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Effect of calcination temperature on the catalytic performance of WVOx/SiO2 for gas-phase dehydration of glycerol
Author:
Affiliation:

1.School of Materials Science and Engineering, Chongqing Jiaotong University;2.Chengdu Institute of Organic Chemistry, Chinese Academy Sciences

Clc Number:

TQ224.1

Fund Project:

Chongqing City science and technology education research project（KJQN201800746）；:General Program of Chongqing National Natural Science Foundation （CSTB2022NSCQ-MSX1497）

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    Abstract:

    In this study, WVOx/SiO2 catalysts (CatT, T=350, 400, 450, 500, 600), prepared through impregnation method using industrial mesoporous SiO2 as support, were used in gas-glycerol catalytic conversion. The BET, XRD, NH3-TPD, and XPS results showed that CatT have a well-developed mesoporous structure (d0 5.1-6.8 nm) with specific surface area of 215-235 m2/g. The calcination temperature effectively turned and adjusted the distribution, chemical composition, and acidic strength of WVOx on the surface of SiO2. At 300 ℃, the gas-glycerol conversion over Cat400 reached 89.3%, with the selectivity of acrolein and acetaldehyde reached 53.4% and 22.1%, respectively, and the carbon balance of liquid condensation products reaches 86%. Cat400 also showed good regeneration ability.

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History
  • Received:September 01,2023
  • Revised:February 02,2024
  • Adopted:October 30,2023
  • Online: November 08,2024
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