文献类型：期刊文献

英文题名：Production of Low-Freezing-Point Highly Branched Alkanes through Michael Addition

作者：Jing, Yaxuan[1,2];Xia, Qineng[1,2];Liu, Xiaohui[1,2];Wang, Yanqin[1,2]

机构：[1]East China Univ Sci Technol, Shanghai Key Lab Funct Mat Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：10

期号：24

起止页码：4817

外文期刊名：CHEMSUSCHEM

收录：;EI(收录号：20175204568826);WOS:【SCI-EXPANDED(收录号:WOS:000418660700003)】；

基金：This work was supported financially by the NSFC of China (No. 91545103, 21603072 and 21403065), the Science and Technology Commission of Shanghai Municipality (10dz2220500), China Postdoctoral Science Foundation (2016M590328), and the Fundamental Research Funds for the Central Universities (222201714010, 222201718003).

语种：英文

外文关键词：biomass; branched alkanes; furfural; low freezing point; michael addition

摘要：A new approach for the production of low-freezing-point, high-quality fuels from lignocellulose-derived molecules was developed with Michael addition as the key step. Among the investigated catalysts, CoCl(2)6H(2)O was found most active for the Michael addition of 2,4-pentanedione with FA (single aldol adduct of furfural and acetone, 4-(2-furanyl)-3-butene-2-one). Over CoCl(2)6H(2)O, a high carbon yield of C-13 oxygenates (about 75%) can be achieved under mild conditions (353K, 20h). After hydrodeoxygenation, low-freezing-point (<223K) branched alkanes with 13-carbons within jet fuel ranges were obtained over a Pd/NbOPO4 catalyst. Furthermore, C-18,C-23 fuel precursors could be easily synthesized through Michael addition of 2,4-pentanedione with DFA (double-condensation product of furfural and acetone) under mild conditions and the molar ratio of C-18/C-23 is dependent on the reaction conditions of Michael addition. After hydrodeoxygenation, high density (0.8415gmL(-1)) and low-freezing-point (<223K) branched alkanes with 18, 23carbons within lubricant range were also obtained over a Pd/NbOPO4 catalyst. These highly branched alkanes can be directly used as transportation fuels or additives. This work opens a new strategy for the synthesis of highly branched alkanes with low freezing point from renewable biomass.