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Vapor-Phase Synthesis of 3-Methylindole from Glycerol and Aniline over Cu/SiO2-Al2O3 Modified with CeO2
Author(s): 
Pages: 181-185
Year: Issue:  2
Journal: Petrochemical Technology

Keyword:  3-methylindoleglycerolanilinecerium oxideCu-based catalyst;
Abstract: 采用浸渍法制备Cu/SiO2-Al2O3及添加CeO2助剂的催化剂,通过H2-TPR,XRD,NH3-TPD,TG-DTA等技术对催化剂进行表征.实验结果表明,对于丙三醇与苯胺气相合成3-甲基吲哚的反应,向Cu/SiO2-Al2O3催化剂中加入适量的CeO2助剂不仅能大幅提高催化剂的选择性,还能改善其稳定性;在CeO2负载量为0.35 mmol/g的Cu-CeO2/SiO2-A12O3催化剂上,反应运行第5h时,3-甲基吲哚收率达到46%; CeO2助剂能提高Cu粒子在载体表面的分散度,有效抑制反应过程中Cu粒子的烧结;CeO2助剂还能增加催化剂的弱酸中心数,降低中强酸的酸性,减少催化剂表面的积碳,但不改变积碳的结构.
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