【摘要】 Pd/C负载型催化剂 ,由活性组分Pd原子和载体活性炭组成 ,用于糠醛液相脱羰制呋喃。因为多相催化反应发生在催化剂表面上 ,所以催化剂的表面积 ,特别是反应可利用表面积决定催化剂的活性。根据BET容量法 ,测定不同浸渍条件时Pd/C催化剂的BET表面积 ,以气相色谱定量呋喃产率为标准 ,确定Pd/C活性。实验数据表明 ,浸渍液的pH值和焙烧温度都是Pd/C表面积的影响因素 ,因此选择合适的pH值和焙烧温度是使Pd/C具有较高活性的重要条件。更多还原

【Abstract】 The carrier type catalyst Pd/C, composed of active component Pd and active carbon as the support,is used in the production of furan by the method of decarbonylation of liquid phase furfural. Because the heterogeneous catalysis occurs on the surface of the catalyst,the activity of the catalyst will depend on its surface area. According to the BET volumetric method,the BET surface area of the Pd/C catalyst prepared under different soaking conditions was measured. Then the activity of the catalyst is determined according to the yield of furan obtained by gaseous quantitative chromatograpy. The results show that the pH value of soaking reagent and the calcination temperature are all factors influencing the surface area of Pd/C.更多还原