Citation: LI Jun-hua, WANG Li-na, ZHANG Dan, QIAN Jian-hua, LIU Lin, XING Jin-juan. Effect of ZSM-5 acid modification on aromatization performance of methanol[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(8): 957-963. shu

Effect of ZSM-5 acid modification on aromatization performance of methanol

LI Jun-hua ^1,2 ,
WANG Li-na ¹ ,
ZHANG Dan ^1,, ,
QIAN Jian-hua ¹ ,
LIU Lin ¹ ,
XING Jin-juan ¹

1.
School of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, China
2.
School of Chemistry and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China

Corresponding author: ZHANG Dan, bestzhangdan@163.com
Received Date: 20 March 2019
Revised Date: 18 June 2019

Fund Project: The project was supported by National Natural Science Foundation of China(21606117), Liaoning Natural Science Foundation(2015020623, 201602380), Liaoning Innovation Team Project(2018-479-14, LT2015001)and Bohai University Doctoral Start-up Fund(0518bs016, 0518bs019)Liaoning Natural Science Foundation 201602380Liaoning Natural Science Foundation 2015020623Bohai University Doctoral Start-up Fund 0518bs019Bohai University Doctoral Start-up Fund 0518bs016Liaoning Innovation Team Project LT2015001National Natural Science Foundation of China 21606117Liaoning Innovation Team Project 2018-479-14

Figures(7)

ZSM-5 zeolites were modified with tartaric acid, oxalic acid and nitric acid. The physicochemical properties of ZSM-5 zeolites, such as crystal structure, acid content, surface area and pore volume, were characterized by XRD, SEM, NH₃-TPD, XRF, ²⁷Al MAS NMR, pyridine adsorption infrared spectroscopy and N₂ adsorption-desorption isotherms. The catalytic activity of ZSM-5 zeolites were investigated under the condition of reaction temperature 422 ℃ and methanol mass space velocity of 4.74 h^-1. The specific surface area, acidity, pore volume and catalytic performance of the catalyst are affected by acid modification. The acid-modified zeolites show good catalytic activity in methanol aromatization (MTA) reaction, and oxalic acid modified catalyst shows higher catalytic activity and selectivity. The yield of aromatic hydrocarbons and BTX reaches 57.40% and 39.40% for reaction time at 8 h, respectively.
- ZSM-5 zeolite,
- acid-modified,
- methanol aromatization
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