低碳化学与化工2026，Vol.51Issue(3)：85-96,12.DOI:10.12434/j.issn.2097-2547.20250126
载体形貌对Pt/CeO2催化剂甲醇蒸汽重整制氢性能的影响
Effect of support morphology on performance of Pt/CeO2 catalysts for methanol steam reforming to produce hydrogen
摘要
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 CO2 selectivity over noble metal-based catalysts.Herein,CeO2 supports with different morphologies of nanorods(CeO2-R)and nanocubes(CeO2-C)were prepared by hydrothermal method for constructing Pt/CeO2 catalysts(Pt/CeO2-R,Pt/CeO2-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 CeO2-R with exposure of dominant(111)facet exhibits more surface oxygen vacancies,generating abundant Ptδ+-Ov-Ce3+interfacial active sites(intrinsic active site).Under the conditions of 325℃,a methanol-water mixture feed flow rate of 0.02 mL/min(n(H2O):n(CH3OH)=3:1),and space velocity of 34800 mL/(g·h),Pt/CeO2-R achieves a hydrogen production rate of 490.35 mmol/(g·h)with CO2 selectivity of 92.9%.Under the same conditions,the CO2 selectivity is only 63.0%by Pt/CeO2-C.This study can provide valuable insights for the design of new high-efficiency MSR catalysts.关键词
氢能/甲醇蒸汽重整/CeO2形貌/氧空位/串联反应Key words
hydrogen energy/methanol steam reforming/CeO2 morphology/oxygen vacancies/tandem catalytic process分类
化学化工引用本文复制引用
邵明宇,黄传德,宋哲,朱燕燕,李林,王晓东..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):85-96,12.基金项目
国家自然科学基金(21706254,22178337,22378331) （21706254,22178337,22378331）
国家自然科学基金委"单原子催化"基础科学中心(22388102) （22388102）
中国科学院青年创新促进会资助项目(2023189) （2023189）
中国科学院基金(JCPYJJ-22039,KGFZD-145-23-45). （JCPYJJ-22039,KGFZD-145-23-45）
