The role of pentacoordinate Al³⁺ sites of Pt/Al₂O₃ catalysts in propane dehydrogenation.

ABSTRACT: Pentacoordinate Al³⁺ (Al³⁺ _penta) sites on alumina (Al₂O₃) could anchor and stabilize the active site over the catalyst surface. The paper describes the specific effect of Al³⁺ _penta sites on the structure and the catalytic performance of Al₂O₃ supported Pt catalysts by modulating the quantity of Al³⁺ _penta sites. The Al³⁺ _penta site content of Al₂O₃ exhibits a volcano-type profile as a function of calcination temperature due to the structural rearrangement. The loading of Pt and subsequent calcination can consume a significant portion of Al³⁺ _penta sites over the Al₂O₃ support. We fu

SUBMITTER: Wang Y 

PROVIDER: S-EPMC11670724 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature