Effects of MnO<sub>x</sub> supports on light olefin synthesis using cobalt catalyst in Fischer-Tropsch reaction

LIU Yi; LIU Yong; CHEN Jianfeng; ZHANG Yi

doi:10.11949/j.issn.0438-1157.20150867

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Effects of MnO_x supports on light olefin synthesis using cobalt catalyst in Fischer-Tropsch reaction

更新时间：2025-12-10

- Effects of MnO_x supports on light olefin synthesis using cobalt catalyst in Fischer-Tropsch reaction
- CIESC Journal Issue 9, Pages: 3413-3420(2015)
- 作者机构：
  
  北京化工大学有机无机复合材料国家重点实验室,北京,100029
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150867
  CLC： Q028.1
- Online First：05 September 2015，
  
  Published：05 September 2015
- 稿件说明：
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LIU Yi, LIU Yong, CHEN Jianfeng, et al. Effects of MnO_x supports on light olefin synthesis using cobalt catalyst in Fischer-Tropsch reaction[J]. CIESC Journal, 2015, (9): 3413-3420. DOI: 10.11949/j.issn.0438-1157.20150867.
DOI：

LIU Yi, LIU Yong, CHEN Jianfeng, et al. Effects of MnO_x supports on light olefin synthesis using cobalt catalyst in Fischer-Tropsch reaction[J]. CIESC Journal, 2015, (9): 3413-3420. DOI: 10.11949/j.issn.0438-1157.20150867. DOI：

摘要

制备不同的Co/MnOx (Co/MnO、Co/MnO2、Co/Mn2O3、Co/Mn3O4) 催化剂

并利用XRD、SEM、TEM、BET、TPR、DRIFTS、XPS表征手段分析催化剂的理化性质

比较不同氧化锰载体对催化性能的影响

考察催化剂对低碳烯烃(C2=～C4=)的选择性影响。结果表明催化剂Co/MnO和Co/Mn3O4更容易还原

并且CO的吸附量较大

有利于实现较高的CO转化率;Co/Mn2O3和Co/Mn3O4中CO桥式吸附更高

有利于生成更多的-CH2-物种。综合考虑催化剂的活性和C2=～C4=选择性

Co/Mn3O4的费托合成(FTS)性能最好

其中C2=～C4=选择性为50.91%

烯烷比(O/P)为3.40。

Abstract

A series of Co/MnOx catalysts were prepared by impregnation method to investigate the effects of MnOx supports on selectivity of light olefins (C2=-C4=). The various catalysts were characterized by XRD

SEM

TEM

TPR and DRIFTS. The TPR results showed that the Co/MnO and Co/Mn3O4 were more easy to be reduced. The DRIFTS results indicated that Co/MnO and Co/Mn3O4 had much more adsorbed CO

which improved high CO conversion. The more bridge-adsorbed CO on Co/Mn2O3 and Co/Mn3O4 catalysts would contribute to forming more CH2 species. The FTS results revealed that Co/MnO and Co/Mn3O4 had better activity

and Co/Mn2O3 and Co/Mn3O4 realized better selectivity of C2=-C4=. The Co/Mn3O4 reached the 50.91% selectivity of C2=-C4= and olefin to paraffin ratio (O/P) of 3.40 within C2-C4.

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Effects of MnOx supports on light olefin synthesis using cobalt catalyst in Fischer-Tropsch reaction

DOI：10.11949/j.issn.0438-1157.20150867

摘要

Abstract

关键词

Keywords

references

Effects of MnO_x supports on light olefin synthesis using cobalt catalyst in Fischer-Tropsch reaction