The synthesis of Mo/H-MCM-36 catalyst and its catalytic behavior in methane non-oxidative aromatization

MCM-36 was synthesized by swelling and pillaring the layered MCM-22 precursor and its physical and acidic properties were characterized by XRD, TEM, BET and IR spectroscopy of d(3)-acetonitrile adsorption. Mo/H-MCM-36 catalyst was prepared with MoO3 and H-MCM-36, and its catalytic behavior in methane non-oxidative aromatization was studied comparing with Mo/H-MCM-22 catalyst. It was found that in the initial period of reaction Mo/H-MCM-36 exhibited a relative high conversion of CH4 and selectivity of CO. Then it showed a low conversion of CH4 and high formation rate of coke. We supposed that the different pore structure, acidity and Mo dispersion of the two catalysts were responsible for their different catalytic behaviors. (C) 2005 Elsevier B.V. All rights reserved.