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- W2350378979 abstract "The hydrocracking of C6~8mixed chain hydrocarbons(mixed hydrocarbons) and o-xylene over HZSM-5 zeolites with different acidity was studied in a fixed-bed down-flow reactor,and the effects of reaction parameters such as temperature,WHSV and H2/CH volume ratio were investigated after the catalyst reached stable performance.Hydrocracking of mixed hydrocarbons was accompanied by aromatization over HZSM-5 zeolite.The hydrocracking was the main reaction with catalyst of weak acid sites,and the hydrocracking products were main normal alkanes,while both methane and isoalkane were pretty low.However,with HZSM-5 zeolite of strong acid sites,the main reaction was aromatization at the beginning.After a certain time,a stable catalytic performance was reached,presenting similar product selectivity to that of weak acidic HZSM-5.The hydrocracking of mixed hydrocarbons displayed obvious temperature effect,while both the WHSV and H2/CH volume ratio had a small effect.At 380 ℃,3.0MPa,WHSV of 1.02 h-1 and H2/CH volume ratio of 1 000,the conversion of mixed hydrocarbons kept above 99% within 100 h,and the stable hydrocracking selectivity was above 95%.o-Xylene hydroconversion was found to be a linear combination of three reactions: hydrocracking,isomerization and disproportionation.Over the strong acidic HZSM-5,the yield of hydrocracking products was higher than that of the weak acidic HZSM-5,and over both HZSM-5 the hydrocracking product distribution was similar to that of mixed hydrocarbon hydrocracking.At 380 ℃,3.0 MPa,WHSV of 1.3 h-1 and H2/CH volume ratio of 1 000,the stable hydrocracking selectivity was less than 10% for o-xylene hydroconversion." @default.
- W2350378979 created "2016-06-24" @default.
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- W2350378979 date "2010-01-01" @default.
- W2350378979 modified "2023-09-23" @default.
- W2350378979 title "Hydrocracking of C_(6～8) mixed chain hydrocarbons and o-xylene over HZSM-5 zeolite" @default.
- W2350378979 hasPublicationYear "2010" @default.
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