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 language | English |
|---|---|
| Pages (from-to) | 81-90 |
| Number of pages | 10 |
| Journal | Journal of Catalysis |
| Volume | 300 |
| DOIs | |
| State | Published - 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