钯/竹炭催化剂催化湿地松松香歧化反应研究  

Study on Disproportionation Reaction of Slash Pine Rosin Catalyzed by Palladium/Bamboo-charcoal (Pd/BC)

作　　者：杨彦春[1] 曾韬[1] 

机构地区：[1]南京林业大学化学工程学院,江苏南京210037

出　　处：《生物质化学工程》2008年第6期1-4,共4页Biomass Chemical Engineering

基　　金：国家自然科学基金(30771686);国家林业局公益性行业科研专项资助(200704033)

摘　　要：研究钯/竹炭(Pb/BC)催化剂对湿地松松香的歧化反应,确定了最佳反应条件,催化剂用量为原料松香质量的0.4%,搅拌速率500 r/min,反应温度270℃,反应时间3 h,此时湿地松香歧化松香脱氢枞酸达到56%以上,枞酸降到2%左右,但枞酸指标仍未达到国家标准(枞酸含量≤0.5%)。在其他条件相同,催化剂用量为0.3%的反应条件下,采用Pd/BC催化剂也可以催化马尾松松香进行歧化反应,马尾松歧化松香中的枞酸含量为0.43%,可以达到国家标准。Pd/BC was used as catalyst for disproportionation of slash pine rosin. The optimal reaction condition was established. The amount of catalyst is 0.4 % of raw material by mass, stirring speed is 500 r/min,reaction temperature is 270 ℃ and the reaction time is 3 h. In these conditions, the content of dehydroabietic acid in slash pine disproportionated rosin is above 56 % and abietic acid is decreased to 2 %. But this doesn＇t meet the national standard （the content of abietic acid ≤0.5 % ）. Pd/BC also catalyzes disproportionation reaction of masson pine rosin in the same conditions above, except that the catalyst amount is 0.3 %. The content of abietic acid in masson pine disproportionated rosin is 0.43 %, which meets the national standard.

关 键 词：钯/竹炭催化剂 湿地松松香 歧化反应 

分 类 号：TQ351.471[化学工程]