【摘要】 目前生物转氨体系能够高效转化糠醛为糠胺，但该体系的糠胺分离纯化尚属空白。本文立足吸附分离，于多壁碳纳米管(MWCNTs)表面引入羧基，利用离子交换作用实现糠胺的富集。首先，分别以丙烯酸(AA)、甲基丙烯酸(MAA)、三氟甲基丙烯酸(TFMAA)、衣康酸(IA)、4-乙烯基苯甲酸为单体于多壁碳纳米管表面进行原位沉淀聚合反应，获得最优单体丙烯酸修饰材料P1，其对糠胺吸附容量为63.10mg/g，并对反应温度、引发剂用量优化，提升糠胺吸附容量至73.11mg/g，在此基础上利用硝硫混酸进一步引入羧基，获得MWCNTs-AA-COOH对糠胺的吸附容量达到了83.17mg/g。通过糠胺吸附条件优化得到最佳pH为10.26，吸附过程为吸热过程，吸附在2h即可达到平衡。本文首次利用丙烯酸接枝与酸化多壁碳纳米管实现对糠胺的高效吸附分离，为糠胺的吸附分离研究奠定了基础。更多还原

【Abstract】 The current biological transamination system can efficiently convert furfural to furfuryl amine, but the separation of furfurylamine from this system remain to be explored. In this paper, the enrichment of furfurylamine was achieved by the introduction of carboxyl groups on the surface of multi-walled carbon nanotubes(MWCNTs) using ion exchange. Firstly, acrylic acid(AA), methacrylic acid(MAA), trifluoromethacrylic acid(TFMAA), itaconic acid(IA) and 4-vinylbenzoic acid were used as monomers in the in situ precipitation polymerization reaction on the surface of MWCNTs to obtain the optimal monomeric acrylic acid modified material P1 with the adsorption capacity of 63.10mg/g for furfurylamine, and the reaction temperature and initiator dosage were optimized to increase the adsorption capacity of furfurylamine to 73.10mg/g. The adsorption capacity of MWCNTs-AA-COOH for furfurylamine reached 83.17mg/g. The optimum pH of 10.26 was obtained by optimizing the adsorption conditions for furfurylamine, and the adsorption process was a heat-absorbing process, and the adsorption reached equilibrium in 2h. In this paper, acrylic acid grafted and acidified multi walled carbon nanotubes were used for the first time to achieve efficient adsorption and separation of furfural amine, which laid a foundation for the adsorption and separation of furfural amine.更多还原