松香低压催化加氢反应的研究  

Study on Catalytic Hydrogenation of Rosin at Low Pressure

作　　者：陈小鹏[1] 王琳琳[1] 阳承利[1] 马建[1] 祝远姣[1] 韦小杰[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《化学世界》2003年第6期309-311,308,共4页Chemical World

基　　金：国家自然科学基金资助项目 ( N o.2 976 6 0 0 2 );广西自然科学基金资助项目 ( N o.0 2 2 90 0 5)

摘　　要：采用 FYX-2 G型高压搅拌釜 ,在温度 1 60°C、压力 1 .0 MPa条件下 ,测定了松香催化加氢转化率与 Pd/ C催化剂含水量的关系 ,可见加氢反应速度随催化剂含水量的减少而增加。考察了搅拌器类型、搅拌转速对高压釜持气量及枞酸转化率的影响 ,认识到松香催化加氢是外扩散控制的反应 ,当搅拌转速达 60 0 r/ min时 ,基本上能消除外扩散的影响。比较了 Raney-镍与 Pd/ C催化剂对松香催化加氢的活性 ,实验表明在低氢压 1 .0 MPa下 ,只有 Pd/The relation between the conversion of rosin and water content in Pd/C catalyst was determined at 160°C and 1.0 MPa in a high pressure agitated autoclave (type FYX 2G). The result showed that the rate of hydrogenation increased when the water content in Pd/C catalyst was decreased. The effects of stirrer type and stirring speed on the gas hold up of the autoclave and the conversion of abietic acid were investigated. It was found that the catalytic hydrogenation of rosin is a reaction under the control of external diffusion. The effect of external diffusion could be eliminated when the stirring speed was up to 600 r/min. The activity of Raney Ni catalyst for catalytic hydrogenation of rosin was compared with that of Pd/C, showing that qualified hydrogenated rosin product was prepared only on Pd/C catalyst at a pressure of 1.0 MPa.

关 键 词：松香 催化加氢 氢化松手 PD/C催化剂 

分 类 号：TQ351.471[化学工程]