介孔氮化碳负载钒催化氧化四氢糠醇制备γ-丁内酯  

Preparation ofγ-butyrolactone by catalytic oxidation of tetrahydrofurfuryl alcohol with mesoporous carbon nitride supported by vanadium

作　　者：谢恩[1] XIE En(Jiangsu Yangnong Chemical Group Co.,Ltd.,Yangzhou Jiangsu 225000,China)

机构地区：[1]江苏扬农化工集团有限公司,江苏扬州225000

出　　处：《石油化工应用》2024年第2期103-107,共5页Petrochemical Industry Application

摘　　要：羰基是有机化学中重要的含氧官能团,许多有机化工原料含有羰基官能团(包括醛、酮、酸等)。C-C键和C-H键选择氧化断裂反应是生成羰基官能团的重要途径之一。本文以分子氧为氧化剂,以四氢糠醇为底物选择氧化制备γ-丁内酯(GBL),开发了催化氧化制备羰基化合物的新体系。探讨了反应温度、反应压力、反应时间对催化活性的影响及催化剂循环使用的稳定性;在V/MCN催化剂作用下,四氢糠醇的转化率和GBL的选择性分别达到84.6%和92.8%;循环使用20次,催化剂活性未见明显降低。测试结果表明催化剂活性中心是分散的氧化钒物种,介孔氮化碳(MCN)材料作为一种碱性载体可以有效地抑制GBL的深度氧化。Carbonyl groups are important oxygen-containing functional groups in organic chemistry,and many organic chemical raw materials contain carbonyl functional groups(including aldehydes,ketones,acids,etc.).The selective oxidative cleavage reaction of C-C and C-H bonds is one of the important pathways for generating carbonyl functional groups.In this paper,molecular oxygen was used as oxidant,and tetrahydrofurfuryl alcohol was used as substrate for selective oxidation to prepareγ-butyrolactone(GBL),a new system for catalytic oxidation of butyrolactone to prepare carbonyl compounds has been developed.Explored the effects of reaction temperature,reaction pressure,and reaction time on catalytic activity and the cyclic stability of catalyst use.Under the action of V/MCN catalyst,the conversion rate of tetrahydrofurfuryl alcohol and the selectivity of GBL reached 84.6%and 92.8%,respectively.After 20 cycles of use,there was no significant decrease in catalyst activity.The test results indicate that the active center of the catalyst is a dispersed vanadium oxide species,and MCN material as an alkaline carrier can effectively inhibit the deep oxidation of GBL.

关 键 词：介孔氮化碳 钒 氧化反应 

分 类 号：O643[理学—物理化学]