Abstract
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.
基金项目
Key Research and Design Program of Qinhuangdao(202101A005)
Science and Technology Project of Hebei Education Department(QN2023094)
Cultivation Project for Basic Research and Innovation of Yanshan University(2021LGQN028)
Project for Research and Development of Metal Catalysts for Photothermal Decomposition of Waste Plastics to Prepare Valueadd(x2023322)
Subsidy for Hebei Key Laboratory of Applied Chemistry after Operation Performance(22567616H)
NETL
NSTL
万方数据