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Effect of support morphology on performance of Pt/CeO2 catalysts for methanol steam reforming to produce hydrogen
- Low-Carbon Chemistry and Chemical Engineering Vol. 51, Issue 3, Pages: 85-96(2026)
- 作者机构：
1.中国科学院 大连化学物理研究所，辽宁 大连 116023
2.中国科学院大学，北京 101408
3.西北大学 化工学院，陕西 西安 710069
- 作者简介：
- 基金信息：
DOI：10.12434/j.issn.2097-2547.20250126
CLC： TQ116.2Received：20 March 2025，
Revised：2025-04-11，
Published：25 March 2026
- 稿件说明：
移动端阅览
邵明宇,黄传德,宋哲等.载体形貌对Pt/CeO2催化剂甲醇蒸汽重整制氢性能的影响[J].低碳化学与化工,2026,51(3):85-96.
SHAO Mingyu,HUANG Chuande,SONG Zhe,et al.Effect of support morphology on performance of Pt/CeO2 catalysts for methanol steam reforming to produce hydrogen[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(3):85-96.
邵明宇,黄传德,宋哲等.载体形貌对Pt/CeO2催化剂甲醇蒸汽重整制氢性能的影响[J].低碳化学与化工,2026,51(3):85-96. DOI： 10.12434/j.issn.2097-2547.20250126.
SHAO Mingyu,HUANG Chuande,SONG Zhe,et al.Effect of support morphology on performance of Pt/CeO2 catalysts for methanol steam reforming to produce hydrogen[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(3):85-96. DOI： 10.12434/j.issn.2097-2547.20250126.
摘要
氢能是实现“碳中和”目标的关键性清洁能源之一，因此开发高效低碳制氢工艺至关重要。甲醇蒸汽重整（MSR）是一种具有潜力的制氢技术，但实现贵金属基催化剂的高产氢效率和高CO
2
选择性仍存在巨大挑战。采用水热法合成了纳米棒CeO
2
（CeO
2
-R）和纳米立方体CeO
2
（CeO
2
-C）两种形貌的载体，并构建了负载型Pt/CeO
2
催化剂（Pt/CeO
2
-R、Pt/CeO
2
-C）催化MSR反应。结合HRTEM、XPS和Raman等表征手段，探究了CeO
2
形貌对催化剂催化性能的影响机制。结果表明，优先暴露(111)晶面的CeO
2
-R表面氧空位较多，产生了更多的Pt
δ
+
-O
v
-Ce
3+
界面位点（本征活性中心）。在反应温度为325 ℃、甲醇水混合物（
n
(H
2
O):
n
(CH
3
OH) = 3:1）进料流量为0.02 mL/min以及空速为34800 mL/(g·h)下，Pt/CeO
2
-R的产氢速率达到490.35 mmol/(g·h)，CO
2
选择性为92.9%。相同条件下，Pt/CeO
2
-C上CO
2
选择性仅有63.0%。本研究可为新型高效MSR催化剂设计提供借鉴。
Abstract
Hydrogen energy is one of the key clean energy sources for achieving the “carbon neutrality” goal
so developing efficient and low-carbon hydrogen production processes is of vital importance. Methanol steam reforming (MSR) emerges as a promising technique for hydrogen production
yet challenges persist in achieving both high hydrogen yield and CO
2
selectivity over noble metal-based catalysts. Herein
CeO
2
supports with different morphologies of nanorods (CeO
2
-R) and nanocubes (CeO
2
-C) were prepared by hydrothermal method for constructing Pt/CeO
2
catalysts (Pt/CeO
2
-R
Pt/CeO
2
-C). Combined with comprehensive characterization techniques
including HRTEM
XPS
and Raman spectroscopy
the morphology-dependent catalytic behavior in MSR reactions was studied. The results show that CeO
2
-R with exposure of dominant (111) facet exhibits more surface oxygen vacancies
generating abundant Pt
δ
+
-O
v
-Ce
3+
interfacial active sites (intrinsic active site). Under the conditions of 325 ℃
a methanol-water mixture feed flow rate of 0.02 mL/min (
n
(H
2
O):
n
(CH
3
OH) = 3:1)
and space velocity of 34800 mL/(g·h)
Pt/CeO
2
-R achieves a hydrogen production rate of 490.35 mmol/(g·h) with CO
2
selectivity of 92.9%. Under the same conditions
the CO
2
selectivity is only 63.0% by Pt/CeO
2
-C. This study can provide valuable insights for the design of new high-efficiency MSR catalysts.
关键词
Keywords
references
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