Dehydrogenation of propane over In2O3-Al2O3 mixed oxide in the presence of carbon dioxide
Dehydrogenation of propane over In2O3-Al2O3 mixed oxide in the presence of carbon dioxide
复制标题
In2O3-Al2O3 混合氧化物在二氧化碳存在下丙烷脱氢
DOI：
10.1016/j.jcat.2010.03.007
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发表时间：
2010-05-25
影响因子：
7.3
通讯作者：
Zhuang, Ji-Hua
中科院分区：
文献类型：
--
作者：
Chen, Miao;Xu, Jie;Zhuang, Ji-Hua
在乙醇共沉淀法制备的二元In2O3-Al2O3混合氧化物上，进行了丙烷（PDH）在CO2存在下脱氢制丙烯的研究。研究了不同组分对催化性能的协同效应。通过x射线衍射和x射线光电子能谱的表征表明，这两种成分的结合可以显著改变In2O3相的表面性能和体分散，从而提高in - al - o复合材料的还原性。程序升温还原数据与In2O3-Al2O3的PDH活性之间的相关性表明，反应过程中表面金属铟的产生对脱氢性能至关重要。根据设定温度的CO2与H-2反应的结果，认为CO2对丙烯收率的促进作用是由于CO2与水煤气倒转反应的耦合促进了简单脱氢。(C) 2010爱思唯尔公司版权所有。
Dehydrogenation of propane (PDH) to propylene in the presence of CO2 was performed over binary In2O3-Al2O3 mixed oxides prepared by alcoholic coprecipitation. Synergistic effect of different composition on the catalytic performance has been observed. Characterization by X-ray diffraction and X-ray photoelectron spectroscopy revealed that the combination of the two components can result in significant modification in the surface properties and bulk dispersion of the In2O3 phase, which in turn leads to a higher reducibility of the In-Al-O composite. A correlation between the temperature-programmed reduction data and the PDH activity for In2O3-Al2O3 revealed that the creation of surface metallic indium species during the reaction is crucial for the dehydrogenation performance. The promoting effect of CO2 on the yield of propylene has been attributed to a facilitation of simple dehydrogenation by its coupling with the reverse water gas shift reaction based on the results from temperature-programmed reaction of CO2 with H-2. (C) 2010 Elsevier Inc. All rights reserved.