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OALib Journal期刊
ISSN: 2333-9721
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选择氧化物载体调变乙醇重整和1,3-丁二烯加氢反应双金属催化剂
DOI: 10.1016/S1872-2067(12)60715-3, PP. 2009-2017
Keywords: 铂镍双金属催化剂,载体影响,乙醇重整,1,3-丁二烯加氢,扩展X射线吸收精细结构光谱
Abstract:
？研究了不同载体负载的Pt-Ni双金属和单金属催化剂上乙醇重整和1,3-丁二烯加氢反应性能,以考察氧化物载体对双金属结构和催化活性的影响.所用的氧化物载体包括γ-Al2O3,SiO2,TiO2,CeO2以及高比表面积(HSA)和低比表面积(LSA)ZrO2.采用共浸渍法制备催化剂,用CO化学吸附、透射电镜和扩展X射线吸收精细结构光谱进行催化剂表征,采用傅里叶变换红外间歇反应器进行化学反应评价.对于乙醇重整反应,Pt-Ni双金属催化剂优于单金属催化剂,Pt-Ni双金属催化剂活性顺序为TiO2>SiO2>γ-Al2O3≈LSA-ZrO2>CeO2>HSA-ZrO2.对于1,3-丁二烯加氢反应,在SiO2,TiO2和HSA-ZrO2载体上双金属催化剂优于单金属催化剂,Pt-Ni双金属催化剂活性顺序为SiO2>CeO2>γ-Al2O3>LSA-ZrO2>HSA-ZrO2≈TiO2.
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