化工进展2017，Vol.36Issue(9)：3329-3335,7.DOI:10.16085/j.issn.1000-6613.2017-0045
碱处理HZSM-5催化纤维素热裂解制备芳烃
Preparation of aromatics from fast catalytic pyrolysis of cellulose over
alkali-treated HZSM-5
程浩 1周峰 2陈皓 3傅杰 2陈可泉 2乔凯 1欧阳平凯3
作者信息
- 1. 南京工业大学生物与制药工程学院,江苏 南京211800
- 2. 浙江大学化学工程与生物工程学院生物质化工教育部重点实验室,浙江杭州 310027
- 3. 中国石油化工股份有限公司抚顺石油化工研究院,辽宁抚顺 113001
- 折叠
摘要
Abstract
Hierarchical HZSM-5 were obtained by alkali treatment of commercial HZSM-5 zeolites (SiO2/Al2O3 radios of 25,38 and 50)using NaOH solutions of different concentrations (0.2—1.0mol/L)and exchanged with NH4Cl. The catalytic performance of the obtained hierarchical HZSM-5 in fast catalytic pyrolysis of cellulose was studied. The catalysts were characterized by N2-BET,XRD,TEM and NH3-TPD. The XRD patterns showed that the desilicated ZSM-5 structure was still maintained. The results of N2-BET and TEM image indicated that the mesopores were created after alkali treatment indicating the formation of hierarchical structure. The NH3-TPD results showed that the acidity increased first and then decreased as the alkali concentration increased. The Py-GCMS was used to test the catalytic activity of fast pyrolysis of cellulose. The yields of aromatic over Z25,Z38,and Z50 were 33.5％,35.6％ and 32.2％,respectively,and increased to 37.1％,38.5％ and 34.0％ after treated with 0.4mol/L NaOH solution. The coke yield also decreased to 29.1％,25.8％ and 29.8％ respectively after alkali treatment. The results indicated that controlled desilication of zeolite could increase the conversion of cellulose to aromatic hydrocarbons and inhibited the formation of coke.关键词
碱处理/HZSM-5/沸石/催化/催化剂/热裂解/芳烃Key words
alkali treatment/HZSM-5/zeolite/catalysis/catalyst/pyrolysis/aromatic分类
化学化工引用本文复制引用
程浩,周峰,陈皓,傅杰,陈可泉,乔凯,欧阳平凯..碱处理HZSM-5催化纤维素热裂解制备芳烃[J].化工进展,2017,36(9):3329-3335,7.
