SBA-15负载金属锡催化<em>α</em>-蒎烯环氧化反应

摘要

采用水热合成法,以P123为模板剂制备介孔材料SBA-15,然后通过SnCl₄·5H₂O浸渍负载及硫酸浸渍,进一步合成介孔催化剂SO₄^2-/Sn/SBA-15。通过IR、TG、SEM和TEM进行表征,并将负载型介孔分子筛SO₄^2-/Sn/SBA-15用于催化α-蒎烯的环氧化反应。讨论n(SBA-15):n(SnCl₄·5H₂O),催化剂加入量,n(环氧化试剂过氧乙酸):n(原料)对环氧化产物得率的影响。结果表明:n(SBA-15):n(SnCl₄·5H₂O)为5:1,催化剂加入量为2.5%,n(CH₃COOOH):n(α-蒎烯)=1.2:1.0时,α-蒎烯的转化率为95.4%,产物2,3-环氧蒎烷的得率为88.82%。

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	刘慧青
	吴春华
	陈保森
	高明福

关键词：介孔分子筛SBA-15； SO₄^2-/Sn/SBA-15； α-蒎烯；环氧化

Abstract：

By hydrothermal synthesis method, mesoporous molecular sieve SBA-15 was obtained with the template P123, then tin modified mesoporous molecular sieve SO₄^2-/Sn/SBA-15 was obtained by impregnation into solution of tin(IV) chloride pentahydrate, then into sulfuric acid. The infrared spectroscopy(IR), thermogravimetric analysis(TG), scanning electron microscopy(SEM) and transmission electron microscopy(TEM) were used to characterize the structure of the catalyst. The performance of the catalyst was studied by epoxidation of α-pinene. The influence of the molar ratio of SBA-15 and SnCl₄·5H₂O, the dosage of catalyst and the molar ratio of peroxyacetic and α-pinene were discussed.The results showed that the conversion rate of α-pinene could reach 95.4%, and the yield of 2,3-epoxypinane was 88.82% when the molar ratio of SBA-15 to SnCl₄·5H₂O was 5:1, dosage of SO₄^2-/Sn/SBA-15 catalyst was 2.5% (α-pinene weight),and the molar ratio of peroxyacetic to α-pinene was 1.2.

Keywords： mesoporous molecular sieve SBA-15； SO₄^2-/Sn/SBA-15； α-pinene； epoxidation

Received 2014-09-02;

Fund:

国家自然科学基金(31060099)。

Corresponding Authors: 吴春华, E-mail: kmwuchunhua@163.com。 Email: kmwuchunhua@163.com

About author: 刘慧青(1988-),女,硕士研究生,主要从事介孔材料催化剂在蒎烯环氧化反应中的应用研究。

引用本文:

刘慧青, 吴春华, 陈保森, 高明福.SBA-15负载金属锡催化α-蒎烯环氧化反应[J]. 化学工业与工程, 2016,33(1): 29-34

Liu Huiqing, Wu Chunhua, Chen Baosen, Gao Mingfu.Epoxidation of α-Pinene on Tin-Modified Mesoporous Molecular Sieve SBA-15[J]. Chemcial Industry and Engineering, 2016,33(1): 29-34

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