温度对Hβ分子筛催化剂结炭影响的13C CP/MAS NMR研究

波谱学杂志 ›› 1999, Vol. 16 ›› Issue (3): 207-210.

温度对Hβ分子筛催化剂结炭影响的¹³C CP/MAS NMR研究

艾选军¹, 周建威¹, 叶朝辉¹, 王敬中², 王利军⁴, 王旭³, 郭振亚⁴

1. 中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室, 武汉 430071;
2. 南开大学化学系, 天津 300071;
3. 南开大学催化剂厂, 天津 300071;
4. 南开大学物理系, 天津 300071

收稿日期:1999-02-08 修回日期:1999-04-02 出版日期:1999-06-05 发布日期:2018-01-11
作者简介:艾选军,男,1970出生,硕士生
基金资助:
国家自然科学基金资助项目(项目编号:29673056)

CHARACTERIZATION OF COKE DEPOSITED ON Hβ ZEOLITE CATALYST DURING ALKYLATION OF ANILINE BY NMR

Ai Xuanjun¹, Zhou Jianwei¹, Ye Chaohui¹, Wang Jingzhong², Wang Lijun⁴, Wang Xu³, Guo Zhenya⁴

1. State Key Laboratory of Magenetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071;
2. Department of Chemistry, Nankai Univ., Tianjin, 300071;
3. Catalyst Factory, Nankai Univ., Tianjin, 300071;
4. Department of Physics, Nankai Univ., Tianjin, 300071

Received:1999-02-08 Revised:1999-04-02 Online:1999-06-05 Published:2018-01-11

摘要/Abstract

摘要： 对Hβ分子筛催化苯胺烷基化反应中结炭随反应温度变化的TG DTA和¹³CCP/MASNMR研究表明,结炭的主要组成为缩聚芳烃化合物及少量烯烃.随反应温度的升高,结炭量增大,脂肪烃含量减少,芳烃含量增加.当反应温度达到500℃时,焦炭的主要组成为稠环芳烃.

关键词: Hβ分子筛, 苯胺烷基化, 结炭, ¹³C CP/MAS NMR

Abstract: Coke deposited on Hβ-zeolite in the alkylation reactions of aniline and isopropanol at different temperatures (350-500℃) has been studied by ¹³C CP/MAS NMR and thermal analysis methods. The results showed that the composition and weight of coke are strongly dependent on the reaction temperature. At the lower temperture (350℃), the coke is deposited slowly and the constituents are partly alkylenes and partly polyaromatic carbons(condensed ring compounds). However, at the higher temperature, the coke is deposited quickly and the constituent is mainly high polyaromatics.

Key words: Hβ-zeolite, Alkylation of aniline, Coke, ¹³C CP/MAS NMR

艾选军, 周建威, 叶朝辉, 王敬中, 王利军, 王旭, 郭振亚. 温度对Hβ分子筛催化剂结炭影响的¹³C CP/MAS NMR研究[J]. 波谱学杂志, 1999, 16(3): 207-210.

Ai Xuanjun, Zhou Jianwei, Ye Chaohui, Wang Jingzhong, Wang Lijun, Wang Xu, Guo Zhenya. CHARACTERIZATION OF COKE DEPOSITED ON Hβ ZEOLITE CATALYST DURING ALKYLATION OF ANILINE BY NMR[J]. Chinese Journal of Magnetic Resonance, 1999, 16(3): 207-210.

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温度对Hβ分子筛催化剂结炭影响的¹³C CP/MAS NMR研究

CHARACTERIZATION OF COKE DEPOSITED ON Hβ ZEOLITE CATALYST DURING ALKYLATION OF ANILINE BY NMR

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