| 赵国良,张武阳,滕加伟,宋庆英,林文勇.新型固体超强酸催化剂的制备与裂解性能研究[J].分子催化,2002,(3):191-194 |
| 新型固体超强酸催化剂的制备与裂解性能研究 |
| Study on Synthesis of a New Solid Superacid Catalyst and their Cracking Properties |
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| DOI： |
| 中文关键词: 固体超强酸催化剂 制备 裂解性能 介孔分子筛 1,3,5－三异丙苯 MCM－41 |
| 英文关键词:Solid Superacid,MCM-41,Synthesis,Cracking |
| 基金项目: |
| 赵国良 张武阳 滕加伟 宋庆英 林文勇 |
| [1]上海石油化工研究院，上海201208 [2]吉林大学化学系，吉林长春130023 |
| 摘要点击次数: 1519 |
| 全文下载次数: 20 |
| 中文摘要: |
| 采用浸渍法，将活性超强酸SO4^2-/ZrO2引入Si-MCM-41介孔分子筛，得到一种新型的固体超强酸催化剂SO4^2-/ZrO2 /Si-MCM-41，其PKA值可达-12.7，酸度分布曲线表明强酸中心数量远低于弱酸中心，XRD结果显示，Si-MCM-41骨架部分塌陷，但保留了主要骨架结构，采用Py-IP法，测定SO4^2-/ZrO2 /Si-MCM-41上酸类型以L酸为主，在催化1，3，5-三异丙苯裂解反应中该催化剂的性能优于微孔分子筛。 |
| 英文摘要: |
| The active superacid SO+{2-}-4/ZrO-2 component was successfully supported on the surface of Si-MCM-41 mesoporous sieve to form a new SO+{2-}-4/ZrO-2/Si-MCM-41 superacid catalyst with an acid strength of -12.7. The curve of acid intensity distribution showed that the strong acid sites are less than weak acid sites. XRD pattern showed that the mesoporous structure of Si-MCM-41 collapsed partly but keep the main framework. Py-IR were used for this new catalyst to measure the presence of Brnsted and Lewis acid sites, which showed that Lewis acid sites of SO-4+{2-}/ZrO-2/Si-MCM-41 were much stronger than that of Brnsted acid. The results of cracking of 1,3,5-triisopropylbenene elucidated the unique advantages that microporous sieve couldn't possess. |
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