Catalysis of alkaline-modified mordenite for benzene alkylation of diolefin-containing dodecene for linear alkylbenzene synthesis

Je Shian Lin, Jhao Jyun Wang, Jenshi Wang, Ikai Wang, Rabindran J. Balasamy, Abdullah Aitani, Sulaiman Al-Khattaf, Tseng Chang Tsai*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

To improve the stability of the modified mordenite for resolving catalyst deactivation problem in the linear alkylbenzene (LAB) synthesis, the desilication treatment was found to be more effective than other approaches such as dealumination or metal/zeolite. The improved stability of the desilicated mordenite can be attributed to the enhanced diffusivity of oligomer by-products and coke precursors due to the enlarged mesopore size of the mordenite. In addition, 2-phenyl LAB isomer selectivity can be tuned by modification of the microporous structure of mordenite. The desilicated mordenite showed unprecedented stability and the 2-pheny LAB isomer yield up to 78% even if the octadiene-containing dodecene feed was used.

Original languageEnglish
Pages (from-to)81-90
Number of pages10
JournalJournal of Catalysis
Volume300
DOIs
StatePublished - Apr 2013

Bibliographical note

Funding Information:
We wish to thank Dr. Shang-Bin Liu for his 27 Al NMR measurements, Dr. Hung-Wen Jen for his fruitful discussions, and this study was financially supported by National Science Council, Republic of China under Grant NSC 98-2113-M-390-003-MY3. The authors from King Fahd University of Petroleum & Minerals (KFUPM) acknowledge the financial support provided by KACST for this research under the National Science, Technology & Innovation Plan (NSTIP) Project #11-PET1664-04. They also appreciate the support from KFUPM, Dhahran, Saudi Arabia.

Keywords

  • Alkaline post-treatment
  • Diolefin-containing dodecene feed
  • Linear alkylbenzene
  • Mordenite

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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