Catalyst and catalytic oxidation-deoxidation method for unsaturated hydrocarbon-containing gas

A catalyst comprising a carrier, as well as an active component, and a first co-agent component and a second co-agent component loaded on the carrier, wherein:

• the active component is one or more selected from the group consisting of oxides of Pt, Pd, Ru, Rh, Ag, and Ir;
• the first co-agent component comprises one or more selected from the group consisting of a rare-earth metal element, a group IVB metal element, and a group VIII metal element;
• and
• the second co-agent component comprises one or more selected from the group consisting of an alkali metal element and an alkaline-earth metal element;
• along a radial direction from a core of the carrier to an outer surface of the carrier, the content of said active component increases to a first peak value and then decreases to form a peak shape distribution, the content of said first co-agent component increases to a second peak value and then decreases to form a peak shape distribution, the content of said second co-agent component increases, and the first peak value is 0.2 wt % or more;
• and
• said active component is present in an amount of 0.05-2 wt % in terms of the metallic element, said first co-agent component is present in an amount of 0.1-3 wt % in terms of oxides thereof, and said second co-agent component is present in an amount of 1-7 wt % in terms of oxides thereof, based on the dry weight of the catalyst.