| http://www.w3.org/ns/prov#value | - The tests were conducted in a quartz fixed-bed microreactor with a diameter of 4 mm, containing 500 mg of catalysts in granules with particle sizesfrom 20 to 30 mesh.The catalyst was a composite material constituted by an inert porous substrate (Al.sub.2 O.sub.3) containing 7.5% by weight of active compound (38 mg).Methane and air were fed to the reactor so that the concentration of methane in the
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