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第 38 卷第 3 期Vol. 38 No. 3
2008 年 6 月Jun 2008

所屬欄目:有機合成原料

納米二氧化硅負載磷鎢酸催化合成2-十二烷基苯
宋 偉,徐雪麗,史恒欣 (南陽(yáng)理工學(xué)院 生物與化學(xué)工程學(xué)院 河南 南陽(yáng) 473000)
摘 要:采用納米二氧化硅為載體,負載磷鎢酸制備催化劑,催化合成制備2-十二烷基苯。實(shí)驗表明:納米二氧化硅負載磷鎢酸制備的催化劑在烷基化反應中表現出很好的催化性能;優(yōu)化的工藝條件為m(苯) ∶ m(1-十二烯)=8 ∶ 1,反應時(shí)間為2 h,反應溫度為80℃,催化劑負載量和加入量分別為20%(m/m)和2%(m/m,以反應物總量計);催化劑對苯與1-十二烯合成反應表現出較高活性和選擇性。通過(guò)對反應產(chǎn)物進(jìn)行高效液相色譜質(zhì)譜聯(lián)用儀分析,結果顯示產(chǎn)物直鏈性較好。
關(guān)鍵詞:納米二氧化硅負載磷鎢酸;烷基化;1-十二烯;合成
中圖分類(lèi)號:O643  文獻標識碼:A  文章編號:1009-9212(2008)03- 0062-03
Synthesis of 2-Dodecylbenzene with Supported Heteropoly Acid on the Surface of Silicon Dioxide as Catalyst
SONG Wei,XU Xue-li,SHI Heng-xin (Nanyang Institute of Technology The department of biology and chemistry,Nanyang 473000,China)
Abstract:A novel catalyst was prepared by supported HPW12 on the surface of nano-silicon dioxide and was applied to synthesize 2-dodecylbenzene. The experiment results indicated that the catalyst(HPW12/SiO2)had excellent catalytic property in the alkylation. Under the optimized reaction conditions,such as 8 ∶ 1 mass ratio of benzene to 1-deodecene,2 h reaction time,80℃ reaction temperature,20% catalysts such as and 2% catalysts input ,the catalyst had high activity and selectivity. The structure of product was characterized by HPLC-MS,demonstration that the product had a good straight-chain character.
Key words:HPW12 /SiO2;alkylation;1-deodecene;synthesis
基金項目:南陽(yáng)理工學(xué)院青年基金項目(11653QNJJ0726)。
作者簡(jiǎn)介:宋 偉(1978-),吉林長(cháng)春人,碩士,講師。研究方向:綠色有機合成。(E-mail:leirentsw@sohu.com)
收稿日期: 2008-06-1
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