Issue 60, 2016, Issue in Progress

Partial oxidation of ethylbenzene by H2O2 on VOx/HZSM-22 catalyst

Abstract

A series of VOx/HZSM-22 catalysts for the partial oxidation of ethylbenzene was prepared with 0.09–2.86 wt% V loading by an incipient wetness impregnation method, and the catalysts were characterized by inductively coupled plasma-atomic emission spectrometer, X-ray diffraction, Fourier transform infrared spectroscopy, N2 physisorption analysis, X-ray photoelectron spectroscopy, diffuse reflectance ultraviolet-visible spectroscopy, temperature-programmed calcination-mass spectroscopy, and temperature-programmed hydrogen reduction. The results showed that the chemical nature of vanadium species on HZSM-22 depended on V loading. The amount of vanadium species incorporated into the framework of HZSM-22 increased with V loading firstly and reached a relatively stable value of about 0.2 wt%. The decomposed ammonia might reduce V5+ to V4+ in the calcination process. Highly dispersed extra-framework vanadium species, especially surface extra-framework V4+, promised a good effect on the oxidation of ethylbenzene, under optimized conditions, a high yield of 17.5% with 72.5% selectivity to acetophenone was obtained.

Graphical abstract: Partial oxidation of ethylbenzene by H2O2 on VOx/HZSM-22 catalyst

Supplementary files

Article information

Article type
Paper
Submitted
05 Mar 2016
Accepted
30 May 2016
First published
31 May 2016

RSC Adv., 2016,6, 55463-55471

Partial oxidation of ethylbenzene by H2O2 on VOx/HZSM-22 catalyst

L. Luo, H. Liu, G. Li and C. Hu, RSC Adv., 2016, 6, 55463 DOI: 10.1039/C6RA05906F

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