摘要
以固体废弃物花生壳为原料,制备一系列固体碱复合催化剂,并应用于酯交换反应实验。催化剂的表征通过扫描电子显微镜(SEM)、X射线能谱(EDS)、X-射线衍射(XRD)、N2吸脱附(BET)、傅里叶变换红外光谱(FTIR)及Hammett指示法进行检测。同时对催化剂的制备条件、催化反应条件及重复利用进行分析。实验结果表明:催化剂30K/PB-600具有优良的催化剂活性,在最佳反应条件下(6%的催化剂用量,7∶1的醇油物质量比和150 min的反应时间)生物柴油的产率可达96.3%;经过8次循环利用后产率仍大于82%,催化剂的失活是由于少量K+的流失。
The peanut shell is utilized as the raw material for the preparation of cost-effective and high-efficiency solid base catalysts for the transesterification reaction.The chemical and structural properties of catalysts are examined by scanning electron microscope(SEM),energy dispersive spectrometer(EDS),X-ray diffraction(XRD),N2 adsorption/desorption,Fourier-transform infrared spectroscopy(FTIR)and the Hammett indicator method.In addition,the effects of catalyst preparation conditions,reaction conditions and the catalyst reusability are studied.The best performance is observed for the resulting 30K/PB-600 catalyst,and over biodiesel yield of 96.3% is achieved at catalyst amount of 6%,methanol/oil molar ratio of 7∶1 and reaction time of 150 min.After 8 repeated use,only a slight deactivation is found(above 82% of yield obtained)due to K+ions leached into reaction media.
作者
严军华
王舒笑
袁浩然
陈勇
单锐
Yan Junhua;Wang Shuxiao;Yuan Haoran;Chen Yong;Shan Rui(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;CAS Key Laboratory of Renewable Energy,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第4期257-263,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51776211,51608507)
广东省基金(2015A030310327)
广州市产学研协同创新重大专项(2016201604030077)。
