Journal of Porous Materials ( IF 2.5 ) Pub Date : 2023-03-17 , DOI: 10.1007/s10934-023-01445-z
Xuehao Li , Qichen wang , Chuanmin Ding , Yuanyuan Meng , Junwen Wang , Kan Zhang , Ping Liu
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In this paper, nitrogen-doped, boron-doped and boron and nitrogen co-doped activated carbon supported nickel–copper was used as catalyst for ethanol gas-phase carbonylation reaction. The yield of propionic acid and ethyl propionate was improved greatly by boron and nitrogen co-doping. BET, XRD, XPS, TEM, and CO-TPD were used to study the effects of nitrogen and boron doping on catalytic performance. Nitrogen doping and boron doping improve the dispersion of metal on the surface of activated carbon. Aiming at the problem of low stability of nickel-based catalyst, the regeneration method of the catalyst was explored. The results show that the activity of the catalyst can be recovered by H2 treatment at 400 ℃. According to the results of the catalyst regeneration experiment and the characterization of the catalyst before and after the reaction and regeneration, the cause for the deactivation of the catalyst were discussed. The results show that the formation of NiI2 is the main cause of catalyst deactivation.
中文翻译:
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硼氮共掺杂活性炭负载的镍铜催化剂用于乙醇的气相羰基化
本文采用氮掺杂、硼掺杂和硼氮共掺杂活性炭负载镍铜作为乙醇气相羰基化反应的催化剂。硼氮共掺杂大大提高了丙酸和丙酸乙酯的产率。BET、XRD、XPS、TEM 和 CO-TPD 用于研究氮和硼掺杂对催化性能的影响。氮掺杂和硼掺杂改善了金属在活性炭表面的分散。针对镍基催化剂稳定性低的问题,探索了催化剂的再生方法。结果表明,H 2可以恢复催化剂的活性400℃处理。根据催化剂再生实验结果和反应再生前后催化剂的表征,探讨了催化剂失活的原因。结果表明,NiI 2的形成是催化剂失活的主要原因。