文献类型：期刊文献

英文题名：Non-hydrocracking of diesel over hierarchical hzsm-5 zeolite to produce gasoline

作者：Lian, Zhentao[1];Yang, Chao[1];Shi, Li[1];Meng, Xuan[1];Liu, Naiwang[1];Yang, Yue[1];Wang, Xin[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：32

期号：12

外文期刊名：APPLIED ORGANOMETALLIC CHEMISTRY

收录：;EI(收录号：20183905878471);WOS:【SCI-EXPANDED(收录号:WOS:000451408700006)】；

语种：英文

外文关键词：alkali treatment; hierarchical pore; non-hydrocracking; ZSM-5 zeolite

摘要：A series of ZSM-5 zeolites (SiO2/Al2O3 = 50) were desilicated by sodium hydroxide with different concentrations (0.1 mol/L, 0.3 mol/L, 0.5 mol/L and 0.7 mol/L). The crystal morphology, textural property and acidic property of the catalysts were characterized by XRD, TEM, N-2 adsorption-desorption isotherm, NH3-TPD, Al-27 MAS NMR and IR spectroscopy. Meanwhile, the influence of sodium hydroxide concentration in the gasoline yield, products distribution, coke deposition in the non-hydrocracking of diesel were studied. Results showed that mesopores were successfully induced to ZSM-5 zeolites after desilication; more weak acid sites and Lewis acid sites (LAS) were generated; in contrast, the strong acid sites and Bronsted acid sites (BAS) were weakened, leading to an increased ratio of LAS to BAS (LAS/BAS). After alkali treatment, HZ-0.5A exhibited the maximal conversion, yield and selectivity of gasoline; while the HZ-0.5A-1 AC exhibited a lower yield and selectivity. It was also observed that the amount of coke and P/O performed a positive relationship with the LAS/BAS.