林产化学与工业2017，Vol.37Issue(3)：45-52,8.DOI:10.3969/j.issn.0253-2417.2017.03.006
磁性固体酸S2O82-/ZrO2-Al2O3-Fe3O4的制备及催化液化生物质的研究
Preparation of Magnetic Solid Acid Catalyst S2O82-/ZrO2-Al2O3-Fe3O4and Its Application for Catalytic Liquefaction of Switchgrass
摘要
Abstract
Magnetic solid acid catalyst S2O82-/ZrO2-Al2O3-Fe3O4 was prepared by coprecipitation and impregnation methods and used to catalyze the liquefaction of Panicum virgatum L.(switchgrass)in ethanol.The physicochemical properties and structure of the catalyst were characterized by X-ray diffraction (XRD),Brunauer-Emmet-Teller method (BET),temperature programmed desorption of NH3 (NH3-TPD),Fourier transform infrared spectroscopy (FT-IR) and vibrating sample magnetometer (VSM).The influences of Al/Zr molar ratio and calcination temperature on the catalytic performance were investigated.Moreover,the effects of reaction conditions such as reaction temperature,reaction time,as well as mass of catalyst on liquefaction of switchgrass were studied.The experimental results indicated that the catalyst with a Al/Zr molar ratio of 1/1 calcined at 650 ℃ showed the best activity.An optimum bio-fuel yield of 56％ was obtained under the reaction temperature of 260 ℃,catalyst amount of 4％and 2.5 h of reaction time.The chemical composition of the liquefaction production was identified by GC-MS,in which esters,alcohols and hydrocarbons were the dominate.After 3 times of reuse,the recovery rate of the catalyst still reached 87.5％,and the bio-fuel yield decreased by 12％.关键词
磁性固体酸/催化液化/酸性/柳枝稷Key words
magnetic solid acid/catalytic liquefaction/acidity/switchgrass分类
化学化工引用本文复制引用
武海棠,郑冀鲁,梁名伟,张军华..磁性固体酸S2O82-/ZrO2-Al2O3-Fe3O4的制备及催化液化生物质的研究[J].林产化学与工业,2017,37(3):45-52,8.基金项目
西北农林科技大学林学院优秀青年教师人才培育计划项目(无编号) （无编号）
陕西省自然科学基础研究计划项目(2015JQ3067) （2015JQ3067）
中央高校基本科研业务费资助项目(2452015337) （2452015337）
