本文關(guān)鍵詞： 鈦納米管 固體酸催化劑 磺酸功能化 乙酰丙酸正丁酯 酯化 催化與分離提純技術(shù)　出處：《精細(xì)化工》2017年08期 　論文類型：期刊論文

【摘要】：以水熱法合成的二氧化鈦納米管為載體,將其與3-巰丙基三甲氧基硅烷、雙氧水反應(yīng),制備了磺酸功能化鈦納米管催化劑(TNTs-SO_3H),采用XRD、FTIR、TEM、TG、UV-Vis及Hammett指示劑法對催化劑的結(jié)構(gòu)和性能進(jìn)行了表征與測試。以催化合成乙酰丙酸正丁酯為探針反應(yīng),考察了TNTs-SO_3H的催化性能。結(jié)果表明:當(dāng)n(乙酰丙酸)∶n(正丁醇)=1∶5、TNTs-SO_3H用量為乙酰丙酸質(zhì)量的10%、反應(yīng)溫度120℃、反應(yīng)時(shí)間4 h時(shí),乙酰丙酸正丁酯的收率可達(dá)86.5%,TNTs-SO_3H重復(fù)使用7次后,乙酰丙酸正丁酯收率仍達(dá)81.2%。
[Abstract]:Titanium dioxide nanotubes synthesized by hydrothermal method were used as carriers to react with 3-mercapto trimethoxysilane and hydrogen peroxide. The sulfonic acid functionalized titanium nanotube catalyst (TNTs-SO3HX) was prepared. The structure and performance of the catalyst were characterized and tested by using Hammett indicator and FTIR FTIR TGG- TGX UV-Vis. The catalytic synthesis of n-butyl levulinate was used as a probe reaction. The catalytic properties of TNTs-SO_3H were investigated. The results showed that the yield of n-butyl levulinate could reach 86.5% TNTs-SO3H for 7 times when the dosage of n (levulinic acid 1: 5) TNTs-SO3H was 10% of the mass of levulinic acid, the reaction temperature was 120 鈩，

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