Selective propylene epoxidation in liquid phase using highly dispersed Nb catalysts incorporated in mesoporous silicates

Wenjuan Yan; Yuhui Wu; Xiang Feng; Chaohe Yang; Xin Jin; Jian Shen

doi:10.1016/j.cjche.2018.03.001

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Selective propylene epoxidation in liquid phase using highly dispersed Nb catalysts incorporated in mesoporous silicates

Catalysis | Updated：2026-01-06

- Selective propylene epoxidation in liquid phase using highly dispersed Nb catalysts incorporated in mesoporous silicates
- Selective propylene epoxidation in liquid phase using highly dispersed Nb catalysts incorporated in mesoporous silicates
- 中国化学工程学报（英文版） 2018年第6期页码：1278-1284
- Affiliations：
  
  1. State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum,Qingdao,China,266580
  2. 2 Department of Environmental Science and Engineering, Xiangtan University,Xiangtan,China,411105
- Author bio：
- Funds：
  
  Supported by the China Postdoctoral Science Foundation (2017 M612374), the Natural Science Foundation of Shandong Province (ZR2017BB007), the Postdoctoral Research Funding of Shandong Province (201703016), the Qingdao Postdoctoral Research Funding (BY20170210), the Fundamental Research Funding of Qingdao (17-1-1-67-jch, 17-1-1-80-jch), the Fundamental Research Funds for the Central Universities (18CX02145A, 17CX02017A), the New Faculty Start-up Funding from China University of Petroleum (YJ201601058) and the Natural Science Foundation of China (21606254).
- DOI：10.1016/j.cjche.2018.03.001
  中图分类号：
- 纸质出版：2018
- Accepted：
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Wenjuan Yan, Yuhui Wu, Xiang Feng, 等. Selective propylene epoxidation in liquid phase using highly dispersed Nb catalysts incorporated in mesoporous silicates[J]. 中国化学工程学报（英文版）, 2018,(6):1278-1284.

Wenjuan Yan, Yuhui Wu, Xiang Feng, et al. Selective propylene epoxidation in liquid phase using highly dispersed Nb catalysts incorporated in mesoporous silicates[J]. Chinese Journal of Chemical Engineering, 2018, (6): 1278-1284.
Wenjuan Yan, Yuhui Wu, Xiang Feng, 等. Selective propylene epoxidation in liquid phase using highly dispersed Nb catalysts incorporated in mesoporous silicates[J]. 中国化学工程学报（英文版）, 2018,(6):1278-1284. DOI： 10.1016/j.cjche.2018.03.001.

Wenjuan Yan, Yuhui Wu, Xiang Feng, et al. Selective propylene epoxidation in liquid phase using highly dispersed Nb catalysts incorporated in mesoporous silicates[J]. Chinese Journal of Chemical Engineering, 2018, (6): 1278-1284. DOI： 10.1016/j.cjche.2018.03.001.

摘要

Abstract

Selective propylene epoxidation to propylene oxide (PO) with hydrogen peroxide (H

) was carried out in a catalytic semi-batch reactor. High propylene epoxidation activity (44 h

-1

) was observed over Nb based mesoporous silicate materials Nb-TUD-1 under mild operating conditions. The physical and chemical properties of the Nb based silicates characterized using BET

FTIR

TPD

TEM and UV-Vis revealed that the site isolation and surface acidity are crucial for PO production. Catalyst synthesis methods were investigated for their effects on PO productivity

PO selectivity and H

utilization efficiency. It is found that Nb-TUD-1 material synthesized by the sol-gel method is more active and selective than impregnated materials for liquid phase propylene epoxidation. Surface characterization confirms that thus synthesized Nb-TUD-1 catalysts have more Lewis acidity and less Bronsted acidity compared to the catalysts by impregnation.

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