用于LPCE的有序床催化剂催化活性研究  

Catalytic Activity of Ordered-Bed Catalyst for LPCE

作　　者：钟正坤[1] 傅中华[1] 王昌斌[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《核化学与放射化学》2015年第6期425-428,共4页Journal of Nuclear and Radiochemistry

摘　　要：采用气-液逆流方式研究了Pt/C/PTFE有序床疏水催化剂对H_2(g)/HDO(l)体系中同位素交换的催化性能。结果表明:Pt/C/PTFE有序床催化剂不仅具有较高的催化活性和良好的疏水性,而且能够达到很高的气体流速;实验所用的两种Pt/C/PTFE的体积传质系数(K_(ya))均达1.12m^3(STP)/(s·m^3)(50mol/(m^3·s))以上,且用水浸泡35d后其催化活性无明显变化;在气液摩尔比为1∶1的条件下,气体空塔线速率达到1.0m/s时,两种填装的有序床Pt/C/PTFE均未发生液泛。The counter-flow method was used to study the catalytic performance of the Pt/C/ PTFE ordered-bed catalysts for the isotopic exchange reactions between hydrogen gas and HDO water. The results show that the catalytic activity of Pt/C/PTFE ordered-bed catalysts is very high at high gas flow rate and the Pt/C/PTFE appeared good hydrophobic perform- ance. The Kya values for two kinds of the Pt/C/PTFE ordered-bed catalysts tested are more than 1.12ma（STP）/（s· m3） （50mol/（m3 · s））. Flooding mode was not observed when gas flow rate is equivalent to linear velocities of 1.0 m/s and the mole gas to liquid rate ratio is 1.

关 键 词：氢同位素交换 Pt/C/PTFE催化剂 有序床 催化活性 

分 类 号：O643.36[理学—物理化学] TQ131.11[理学—化学]