Abstract
The lower alkene production by the gas-phase oxidative cracking (GOC) or catalytic oxidative cracking (COC) of hexane (C6) with added syngas was investigated. The addition of syngas to the COC process could effectively enhance the selectivity to lower alkenes and decrease the selectivity to COx, because of the preferential reaction between O2 with H2 contained in the syngas, whereas it has little effect on the conversion of C6 and product distribution in the GOC process. The high selectivity to lower alkenes of 70% and low selectivity to COx of 6% at C6 conversion of 66% were achieved over 0.1% Pt/MgAl2O4 catalyst. The COC process of C6 combined with the syngas in the feed could directly produce a gas mixture of lower alkenes, H2, and CO, which usually is a suitable feedstock for the hydroformylation process.
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