Abstract
ZSM-5 with hierarchical pore structure was synthesized by a simple two-step hydrothermal crystalliza-tion from silica fume without using any organic ammonium templates.The synthesized ZSM-5 were oval shaped particles with a particle size about 2.0 μm and weak acid-dominated with proper Brønsted(B)and Lewis(L)acid sites.The ZSM-5 was used for catalytic co-cracking of n-octane and guaiacol,low-density polyethylene(LDPE)and alkali lignin(AL)to enhance the production of benzene,toluene,ethyl-benzene and xylene(BTEX).The most significant synergistic effect occurred at n-octane/guaiacol at 1∶1 and LDPE/AL at 1∶3,under the condition,the achieved BTEX selectivity were 24％and 33％(mass)higher than the calculated values(weighted average).The highest BTEX selectivity reached 88.5％,which was 3.7％and 54.2％higher than those from individual cracking LDPE and AL.The synthesized ZSM-5 exhibited superior catalytic performance compared to the commercial ZSM-5,indicating potential application prospect.
基金项目
国家自然科学基金(22078076)
广西自然科学基金(2020GXNSFAA159174)
Opening Project of National Enterprise Technology Center of Guangxi Bossco Environmental Protection Technology Co.,Ltd(GXU-BFY-2020-005)
NETL
NSTL
万方数据