Oxidative CO2 dehydrogenation of butane on microspherical zeolite-containing composites based on kaolin

In the present work, zeolite-containing microspherical composites based on kaolin were synthesized and modified with ammonium, lanthanum, and zirconium compounds. The modified composites were dealuminated by thermal steaming. The physicochemical properties of the obtained materials were studied using low-temperature nitrogen adsorption/desorption, FTIR spectroscopy and thermally programmed ammonia desorption. Samples of the microspherical composites of different composition were tested in the reaction of oxidative dehydrogenation of butane with the participation of CO2. The effect of a number of factors on the characteristics of the synthesized samples and the related changes in their activity and selectivity was analyzed. The results of the work showed the possibility of using zeolite-containing microspherical composites modified with La or Zr as catalysts for this reaction.