Inhibiting platinum sintering in direct ethane dehydrogenation and nonoxidative methane activation reactions by sequential sulfide layered chemical vapor deposition
Chemical Engineering Journal, ISSN: 1385-8947, Vol: 488, Page: 151080
2024
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Article Description
Catalysts used in non-oxidative ethane dehydrogenation reactions, particularly Pt-based alumina, are prone to sintering under the reaction conditions. Sintering is the most harmful form of deactivation for these catalysts, as it cannot be reversed, necessitating replacement. A new synthesis technique is employed to create a sulfate layer on and around Pt nanoparticles, followed by a second loading of Pt nanoparticles. This approach aims to prevent sintering during the ethane dehydrogenation reaction. Catalyst synthesized via Sequential Sulfide Layered-Chemical Vapor Deposition (SSL-CVD), exhibits high stability for at least 12 h of the reaction, outperforming the Pt/Al 2 O 3 catalyst used for comparison. Observably, sintering is prevented and is shown to be the reason for the sustained high activity of this material. Non-oxidative methane activation is carried out simultaneously to assist in removing the ethylene product and shifting the equilibrium. The combination of ethane dehydrogenation and methane activation reactions demonstrates the feasibility of direct shale gas utilization.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S1385894724025671; http://dx.doi.org/10.1016/j.cej.2024.151080; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85189937286&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S1385894724025671; https://dx.doi.org/10.1016/j.cej.2024.151080
Elsevier BV
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