含氟芳香族硝基化合物加氢用钯催化剂的研究  

Study on Pd-catalyst used for hydrogenation of fluorine-containing aromatic nitro-compounds

作　　者：袁加程[1] 卢卫平[1] 周壮[2] 

机构地区：[1]江苏食品职业技术学院,江苏淮安223003 [2]江苏安邦电化有限公司,江苏淮安223002

出　　处：《化工进展》2008年第2期241-244,共4页Chemical Industry and Engineering Progress

摘　　要：介绍了以浸渍法制备Pd-Fe/SiO2催化剂,研究其载体、金属组分、还原剂、焙烧温度和时间等因素对催化剂催化性能的影响。确定了最优工艺条件:w(Pd)=5%,w(Fe)=0.2%,硼氢化钾作还原剂,焙烧温度500℃,焙烧时间4h。重复使用试验、优化验证试验、与其它催化剂如RaneyNi、Pt/C和Pd/C等对比试验结果表明,Pd-Fe/SiO2催化剂用于含氟芳香族硝基化合物的常压催化加氢反应,收率大于97.5%,纯度达到98.0%以上,选择性好,催化剂可重复使用10次。The present situation of synthesis of aramides by catalytic hydrogenation was reviewed. The preparation of Pd-Fe/SiO2 catalyst by the dipping process is introduced. Factors affecting catalytic properties, such as carrier, components, reductant, baking temperature, and time, were studied, and optimal conditions were obtained as： w（Pd）=5%, w（Fe）=0.2%; potassium borohydride as reductant; Pd-Fe/SiO2 was roasted for 4 h at 500℃. Tests for reusing the catalyst, verifying optimal conditions, and comparing with other catalysts such as Raney Ni, Pt/C, and Pd/C were made. The results showed that Pd-Fe/SiO2 catalyst had high selectivity, the yield of the reaction was more than 97.5%, the purity of product was more than 98.0%, and the catalyst can be reused 10 times.

关 键 词：Pd-Fe/SiO2催化剂 含氟芳香硝基族化合物 加氢反应 催化性能 

分 类 号：TQ032.42[化学工程]