松香歧化用钯炭催化剂的制备  

Preparation of Pd/C Catalyst Used for Disproportionation of Rosin

作　　者：张金龙[1,2] 芮果[3,2] 葛圣才 王鹏翔 张佩祥 

机构地区：[1]南京化工职业技术学院化学工程系,江苏南京210048 [2]南京石油化工股份有限公司,江苏南京210047 [3]清华大学核能与新能源技术研究院,北京100084

出　　处：《林产化学与工业》2010年第1期63-66,共4页Chemistry and Industry of Forest Products

摘　　要：用浸渍-还原法制备了一系列Pd／C催化剂，并应用于马尾松松香歧化反应。研究了活性炭粒径大小、载体预处理、还原条件等因素对Pd／C催化剂活性的影响。结果表明：用10％H2O2和1％强氧化物G的复合氧化剂对椰壳活性炭（粒径150～250μm）进行预处理，制得的Pd／C催化剂，可以使钯利用率达到96．4％，去氢枞酸高达68．4％。通过X射线光电子能谱（XSP）测定Pd／C中钯化合价的分布。甲醛过量1倍时，有44．4％Pd^2＋被还原成金属钯，且有24．9％的Pd^2＋生成。通过优化条件所制备的Pd／C催化剂活性明显高于其它厂家同类催化剂活性，并已应用于工业化生产。A series of Pd/C catalysts were prepared by impregnation-reduction method, and used for the disproportionation of Masson＇s pine rosin. Factors influencing Pd/C catalytic activity such as particle size, carrier pretreatment and reduction condition were studied. Results showed that the Pd/C catalyst prepard from activated carbon（AC） treated with complex oxidants（ 10 % H2O2 and 1% oxidant G ） can increase the utilization rate of palladium up to 96.4 % and dehydroabietic acid up to 68.4 %. Through X-ray photoelectron spectroscopy （ XPS）, the distribution of valency of Pd in Pd/C were investigated. When HCHO amount exceeded one fold, about 44.4 % Pd2~ was reduced to metallic Pd with the formation of 24.9 % Pd4~ found in Pd/C catalyst. The activity of catalyst prepared under the optimized experiment conditions：obviously exceeds counterparts of other companies. Furthermore, this catalyst has been produced industrially.

关 键 词：钯炭催化剂 歧化松香 活性炭 预处理 

分 类 号：TQ351.471[化学工程]