Agglomerate absorbents comprising copper and zinc useful for sulphur compounds removal
US4996181A · kind A · utility
14Cited by
13References
4Claims
0Family size
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Key dates
| Filing date | Aug 24, 1989 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Aug 24, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/3078
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Agglomerates containing oxide, hydroxides, carbonates and/or basic carbonates of copper, and zinc and/or another element such as aluminium or silicon, are useful for removal of sulphur compounds from fluids, especially under non-reducing conditions. The agglomerates have surface area above 80 m.sup.2.g.sup.-1 and a calcined density below 1.5 g.cm.sup.-3. After ignition, the cupric oxide plus zinc oxide (if any) content of the agglomerates is at least 70% w/w. The proportion of the copper compound is such that the copper atoms constitute 30-97% of the total of the copper, zinc, and said other element atoms in the agglomerates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.