STUDY OF HYDROCRACKING OF n-OCTADECANE OVER Pt/SAPO-11 CATALYST

Abstract

Abstract:

The Pt/SAPO-11 catalyst was prepared by incipient-wetness impregnation method and characterized by X-ray diffraction (XRD), BET and NH3-TPD. The effects of Pt loading，reaction temperature，space velocity，reaction pressure and hydrogen-oil ratio on Pt/SAPO-11 were investigated. The result showed that the Pt/SAPO-11 exhibited better catalytic activity with a appropriate increasing of Pt loading，while raising temperature，decreasing space velocity and increasing pressure were favourable for hydrocracking，but higher hydrogen-oil ratio with easier isomerization resulted in a low oil yield. Under the conditions of 0.7% Pt loaded with SAPO-11，temperature of 380 ℃，pressure of 2.5 MPa，LHSV of 1 h-1，hydrogen-oil ratio of 1 000，oil yield had reached 52.2% and the selectivity of mono-branched isomers was 61.6%，along with middle/light distillates ratio of 1.57.

Key words: n-octadecane, hydrocracking, Pt/SAPO-11

References

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