载体形状和粒径对Pd/Al2O3蒽醌加氢性能的影响  

Effect of carrier shape and particle size on the performance of Pd/Al2O3 catalyst for anthraquinone hydrogenation

作　　者：魏建伟 李明杰 谢继阳 张孟旭 唐春 戴云生 Wei Jianwei;Li Mingjie;Xie Jiyang;Zhang Mengxu;Tang Chun;Dai Yunsheng(State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co.,Ltd.,Kunming 650106,Yunnan,China;Sino-Platinum Industrial Catalyst(Yunnan)Co.,Ltd.,Kunming 650106,Yunnan,China)

机构地区：[1]贵研铂业股份有限公司,稀贵金属综合利用新技术国家重点实验室,云南昆明650106 [2]贵研工业催化剂(云南)有限公司,云南昆明650106

出　　处：《工业催化》2019年第12期20-23,共4页Industrial Catalysis

基　　金：云南稀贵金属材料基因工程(一期)(2018ZE017)

摘　　要：研究不同形状和颗粒大小的载体对Pd/Al2O3加氢性能的影响,结果表明,载体形状和粒径不影响其比表面积、孔容、孔径和活性组分在表面的粒径分布。齿球形和三叶草形催化剂比球形催化剂有更大的外表面积和更小的内扩散阻滞,从而表现出更好的催化性能。小尺寸催化剂表现出较高的加氢性能和较低的选择性,是因为有较大的外接触表面积和较小的床层空隙率。催化剂粒径为3.0 mm×3.1 mm时,催化剂氢化效率达8.40 g·L^-1,选择性97.8%。The effect of carrier shape and particle size on the performance of Pd/Al2O3 catalyst for anthraquinone hydrogenation was studied.The results showed that carrier shape and particle size did not affect its specific surface,pore volume and BJH average pore diameter,and the dispersions of surface active components.The catalysts with spherical teeth and clover shape had larger external surface and smaller internal diffusion retardation than spherical catalysts,thus possessing better catalytic performance.The catalyst with smaller particle size showed higher hydrogenation performance and lower selectivity due to its larger external contact surface area and smaller bed voidage.When the catalyst particle size was 3.0 mm×3.1 mm,the hydrogenation efficiency and selectivity were 8.4 g·L^-1 and 97.8%,respectively.

关 键 词：催化剂工程 载体形状 粒径 钯催化剂 蒽醌 

分 类 号：TQ426.65[化学工程] O643.36[理学—物理化学]