A process is disclosed for converting a hydrocarbon reactant to a product comprising CO
and H 2. The process comprises:(A) flowing a reactant composition comprising the
hydrocarbon reactant and oxygen or a source of oxygen through a microchannel reactor in
contact with a catalyst under reaction conditions to form the product, the microchannel
reactor comprising at least one process microchannel with the catalyst positioned within the
process microchannel, the hydrocarbon reactant comprising methane, the contact time for …