Process for dealuminization of the synthetic zeolites of large pores, catalysts and selective organophilic adsorbents containing the dealuminized zeolites obtained according to the process and essentially silicic beta zeolite
US5310534A · kind A · utility
26Cited by
5References
21Claims
0Family size
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Inventors
Key dates
| Filing date | Nov 26, 1991 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Nov 26, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/27
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is provided for dealuminization of zeolites having large pores, the diameter of the aperture of the pores being greater than or equal to about 0.7 nm and the silica/alumina ratio greater than or equal to about 6. The process comprises acid leaching of the raw zeolite containing the structuring agent. The dealuminized zeolites obtained are useful as catalysts for the transformation of hydrocarbons and as selective organophilic adsorbents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.