有序孔木质素碳基催化剂催化生物质油模型化合物加氢脱氧  

Efficient Hydrodeoxygenation of Biomass Oil over Lignin-based Carbon Supported Metal Catalysts with Ordered Pore Structure

作　　者：邓益强 巫思桦 庞苑苑 肖业鹏 杨冲 程丽华 DENG Yiqiang;WU Sihua;PANG Yuanyuan;XIAO Yepeng;YANG Chong;CHENG Lihua(School of Chemical Engineering,Guangdong University of Petrochemical Technology,Maoming 525000,China)

机构地区：[1]广东石油化工学院化学工程学院,广东茂名525000

出　　处：《广东石油化工学院学报》2023年第4期32-37,共6页Journal of Guangdong University of Petrochemical Technology

基　　金：广东省科技创新战略专项(2022DZXHT021);茂名市科技专项(2022S049);广东省本科高校教学质量与教学改革工程建设项目(701/71013307052);广东石油化工学院2022年大学生创新创业训练计划项目(73322048)。

摘　　要：以木质素为原料,通过浸渍—热处理方法得到了系列不同Ni、Co含量的木质素碳基催化剂,通过X射线衍射(XRD)、N_(2)物理吸脱附、SEM以及H_(2)-TPR等技术对其结构和物化性能进行了表征,并考察了制备材料在以苯酚和正十氢萘混合物为生物质油模型化合物中的加氢脱氧催化性能。结果表明,制备的系列材料结构相似,孔径分布有序,双金属前驱体限制了金属颗粒的生长,形成了均匀分散的小颗粒,具有更多的活性位点,其中Ni_(0.25)-Co_(0.25)/C金属还原温度最低,还原比例最高,具有更好的还原能力。在300℃,4 MPa,氢气10 mL/min、氢油体积比1000,催化剂0.1 g,反应时间2 h的反应条件下,苯酚转化率可达72.3%。Lignin-based carbon supported Ni and Co metal catalysts are prepared by the impregnation/thermal treatment method,and characterized by X-ray diffraction(XRD),N_(2)physical adsorption and desorption,scanning electron microscope(SEM),and H_(2)Temperature-programmed reduction(H_(2)-TPR).Then the catalytic performance of these materials is also investigated in the hydrodeoxygenation of the model oil compound with phenol and n-decahydronaphthalene mixture.The results show that these materials have similar structure,orderly pore size distribution,and bimetallic precursors limited the growth of metal particles,forming uniformly dispersed small particles with more active sites,among which Ni_(0.25)-Co_(0.25)/C has the lowest metal reduction temperature,the highest reduction ratio,and a better reducing capacity.Under the conditions of 300℃,4 Mpa,hydrogen 10 mL/min,hydrogen-oil volume ratio 1000,catalyst 0.1g and reaction time 2h,the conversion of phenol can reach up to 72.3%.

关 键 词：木质素 生物质油 碳基催化剂 加氢脱氧 

分 类 号：TQ032.41[化学工程]