石油化工2025，Vol.54Issue(8)：1079-1083,5.DOI:10.3969/j.issn.1000-8144.2025.08.003
异丁酸酐裂解制二甲基乙烯酮合成工艺及其二聚产物研究
Research on synthesis process of dimethylketene from isobutyric anhydride cracking and its dimerization
摘要
Abstract
This article conducted experimental research on the production of 2,2,4,4-tetramethy-lcyclobutane-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,1H NMR,13C 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.关键词
2,2,4,4-四甲基-1,3-环丁二醇/异丁酸酐裂解/二甲基乙烯酮/2,2,4,4-四甲基-1,3-环丁二酮Key words
2,2,4,4-tetramethylcyclobutane-1,3-diol/pyrolysis of isobutyric anhydride/dimethylketene/2,2,4,4-tetramethylcyclobutane-1,3-dione分类
化学化工引用本文复制引用
柳艳青,马磊,王贤山,杨金生,甄淏,靳海波..异丁酸酐裂解制二甲基乙烯酮合成工艺及其二聚产物研究[J].石油化工,2025,54(8):1079-1083,5.基金项目
中国中化备案科技项目(ZH000000001856). （ZH000000001856）
