Highly efficient V-Sb-O/SiO₂ catalyst with Sb atom-isolated VOx species for oxidative dehydrogenation of propane to propene

Title: Highly efficient V-Sb-O/SiO₂ catalyst with Sb atom-isolated VOx species for oxidative dehydrogenation of propane to propene
Creator: Zhang, Haidong; Cao, Shujie; Zou, Yu; Wang, Yi-Meng; Zhou, Xiaojing; Shen, Yu; Zheng, Xuxu
Relation: Catalysis Communications Vol. 45, p. 158-161
Publisher Link: http://dx.doi.org/10.1016/j.catcom.2013.11.014
Publisher: Elsevier BV
Resource Type: journal article
Date: 2014
Description: Silica supported vanadium–antimony mixed oxide catalyst (V–Sb–O/SiO₂) with the single ⎯⎯O⎯⎯Sb⎯⎯O⎯⎯V⎯⎯O⎯⎯Sb⎯⎯framework was prepared by a two-step impregnation method, in which SbCl₅ and NH₄VO₃ were introduced successively to generate monomeric VOx species isolated by Sb atoms. In the ODH of propane with O₂ as oxidant, the V–Sb–O/SiO₂ catalyst leads to high activity and high propene selectivity but depressed production of COx. At 600 °C, a 65.6% C₃H₆ selectivity with a 40.1% C₃H₈ conversion was obtained and then, a propene yield up to 26.3% was achieved on V–Sb–O/SiO₂ catalyst. This yield is comparable to that for V–Mg–O catalysts, SBA-15/MCM-41supported vanadia catalysts and vanadium-containing mesoporous silica materials.
Subject: propane; oxidative dehydrogenation; V-Sb mixed oxide; Sb atom-isolated VOx species
Identifier: http://hdl.handle.net/1959.13/1303454
Identifier: uon:20657
Identifier: ISSN:1566-7367
Language: eng
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