Issue 20, 2023

Direct methylation of benzene with methane over Co/MFI catalysts generated by self-dispersion of Co(OH)2

Abstract

A methane–benzene reaction was performed over Co/MFI prepared with an aqueous solution of Co(OAc)2 and MFI zeolite. Co(OH)2 was deposited on the MFI zeolite when the Co(OAc)2 solution was stirred at 343 K in the presence of MFI. A decline of the h-peak in NH3 TPD occurred during the loading of Co on MFI. Further thermal treatment at 573–773 K caused the spontaneous formation of the atomically dispersed Co species, which was observed with Co K-edge XAFS. The toluene formation rate of the catalyst prepared with Co(OAc)2 was proportional to the Co loading and was higher than that prepared with Co(NO3)2 due to the large amount of supported Co.

Graphical abstract: Direct methylation of benzene with methane over Co/MFI catalysts generated by self-dispersion of Co(OH)2

Supplementary files

Article information

Article type
Paper
Submitted
03 Mar 2023
Accepted
31 Aug 2023
First published
01 Sep 2023

Catal. Sci. Technol., 2023,13, 5969-5977

Author version available

Direct methylation of benzene with methane over Co/MFI catalysts generated by self-dispersion of Co(OH)2

K. Okumura, K. Tanaka, A. Ohtsuki, H. Iiyoshi and N. Katada, Catal. Sci. Technol., 2023, 13, 5969 DOI: 10.1039/D3CY00305A

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