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| La-SO_4~(2-)改性SBA-15分子筛的制备、表征及催化合成乙酸正丁酯 | |
| 引用本文： | 田志茗,邓启刚,尹燕磊,赵德丰.La-SO_4~(2-)改性SBA-15分子筛的制备、表征及催化合成乙酸正丁酯[J].石油化工,2008,37(7). |
| 作者姓名： | 田志茗 邓启刚 尹燕磊 赵德丰 |
| 作者单位： | 1. 大连理工大学国家精细化工重点实验室,辽宁大连116012;齐齐哈尔大学化学化工学院,黑龙江齐齐哈尔161006 2. 齐齐哈尔大学化学化工学院,黑龙江齐齐哈尔,161006 3. 大连理工大学国家精细化工重点实验室,辽宁大连,116012 |
| 摘 要： | 用固体研磨法对 SBA-15分子筛进行 La-SO_4~(2-)改性,制备了 La-SO_4~(2-)改性 SBA-15分子筛(La-SO_4~(2-)/SBA-15)催化剂,采用 X 射线衍射、红外光谱和低温 N_2吸附-脱附、热重-差热分析、NH_3-程序升温脱附等方法对 La-SO_4~(2-)/SBA-15催化剂进行了表征。表征结果显示,La 已进入 SBA-15分子筛中,制得的 La-SO_4~(2-)/SBA-15催化剂保持高度有序的二维六方介孔结构。用 Hammett 指示剂法测得 La-SO_4~(2-)/SBA-15催化剂的表面酸强度(H_0)为2.77 |
| 关 键 词： | SBA-15分子筛 镧改性 酯化反应 催化 乙酸正丁酯 |
Preparation of SBA-15 Molecular Sieve Modified with Lanthanum-SO42- and Its Catalytic Activity in Synthesis of n-Butyl Acetate |
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| Tian Zhiming,Deng Qigang,Yin Yanlei,Zhao Defeng.Preparation of SBA-15 Molecular Sieve Modified with Lanthanum-SO42- and Its Catalytic Activity in Synthesis of n-Butyl Acetate[J].Petrochemical Technology,2008,37(7). | |
| Authors: | Tian Zhiming Deng Qigang Yin Yanlei Zhao Defeng |
| Abstract: | Mesoporous molecular sieve SBA-15 was synthesized and incorporated with lanthanum and sulfate group by solid state grinding without solvent.The obtained molecular sieve was characterized by means of XRD,low temperature nitrogen adsorption-desorption,IR,TG-DTA and NH_3-TPD.Results showed that lanthanum had been incorporated into SBA-15 molecular sieve.The prepared La-SO_4~(2-)/SBA-15 catalyst keeps highly ordered mesoporous two-dimensional hexagonal structure and does not change mesoporous channel structure of mother SBA-15 molecular sieve.Acid strength(H_0)on catalyst surface was determined by mean of Hammett indication method(2.77 |
| Keywords: | SBA-15 molecular sieve lanthanum modification esterification catalysis n-butyl acetate |
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