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An improved solid phosphoric acid catalyst for alkene oligomerization in a Fischer–Tropsch refinery

Paper ID Volume ID Publish Year Pages File Format Full-Text
44316 46014 2006 6 PDF Available
Title
An improved solid phosphoric acid catalyst for alkene oligomerization in a Fischer–Tropsch refinery
Abstract

An improved solid phosphoric acid catalyst has been developed for the oligomerization of C3–C5 alkenes, an important reaction for the refining of Fischer–Tropsch products. Catalyst particle strength is found to be the controlling design parameter when using a solid phosphoric acid catalyst for this application. The crushing strength is controlled by the relative amounts of the silicon ortho- and pyrophosphate phases present. The effect of the silicon ortho- to pyrophosphate ratio on the final catalyst was investigated by variation of key catalyst preparation parameters, namely: H3PO4 concentration, impregnation and calcination temperature and water addition. An improved catalyst with respect to crushing strength and hence lifetime, was prepared using an acid concentration of 115% H3PO4, an impregnation temperature of 220 °C and a calcination temperature of 420 °C. Water addition during calcination was found to be detrimental. Based on these findings, a new commercial catalyst was formulated which requires no binders. Comparative tests using commercial conditions showed a 30% increase in catalyst lifetime when compared to catalysts previously available.

Keywords
Oligomerization; Solid phosphoric acid; Fischer–Tropsch synthesis
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An improved solid phosphoric acid catalyst for alkene oligomerization in a Fischer–Tropsch refinery
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 308, 10 July 2006, Pages 204–209
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us