The effect of TCE addition on the performance of catalytic isomerization of n-hexane

Abstract EN

n-Hexane conversion enhancement was studied by adding TCE (Trichloro-ethylene) on feed stream using 0.

3 %Pt / HY zeolite catalyst.

All experiments were achieved at atmospheric pressure and on a continuous laboratory unit with a fixed bed reactor at a temperature range 240-270◦C, LHSV 1-3h-1, H2 / nC6 mole ratio 1-4.

By adding 435 ppm of TCE, 49.

5 mole % conversion was achieved at LHSV 1h-1, temperature of 270ºC and H2/nC6 mole ratio of 4, while the conversion was 18.3 mol % on the same catalyst without adding TCE at the same conditions.

The activation energy decreased from 98.

18 for pure Pt / HY zeolite to 82.83 kJ/mole by adding TCE.

Beside enhancement the activity, selectivity and product distribution enhanced by providing DMB (Dimethyl butane) which have higher octane number as compared with 0.

3 %Pt / HY zeolite.

Indeed the increase of the 2.

2-DMB / 2, 3DMB ratio with n-hexane conversion is more pronounced with TCE than with pure Pt / HY zeolite.