H_2-H_2O气液氢同位素交换反应中Pt-SDB憎水催化剂的制备

Preparation of Pt-SDB Hydrophobic Catalyst Used in H_2-H_2O Isotope Exchange Reaction

制备了以贵金属铂为活性成分 ,聚苯乙烯 -二乙烯基苯为载体的 Pt- SDB憎水催化剂 ;在滴流床中 ,通过 H2 - H2 O气液逆流氢同位素交换实验 ,观察制备工艺对催化剂活性的影响。结果表明 :还原温度约为 2 0 0℃ ,还原时间为 8～ 10 h,制得的铂含量为 3%的催化剂 ,具有较高的活性和稳定性 ;铂含量为 1%～ 2 % ,单位铂活性较高 。

The preparation of Pt SDB hydrophobic catalyst is studied, in which platinum as active metal and polystyrene divinylbenzene(SDB) as the carrier. Hydrogen isotope exchange reaction is carried out with Pt SDB catalyst in counter current in the trickle bed. The effect of preparing condition on the activity of catalyst is discussed. The results show that the excellent catalyst is obtained by reduced at the temperature of 200 ℃ over 8 hours. Hydrophobic catalyst is high activity and stability as the amount of platinum content is 3%, the platinum can reach the economic use with the content of (1～2)%.