含镓分子筛对纤维素和塑料共催化热解的影响  

Production of Aromatics in Catalytic Fast Pyrolysis of Cellulose and LDPE with ZSM-5 Zeolite Containing Ga Species

作　　者：李剑[1,2] 华德润 张芃[1] 叶水秀 LI Jian;HUA Derun;ZHANG Peng;YE Shuixiu(School of Chemistry and Chemical Engineering,Gannan Normal University;Key Laboratory of Jiangxi University for Functional Materials Chemistry,Ganzhou 341000,China)

机构地区：[1]赣南师范大学化学化工学院 [2]江西省高等学校功能材料化学重点实验室,江西赣州341000

出　　处：《赣南师范大学学报》2024年第6期48-54,共7页Journal of Gannan Normal University

基　　金：国家自然科学基金(21566001);江西省教育厅科技项目(GJJ211421)。

摘　　要：纤维素和废塑料在ZSM-5分子筛上共催化热解,反应的协同作用利于芳烃化合物的生成.通过制备一系列镓改性的ZSM-5分子筛,以进一步提高镓分子筛在共催化热解反应中的催化活性.结果显示,镓浸渍ZSM-5分子筛促进烯烃芳构化反应,但对位二甲苯选择性没有显著提高.而硅镓分子筛孔道内存在的镓氧化物,有助于石油化学品(单环芳烃和烯烃)的生成,对位二甲苯选择性提高到80%.Previous studies indicate that when cellulose and LDPE are co-pyrolyzed with ZSM-5 zeolite,they have a positive synergistic effect that improves aromatics production.To further enhance the synergistic effect,Ga-MFI zeolites have been prepared using impregnation(Ga/ZSM-5)and hydrothermal synthesis(gallosilicate).The results show that although Ga/ZSM-5 zeolite improve the aromatization of olefins,it has no change for the optimization of aromatic hydrocarbon distribution.In contrast,gallosilicate zeolite promote the production of petrochemicals including mono-aromatic hydrocarbons and olefins,and the zeolite also give the highest selectivity of p-xylene(80%),which is a very valuable aromatic hydrocarbon.

关 键 词：纤维素 催化快速热解 HZSM-5分子筛 芳烃 镓改性 

分 类 号：TQ426.95[化学工程]