Chemistry and Technology of Fuels and Oils, Vol.55, No.1, 1-8, 2019
CATALYTIC ACTIVITY OF AN Al-CI-RE SYSTEM FOR n-HEXANE CRACKING
End products of n-hexane cracking in a displacement fixed-bed catalytic reactor (Pt + Re + In + Ti)/gamma-Al2O3 with specific surface area 193 m(2)/g were investigated. The catalytic system was crystalline gamma-Al2O3 with lattice constants 8 angstrom and average crystallite size 4.8 nm. The degree of conversion of n-hexane doubled and the selectivity for methyl-substituted benzene increased by 33.2% as the temperature was increased from 400 to 450 degrees C. The amount of carbonaceous reaction products was unaffected by the increased process temperature although the yield of gaseous products increased significantly. The isobutane content in n-hexane catalytic cracking gases exceeded 30 vol.%. The elemental and phase compositions of the catalytic system did not change during the experiment.