TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Catalyst: The catalyst assembly is fixed on the interior surface of a reactor to carry out the reaction of a natural gas using oxygen separated from the circulating air current found on the external surface of the reactor by electrochemical reaction through the ceramic membrane of the reactor. Preferred Process: The process further comprises de-agglomerating the suspension before the application step, drying the deposit before the heating step or drying the suspension to eliminate the solvent and to obtain a powder comprising anchorage oxide and optional additives, mixing the powder with the precursor solution to obtain a suspension, drying the obtained suspension till the solvent eliminated, heating mixture at 200-900degreesC to obtain a powder of impregnated anchorage oxide of (I), preparing a suspension of the obtained powder in a solvent, applying the suspension on the support surface to form a deposit of the impregnated anchorage oxide and heating the impregnated anchorage oxide at 200-1200degreesC to obtain the impregnated anchorage oxide of (I). Preferred Components: (I) is platinum, palladium, rhodium, iridium, cobalt, nickel or its alloys. The anchorage oxide is boron oxide, aluminum oxide, gallium oxide, cerium oxide, silicon oxide, titanium oxide, zirconium oxide, zinc oxide, magnesium oxide, calcium oxide, mixed metal oxides of alkaline-earth metal, magnesium silicate and/or aluminum silicate, calcium phosphates or their derivatives, doped ceramic oxides used at a temperature that creates a crystal lattice having gaps in ions oxides, particularly in the form of cubic, fluorite, perovskite, aurivillius, brownmillerite or pyrochlore phase, gadolinium oxide, yttrium oxide, cerium oxide, mixed oxides of aluminum and strontium, mixed oxides of gadolinium and cerium, mixed oxides of titanium and barium, mixed oxides of titanium and calcium, mullite, cordierite, magnesium aluminum oxide spinel phase, calcium hydroxy apatite, calcium phosphate, nickel oxide or lanthanum oxide, preferably doped ceramic oxides of formula (MaOb)1-x(RcOd)x, preferably (ZrO2)1-x(Y2O3)x (where x is 0.05-0.15), Ce1-xGdx02-delta (where x is 0.01-0.5), Ce1-xZrxO2 (where x is 0.5-0.75), perovskite of formula (Ma1-x1Mbx1)(Mc1-yMdy)O3-w preferably The anchorage oxide is calcium lanthanum manganite of formula CauLavMnO3-w, lanthanum strontium manganite of formula LauSrvMnO3-w, lanthanum strontium cobaltite of formula LauSrvCoO3-w, calcium lanthanum cobaltite of formula CauLavCoO3-w, gadolinium strontium cobaltite of formula GduSryCoO3-w, lanthanum strontium chromite of formula LauSrvCrO3-w, lanthanum strontium ferrite of formula LauSrvFeO3-w, transition metal doped lanthanum strontium ferrite of formula LauSrvFecMddO3-w. The lanthanum strontium ferrite is lanthanum strontium ferrocobaltite of formula LauSrvCodFecO3-w e.g., La(0.6)Sr(0.4)Co(0.8)Fe(0.2)O3-w, lanthanum strontium ferrotitanium oxide of formula La(0.5)Sr(0.5)Fe(0.9)Ti(0.1)O3-w or La(0.6)Sr(0.4)Fe(0.9)Ti(0.1)O3-w, lanthanum strontium ferrogallium oxide of formula La(0.6)Sr(0.4)Fe(0.9)Ga(0.1)O3-w or La(0.5)Sr(0.5)Fe(0.9)Ga(0.1)O3-w. The support is made of platinum, palladium, rhodium, iridium, cobalt, nickel or its alloys. The anchorage oxide is boron oxide, aluminum oxide, gallium oxide, cerium oxide, silicon oxide, titanium oxide, zirconium oxide, zinc oxide, magnesium oxide, calcium oxide, mixed metal oxides of alkaline-earth metal, magnesium silicate and/or aluminum silicate, calcium phosphates or their derivatives or nickel-chromium alloy.M = tri- or tetravalent atom e.g., Bi, Ce, Zr, Ce, Th, Ga or Hf;a-d = number to maintain electrical neutrality;R = di or trivalent atom e.g., Mg, Ca, Ba, Sr, Gd, Sc, Yb, Y, Sm, Er, In, Nb or La;x = 0.05-0.30, preferably 0.075-0.15;Ma, Mb = alkaline earth metal, lanthanides or actinides, preferably La, Ce Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Mg, Ca, Sr or Ba;Mc, Md = transition metal, preferably Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn or Ga;x1, y = 0-1; andw = a number to maintain electrical neutrality.Provided that the sum of the u and v, and the sum of c and d are 1. EXAMPLE - No suitable example given.