PtSn propane dehydrogenation catalyst supported by γ-Al_2O_3: insight into the supports and active species interaction
PtSn propane dehydrogenation catalyst supported by γ-Al_2O_3: insight into the supports and active species interaction
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DOI：
10.1007/s11051-023-05892-2
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发表时间：
2023-11
影响因子：
2.5
通讯作者：
Shijia Liu;Jianhao Jiao;Kai He;Yanfeng Bi;Yucai Qin;Lijuan Song
中科院分区：
文献类型：
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作者：
Shijia Liu;Jianhao Jiao;Kai He;Yanfeng Bi;Yucai Qin;Lijuan Song
采用水热法制备了3种γ- al2o3载体，采用序浸渍法制备了丙烷脱氢用PtSn/ al2o3催化剂。采用TEM、PXRD、H2-TPR等表征方法对催化剂进行了表征。研究了不同形态的PtSn/ al2o3催化剂对丙烷脱氢和结焦性能的影响。结果表明，三种形态的al2o3载体的暴露晶面不同，使得载体表面的Lewis酸含量和活性金属在载体上的相互作用不同，从而影响催化剂和焦化碳的催化性能。摘要γ- al2o3的不同形貌暴露出不同的晶面，改变了载体表面的Lewis酸含量，调节了活性金属与载体的相互作用，从而影响丙烷脱氢性能和催化剂结焦。
Threeγ-Al2O3supports were prepared by hydrothermal method, and PtSn/Al2O3catalysts were prepared by sequential impregnation for propane dehydrogenation. The catalyst was characterized by TEM, PXRD, H2-TPR, and other characterization methods. The effects of different morphologies of PtSn/Al2O3catalysts on the dehydrogenation performance and coking of propane were investigated. The results show that the exposed crystal planes of three morphologies of Al2O3support are different, which makes the Lewis acid content on the support surface and the interaction of active metals on the support different, thus affecting the catalytic performance of the catalyst and coking carbon.Graphical AbstractDifferent morphologies ofγ-Al2O3expose different crystal planes, change the Lewis acid content on the surface of the support, and regulate the interaction between active metals and support, thus affecting propane dehydrogenation performance and catalyst coking.