新型包覆碳化钨载体负载Pd催化剂的性能  

Performance of the Pd catalyst supported by active carbon coated tungsten carbide

作　　者：张艳鑫[1] 邬冰[1] 高颖[1] 

机构地区：[1]哈尔滨师范大学化学化工学院,黑龙江哈尔滨150025

出　　处：《化学工程师》2015年第1期10-13,共4页Chemical Engineer

基　　金：黑龙江省自然科学基金(B201002);哈尔滨市科技创新人才专项资金项目(2010RFXXG018);黑龙江省高校科技创新团队建设计划(No.2011TD010)

摘　　要：以Vulcan XC-72R活性碳作为碳源,采用高温热处理还原法,在活性碳表面原位还原钨酸铵,形成表面包覆钨的碳化物结构的载体。通过BET等当钨酸铵用量适宜时,形成的钨的碳化物的平均孔径较大,较大介孔所占比例较大,以其为载体制备的Pd催化剂Pd/WC-2其电荷传递阻抗和扩散阻抗都较小。催化剂Pd/WC-2对甲酸的氧化不但具有较高的活性,同时也具有很好的稳定性。The carbon support coated tungsten carbide from reducing acid amine on the carbon surface is prepared using Vulcan XC-72 activate carbon as carbon source. The preparation method is through high temperature reductionl When the amount of ammonium tungstate is suitable in preperation, the average pore size of tungsten carbide formed is larger and the Pd catalyst with its supported Pd/WC-2 was possess low charge transfer resistance and low diffusion resistance. The Pd/WC-2 catalyst is not only has high activity, but also has good stability for formic acid electrooxidation.

关 键 词：钯 碳化钨 甲酸 电催化氧化 

分 类 号：O646[理学—物理化学]