Low dust adsorbents and catalysts and method for preparation
US6736882B2 · kind B2 · utility
4Cited by
31References
13Claims
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Key dates
| Filing date | Aug 26, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Aug 26, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is provided for production of low dust adsorbents and catalysts. A thin layer of metal oxide derived from a colloidal solution of the oxide is deposited on the adsorbent or catalyst particle, which greatly improves the physical properties of the particle with regards to attrition and dust formation while retaining the adsorbent and catalytic properties of the particle. The method is applicable to a variety of porous refractory oxides. For example, treatment with colloidal silica improves greatly the physical stability of alumina adsorbents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.