类石墨氮化碳负载钒用于环己烷氧化制KA油  

Graphite-like carbon nitride loaded vanadium for cyclohexane oxidation to produce KA oil

作　　者：韩成枭 于毅 杨幸川[1] 方鑫 邢一村 杨龙飞 徐丽[1] 刘国际[1] HAN Chengxiao;YU Yi;YANG Xingchuan;FANG Xin;XING Yicun;YANG Longfei;XU Li;LIU Guoji(College of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,Henan Province,China;Xuchang Cigarette Factory,China Tobacco Henan Industry Co.,Ltd.,Xuchang 461000,Henan Province,China)

机构地区：[1]郑州大学化工学院,河南郑州450001 [2]河南中烟工业有限责任公司许昌卷烟厂,河南许昌461000

出　　处：《化学工程》2023年第11期25-29,共5页Chemical Engineering(China)

摘　　要：通过控制偏钒酸铵与尿素混合物的焙烧温度,合成一种新型类石墨氮化碳负载钒催化剂0.7V-g-CN-350,该催化剂在环己烷选择性氧化中表现出优异的催化性能。对催化剂进行热重、XRD、SEM、TEM、FT-IR和XPS表征,并对催化剂的结构进行分析。结果表明:在0.7V-g-CN-350中存在氰尿酸和三聚氰胺的混合物;在所制备的催化剂中,0.7V-g-CN-350中的钒与g-CN-350载体的相互作用最强;更高比例的石墨氮以及V^(5+)是0.7V-g-CN-350具有更好催化性能的原因。通过单因素实验,优化工艺条件,在反应温度为72℃、反应时间为6 h的条件下,环己烷转化率为12.98%,KA油(环己酮和环己醇)选择性为70.08%。A novel graphitic carbon nitride supported vanadium catalyst 0.7V-g-CN-350 was synthesized by controlling the calcined temperature of ammonium metadadate and urea mixture.The catalyst shows excellent catalytic performance in the selective oxidation of cyclohexane.The catalyst was characterized by TG,XRD,SEM,TEM,FT-IR and XPS,and the structure of the catalyst was analyzed.The results show that the mixture of cyanuric acid and melamine exists in 0.7V-g-CN-350.Among the prepared catalysts,vanadium in 0.7V-g-CN-350 has the strongest interaction with the support of g-CN-350.The higher proportion of graphite-nitrogen and V^(5+)are the reasons for the better catalytic performance of 0.7V-g-CN-350.The single factor experiment was carried out to optimize the process conditions.Under the conditions of reaction temperature 72℃ and reaction time 6 h,the conversion rate of cyclohexane is 12.98% and the selectivity of KA oil ccyclohexanone and cyclohexanol is 70.08%.

关 键 词：环己烷 氧化 KA油 g-CN 钒 

分 类 号：TQ426[化学工程]