Synthesis of dodecylbenzene via the alkylation of benzene and 1-dodecene over mesopore Beta zeolites

Baoyu Liu, Weijian Lu, Yikuan Liu, Qilong Feng, Yi (Harvey) Huang, Jin Shang, Yihan Zhu, Jinxiang Dong

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The alkylation of benzene with long chain α-olefins is a crucial process in the production of fine chemicals, which requires the upgrading from traditional homogeneous catalysis to heterogeneous catalysis involving zeolites. However, the application of zeolite catalysts has been limited by their fast deactivation due to constrained diffusion resulting from the sole micropores. To address this challenge, a desilication and secondary-crystallization strategy has been employed to fabricate hierarchically structured mesoporous Beta zeolites. The resultant mesoporous Beta zeolites demonstrate excellent catalytic activity and stability in the alkylation of benzene with 1-dodecene, arising from the exposed acid sites and enhanced internal diffusion. Importantly, the internal diffusion limitations for these mesopore Beta zeolites are negligible, which significantly extends their lifetime and improves their regeneration performance. To achieve these benefits, the degree of mesopores must be deliberately controlled. Overall, this approach provides a promising solution for achieving efficient and environmentally friendly alkylation processes.

Original languageEnglish
Article numbere18201
JournalAIChE Journal
Issue number11
Early online date1 Aug 2023
Publication statusPublished - Nov 2023

Keywords / Materials (for Non-textual outputs)

  • Beta zeolite
  • alkylation
  • diffusion
  • linear alkylbenzene


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