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Study on performance of Cu-modified Pt@AM catalysts in low-temperature water-gas shift reaction
- Low-Carbon Chemistry and Chemical Engineering Pages: 1-9(2025)
- 作者机构：
1.中国科学院 山西煤炭化学研究所 煤炭高效低碳利用全国重点实验室，山西 太原 030001
2.中国科学院大学，北京 100049
3.中国煤炭科工集团有限公司 北京天地融创科技股份有限公司，北京 100013
4.中国煤炭科工集团有限公司 煤炭科学技术研究院有限公司，北京 100013
5.大连理工大学 化工学院 精细化工国家重点实验室，辽宁 大连 116024
- 作者简介：
- 基金信息：
DOI：10.12434/j.issn.2097-2547.20250069
CLC： TQ426Received：24 February 2025，
Revised：05 March 2025，
Published Online：16 June 2025，
- 稿件说明：
移动端阅览
韩祝玲,纪任山,周忠波等.Cu改性Pt@AM催化剂在低温水煤气变换反应中的性能研究[J].低碳化学与化工,
HAN Zhuling,JI Renshan,ZHOU Zhongbo,et al.Study on performance of Cu-modified Pt@AM catalysts in low-temperature water-gas shift reaction[J].Low-Carbon Chemistry and Chemical Engineering,
韩祝玲,纪任山,周忠波等.Cu改性Pt@AM催化剂在低温水煤气变换反应中的性能研究[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20250069.
HAN Zhuling,JI Renshan,ZHOU Zhongbo,et al.Study on performance of Cu-modified Pt@AM catalysts in low-temperature water-gas shift reaction[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20250069.
摘要
低温水煤气变换反应（WGSR）是制氢工业的关键环节。针对传统催化剂低温活性差和贵金属催化剂贵金属用量高的问题，采用简单混合法将Pt盐与Cu盐混合后加入钼酸铵中超声、焙烧，制备了Cu改性Pt@AM催化剂用于低温催化WGSR。研究结果表明，在Pt@AM中加入少量Cu不仅有利于
α
-MoC结构的形成，还能增强金属间相互作用，调节活性位点分布，从而提升催化剂催化活性。其中，0.05%Pt-0.5Cu%@AM在温度200 ℃、原料气
V
(CO):
V
(H
2
O):
V
(N
2
) = 2:5:18和空速40000 mL/(g·h)的反应条件下，反应1 h后表现出高达73.5%的CO转化率和38.6%的H
2
产率，说明Cu改性显著提高了贵金属Pt基催化剂催化活性。同时，揭示了Cu改性提高催化剂催化活性的构效关系，为设计低温高活性WGSR催化剂提供了理论依据。
Abstract
Low-temperature water-gas shift reaction (WGSR) is a key bridge in hydrogen production industry. In response to the poor low-temperature activity of traditional catalysts and the high metal content of noble mental catalysts
a simple mixing method was used to mix Pt salt and Cu salt
and then add them to ammonium molybdate for ultrasonic and calcination to prepare Cu-modified Pt@AM catalysts in low-temperature WGSR. The results show that adding a small amount of Cu to Pt@AM not only facilitates the formation of
α
-MoC
but also enhances the interaction between metals
adjust the distribution of active sites
and thus improves the catalytic activity of catalysts. Among them
0.05%Pt-0.5Cu%@AM catalyst shows a high CO conversion rate of up to 73.5% and a H
2
yield of 38.6% after 1 h reaction under the reaction conditions of temperature of 200 ℃
feed gas
V
(CO):
V
(H
2
O):
V
(N
2
) = 2:5:18 and space velocity of 40000 mL/(g·h)
indicating that Cu modification significantly improves the catalytic activity of noble metal Pt based catalysts. At the same time
the structure-activity relationship of Cu modification to improve catalytic activity of catalysts was revealed
providing a theoretical basis for designing low-temperature WGSR catalyst with high activity.
关键词
Keywords
references
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