Method for purifying hydrogen based gas mixture using a lithium- exchanged X zeolite
US5912422A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1998 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Jan 21, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for the separation of the hydrogen contained in a gas mixture contaminated by carbon monoxide and containing at least one other impurity chosen from the group consisting of carbon dioxide and saturated or unsaturated, linear, branched or cyclic C.sub.1 -C.sub.8 hydrocarbons, comprising bringing the gas mixture to be purified into contact, in an adsorption region, with at least: PA1 one first adsorbent selective at least for carbon dioxide and for C.sub.1 -C. hydrocarbons and PA1 one second adsorbent which is a zeolite of faujasite type exchanged to at least 80% with lithium, the Si/Al ratio of which is less than 1.5, in order to remove at least carbon monoxide (CO).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.