Oxidative dehydrogenation of ethane with carbon dioxide over silica molecular sieves supported chromium oxides: Pore size effect

Zhibin Deng; Xing Ge; Wenting Zhang; Shizhong Luo; Jun Shen; Fangli Jing; Wei Chu

doi:10.1016/j.cjche.2020.08.006

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Oxidative dehydrogenation of ethane with carbon dioxide over silica molecular sieves supported chromium oxides: Pore size effect

Catalysis, Kinetics and Reaction Engineering | Updated：2026-01-06

- Oxidative dehydrogenation of ethane with carbon dioxide over silica molecular sieves supported chromium oxides: Pore size effect
- Oxidative dehydrogenation of ethane with carbon dioxide over silica molecular sieves supported chromium oxides: Pore size effect
- 中国化学工程学报（英文版） 2021年34卷第6期页码：77-86
- Affiliations：
  
  1. College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan,China,618307
  2. Sinopec Petroleum Exploration and Production Research Institute, Northwest Oilfield Branch,Urumqi,China,830011
  3. School of Chemical Engineering, Sichuan University,Chengdu,China,610065
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.08.006
  中图分类号：
- 纸质出版：2021
- Accepted：
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Zhibin Deng, Xing Ge, Wenting Zhang, 等. Oxidative dehydrogenation of ethane with carbon dioxide over silica molecular sieves supported chromium oxides: Pore size effect[J]. 中国化学工程学报（英文版）, 2021,34(6):77-86.

Zhibin Deng, Xing Ge, Wenting Zhang, Shizhong Luo, Jun Shen, Fangli Jing, Wei Chu. Oxidative dehydrogenation of ethane with carbon dioxide over silica molecular sieves supported chromium oxides: Pore size effect[J]. Chinese Journal of Chemical Engineering, 2021, 34(6): 77-86.
Zhibin Deng, Xing Ge, Wenting Zhang, 等. Oxidative dehydrogenation of ethane with carbon dioxide over silica molecular sieves supported chromium oxides: Pore size effect[J]. 中国化学工程学报（英文版）, 2021,34(6):77-86. DOI： 10.1016/j.cjche.2020.08.006.

Zhibin Deng, Xing Ge, Wenting Zhang, Shizhong Luo, Jun Shen, Fangli Jing, Wei Chu. Oxidative dehydrogenation of ethane with carbon dioxide over silica molecular sieves supported chromium oxides: Pore size effect[J]. Chinese Journal of Chemical Engineering, 2021, 34(6): 77-86. DOI： 10.1016/j.cjche.2020.08.006.

摘要

Abstract

SBA-15 with varied pore size from 4 to 8 nm were synthesized by tuning the temperature of hydrothermal treatment

the supports were then used to load the active phase CrO

through a conventional impregnation method. The resulting catalysts were characterized by small/wide angle XRD

adsorption/desorption

FT-IR

TEM-EDX

XPS

TPR and CO

-TPD to study the feature of structure

surface chemical state

redox and basicity. It was found from these results that the metal species could be well dispersed on catalysts with larger pore size. Cr

species could enter into the framework by substituting the Si atoms of SBA-15

and Cr

mainly exist on extra framework. Pore size had profound effects on reducibility

surface composition and basicity. Cr

species were necessary to activate the C-H bonds of alkanes

while the basicity played an important role in activating C-O bonds of CO

. The best performances were achieved over the sample Cr supported on SBA-15 with a pore diameter of 7 nm in oxidative dehydrogenation of ethane in the presence of CO

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