Catalytic activity and sulfur-resistance stability of Ni-Mo-based catalysts for syngas methanation

WANG Yuhan; BAI Siyu; CUI Lijie; LIU Jiao; YU Jian; XU Guangwen

doi:10.11949/j.issn.0438-1157.20171098

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Catalytic activity and sulfur-resistance stability of Ni-Mo-based catalysts for syngas methanation

更新时间：2025-12-10

- Catalytic activity and sulfur-resistance stability of Ni-Mo-based catalysts for syngas methanation
- CIESC Journal Issue 5, Pages: 2063-2072(2018)
- 作者机构：
  
  1. 中国科学院大学,北京,100049
  2. 中国矿业大学研究生院,江苏,徐州,221008
  3. 中国科学院过程工程研究所,北京,100190
  4. 沈阳化工大学,辽宁,沈阳,110142
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171098
  CLC： Q426.94
- Online First：05 May 2018，
  
  Published：05 May 2018
- 稿件说明：
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WANG Yuhan, BAI Siyu, CUI Lijie, et al. Catalytic activity and sulfur-resistance stability of Ni-Mo-based catalysts for syngas methanation[J]. CIESC Journal, 2018, (5): 2063-2072.
DOI：

WANG Yuhan, BAI Siyu, CUI Lijie, et al. Catalytic activity and sulfur-resistance stability of Ni-Mo-based catalysts for syngas methanation[J]. CIESC Journal, 2018, (5): 2063-2072. DOI： 10.11949/j.issn.0438-1157.20171098.

摘要

采用沉淀-浸渍法合成一系列Ni-Mo基双金属催化剂，在固定床反应器中对其催化活性和耐硫性能进行评价，并辅以不同的表征手段阐释其作用机理。实验结果表明，以MCM-41分子筛为载体的催化剂活性和稳定性优于以NaY、γ-Al2O3和拟薄水铝石（PB）为载体的催化剂；反应前后催化剂的表征结果则说明Ni-Mo分子间适宜的相互作用是决定催化剂性能的关键。MCM-41载体催化剂中适宜的Ni-Mo分子间相互作用使得此催化剂中活性组分与载体间的相互作用适中，还原后的活性金属Ni能够均匀分散在载体表面，从而提高了催化剂的耐硫稳定性和抗积炭能力。不同Ni-Mo比同样会影响Ni-Mo分子间的相互作用，通过考察确定20Ni-10Mo/MCM-41的活性和稳定性最优。

Abstract

A series of Ni-Mo-based catalysts

prepared by precipitation-impregnation method

were studied for catalytic activity and sulfur resistance in a fixed bed reactor. Different characterization techniques were carried out to interpret their reaction mechanisms. Compared to catalysts with supports of NaY

γ-Al2O3 and pseudoboehmite (PB)

catalyst with MCM-41 support showed superior activity and stability. Characterization on catalysts before and after reaction showed that Ni-Mo interaction plays critical role in catalyst performance. In the catalyst supported with MCM-41

Ni-Mo interaction resulted in appropriate interaction between active species and support. Reduced active Ni was homogeneously dispersed on support surface

which enhanced sulfur-resistance stability and anti-carbon deposition. Different Ni/Mo ratios also affected Ni-Mo interaction in catalysts. It was found that the 20Ni-10Mo/MCM-41 catalysts exhibited the best performance.

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