| 铁镧交联蒙脱土的合成及催化氧化性能 |
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| 引用本文： | 宋贺,郭祥峰,贾丽华.铁镧交联蒙脱土的合成及催化氧化性能[J].化学反应工程与工艺,2009,25(4). |
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| 作者姓名： | 宋贺 郭祥峰 贾丽华 |
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| 作者单位： | 齐齐哈尔大学,黑龙江,齐齐哈尔,161006 |
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| 基金项目： | 黑龙江省自然科学基金，黑龙江省科技攻关计划资助项目 |
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| 摘 要： | 以临安钠基蒙脱土为原料,制备了铁交联和铁镧复合交联蒙脱土催化剂,利用物理吸附(BET)、扫描电镜(SEM)和X-射线衍射(XRD)对催化剂进行表征,并以铁镧复合交联蒙脱土(Fe/La-PILC)为催化剂,质量分数为30%的过氧化氢水溶液为氧化剂,考察反应时间、催化剂用量和过氧化氢用量对苯甲醇催化氧化制苯甲醛的影响.结果表明:铁镧复合交联蒙脱土形成了比较均一的中孔骨架结构;当苯甲醇与过氧化氢物质的量之比为1:2,Fe/La(200)-PILC(Fe与La物质的量之比为200)质量分数为4%,反应5 h时,苯甲醇转化率和苯甲醛选择性分别为62.1%和86.4%.研究铁镧交联蒙脱土催化剂的催化氧化机理,发现Fe/La-PILC催化氧化苯甲醇的活性氧来自于Fe/La-PILC所吸附的氧.
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| 关 键 词： | 铁镧复合交联蒙脱土 苯甲醇 苯甲醛 催化氧化 |
Synthesis of Fe/La-Cross-Linked Montmorillonite and Its Catalytic Oxidation Performance |
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| Song He,Guo Xiangfeng,Jia Lihua.Synthesis of Fe/La-Cross-Linked Montmorillonite and Its Catalytic Oxidation Performance[J].Chemical Reaction Engineering and Technology,2009,25(4). |
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| Authors: | Song He Guo Xiangfeng Jia Lihua |
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| Affiliation: | Song He Guo Xiangfeng Jia Lihua (Qiqihar University,Heilongjiang Qiqihar 161006,China) |
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| Abstract: | The Fe-linked montmorillonite (Fe-PILC) and Fe/La-cross-linked montmorillonite (Fe/La-PILC) catalysts were synthesized from Lin'an Na-Mont. And the catalysts were characterized by means of N_2-physisorption (BET), scanning electron microscope (SEM) and X-ray diffraction (XRD). The oxidation of benzyl alcohol with H_2O_2 (mass fraction 30%) to benzaldehyde was carried out. The results showed that the framework fabric of homogeneous mesopores was formed in the cross-linked montmorillonite. And the conversion of benzyl alcohol and the selectivity of benzaldehyde reached 62. 1% and 86. 4% , respectively, under the conditions of molar ratio of alcohol to hydrogen peroxide 1:2, mass fraction of Fe/La(200)-PILC 4% and reaction time 5 h. The active oxygen species in the reaction is the absorbed oxygen of Fe/La-PILC. |
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| Keywords: | Fe/La-cross-linked montmorillonite? Benzyl alcohol benzaldehyde catalytic oxidation |
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