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

doi:10.1016/j.cjche.2023.12.008

Chinese Journal of Chemical Engineering ›› 2024, Vol. 68 ›› Issue (4): 181-192.DOI: 10.1016/j.cjche.2023.12.008

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

Zhourong Xiao¹, Changxuan Zhang¹, Peng Li¹, Desong Wang¹, Xiangwen Zhang², Li Wang², Jijun Zou², Guozhu Li²

1. 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;
2. Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2023-08-11 Revised:2023-11-04 Online:2024-06-28 Published:2024-04-28
Contact: Zhourong Xiao,E-mail address:xiaozhourong1234@163.com;Guozhu Li,E-mail address:gzli@tju.edu.cn
Supported by:
This work was supported by the Key Research and Design Program of Qinhuangdao (202101A005), the Science and Technology Project of Hebei Education Department (QN2023094), the Cultivation Project for Basic Research and Innovation of Yanshan University (2021LGQN028), the Project for Research and Development of Metal Catalysts for Photo-thermal Decomposition of Waste Plastics to Prepare Value-added Chemicals (x2023322), and the Subsidy for Hebei Key Laboratory of Applied Chemistry after Operation Performance (22567616H).

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

Zhourong Xiao¹, Changxuan Zhang¹, Peng Li¹, Desong Wang¹, Xiangwen Zhang², Li Wang², Jijun Zou², Guozhu Li²

1. 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;
2. Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

通讯作者: Zhourong Xiao,E-mail address:xiaozhourong1234@163.com;Guozhu Li,E-mail address:gzli@tju.edu.cn
基金资助:
This work was supported by the Key Research and Design Program of Qinhuangdao (202101A005), the Science and Technology Project of Hebei Education Department (QN2023094), the Cultivation Project for Basic Research and Innovation of Yanshan University (2021LGQN028), the Project for Research and Development of Metal Catalysts for Photo-thermal Decomposition of Waste Plastics to Prepare Value-added Chemicals (x2023322), and the Subsidy for Hebei Key Laboratory of Applied Chemistry after Operation Performance (22567616H).

Abstract

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/Ce_0.9Tb_0.1O₂, and 2Pt/Ce_0.5Tb_0.5O₂, the 2Pt/Ce_0.7Tb_0.3O₂ has higher activity and stability 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 deactivated, the conversion of n-dodecane was reduced to only 41.6% after 600 min.

Key words: Steam reforming, n-Dodecane, Hydrogen production, Pt-based catalyst, Oxygen vacancy, CeO₂

摘要： 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/Ce_0.9Tb_0.1O₂, and 2Pt/Ce_0.5Tb_0.5O₂, the 2Pt/Ce_0.7Tb_0.3O₂ has higher activity and stability 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 deactivated, the conversion of n-dodecane was reduced to only 41.6% after 600 min.

关键词: Steam reforming, n-Dodecane, Hydrogen production, Pt-based catalyst, Oxygen vacancy, CeO₂

Zhourong Xiao, Changxuan Zhang, Peng Li, Desong Wang, Xiangwen Zhang, Li Wang, Jijun Zou, Guozhu Li. Engineering oxygen vacancies on Tb-doped ceria supported Pt catalyst for hydrogen production through steam reforming of long-chain hydrocarbon fuels[J]. Chinese Journal of Chemical Engineering, 2024, 68(4): 181-192.

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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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