磷钨酸/多壁碳纳米管催化合成乙酸正丁酯  

Synthesis n-butyl acetate using catalytic properties of 12-tungstophosphoric acid/multiwalled carbon nanotubes composite

作　　者：张延琪[1] 沈玲[1] 李永红[1] 侯长平[1] 葛秀涛[1] 

机构地区：[1]滁州学院化生系,安徽滁州239012

出　　处：《化学试剂》2006年第4期247-248,253,共3页Chemical Reagents

摘　　要：利用多壁碳纳米管(MWCNTs)为载体,用浸渍法制备了负载磷钨酸(H3PW12O40,简写为HPW)的复合材料磷钨酸/多壁碳纳米管(HPW/MWCNTs)。磷钨酸/多壁碳纳米管具有很高的催化活性,在磷钨酸负载量为30%,醇酸物质的量比为1.4∶1,催化剂用量为反应物总质量的1.3%,反应温度为117℃,反应时间为3h的条件下,酯化率可达96.08%。12-tungstophosphoric acid/multiwalled carbon nanotubes composite was fabricated by dipping acid-MWCNTs in the mixing solution of 12-tungstophosphoric acid. It exhibited higher catalytic activity to the reaction of acetic acid with n-butyl alcohol. The esterification yield is up to 96.08% under the optimal conditions, namely, 30% mass ratio of 12-tungstophosphoric acid to multiwalled carbon nanotubos, 1.4：1 the molar ratio of n-butyl alcohol to acetic acid, 1.3% mass ratio of the catalyst to total reactants, 117℃ for 3 h.

关 键 词：碳纳米管 磷钨酸 酯化反应 乙酸丁酯 

分 类 号：O623.624[理学—有机化学]