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

Journal of Catalysis, Volume 300, April 2013, Pages 81–90
Catalysis of alkaline-modified mordenite for benzene alkylation of diolefin-containing dodecene for linear alkylbenzene synthesis
Je-Shian Lin (a), Jhao-Jyun Wang (b), Jenshi Wang (a), Ikai Wang (c), Rabindran J. Balasamy (d), Abdullah Aitani (d), Sulaiman Al-Khattaf (d), Tseng-Chang Tsai (b)
a Department of Chemical Engineering, Institute of Biotechnology and Chemical Engineering, I-Shou University, Kaohsiung 840, Taiwan, ROC
b Department of Applied Chemistry, National University of Kaohsiung, Kaohsiung 811, Taiwan, ROC
c Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan, ROC
d Center of Research Excellence in Refining & Petrochemicals, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
Abstract
Researchers determined desilication treatment to be more effective than other approaches for improving the stability of the modified mordenite for resolving the catalyst deactivation problem in the linear alkylbenzene (LAB) synthesis, as opposed to other approaches such as dealumination or metal/zeolite.
They attribute the improved stability to the enhanced diffusivity of oligomer by-products and coke precursors due to the enlarged mesopore size of the mordenite. Furthermore, 2-phenyl LAB isomer selectivity can be tuned by modification of the microporous structure of mordenite.
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