Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam

赵迎宪; 危凤; 虞影

doi:10.1016/S1004-9541(08)60147-0

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Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam

Updated：2026-01-06

- Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam
- Chinese Journal of Chemical Engineering Vol. 16, Issue 5, Pages: 726-732(2008)
- Affiliations：
  
  Ningbo Institute of Technology, Zhejiang University,Ningbo,China,315100
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(08)60147-0
  CLC：
- Published：2008
- Accepted：
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ZHAO Yingxian, WEI Feng, YU Ying. Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam[J]. , 2008, 16(5): 726-732.
DOI：

ZHAO Yingxian, WEI Feng, YU Ying. Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam[J]. , 2008, 16(5): 726-732. DOI： 10.1016/S1004-9541(08)60147-0.

摘要

Abstract

The effect of steam dilution on the formation of coke and minor products in 2-methylpenatne cracking on ultra stable HY at 673 K has been studied. The results show that steam dilution suppresses the formation of coke and minor aromatic products

but enhances the H/C atomic ratio of coke and the production of diolefins. This and other evidences suggest that steam dilution enhances the desorption of coke precursors

diolefinic ions and cyclic ions

by inhibiting the further pathological reactions to produce aromatics and polyaromatics. These insights into the chemistry underlying coke formation in hydrocarbon cracking on solid acid catalysts can potentially be applied to the development of additives which inhibit coke formation and control catalyst deactivation. Keywords 2-methylpentane

catalytic cracking

coke formation

steam dilution

inhibition

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