| 分子筛催化剂上异丁醛异构化制甲乙酮的研究 |
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| 引用本文： | 许章林,张盈珍,王敬春,周贤敏.分子筛催化剂上异丁醛异构化制甲乙酮的研究[J].石油化工,1995(3). |
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| 作者姓名： | 许章林 张盈珍 王敬春 周贤敏 |
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| 作者单位： | 中国科学院大连化学物理研究所，上海石油化工研究院 |
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| 摘 要： | 考察了ＺＳＭ－５、ＮＨ＿４Ｆ改性ＺＳＭ－５、骨架铝部分为硼置换ＺＳＭ－５及骨架为无铝的硼硅分子筛ＢＺＳＭ－５上由异丁醛异构化制甲乙酮的反应性能，并用红外光谱考察了一些样品的表面羟基和酸性。结果表明：具有强酸中心的ｚＳＭ－５分子筛上，异丁醛初始反应转化率极高，但甲乙酮选择性及收串极低；添加ＮＨ＿４Ｆ或硼部分置换铝的ＺＳＭ－５上，甲乙酮收率有所提高；只有弱酸中心的ＢＺＳＭ－５，则同时具有较高的反应活性和甲乙酮选择性，因而获得了较高的甲乙酮收率。分子筛催化剂经预失活处理，可抑制异丁醛反应中的裂解和聚合反应，不同程度地提高了甲乙酮选择性和收率。
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| 关 键 词： | 异丁醛，甲乙酮，异构化，改性ZSM－5BZSM－5 |
Isomerization of Isobutyraldehyde to Methyl Ethyl Ketone over Zeolite Catalysts |
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| Xu Zhanglin, Zhang Yingzhen, Wang Jingchun and Zhou Xianmin.Isomerization of Isobutyraldehyde to Methyl Ethyl Ketone over Zeolite Catalysts[J].Petrochemical Technology,1995(3). |
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| Authors: | Xu Zhanglin Zhang Yingzhen Wang Jingchun and Zhou Xianmin |
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| Abstract: | The reactivity of isobutyraldehyde(IBH)on zeolite ZSM-5,ZSM-5 modified by NH_4For NH_4BF_4 and BZSM-5 has been studied.IR spectra were used to characterize some of thesamples. On ZSM-5,which is characterized by strong acid sites,a high IBH conversion butvery low selectivity and yield of methyl ethyl ketone(MEK) are obtained. ZSM-5 modifiedwith NH_4F or partial substitution of boron for framework aluminum could enhance the yield ofMEK tO some extent.On BZSM-5, uhich possesses only weak acid sites,the conversion ofIBH and selectivity of MEK of a quite high level could be obtained simultaneously. |
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| Keywords: | isobutyraldehyde methy ethyl ketone isomerization modified ZSM-5 BZSM-5 |
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