PROMOTIONAL EFFECT OF PT ON NONOXIDATIVE METHANE TRANSFORMATION OVER MO-HZSM-5 CATALYST

The influence of modification of Mo-HZSM-5 catalyst by Pt on methane n on-oxidative transformation to ethylene and aromatics is investigated. Carbon accumulation on the catalyst is studied by means of DTA and TG methods. It is demonstrated that the addition of Pt to Mo-HZSM-5 cons iderably enhances the catalyst stability and reduces the carbon deposi tion on the catalyst. In the meanwhile, Mo-HZSM-5 is shown not to be a good catalyst for methane non-oxidative conversion because the total efficiency for methane conversion to useful products is even lower tha n it is in the oxidative coupling process.