| 第 32 卷第 6 期 |  | Vol. 32 No. 6 | | 2002 年 12 月 | Dec 2002 |
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所屬欄目：其它
稀土復合固體酸SO_4~(2-)/TiO_2/La~(3+)催化合成馬來(lái)酸二辛酯 |
| 華平; 李建華; 施磊(南通工學(xué)院化工系; 226007) |
| 摘 要：研究了固體超強酸SO2 - 4/TiO2 /La3+用于合成馬來(lái)酸二辛酯。并與硫酸對甲苯磺酸的催化效果比較�？疾炝薚i/La物質(zhì)量比、硫酸濃度、焙燒溫度對催化劑活性和反應時(shí)間對酯化反應的影響。結果表明 :當Ti/La物質(zhì)量比為 6∶1、浸漬液硫酸濃度為 1 8mol/L、在5 5 0℃下焙燒時(shí)具有最高的催化活性 ,用于馬來(lái)酸酐和正辛醇的酯化反應可得無(wú)色透明的酯化產(chǎn)物 ,3h內酯化率達 96 9%。 |
| 關(guān)鍵詞：固體超強酸; 催化劑; 馬來(lái)酸二辛酯 |
| 中圖分類(lèi)號： 文獻標識碼： 文章編號：1009-9212(2002)06-0029-03 |
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| Synthesis of Dioctyl Meleate by Solid Super Acid SO_4~(2-)/TiO_2/La~(3+) Catalyst |
| HUA Ping; et at. （Departement of Chemical Engineering; Nantong Institute of Technology; Nantong; 226007; China） |
| Abstract：Solid super acid catalyst SO 2- 4/TiO 2/La 3+ was prepared and used in synthesizing dioctyl maleate, in comparison with sulfur acid and p-toluene sulfonic acid. The effects of prepared conditions such as the sulfur acid concentration, the temperature and time of bakring on catalytic activity and reaction time on esterifi-calion. The results shew that the catalyst had splendid catalytic activity for the synthesis of dioctyl maleale, immersing 10 hours in 1.8 mol/L. sulfur acid solution, baking 3 ... |
| Key words：solid super acid; dioclyl melate; esteralificalion |
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收稿日期：2002-04-04
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