Supported catalysts for converting methane or purified natural gas, preparation thereof, and process for preparation of ethylene using said catalysts

摘要

Supported catalysts of the following formula (I) for preparing ethylene by conversion of methane or purified natural gas and preparation thereof, and process for preparation of ethylene by direct conversion of methane or purified natural gas using said catalysts:PP Ma'/S formula (I)P P(wherein, M is a compound selected from the group of RuCl.sub.2 (PPh. sub.3).sub.3, RuCl.sub.2 (CO).sub.2 (PPh.sub.3).sub.2, Ru.sub.3 (CO).sub. 12, RhCl(CO)(PPh.sub.3).sub.2, IrCl(CO)(PPh.sub.3).sub.2, Pd(PPh.sub.3). sub.4, Pt(PPh.sub.3).sub.4, RuCl.sub.3 ·xH.sub.2 O, RhCl.sub.3 . multidot.xH.sub.2 O, IrCl. sub.3 ·xH.sub.2 O, PdCl.sub.2 . multidot.xH.sub.2 O, H.sub.2 PtCl. sub.6 ·xH.sub.2 O, S is an inorganic carrier selected from . alpha. -Al.sub.2 O.sub.3, &ggr;-Al.sub. 2 O.sub.3, SiO.sub.2, SiO.sub.2 - -Al. sub.2 O.sub.3, Y-zeolite, MgO and TiO.sub.2, a' is weight percentage of metal in catalyst, ranging from 0. 25 to 5 wt %.)