to 25-50ºC in an inert atmosphere.
IPC 8 full level
B01J 23/40 (2006.01); B01D 53/44 (2006.01); B01J 21/04 (2006.01)
CPC (source: EP)
B01D 53/8628 (2013.01); B01J 27/053 (2013.01); B01J 37/0203 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/2092 (2013.01); B01J 33/00 (2013.01); B01J 35/397 (2024.01); B01J 35/51 (2024.01); B01J 35/615 (2024.01); B01J 35/647 (2024.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2007125539 A1 20071108; EP 2019730 A1 20090204; EP 2019730 A4 20101222
DOCDB simple family (application)
IN 2006000324 W 20060829; EP 06842729 A 20060829