| SO_4~(2-)/Zr-SBA-15介孔材料的合成及其催化性能 |
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| 引用本文： | 焦卫勇,李福祥,周梅梅,李瑞丰,谢克昌.SO_4~(2-)/Zr-SBA-15介孔材料的合成及其催化性能[J].石油化工,2010(6). |
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| 作者姓名： | 焦卫勇 李福祥 周梅梅 李瑞丰 谢克昌 |
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| 作者单位： | 太原理工大学精细化工研究所;煤科学与技术教育部和山西省重点实验室; |
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| 摘 要： | 在乙醇蒸气中以硝酸锆为原料,用浸渍晶化法合成了一系列Zr-SBA-15介孔分子筛,并采用XRD、N2吸附-脱附、元素分析和吡啶吸附红外光谱法对其进行了表征。表征结果显示,Zr-SBA-15分子筛孔道规整,ZrO2呈四方相,当n(Zr)∶n(Si)=1.34时,ZrO2质量分数达50.53%,比表面积为356m2/g。用硫酸浸渍Zr-SBA-15分子筛制得SO42-/Zr-SBA-15介孔固体超强酸,它同时具有L酸和B酸中心,且L酸量较大。以正戊烷异构化为探针反应评价了SO42-/Zr-SBA-15的催化活性,在35℃、SO42-/Zr-SBA-15(n(Zr)∶n(Si)=2.15)用量0.5g、正戊烷25μL的条件下反应3h,正戊烷转化率高达46.6%。
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| 关 键 词： | 浸渍晶化 氧化锆 介孔材料 固体超强酸 SO42-/Zr-SBA-15催化剂 正戊烷异构化 |
Synthesis and Catalytic Performance of SO_4~(2-)/Zr-SBA-15 Mesoporous Materials |
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| Jiao Weiyong,Li Fuxiang,Zhou Meimei,Li Ruifeng,Xie Kechang.Synthesis and Catalytic Performance of SO_4~(2-)/Zr-SBA-15 Mesoporous Materials[J].Petrochemical Technology,2010(6). |
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| Authors: | Jiao Weiyong Li Fuxiang Zhou Meimei Li Ruifeng Xie Kechang |
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| Affiliation: | Jiao Weiyong1,Li Fuxiang1,Zhou Meimei1,Li Ruifeng1,2,Xie Kechang2 (1.Research Institute of Special Chemicals,Taiyuan University of Technology,Taiyuan Shanxi 030024,China,2. Key Laboratory of Coal Science and Technology of Shanxi Province and Ministry of Education,China) |
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| Abstract: | A series of Zr-SBA-15 mesoporous molecular sieves were synthesized through impregnation-crystallization method in ethanol vapor atmosphere with inexpensive zirconium nitrate as raw material. The Zr-SBA-15 samples were characterized by means of XRD,N2 adsorption-desorption,elemental analysis and pyridine-IR. Results showed that the Zr-SBA-15 had well-ordered pore channels and the zirconia was in tetragonal crystalline state. Mass fraction of zirconia could be 50.53% when n(Zr):n(Si) was 1.34,and specific sur... |
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| Keywords: | impregnation-crystallization zirconia mesoporous material solid superacid SO2-4/Zr-SBA-15 catalyst n-pentane isomerization |
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