Ethane dehydrogenation over CaCO₃-mediated tandem catalysts.

ABSTRACT: CO₂-assisted oxidative dehydrogenation of light alkane is a promising and innovative technology for light olefin production; however, the interference of side reactions and sluggish reactivity of CO₂ limit olefin yields. This paper describes an economically viable tandem catalytic system by coupling alkane dehydrogenation and the reverse water gas shift (RWGS) reaction, employing PtSn/SiO₂ as ethane dehydrogenation (EDH) sites and nano-CaCO₃ as the hydrogen acceptor for sequent RWGS. This tandem catalytic system significantly surpasses commercial CrO_x- and Pt-based catalytic systems, and breaks the EDH thermodynamic equilibrium limitation, reaching 142% of the nominal equilibrium ethylene yield of non-oxidative EDH process with 96.7% s

SUBMITTER: Wu Z 

PROVIDER: S-EPMC12365043 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature