采用共沉淀、高温焙烧及KF掺杂Zn-Al类水滑石的方法制备了KF/Zn-Al固体碱催化剂.通过正交试验考察了制备条件对KF/Zn-Al固体碱催化活性的影响,得到的优化条件为:陈化温度353 K、陈化时间16 h、焙烧温度823 K、焙烧时间6h及m(KF)/m(Zn-Al)=1.以优化条件下制备的KF/Zn-Al固体碱为催化剂,在n(醇)/n(油)=9、m(催化剂)/m(油)=0.04、反应温度338 K、反应时间0.5h的条件下,菜籽油转化率可达97.75%.采用TG-DTG、BET、XRD、SEM技术及Hammett指示剂法对催化剂及其前驱体进行了表征.对催化剂结构及表面性质与其活性之间的关系进行了讨论.
参考文献
[1] | Jiang W,Lu H F,Qi T,et al.Preparation,Application,and Optimization of Zn/Al Complex Oxides for Biodiesel Production Under Sub-critical Conditions[J].Biotechnol Adv,2010,28:620-627. |
[2] | QIAN Weiwei,HAN Pingfang,LV Xiaoping.KF/CaO as Solid Base Catalyst for Transesterification to Biodiesel by Ultrasound[J].J Fuel Chem Technol,2010,38(1):52-56(in Chinese).钱卫卫,韩萍芳,吕效平.超声作用下KF/CaO催化酯交换反应制备生物柴油[J].燃料化学学报,2010,38(1):52-56. |
[3] | Liu H,Su L Y,Shao Y Z,et al.Biodiesl Production Catalyzed by Cinder Supported CaO/KF Particle Catalyst[J].Fuel,2012,97:651-657. |
[4] | Wen L B,Wang Y,Lu D L,et al.Preparation of KF/CaO Nanocatalyst and Its Application in Biodiesel Production from Chinese Tallow Seed Oil[J].Fuel,2010,89:2267-2271. |
[5] | Hu S Y,Guan Y P,Wang Y,et al.Nano-magnetic Catalyst KF/CaO-Fe3O4 for Biodiesel Production[J].Appl Energy,2011,88:2685-2690. |
[6] | Wang Y,Hu S Y,Guan Y P,et al.Preparation of Mesoporous Nanosized KF/CaO-MgO Catalyst and Its Application for Biodiesel Production by Transesterification[J].Catal Lett,2009,131:574-578. |
[7] | Gao L J,Xu B,Xiao G M,et al.Transesterification of Palm Oil with Methanol to Biodiesel over a KF/hydrotalcite Solid Catalyst[J].Energy Fuels,2008,22:3531-3535. |
[8] | WU Gongde,WANG Xiaoli,WEI Wei,et al.Preparation of Biodiesl by Transesterification over Fluorine Modified Mg-Al Mixed Oxides[J].Acta Petrol Sin(Pet Process Sect),2011,27(1):54-61 (in Chinese).吴功德,王晓丽,魏伟,等.氟改性的镁-铝复合氧化物催化酯交换反应制备生物柴油[J].石油学报(石油加工),2011,27(1):54-61. |
[9] | Xu C L,Liu Q.Catalytic Performance and Mechanism of KF-loaded Catalysts for Biodiesel[J].Catal Sci Technol,2011,1:1072-1082. |
[10] | Boz Nezahat,Degirmenbasi Nebahat,Kalyon Dilhan M.Conversion of Biomass to Fuel:Transesterification of Vegetable Oil to Biodiesel Using KF Loaded Nano-γ-Al2O3 as Catalyst[J].Appl Catal B,2009,89:590-596. |
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