氮掺杂碳壳包覆CoNi合金催化剂的制备及其催化甘油还原胺化的研究  

Preparation of Nitrogen-Doped Carbon Shell-Coated CoNi Alloy Catalyst and Its Catalytic Amination of Glycerol Reduction

作　　者：王嘉怡 董小瑨 谭华 WANG Jiayi;DONG Xiaojin;TAN Hua(School of Chemistry,Guangdong University of Petrochemical Technology,Maoming 525000,China)

机构地区：[1]广东石油化工学院化学学院,广东茂名525000

出　　处：《广东石油化工学院学报》2025年第1期1-4,11,共5页Journal of Guangdong University of Petrochemical Technology

基　　金：广东省基础与应用基础研究基金项目(2021A1515010181)。

摘　　要：哌嗪是一种重要的医药中间体,常用于药物合成。本文通过热解CoNi-MOF-74制备了一种氮掺杂碳壳包覆的CoNi合金催化剂,用于甘油还原胺化合成哌嗪。TEM图像显示,CoNi合金被氮掺杂碳壳包覆,隔绝了外界环境,提升了催化剂的稳定性。氮气吸脱附曲线表明,CoNi@NC是一种具有大比表面积的介孔材料,为催化反应提供了更多的活性位点,并提高了反应传质速率。催化性能评估显示,CoNi@NC在160℃下表现出优异的催化性能,甘油的转化率达到95%,哌嗪的选择性为60.1%。该研究为生物柴油副产物甘油的高值化利用提供了一条可持续的新途径。Piperazine is an important pharmaceutical intermediate commonly used in drug synthesis.In this study,a nitrogen-doped carbon-coated CoNi alloy was prepared by pyrolysis of CoNi-MOF-74 as a catalyst for the synthesis of piperazine.TEM images showed that the CoNi alloy was coated with a layered nitrogen-doped carbon shell,which isolated it from the external environment and increased the structural stability of the nanoparticles.Nitrogen adsorption and desorption curves showed that CoNi@NC was a mesoporous material with large specific surface area,which provided more active sites for the catalytic reaction and improved the reaction mass transfer rate.Evaluation of the catalytic performance showed that CoNi@NC exhibited excellent catalytic performance at 160℃with 95%conversion of glycerol and 60.1%selectivity of piperazine.This study provides a sustainable way for the high-value utilization of glycerol,a byproduct of biodiesel.

关 键 词：CoNi@NC 甘油 还原胺化 哌嗪 碳包覆 

分 类 号：O64.32[理学—物理化学]