第 44 卷第 1 期 |  | Vol. 44 No. 1 | 2014 年 2 月 | Feb 2014 |
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所屬欄目:有機合成原料
常壓催化脫氫法合成2-乙基己酸 |
李文龍,宋 菲,夏至金秋,李艷云*,尹振晏
(北京石油化工學(xué)院 化工學(xué)院,北京 102617) |
摘 要:常壓下,2-乙基己醇與氫氧化鈉、在氧化銅催化下,脫除氫氣得2-乙基己酸。正交實(shí)驗考察了影響反應的因素,優(yōu)化的工藝條件為:物料配比為n(2-乙基己醇)∶n(氫氧化鈉)=1.3∶1.0、控制反應在220℃進(jìn)行2.5 h、催化劑氧化銅用量為3.0%(以2-乙基己醇計,m/m),優(yōu)化工藝條件下產(chǎn)品收率達80.9%,純化后的產(chǎn)品經(jīng)紅外光譜、元素分析確證。 |
關(guān)鍵詞:2-乙基己醇;2-乙基己酸;常壓;催化脫氫;合成 |
中圖分類(lèi)號:TQ643.38 文獻標識碼:A 文章編號:1009-9212(2014)01-0025-04 |
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Synthesis of 2-Ethylhexanoic Acid by Catalytic Dehydrogenation under Atmospheric Pressure |
LI Wen-long,SONG Fei,XIA Zhi-jinqiu,LI Yan-yun*,YIN Zhen-yan
(Chemical Engineering Department,Beijing Institute of Petrochemical Technology,Beijing 102617,China) |
Abstract:Under atmospheric pressure,2-ethylhexanoic acid was synthesized from the reaction between 2-ethylhexanol and sodium hydroxide in the presence of copper(II)oxide as the catalyst,followed by dehydrogenation. The effects of ratio of raw materials,reaction time,reaction temperature and catalyst dosage were investigated by orthogonal experiments. Under the optimum reaction conditions with copper(II)oxide of 2.6 g,n(2-ethylhexanol)∶n(sodium hydroxide)=1.3∶1.0,reaction temperature of 220℃ and reaction time of 2.5 h,the product was obtained in 80.9% yield and confirmed with FT-IR spectra and elemental analysis. |
Key words:2-ethylhexanol;2-ethylhexanoic acid;atmospheric pressure;catalytic dehydrogenation;synthesis |
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基金項目:2013年北京市大學(xué)生研究訓練計劃項目。
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作者簡(jiǎn)介:李文龍(1992-),男,北京人,主要從事精細化工研究。(E-mail:liwenlong@bipt.edu.cn)
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聯(lián) 系 人: 李艷云,副教授,主要從事精細化工研究。(E-mail:liyanyun@bipt.edu.cn)
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收稿日期: 2013-11-1
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