Regeneration of oligomerisation catalysts and their use
US9168518B2 · kind B2 · utility
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Key dates
| Filing date | Apr 28, 2010 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | May 4, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Deactivation of a zeolite catalyst during its use to catalyse the oligomerisation of olefins, is often believed to be a result of the formation of high boiling polymers as by-products. These by-products can remain on the catalyst and undergo further conversion to higher molecular weight polymers, which resemble heavy tars and in some cases even have the appearance of coke-like material. These materials can coat the catalyst particles and plug pores in the catalyst, thereby causing catalyst deactivation. The invention relates to an improved method for regenerating such a catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.