Ethylation of coking benzene with ethanol over nano-sized ZSM-5 zeolites: Effects of rare earth oxides on catalyst stability
发布时间：2019-03-09
点击次数：
- 论文类型：
- 期刊论文
- 发表时间：
- 2012-08-05
- 发表刊物：
- CATALYSIS COMMUNICATIONS
- 收录刊物：
- Scopus、EI、SCIE
- 文献类型：
- J
- 卷号：
- 25
- 页面范围：
- 18-21
- ISSN号：
- 1566-7367
- 关键字：
- Coking benzene; Nano-sized ZSM-5 zeolites; Catalyst stability; Y2O3
- 摘要：
- The ethylation of coking benzene with ethanol over nano-sized ZSM-5 zeolites modified with Y2O3, La2O3 and CeO2 was investigated in a fixed-bed reactor. Nano-sized ZSM-5 zeolite modified with Y2O3 was more stable than the other two samples during the reaction. The results from NH3-TPD. Py-IR, and TG-DTA show that the strong Bronsted acid sites were eliminated, consequently suppressing coke deposits during the reaction. Combined with the results from H-1 NMR and Xe-129 NMR spectra, it is concluded that the hydrated Yttrium ions with small size reached deep location in zeolite channel. (C) 2012 Elsevier B.V. All rights reserved.
- 第一作者
- Sun, Linping
- 合写作者
- Xiong, Guang,Wang, Xiangsheng,Guo, Xinwen
- 通讯作者
- Sun, LP (reprint author), Changchun Univ Technol, Sch Chem Engn, Dept Chem Technol, Changchun 130012, Peoples R China.