以六亚甲基亚胺(HMI)为水热合成模板制备H-MOR和Cu/H-MOR系列丝光沸石催化剂,并在二甲醚羰基化反应中对其进行评价。为了研究Cu的掺入量对丝光沸石反应性能的影响,利用XRD、SEM、氮气吸附/脱附、ICP-AES、NH₃-TPD和CO-TPD等对催化剂进行表征。结果表明,随着Cu的掺入,催化剂的酸量和酸强度明显增加,同时促进了催化剂对CO的吸附,进而提高了催化剂的反应性能。在反应温度为200℃、反应压力为1.0 MPa和反应空速为2 040 mL/(g·h)条件下的评价结果表明,当掺入Cu的质量分数达到2.36%时,催化剂的反应性能最优,二甲醚转化率为58%且乙酸甲酯(MA)选择性为95%。

H-MOR and Cu/H-MOR catalysts are prepared through hydrothermal method with hexamethyleneimine as template,and evaluated in dimethyl ether carbonylation reaction.In order to study the impact of Cu doping on the performance of the catalyst,the characterization technologies such as XRD,SEM,nitrogen adsorption/desorption,ICP-AES,NH₃-TPD and NH₃-TPD are employed to characterize the prepared catalysts.It is indicated that the addition of Cu enhances the acid amount and strength of the catalyst,while promotes the adsorption of CO by the catalyst,thereby improving its reaction performance.The evaluation under the conditions of 200℃,1.0 MPa,and 2 040 mL/(g·h) shows that as the doping amount of Cu increases to 2.36%,the performance of the catalyst reaches the optimal,over which the conversion of dimethyl ether is 58% and the selectivity of methyl acetate reaches 95%.

赵鹏(1995-),男,硕士,工程师,研究方向为C1化工、催化化学,通讯联系人,18082056096@163.com。