Brera 1 , Beatriz Zeifert two , Tamara V quez 2 , JosSalmones two and Miguel Angel Guti rez-LimDepartment of Power, CBI, Metropolitan Autonomous University-Azcapotzalco, Av. San Pablo 180, Col. Reynosa, M ico City C.P. 02200, Mexico; [email protected] (A.P.-G.); [email protected] (J.P.-C.); [email protected] (M.A.G.-L.) Division of Engineering in Metallurgy and Materials, ESIQIE, National Polytechnic Institute, Av. IPN Col. Lindavista, Mexico City C.P. 07738, Mexico; [email protected] (B.Z.); [email protected] (T.V.); [email protected] (J.S.) Correspondence: [email protected]; Tel.: +52-1-Citation: Pallares-Garc , A.; Contreras, J.L.; P ez-Cabrera, J.; Zeifert, B.; V quez, T.; Salmones, J.; Guti rez-Lim , M.A. Stabilization of Pt in SiO2 l2 O3 Microspheres at Higher Mechanical Resistance, Promoted with W Oxides for the Combustion of CO. Catalysts 2021, 11, 1320. catal11111320 Academic Editor: Vincenzo Vaiano Received: 16 August 2021 Accepted: 28 October 2021 Published: 30 OctoberAbstract: This study shows the development of a combustion promoter for the oil-refining process Polmacoxib Epigenetic Reader Domain called fluid catalytic cracking (FCC). The investigation of a catalyst prepared for the combustion of CO composed of 0.05 wt Pt supported on SiO2 l2 O3 .5 wt W microspheres with high mechanical resistance, promoted with tungsten oxides (WOx) that can inhibit the sintering of Pt, is reported. The addition of WOx in SiO2 l2 O3 inhibited the lower inside the certain region when calcined from 550 C to 950 C. SiO2 l2 O3 help within the kind of calcined microspheres with average diameters involving 7005 were created by spray drying, using two atomization discs with vanes of different geometry: a straight rectangular blade disc (DAR) in addition to a curved rectangular vanes disc (DAC). The DAR disk created whole microspheres, when the DAC had hollow and broken microspheres. The microspheres had been characterized by XRD, SEM, optical microscopy, N2 physisorption (BET region) and fracture resistance tests. The Pt catalysts have been evaluated by TPR, H2 chemisorption and CO combustion. The catalyst of 0.05 wt Pt/SiO2 l2 O3 .five wt turned out to become probably the most stable. A thermal stabilization impact was observed at contents reduced than 1 wt W that permitted it to inhibit the sintering from the Pt catalyst. Keyword phrases: CO combustion promoter; Pt/SiO2 l2 O3 Ox catalyst; spherical ��-Galactosylceramide manufacturer particles; spray drying; rotary atomizer disks1. Introduction Most fluid catalytic cracking (FCC) units within the oil sector have introduced additives that boost the efficiency of your cracking catalyst. The main added benefits of adding additives in FCC units are to improve unit overall performance and minimize the quantity of polluting gases emitted by the regenerator into the atmosphere [1]. In particular, the CO combustion promoter additive is added to the inventory from the cracking catalyst or inside the regenerator from the FCC unit to catalyze the oxidation reaction of CO to CO2 into the dense phase from the regenerator, decreasing the high residual concentration of CO in the flue gas released by the regenerator [61]. This additive contributes for the regeneration from the cracking catalyst contaminated with coke by way of a far more effective and uniform burning, facilitating fluidization from the cracking catalyst and controlling post-combustion challenges that take location in the diluted phase on the regenerator [124]. Industrial CO combustion promoters are produced up of attrition-resistant fluidizable spherical p.