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Open AccessArticle

Effects of Additives and Metals on Crystallization of Nano-Sized HZSM-5 Zeolite for Glycerol Aromatization

by Wei Xu 1,2,3, Lijing Gao 3,* and Guomin Xiao 3
1
School of Environmental Engineering, Nanjing Institute of Technology, Nanjing 211167, China
2
Energy Research Institute, Nanjing Institute of Technology, Nanjing 211167, China
3
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
*
Author to whom correspondence should be addressed.
Catalysts 2019, 9(11), 899; https://doi.org/10.3390/catal9110899
Received: 10 October 2019 / Revised: 25 October 2019 / Accepted: 26 October 2019 / Published: 28 October 2019
Nano-sized HZSM-5 (n-HZSM-5) was synthesized and applied in the aromatization of glycerol. The effects of additives (carboxymethylcellulose sodium, NaCl, sodium alginate, etc.) on the chemical and physic properties of n-HZSM-5 during preparation were investigated. Metal modification was also investigated based on the synthesized n-HZSM-5. The results showed that the addition of carboxymethylcellulose sodium (CMC-Na), NaCl and sodium alginate (SA) led to forming smaller sizes of HZSM-5 and promoted the acid amounts of the catalysts, which increased its catalytic activities for obtaining BTX. The highest BTX yield of ~35% was obtained by SA derived n-HZSM-5, and the life of the catalyst were both obviously promoted by the additives with a highest of ~11 h by γ-(2,3-epoxypropoxy)propytrimethoxysilane (KH-560) derived n-HZSM-5. BTX yields could be improved by 40%by the addition of Zn and Cd in n-HZSM-5 while having little effect on the catalyst life. View Full-Text
Keywords: nano-sized HZSM-5; glycerol; aromatization; BTX nano-sized HZSM-5; glycerol; aromatization; BTX
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MDPI and ACS Style

Xu, W.; Gao, L.; Xiao, G. Effects of Additives and Metals on Crystallization of Nano-Sized HZSM-5 Zeolite for Glycerol Aromatization. Catalysts 2019, 9, 899.

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