[2B18-2B21] Hydrogenation/dehydrogenation (2)

[2B21] Promoted propane dehydrogenation over Co-confined core-shell silicalite-1 zeolite crystals

○Shohei Kubota¹, Koji Miyake¹, Yoshiaki Uchida¹, Norikazu Nishiyama¹ (1. Osaka University)

Keywords:propane dehydrogenation, zeolite, sintering

Propylene is one of the most valuable light olefins in the petrochemical industry. Catalytic propane dehydrogenation (PDH) is an attractive process that can meet the growing demand of propylene. Among the extensively studied PDH catalysts, Co-based catalysts are considered especially promising. However, Co-based catalysts are often degraded by the aggregation of Co species and formation of carbon nanotubes. To overcome these drawbacks, we prepared Co-confined core-shell silicalite-1 zeolite crystals by coating Co-loaded silicalite-1 with silicalite-1 layers. We confirmed that the silicalite-1 shell layers suppressed the formation of aggregated Co nanoparticles and carbon nanotubes during the PDH reaction, leading to improved catalytic performance