Methods for making light olefins by dehydrogenation that utilize comubustion additives that include transition metals

A method for making light olefins by dehydrogenation, the method comprising:

• operating a catalytic dehydrogenation process, the operating comprising:
• contacting a hydrocarbon-containing feed with a catalyst in a reactor to form an olefin-containing effluent;
• at least partially separating the olefin-containing effluent from the catalyst;
• passing the catalyst to a combustor and heating the catalyst by combusting a supplemental fuel, wherein the supplemental fuel comprises methane in an amount of greater than or equal to 1 mol. %;
• passing the catalyst from the combustor to the reactor, such that at least a portion of the catalyst continuously cycles between the reactor and the combustor;
• monitoring a composition of a combustion gas in the combustor to detect a concentration of one or more hydrocarbons;
• and
• selectively adding a combustion additive with the catalyst when the combustion gas comprises one or more hydrocarbons in an amount greater than 5% of a lower flammability level of the combustion gas at a temperature and pressure of the combustor, wherein a Jet cup attrition index of the combustion additive is greater than a Jet cup attrition index of the catalyst, where the Jet cup attrition is measured with 45 μm threshold after 6 hours at ambient temperature, 300 ft/s jet velocity, a flow rate of 98 L/min, and a sample loading of 100 grams, and wherein the combustion additive comprises:
• from 1 wt. % to 10 wt. % of one or more of tin or transition metals exclusive of gallium and noble metals;
• from 0 parts per million by weight (ppmw) to 100 ppmw of gallium and noble metals;
• and
• at least 85 wt. % support.