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Application of new porous binder material in fluid catalytic cracking reaction
Xionghou Gao,Gongxuan Lu,Haitao Zhang,Baojie Wang,Zhicheng Tang 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.2
A novel porous binder was obtained by acid-treated kaolin. This new binder owned abundant mesomacro pore and good hydrothermal stability. The prepared catalyst using new binder had a character of low attrition index and large pore volume. The catalysts were tested in a fixed-fluidized bed unit. Compared with comparison sample, the conversion of new catalyst was increased by 0.73%, heavy oil yield decreased by 1.11%, the total liquid and light oil yield increased by 0.95% and 0.74%, respectively. The perfect pore structure and good hydrothermal stability of new binder were the possible reason of obtaining prominent performance.
Enhui Yuan,Zhicheng Tang,Kun Zhang,Gongxuan Lu,Zunli Mo 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.42 No.-
We reported a new one-pot method to synthesize Cu incorporated ZSM-5 with ethylene diaminetetraacetic acid copper disodium salt hydrate (EDTA-Cu) as copper source by a hydrothermal process. Theobtained isomorphous substituted Cu-ZSM-5 exhibits more excellent reactivity for selective catalyticreduction of NOx by NH3 with long term stability than their conventional copper impregnatedcounterparts. The results indicate that the tetracoordinated Cu species in the ZSM-5 frameworks havesuperior catalytic properties than the Cu species existed outside the ZSM-5 zeolites frameworks. Thenovel ammonium salt complex method was used for thefirst time to synthesize the metal-ZSM-5 molecular sieves.
High performance phosphorus-modified ZSM-5 zeolite for butene catalytic cracking
Xionghou Gao,Zhicheng Tang,Haitao Zhang,Conghua Liu,Zhongdong Zhang,Gongxuan Lu,Dong Ji 한국화학공학회 2010 Korean Journal of Chemical Engineering Vol.27 No.3
Phosphorus-modified ZSM-5 zeolites were prepared with a novel method, hydrothermal dispersion. XRD showed that the catalysts prepared by the hydrothermal dispersion had better hydrothermal stability than that by impregnation. At the same time, more pronounced cracking activity and higher yield of ethylene plus propylene were obtained on the phosphorus-modified ZSM-5 catalysts prepared by hydrothermal dispersion. Highest yield of ethylene plus propylene was obtained when the loading of phosphorus was 0.68%. The higher amount of phosphorus fixed on the pores of zeolite, higher hydrothermal stability and appropriate acid amount were the possible reasons for obtaining higher yield of ethylene plus propylene.