Gas stream purification
US4554141A · kind A · utility
40Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1984 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | May 14, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S95/902
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the removal of ethylene from silane. Hydrocarbon-contaminated silane is preferably first distilled in a conventional distillation column to remove hydrocarbons boiling higher and lower than silane. Ethylene is removed by passing the silane stream through a column of zeolite, preferably zeolite A having a 4 Angstrom micropore. The 4 Angstrom zeolite A has a high capacity for ethylene and is readily regenerated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.