| 蔡艳,米普科,许胜.γ-A12O3改性对AlCl3/γ-Al2O3催化剂性能的影响[J].分子催化,2015,(2):111-117 |
| γ-A12O3改性对AlCl3/γ-Al2O3催化剂性能的影响 |
| Study on the Performance of AlCl3 / γ-Al2O3 Catalyst with Modified γ-Al2O3 |
| 投稿时间：2015-04-21 修订日期：2015-05-03 |
| DOI： |
| 中文关键词: 改性，固载，γ-氧化铝，三氯化铝，酸性位 |
| 英文关键词:Modification, Immobilization, γ-alumina, Aluminum chloride, Acid site |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘要点击次数: 1431 |
| 全文下载次数: 1880 |
| 中文摘要: |
| 本文中，采用HCl和NaOH改性 γ-A12O3载体制备AlCl3/γ-A12O3固载催化剂，用吡啶-FTIR和吡啶-TPD技术分析了催化剂的表面酸性(酸中心类型、酸强度和酸量)，并以1-癸烯齐聚作为探针反应，研究了催化剂的稳定性以及催化剂对聚合反应的影响。结果表明，催化剂含有两种酸类型，即Lewis酸和Brönsted酸，与未改性的催化剂相比，氢氧化钠改性载体制备的催化剂，酸量增大了47%，催化剂催化1-癸烯的齐聚反应活性增加了11.4%；而经盐酸改性制备的催化剂酸量增大112%，催化剂的活性增加了33.6%。酸强度依AlCl3/γ-A12O3，AlCl3/γ-Al2O3(NaOH)，AlCl3/γ-Al2O3(HCl)的顺序增强。 |
| 英文摘要: |
| In this paper, γ-Al2O3 was modified with HCl and NaOH then used as supported material for preparation the catalyst AlCl3 / γ-Al2O3. The supported catalyst surface properties (acid center type, acid strength and acid amount) were characterized by pyridine-FTIR and pyridine-TPD. In addition, the catalytic ability of supported catalyst and its stability were evaluated by the polymerization of 1-decene. The results indicated that there were two types of acid centers on the immobilized catalyst, which were Lewis and Brönsted acid sites. Compared with AlCl3 / γ-Al2O3, the acid amount of NaOH modified catalyst increased 47% and the activity for 1-decene polymerization augmented 11.4%. However, as for the HCl modified catalyst, the increased value were 112% and 33.6% respectively. The acidity grew as the following order: AlCl3 / γ-Al2O3 < AlCl3 / γ-Al2O3(NaOH) < AlCl3 / γ-Al2O3(HCl). |
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