Ce和Mn改性Co/AC催化合成气制低碳醇性能研究

武璐瑶; 韩春; 许烨凡; 黄伟

doi:10.12434/j.issn.2097-2547.20250151

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Ce和Mn改性Co/AC催化合成气制低碳醇性能研究

低碳分子转化合成 | 更新时间：2026-02-13

- Ce和Mn改性Co/AC催化合成气制低碳醇性能研究
- Study on catalytic performances of Ce and Mn modified Co/AC for producing low carbon alcohols from syngas
- 低碳化学与化工 2026, 51(2): 66-74.
- 作者机构：
  
  太原理工大学化学与化工学院省部共建煤基能源清洁高效利用国家重点实验室，山西太原 030024
- 作者简介：
  
  武璐瑶（1999—），硕士研究生，研究方向为碳一化学与多相催化，E-mail：ly21109@163.com。
  黄伟（1962—），博士，教授，研究方向为碳一化学与多相催化，E-mail：huangwei@tyut.edu.cn。
- 基金信息：
  
  国家自然科学基金(21908157);山西省中央引导地方科技发展项目(YDZJSX2024C007)
- DOI：10.12434/j.issn.2097-2547.20250151
  中图分类号： TQ426;TQ223.1
- 收稿：2025-04-03，
  
  修回：2025-05-12，
  
  纸质出版：2026-02-25
- 稿件说明：
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武璐瑶,韩春,许烨凡等.Ce和Mn改性Co/AC催化合成气制低碳醇性能研究[J].低碳化学与化工,2026,51(2):66-74.

WU Luyao,HAN Chun,XU Yefan,et al.Study on catalytic performances of Ce and Mn modified Co/AC for producing low carbon alcohols from syngas[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(2):66-74.
武璐瑶,韩春,许烨凡等.Ce和Mn改性Co/AC催化合成气制低碳醇性能研究[J].低碳化学与化工,2026,51(2):66-74. DOI： 10.12434/j.issn.2097-2547.20250151.

WU Luyao,HAN Chun,XU Yefan,et al.Study on catalytic performances of Ce and Mn modified Co/AC for producing low carbon alcohols from syngas[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(2):66-74. DOI： 10.12434/j.issn.2097-2547.20250151.

摘要

合成气制低碳醇（C

醇）因其良好的经济性而受到了广泛关注。Co基催化剂是合成气制低碳醇的主要催化剂之一，但该催化剂目前存在低碳醇选择性较低的问题。采用共沉淀法分别制备了Ce、Mn改性Co/AC催化剂（Ce-Co/AC和Mn-Co/AC，Co质量分数为15.0%，Ce、Mn质量分数均为7.5%），使用XRD、N

吸/脱附和H

-TPR等表征了催化剂的结构，并在温度为250 ℃、压力为3.0 MPa和合成气（

(CO) = 2:1）流量为75 mL/min的条件下评价了催化剂的催化合成气制低碳醇性能（以反应7 d后的平均值计）。结果表明，与Co/AC相比，引入助剂Ce、Mn均可提高催化剂表面Co物种的分散性及减小Co

物种的晶粒尺寸。其中，Mn-Co/AC的表面Co

物种含量（物质的量分数）为66.0%。在实验条件下，Ce-Co/AC的CO转化率为2.29%，总醇选择性为32.03%，

(低碳醇)/

(总醇)为68.06%；Mn-Co/AC表现出了更好的催化性能，其CO转化率为3.99%，总醇选择性为33.23%，

(低碳醇)/

(总醇)为79.36%。

Abstract

Producing low-carbon alcohols (C

alcohols) from syngas have received extensive attention due to its excellent economic property. The Co-based catalyst is one of the main catalysts for producing low-carbon alcohols from syngas

but the Co-based catalyst currently has the problem of low selectivity for low-carbon alcohols. Using the co-precipitation method

Ce and Mn modified Co/AC catalysts (Ce-Co/AC a

nd Mn-Co/AC with Co mass fraction of 15.0% and Ce or Mn mass fraction of 7.5%) were prepared

respectively. The structures of the catalysts were characterized by XRD

adsorption/desorption and H

-TPR

and the catalytic performances of catalysts for producing low-carbon alcohols from syngas (calculating by the average values after 7 d of reaction) under the conditions of temperature of 250 ℃

pressure of 3.0 MPa and syngas (

(CO) = 2:1) flow rate of 75 mL/min were evaluated. The results show that compared with Co/AC

the introduction of the additives Ce and Mn both can improve the dispersion of Co species on the catalyst surface and reduce the crystal size of Co

species. Among them

the content (mole fraction) of surface Co

species in Mn-Co/AC is 66.0%. Under the experimental conditions

the CO conversion rate of Ce-Co/AC is 2.29%

and the total alcohol selectivity is 32.03% and

(low-carbon alcohols)/

(total alcohols) is 68.06%. Mn-Co/AC exhibits better catalytic performance with CO conversion rate of 3.99%

total alcohol selectivity of 33.23% and

(low-carbon alcohols)/

(total alcohols) of 79.36%.

关键词

Keywords

references

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