Synthesis of NiAPSO-34 catalysts containing a larger concentration of Ni and effect of its sulfidation on methanol conversion

In order to obtain the NiAPSO-34 crystal containing a larger concentration of nickel, the nickel formate was used as the nickel source. It was confirmed that not only the amount of incorporated nickel into the framework but also the amount of the non-incorporated nickel increased, and in consequence, it involved methanation activity. To retard the methanation activity, sulfidation of the Ni non-incorporated was tried. In the case of H2S addition, methane formation suppressed markedly and selectivity to ethylene increased. (C) 1999 Elsevier Science B.V. All rights reserved.