Al_2(SO_4)_3催化玉米芯直接液化制备糠醛研究
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摘要
以玉米芯为原料,采用Al_2(SO_4)_3催化液化选择性制备糠醛,考察反应温度、催化剂添加量及水含量对玉米芯转化及糠醛产率的影响。结果表明,Al2(SO4)3催化剂对玉米芯液化及糠醛选择性制备具有明显的促进作用。研究获得玉米芯选择性制备糠醛的最佳反应条件为:反应温度150℃、催化剂添加量0. 45 g及水含量10%。最佳反应条件下玉米芯转化率为78. 5%,糠醛产率为84. 9%。玉米芯及其液化残渣的红外及热重分析表明,玉米芯中三大组分均得到了明显降解。
Take corncob as raw material,the effects of reaction temperature,catalyst addition and water content on the conversion of corncob and furfural yield were investigated. The results indicated that an effective reaction of corncob liquefaction and furfural selective preparing was conducted by catalytic of Al_2(SO_4)_3. The optimum reaction condition was reaction temperature 150 ℃,Al2( SO4)3 dosage 0. 45 g and water content 10%. The highest corncob conversion and furfural yield were 78. 5% and 84. 9%,respectively. The FTIR and TG analysis indicated that an obviously depolymerization of three main components was occurred.
Take corncob as raw material,the effects of reaction temperature,catalyst addition and water content on the conversion of corncob and furfural yield were investigated. The results indicated that an effective reaction of corncob liquefaction and furfural selective preparing was conducted by catalytic of Al_2(SO_4)_3. The optimum reaction condition was reaction temperature 150 ℃,Al2( SO4)3 dosage 0. 45 g and water content 10%. The highest corncob conversion and furfural yield were 78. 5% and 84. 9%,respectively. The FTIR and TG analysis indicated that an obviously depolymerization of three main components was occurred.
引文
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[19]李昌文,张丽华,纵伟,等.玉米芯的综合利用研究技术进展[J].食品研究与开发,2015,36(15):139-143.
[20] Lu Z,Fan L,Wu Z,et al. Efficient liquefaction of woody biomass in polyhydric alcohol with acidic ionic liquid as a green catalyst[J]. Biomass&Bioenergy,2015,81:154-161.
[21] Long J,Lou W,Wang L,et al.[C4H8SO3Hmim]HSO4as an efficient catalyst for direct liquefaction of bagasse lignin:Decomposition properties of the inner structural units[J]. Chemical Engineering Science,2015,122:24-33.
[2]卢怡,郑志锋,黄元波,等.半纤维素选择性催化制备糠醛及其衍生物的研究进展[J].林产化学与工业,2018,38(3):1-16.
[3]刘桂锋,舒逢遥,何超,等.固体酸和两相反应体系对糠醛制备的影响[J].新能源进展,2018,6(1):229-238.
[4] Zhang H,Wang Y,Shao S,et al. An experimental and kinetic modeling study including coke formation for catalytic pyrolysis of furfural[J]. Combustion and Flame,2016,173:258-265.
[5] Yan K,Wu G,Lafleur T,et al. Production,properties and catalytic hydrogenation of furfural to fuel additives and value-added chemicals[J]. Renewable and Sustainable Energy Reviews,2014,38(3):663-676.
[6] Li G,Li N,Wang Z,et al. Synthesis of high-quality diesel with furfural and 2-methylfuran from hemicellulose[J].Chem Sus Chem,2012(5):1958-1966.
[7] Mariscal R,Maireles-torres P,Ojeda M,et al. Furfural:a renewable and versatile platform molecule for the synthesis of chemicals and fuels[J]. Energy&Environmental Science,2016,9(4):1144-1189.
[8] Li X,Jia P,Wang T. Furfural:a promising platform compound for sustainable production of C4and C5chemicals[J]. ACS Catalysis,2016,6(11):7621-7640.
[9] Dutta S,De S,Saha B,et al. Advances in conversion of hemicellulosic biomass to furfural and upgrading to biofuels[J]. Catalysis Science&Technology,2012,2(10):2025-2036.
[10] Xing R,Qi W,Huber G. Production of furfural and carboxylic acids from waste aqueous hemicellulose solutions from the pulp and paper and cellulosic ethanol industries[J]. Energy&Environmental Science,2011,4(6):2193-2205.
[11] Raman J,Gnansounou E. Furfural production from empty fruit bunch a biorefinery approach[J]. Industrial Crops and Products,2015,69:371-377.
[12] Snchez C,Serrano L,Andres M,et al. Furfural production from corn cobs autohydrolysis liquors by microwave technology[J]. Industrial Crops and Products,2013,42:513-519.
[13] Deng A,Ren J,Li H,et al. Corncob lignocellulose for the production of furfural by hydrothermal pretreatment and heterogeneous catalytic process[J]. RSC Advances,2015,5(74):60264-60272.
[14] Li H,Wang X,Liu C,et al. An efficient pretreatment for the selectively hydrothermal conversion of corncob into furfural:the combined mixed bail milling and ultrasonic pretreatments[J]. Industrial Crops and Products,2016,94:721-728.
[15] Y Jun,X Junming,J Jianchun,et al. Catalytic conversion of bamboo meal to high-yield furfural with solid acid catalyst Fe PO4·2H2O[J]. Chemistry Select,2017(2):11250-11254.
[16] Y Li,Y Xiaopei,X Siquan,et al. One-pot synthesis of5-hydroxymethylfurfural from carbohydrates using an inexpensive Fe PO4catalyst[J]. RSC Advances,2015(5):19900-19906.
[17] H Yaobing,Y Tao,Pan Hui,et al. Facile and high-yield synthesis of methyl levulinate from cellulose[J]. Green Chemistry,2018,20:1323-1334.
[18] L Haizhou,Z Yuan,W Shurong,et al. Conversion of C5carbohydrates into furfural catalyzed by SO3H-functionalized ionic liquid in renewableγ-valerolactone[J]. Energy Fuels,2017,31:3929-3934.
[19]李昌文,张丽华,纵伟,等.玉米芯的综合利用研究技术进展[J].食品研究与开发,2015,36(15):139-143.
[20] Lu Z,Fan L,Wu Z,et al. Efficient liquefaction of woody biomass in polyhydric alcohol with acidic ionic liquid as a green catalyst[J]. Biomass&Bioenergy,2015,81:154-161.
[21] Long J,Lou W,Wang L,et al.[C4H8SO3Hmim]HSO4as an efficient catalyst for direct liquefaction of bagasse lignin:Decomposition properties of the inner structural units[J]. Chemical Engineering Science,2015,122:24-33.