首页|Engineering oxygen vacancies on Tb-doped ceria supported Pt catalyst for hydrogen production through steam reforming of long-chain hydrocarbon fuels

Engineering oxygen vacancies on Tb-doped ceria supported Pt catalyst for hydrogen production through steam reforming of long-chain hydrocarbon fuels

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Steam reforming of long-chain hydrocarbon fuels for hydrogen production has received great attention for thermal management of the hypersonic vehicle and fuel-cell application.In this work,Pt catalysts supported on CeO2 and Tb-doped CeO2 were prepared by a precipitation method.The physical structure and chemical properties of the as-prepared catalysts were characterized by powder X-ray diffraction,scanning electron microscopy,transmission electron microscopy,Raman spectroscopy,H2 temperature programmed reduction,and X-ray photoelectron spectroscopy.The results show that Tb-doped CeO2 supported Pt possesses abundant surface oxygen vacancies,good inhibition of ceria sintering,and strong metal-support interaction compared with CeO2 supported Pt.The catalytic performance of hydrogen production via steam reforming of long-chain hydrocarbon fuels(n-dodecane)was tested.Compared with 2Pt/CeO2,2Pt/Ce0.9Tb0.1O2,and 2Pt/Ce0.5Tb0.5O2,the 2Pt/Ce0.7Tb0.3O2 has higher activity and sta-bility for hydrogen production,on which the conversion of n-dodecane was maintained at about 53.2％after 600 min reaction under 700 ℃ at liquid space velocity of 9 ml·g-1·h-1.2Pt/CeO2 rapidly deacti-vated,the conversion of n-dodecane was reduced to only 41.6％after 600 min.

Steam reformingn-DodecaneHydrogen productionPt-based catalystOxygen vacancyCeO2

Zhourong Xiao、Changxuan Zhang、Peng Li、Desong Wang、Xiangwen Zhang、Li Wang、Jijun Zou、Guozhu Li

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State Key Laboratory of Metastable Materials Science and Technology(MMST),Hebei Key Laboratory of Applied Chemistry,College of Environmental and Chemical Engineering,Yanshan University,Qinhuangdao 066004,China

Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China

Key Research and Design Program of QinhuangdaoScience and Technology Project of Hebei Education DepartmentCultivation Project for Basic Research and Innovation of Yanshan UniversityProject for Research and Development of Metal Catalysts for Photothermal Decomposition of Waste Plastics to Prepare ValueaddSubsidy for Hebei Key Laboratory of Applied Chemistry after Operation Performance

202101A005QN20230942021LGQN028x202332222567616H

2024

10.1016/j.cjche.2023.12.008

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.68(4)
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