Catalytic performance of Ni-Mn/Al<sub>2</sub>O<sub>3</sub> catalyst for CO methanation in slurry-bed reactor

MENG Fanhui; CHANG Huirong; LI Zhong

doi:10.3969/j.issn.0438-1157.2014.08.021

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Catalytic performance of Ni-Mn/Al₂O₃ catalyst for CO methanation in slurry-bed reactor

更新时间：2025-12-10

- Catalytic performance of Ni-Mn/Al₂O₃ catalyst for CO methanation in slurry-bed reactor
- CIESC Journal Issue 8, Pages: 2997-3003(2014)
- 作者机构：
  
  太原理工大学煤科学与技术教育部和山西省重点实验室,山西,太原,030024
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.08.021
  CLC： Q546.4O643.3
- Online First：05 August 2014，
  
  Published：05 August 2014
- 稿件说明：
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MENG Fanhui, CHANG Huirong, LI Zhong. Catalytic performance of Ni-Mn/Al₂O₃ catalyst for CO methanation in slurry-bed reactor[J]. CIESC Journal, 2014, (8): 2997-3003. DOI: 10.3969/j.issn.0438-1157.2014.08.021.
DOI：

MENG Fanhui, CHANG Huirong, LI Zhong. Catalytic performance of Ni-Mn/Al₂O₃ catalyst for CO methanation in slurry-bed reactor[J]. CIESC Journal, 2014, (8): 2997-3003. DOI: 10.3969/j.issn.0438-1157.2014.08.021. DOI：

摘要

采用共浸渍法制备了Ni-Mn/Al2O3催化剂，考察了助剂Mn的含量对催化剂结构及浆态床CO甲烷化性能的影响。采用XRD、H2-TPR、BET、TEM、H2-化学吸附等表征对催化剂进行了测试分析，结果表明，Mn助剂的引入能够促进Ni物种在载体表面的分散，减弱Ni物种与载体的相互作用，降低催化剂的还原温度，提高催化剂的比表面积，减小活性金属Ni的晶粒尺寸。随着Mn含量的增加，Ni-Mn/Al2O3催化剂的甲烷化性能先升后降，其中以Mn含量为4%（质量分数）时的催化甲烷化性能最佳，添加过量的Mn导致活性组分Ni被部分覆盖，催化甲烷化性能下降。通过对16Ni4Mn/Al2O3催化剂样品的浆态床反应温度及反应压力的研究发现，当反应温度为280℃、反应压力为1.5 MPa时，催化剂样品16Ni4Mn/Al2O3的CO转化率及CH4选择性分别达到96.2%和88.8%。

Abstract

Ni-Mn/Al2O3 catalysts with different contents of Mn were prepared by co-impregnation method

and the catalytic performance for CO methanation in slurry-bed reactor was studied. The catalysts were characterized by XRD

H2-TPR

BET

TEM and H2-chemisorption. The addition of Mn promoted the dispersion of Ni species

weakened the interaction between Ni species and support

decreased the reduction temperature

increased the catalyst specific surface area and decreased the particle size of active metallic Ni. With the increase of Mn content

the catalytic performance of Ni-Mn/Al2O3 catalysts increased firstly and then decreased

and the catalyst Ni-Mn/Al2O3 with Mn content of 4% exhibited the best catalytic performance. Excess addition of Mn decreased catalytic performance

because the active component Ni was covered by Mn. The investigation on effects of reaction temperature and reaction pressure showed that under the reaction conditions of 280℃ and 1.5 MPa

conversion of CO and selectivity of CH4 for the catalyst sample 16Ni4Mn/Al2O3 reached 96.2% and 88.8%

respectively.

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Catalytic performance of Ni-Mn/Al2O3 catalyst for CO methanation in slurry-bed reactor

DOI：10.3969/j.issn.0438-1157.2014.08.021

摘要

Abstract

关键词

Keywords

references

Catalytic performance of Ni-Mn/Al₂O₃ catalyst for CO methanation in slurry-bed reactor