| 异丙苯裂解反应中Ti-ZSM-5分子筛的活性衰减与积炭 |
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| 引用本文： | 蒋大振,左丽华,蒋育林,庞文琴.异丙苯裂解反应中Ti-ZSM-5分子筛的活性衰减与积炭[J].吉林大学学报(理学版),1988(3). |
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| 作者姓名： | 蒋大振 左丽华 蒋育林 庞文琴 |
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| 作者单位： | 吉林大学化学系
(蒋大振，左丽华，蒋育林)，吉林大学化学系(庞文琴) |
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| 摘 要： | 用异丙苯裂解反应考察了Ti-ZSM-5分子筛的催化活性,发现裂解活性与Ti-ZSM-5中Si/Ti有关,Ti进入分子筛骨架降低了积炭活性,但焦炭的生成并不影响稳态活性,表明炭主要沉积在催化剂的外表面上。
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| 关 键 词： | 异丙苯裂解反应 积炭活性 |
On the Activity Decay of Ti-ZSM-5 and Coking in the Cracking of Cumene |
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| Jiang Dazhen,Zuo Lihua,Jiang Yulin and Pang Wenqin.On the Activity Decay of Ti-ZSM-5 and Coking in the Cracking of Cumene[J].Journal of Jilin University: Sci Ed,1988(3). |
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| Authors: | Jiang Dazhen Zuo Lihua Jiang Yulin and Pang Wenqin |
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| Abstract: | The ZSM-5 was treated with titanium tetrachloride (g) at a high temperature. The product named Ti-ZSM-5 zeolite was analysed by XPS, ESR and so on. The results indicated that Ti entered the framework of the molecular sieve. The cracking of cumene on Ti-ZSM-5 and ZSM-5 was measured. Cracking activities were found to be dependent on the Si/Ti ratio in the zeolite. The introduction of titanium into the framework of ZSM-5 lowered coke activity. Coke formation did not affect the steady activity. All of these show that coke is probably deposited essentially on the outer-surface. |
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| Keywords: | cracking of cumene coking and activity decay |
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