Catalytic fast pyrolysis of biomass to aromatics over hierarchical HZSM-5

被引：0

作者：

Ma H. ^{[1
]}

Zhou F. ^{[1
]}

Wu G. ^{[2
]}

Fu J. ^{[3
]}

Qiao K. ^{[1
]}

机构：

[1] Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian

[2] School of Chemistry and Materials Sciences, Heilongjiang University, Harbin

[3] Key Laboratory of Biomass Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou

来源：

Huagong Xuebao/CIESC Journal | 2020年 / 71卷 / 11期

关键词：

Aromatics; Biomass; Catalysis; Cellulose; Hierarchical HZSM-5; Pyrolysis; Rice straw; Zeolite;

D O I：

10.11949/0438-1157.20200091

中图分类号：

学科分类号：

摘要：

A series of HZSM-5 molecular sieves with hierarchical porosity were prepared by acid and/or alkali treatments, and their pore structure and acidity were characterized by XRD, N2 adsorption, XRF, TEM, 27Al MAS NMR and NH3-TPD. The characterization results show that the alkali treatment method used in this paper can generate the mesoporous structure with a pore size concentrated at 3-6 nm. By changing the order of acid and alkali treatment, the number of acid centers and the ratio of strong acid to total acid center can be adjusted. In addition, the catalytic performance of the hierarchical porosity catalysts were studied for the catalytic fast pyrolysis (CFP) of cellulose and rice straw to aromatics on the Py-GC/MS. Compared with the commercial HZSM-5, the catalysts (HZ-OH/H) obtained by alkali first and then acid treatment can increase the aromatics carbon yield of cellulose CFP from 32.3 % to 43.6%, and same for rice straw from 23.0% to 30.8%. The pore structure and acid center distribution characteristics of the multi-stage HZ-OH/H molecular sieve have reference significance for the development of high-efficiency industrial catalysts applied to biomass to produce aromatics. © 2020, Chemical Industry Press Co., Ltd. All right reserved.

引用

页码：5200 / 5207

页数：7

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