Development of a Membrane for Hydrocarbon Dehydrogenation Using High-Temperature Synthesis

Abstract

A porous catalytically active membrane based on α-Al₂O₃ has been synthesized. For the synthesis of the membrane, powdered additives of the eutectic composition of magnesium oxide and silicon carbide were introduced into the initial Al₂O₃ powder using compression at pressures of 30 to 90 MPa and sintering at 1350°C. To impart catalytic properties to the synthesized membrane, up to 10% Fe₂O₃–Cr₂O₃ was added to the mixture. Dehydrogenation of butylene to butadiene on an α-Al₂O₃-based membrane with selective removal of hydrogen from the reaction zone increased the rate of production of 1,3-butadiene from 16.5 to 20.6 L/(hr·g_act.comp), with the degree of extraction of ultrapure hydrogen reaching ~15%.