【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/ C催化剂才能制备出合格的氢化松香产品更多还原

【Abstract】 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.更多还原