2021年 03期

Preparation of Acetaldehyde via Ethanol Dehydrogenantion over Supported Cobalt Carbide Catalysts


摘要(Abstract):

采用CO直接碳化法制备SiO_2、γ-Al_2O_3和介孔分子筛SBA-15负载的Co_2C催化剂;在常压、 400℃的条件下,使用固定床对催化剂进行乙醇脱氢制乙醛反应的评价;采用X射线衍射、 X射线光电子能谱、H_2程序升温还原、透射电子显微镜等手段对催化剂进行表征。结果表明:采用CO直接碳化法制备的负载型Co_2C催化剂均具有乙醇脱氢制乙醛的活性,Co_2C是反应的活性中心;与SiO_2和γ-Al_2O_3负载的Co_2C催化剂相比,SBA-15负载的Co_2C催化剂因具有更多的Co_2C活性位而活性较高。

关键词(KeyWords): 催化剂;介孔分子筛;碳化;乙醇脱氢;乙醛

基金项目(Foundation): 国家自然科学基金项目(21706138)

作者(Author): 于倩男,裴彦鹏,姜娜,牟宗刚,李平,李文娟,温秋慧

DOI: 10.13349/j.cnki.jdxbn.20210308.001

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