壳聚糖负载钯络合物催化氢化苯乙酮的动力学

Kinetic Study on Hydrogenation of Acetophenone Catalyzed by Chitosan-palladium

以二氧化硅负载壳聚糖-钯络合物(SiO2-CS-Pd)为催化剂,在常温且氢气压力恒定为1.0×105Pa下,以乙醇为溶剂催化苯乙酮加氢生成1-苯基乙醇,用气相色谱仪跟踪反应进程.结果表明,在实验条件下,反应对苯乙酮为一级,反应速率随催化剂的增多而加快.提出了可能的反应机理.

Chitosan-palladium complex （SiO2-CS-Pd） is used as catalyst to catalyze the hydrogenation of acetophenone at normal temperature and 1.0 × 10^5 Pa H2. GC is used to test the reaction course. The reaction is found to be pseudo-first order with respect to acetophenone. The reaction rate increases with the increase of the catalyst, A probable reaction mechanism is proposed based on the experimental results.