Study on performances of molybdenum carbide supported Ru-based catalysts for 5-nitrobenzothiazole hydrogenation

HUANG Jiayi; REN Xiaomin; MA Jun; CHU Wei; LIU Yuefeng

doi:10.12434/j.issn.2097-2547.20240116

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Study on performances of molybdenum carbide supported Ru-based catalysts for 5-nitrobenzothiazole hydrogenation

- Study on performances of molybdenum carbide supported Ru-based catalysts for 5-nitrobenzothiazole hydrogenation
- Vol. 50, Issue 1, Pages: 87-94(2025)
- 作者机构：
  
  1.四川大学化学工程学院，四川成都 610065
  2.中国科学院大连化学物理研究所，辽宁大连 116023
  3.大连交通大学环境与化学工程学院，辽宁大连 116028
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240116
  CLC： TQ426;O643.3
- Published：25 January 2025，
  
  Received：22 March 2024，
  
  Revised：15 April 2024，
- 稿件说明：
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HUANG JIAYI, REN XIAOMIN, MA JUN, et al. Study on performances of molybdenum carbide supported Ru-based catalysts for 5-nitrobenzothiazole hydrogenation. [J]. Low-carbon chemistry and chemical engineering, 2025, 50(1): 87-94.
DOI：

HUANG JIAYI, REN XIAOMIN, MA JUN, et al. Study on performances of molybdenum carbide supported Ru-based catalysts for 5-nitrobenzothiazole hydrogenation. [J]. Low-carbon chemistry and chemical engineering, 2025, 50(1): 87-94. DOI： 10.12434/j.issn.2097-2547.20240116.

摘要

使用负载型金属催化剂催化含硫底物加氢时，由于硫在金属表面的强吸附可导致催化剂活性变差甚至完全失活。采用过体积浸渍法制备了不同晶相碳化钼负载Ru基催化剂（Ru/

-MoC和Ru/

-Mo

C），并用于催化5-硝基苯并噻唑（5-NBT）加氢。利用SEM、XRD、HR-TEM和XPS等对催化剂进行了表征。结果表明，

-MoC上负载的Ru为原子级分散，而

-Mo

C上负载的Ru以纳米颗粒形式分散。在80 °C、2.0 MPa H

、3 mL乙醇、10 mg底物和10 mg催化剂的条件下，当5-NBT转化率低于30%时，Ru/

-MoC的5-NBT加氢反应速率为9113 μmol/(g·h)；反应40 min时，Ru/

-MoC的5-NBT转化率为100%。氢-氘交换实验结果证实

-MoC对5-NBT硝基的活化（吸附活化）有重要作用，而Ru对H

解离有促进作用，这两方面作用的协同效应使Ru/

-MoC在5-NBT加氢中表现出相对更高的催化性能。

Abstract

When the supported metal catalyst is used to catalyze the hydrogenation of sulfur-containing substrates

the activity of the catalyst can be deteriorated or even completely deactivated due to the strong adsorption of sulfur on the metal surface. Ru-based catalysts (Ru/

-MoC and Ru/

-Mo

C) supported by molybdenum carbide with different crystalline phases were prepared by over volume impregnation method and used to catalyze 5-nitrobenzothiazole (5-NBT) hydrogenation. The catalysts were characterized by SEM

XRD

HR-TEM and XPS

etc. The results show that the Ru loaded on

-MoC is atomically dispersed

while the Ru loaded on

-Mo

C is dispersed in the form of nanoparticles. Under the conditions of 80 ℃

2.0 MPa H

3 mL ethanol

10 mg substrate and 10 mg catalyst

the 5-NBT hydrogenation rate of Ru/

-MoC is 9113 μmol/(g·h) when the 5-NBT conversion rate is lower than 30%. After reaction for 40 min

the 5-NBT conversion rate of Ru/

-MoC is 100%. The result of

hydrogen-deium exchange experiment confirms that

-MoC plays an important role in the activation (adsorption activation) of 5-NBT nitro group

while Ru promotes H

dissociation. The synergistic effect of these two effects makes Ru/

-MoC show relatively higher catalytic performance in 5-NBT hydrogenation.

关键词

催化加氢Ru基催化剂碳化钼5-硝基苯并噻唑加氢

Keywords

catalytic hydrogenationRu-based catalystsmolybdenum carbide5-nitrobenzothiazole hydrogenation

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