英文论文
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文献类型
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Journal article (JA)
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题名
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A highly-efficient Rh-based La2Ce2O7 catalyst for steam reforming of diesel: Effect of catalyst structure on performance
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作者
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Li, Yan; Chang, Haohao; Wang, Jia; Jiang, Kun; Liu, Yun-Quan; Pang, Xinchang
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作者单位
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[Li, Yan; Chang, Haohao; Wang, Jia] Henan Univ Sci & Technol, Sch Chem & Chem Engn, Luoyang 471023, Henan, Peoples R China. [Li, Yan; Jiang, Kun; Liu, Yun-Quan] Xiamen Univ, Coll Energy, Xiamen 361102, Fujian, Peoples R China. [Pang, Xinchang] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Henan, Peoples R China.
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通讯作者地址
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Xiamen Univ, Coll Energy, Xiamen 361102, Fujian, Peoples R China.; Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Henan, Peoples R China.
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Email
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yq_liu@xmu.edu.cn; pangxinchang@zzu.edu.cn
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ResearchID
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ORCID
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期刊名称
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International Journal of Hydrogen Energy
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出版社
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PERGAMON-ELSEVIER SCIENCE LTD
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ISSN
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0360-3199
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出版信息
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2025-08-18, 159 ():.
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JCR
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影响因子
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ISBN
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基金
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The 705th Research Institute of CSIC [XDHT2019623A]; Xiamen Yishuo Hydrogen Energy Co. Ltd [20223160A0108, 2012Z02302]; Fujian Province Innovation and Entrepreneurship Talents Funds [2012Z02302]
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会议名称
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会议地点
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会议开始日期
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会议结束日期
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关键词
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Binary alloys; Catalyst activity; Catalyst supports; Catalytic reforming; Cerium compounds; Coking; Coking properties; Lanthanum compounds; Oxygen vacancies; Rhodium compounds; Sulfur; Temperature
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摘要
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The development of high-performance catalysts with good coking resistance and sulfur tolerance for diesel reforming has been a big challenge. Generally, the strong metal-support interaction (SMSI) plays a pivotal role in determining the catalytic performance. This study investigated comparatively a supported-type (Rh/La2Ce2O7) and an embedded-type (La2Ce1.89Rh0.11O7) catalyst, and revealed that lattice-embedding strategy for active metals significantly enhances SMSI and improves catalytic activity. The activity tests demonstrated that the embedded-type catalyst La2Ce1.89Rh0.11O7 exhibited a better low-temperature activity, achieving a nearly-complete diesel conversion (similar to 100 %) at 650 degrees C, whereas the supported-type catalyst only reached similar to 85 % conversion at 750 degrees C. Stability tests in 650-850 degrees C further confirmed the high stability of La2Ce1.89Rh0.11O7, with a H-2 production rate of 70.4 % at 850 degrees C. Characterization of the catalysts confirmed that the embedded type, in which Rh3+ was implemented with partially substituted Ce4+, triggered a strong SMSI effect, inducing electronic reconstruction within the support, i.e. promoting Ce4+ to Ce3+, thus creating a high concentration of oxygen vacancies. Additionally, the highly dispersed Rh nanoclusters (with average size 2.5 nm, dispersity 44.0 %) were formed. All these structural features had collectively resulted in a catalyst of exceptional anti-coking and sulfur-tolerance properties. In summary, this study provided a good example for the oriented regulation of SMSI through lattice-embedding, which offered a useful guidance for the development of high-performance catalysts for on-board hydrogen production from diesel.
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一级学科
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Chemistry, Physical; Electrochemistry; Energy & Fuels
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WOS入藏号
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WOS:001541359600006
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EI收录号
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20253018825315
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DOI
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10.1016/j.ijhydene.2025.150591
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ESI
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收录于
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SCIE, EI
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