氧化石墨烯固体酸催化湿藻油制生物柴油  

BIODIESEL PRODUCTION FROM WET MICROALGAE USING GRAPHENE OXIDE AS SOLID ACID CATALYST

作　　者：仇亿 程军[1] 张泽 黄睿[1] 刘建忠[1] 周俊虎[1] Qiu Yi;Cheng Jun;Zhang Ze;Huang Rui;Liu Jianzhong;Zhou Junhu(State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学能源清洁利用国家重点实验室,杭州310027

出　　处：《太阳能学报》2021年第4期40-45,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51476141);国家重点研发计划(2016YFE0106700)。

摘　　要：主要研究氧化石墨烯(GO)作固体酸催化转化湿藻油脂制生物柴油。气相色谱质谱联用(GC-MS)、傅里叶红外光谱(FTIR)、扫描电镜(SEM)的结果表明:GO表面带有大量羟基(—OH)及羧基(—COOH),羟基能将亲水的湿藻细胞均匀吸附在GO表面,而羧基及GO带有的磺酸基(—SO3H)作酸性中心与氯仿萃取出的湿藻油脂接触并高效催化酯交换反应。在1 g湿藻中加入质量分数为5%的GO作为固体酸催化剂,再加入4 mL甲醇和3 mL氯仿,微波加热控温在90℃反应40 min后,生物柴油转化率最高达到95.1%。Graphene oxide is synthesized and used as solid acid catalyst to convert lipids in wet microalgae into biodiesel.Gas chromatography-mass spectrometry,Fourier transform infrared spectroscopy,Scanning electron microscope analysis reveal that GO contains abundant OH groups,COOH groups and SO3 H groups.Wet microalgae cells are adsorbed on hydrophilic GO surfaces covered with many OH groups.Lipids extracted by chloroform from microalgal cells are transformed into fatty acids methyl esters(FAMEs)through transesterification catalyzed by the acid centers(SO3 H groups)in GO catalysts.The highest lipid conversion efficiency into FAMEs is 95.1%in microwave-assisted transesterification reactions of 5%GO catalyst in 1 g wet microalgae,4 mL methanol and 3 mL chloroform at 90°C for 40 min.

关 键 词：油脂 生物柴油 氧化石墨烯 湿藻 固体酸催化剂 

分 类 号：TK6[动力工程及工程热物理—生物能]