催化作用
甲苯
化学
苯
二甲苯
热解
ZSM-5型
金属
生物量(生态学)
产量(工程)
对二甲苯
无机化学
核化学
沸石
有机化学
材料科学
冶金
地质学
海洋学
作者
Qingfeng Che,Mengke Yang,Xianhua Wang,Qing Yang,Lucy Rose Williams,Haiping Yang,Jun Zou,Kuo Zeng,Youjian Zhu,Yingquan Chen,Hanping Chen
标识
DOI:10.1016/j.biortech.2019.01.081
摘要
Biomass catalytic pyrolysis with various metals (Zn, Fe, Ca, Ce and La) modified ZSM-5 catalysts were analyzed, in order to investigate the relationship between the physicochemical properties of catalysts and the benzene, toluene and xylene (BTX) products. Results revealed that the BTX products were positively correlated with the strong acid site contents of the catalysts. Appropriate amount (0.5–4 wt%) of loaded Zn species increased the strong acid site contents of the catalysts as well as BTX yields, and the highest yield of BTX was observed under Zn loading amount of 2 wt%. While excessive metal loading amount (10 wt%) decreased both the acidity and the physical properties of the catalyst, resulting in poor diffusion of reactants and products in the channel and decreased the BTX yield. It is recommended that ZSM-5 catalyst with higher strong acid site content and pore volume should be used for BTX production.
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