Literature DB >> 22191624

Observation of heptamethylbenzenium cation over SAPO-type molecular sieve DNL-6 under real MTO conversion conditions.

Jinzhe Li1, Yingxu Wei, Jingrun Chen, Peng Tian, Xiong Su, Shutao Xu, Yue Qi, Quanyi Wang, You Zhou, Yanli He, Zhongmin Liu.   

Abstract

The heptamethylbenzenium cation (heptaMB(+)) has been speculated to be one of the most important active intermediates involved in the "hydrocarbon pool" mechanism of methanol-to-olefin (MTO) conversion. By the use of DNL-6, a newly synthesized SAPO-type molecular sieve with large cavities, heptaMB(+) has for the first time been directly observed during methanol conversion under real working conditions. (13)C-labeling experiments suggested that olefin formation mediated by heptaMB(+) mainly follows the side-chain mechanism.
© 2011 American Chemical Society

Entities:  

Year:  2011        PMID: 22191624     DOI: 10.1021/ja209950x

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN: 0002-7863            Impact factor:   15.419


  5 in total

1.  Mechanistic investigation of methanol to propene conversion catalyzed by H-beta zeolite: a two-layer ONIOM study.

Authors:  Yingxin Sun; Sheng Han
Journal:  J Mol Model       Date:  2013-11-06       Impact factor: 1.810

2.  Initial Carbon-Carbon Bond Formation during the Early Stages of the Methanol-to-Olefin Process Proven by Zeolite-Trapped Acetate and Methyl Acetate.

Authors:  Abhishek Dutta Chowdhury; Klaartje Houben; Gareth T Whiting; Mohamed Mokhtar; Abdullah M Asiri; Shaeel A Al-Thabaiti; Suliman N Basahel; Marc Baldus; Bert M Weckhuysen
Journal:  Angew Chem Int Ed Engl       Date:  2016-11-02       Impact factor: 15.336

3.  Brønsted/Lewis acid sites synergistically promote the initial C-C bond formation in the MTO reaction.

Authors:  Yueying Chu; Xianfeng Yi; Chengbin Li; Xianyong Sun; Anmin Zheng
Journal:  Chem Sci       Date:  2018-06-27       Impact factor: 9.825

4.  Conversion of Methyl Mercaptan to Hydrocarbons over H-ZSM-5 Zeolite: DFT/BOMD Study.

Authors:  Miguel Reina; Ana Martinez; Claudia Cammarano; Cathérine Leroi; Vasile Hulea; Tzonka Mineva
Journal:  ACS Omega       Date:  2017-08-17

5.  Direct structural identification of carbenium ions and investigation of host-guest interaction in the methanol to olefins reaction obtained by multinuclear NMR correlations.

Authors:  Dong Xiao; Shutao Xu; Xiuwen Han; Xinhe Bao; Zhongmin Liu; Frédéric Blanc
Journal:  Chem Sci       Date:  2017-10-10       Impact factor: 9.825

  5 in total

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