摘要
以异丁酸酐(IBAN)为原料通过裂解制二甲基乙烯酮(DMK),DMK经二聚、提纯,成功合成了2,2,4,4-四甲基-1,3-环丁二酮(TMCB)。采用GC-MS,FTIR,^(1)H NMR,^(13)C NMR等方法表征了TMCB试样的分子结构,考察了反应温度、反应压力以及气液流量比等因素对IBAN转化率及DMK选择性的影响,获得了最佳反应条件。实验结果表明,IBAN最佳裂解条件为反应温度475℃、反应压力0.35 MPa、气液体积流量比为763,且该条件下DMK收率可达39%。
This article conducted experimental research on the production of 2,2,4,4-tetramethylcyclobutane-1,3-dione(TMCB)from isobutyric anhydride(IBAN)by cracking to produce dimethylketene(DMK)and the dimerization of DMK.The molecular structure of purified TMCB was analyzed by GC-MS,FTIR,^(1)H NMR,^(13)C NMR,confirming that the obtained product was TMCB.The reaction conditions of the heating reaction and absorption dimerization processes were also investigated.The optimal production process for DMK production was discovered:reaction temperature of 475℃,reaction pressure of 0.35 MPa,and gas/liquid volume ratio of 763.Then,the yield of DMK would be 39%under this optimal condition.
作者
柳艳青
马磊
王贤山
杨金生
甄淏
靳海波
LIU Yanqing;MA Lei;WANG Xianshan;YANG Jinsheng;ZHEN Hao;JIN Haibo(Technology Research and Development Center,Zhenghe Group Co.,Ltd.,Dongying 257342,China;Beijing Key Laboratory of Fuel Cleanliness and Efficient Catalytic Emission Reduction Technology,School of New Materials and Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102627,China)
出处
《石油化工》
北大核心
2025年第8期1079-1083,共5页
Petrochemical Technology
基金
中国中化备案科技项目(ZH000000001856)。
