Selective removing method of carbon monoxide and hydrogen refining method
US6482378B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2000 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Jun 7, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2203/048
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a selective carbon monoxide oxidizing catalyst capable of selectively oxidizing CO contained in a gaseous mixture containing H2, CO and an oxidizing agent of O2, comprising a carrier and an active metal consisting of at least one kind of metal selected from the group consisting of Pt, Pd, Ru, Rh and Ir and supported on the carrier, the carrier being a crystalline silicate having the highest to the fifth highest peaks in the powder X-ray diffraction using CuK&agr; ray in the lattice spacing of 3.65±0.1 å, 3.75±0.1 å, 3.85±0.1 å, 10.0±0.3 å, and 11.2±0.3 å, and having the composition represented by formula (1) under a dehydrated state:(1±0.8)R2O.[aM2O3.bNO.cAl2O3].ySiO2  (1)where R denotes at least one element selected from the group consisting of an alkali metal and H, M denotes at least one element selected from the group consisting of VIII group elements, rare earth elements, Ti, V, Cr, Nb, Sb and Ga, N denotes at least one element selected from the group consisting of Mg, Ca, Sr, and Ba, and the molar ratios a, b, c and y are: 0≦a, 0≦b≦20, a+c=1, and 11≦y≦3000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.