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Updated: Nov 15, 2025
Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
Insights into the electronic and redox behavior of surface-phosphated ceria catalysts in correlation with their
Ionel Popescu1, Ioan-Cezar Marcu2
1Research Center for Catalysts and Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12, Blv. Regina Elisabeta, 030018 Bucharest, Romania. ioancezar.marcu@chimie.unibuc.ro ioancezar_marcu@yahoo.com.
Abstract:
In situ electrical conductivity measurements (ECMs) have been employed to gain insights into the redox and electronic behavior of ceria and surface-phosphated ceria catalysts with phosphorus contents lower than 2.2 at%. Temperature-programmed reduction under hydrogen (H2-TPR) was used to analyze the reducibility of the catalysts. Their propane oxydehydrogenation performance both in terms of activity and selectivity has been explained. It has been unambiguously shown that all the catalysts function via a heterogeneous redox mechanism involving only surface and subsurface lattice oxygen species whose availability and reactivity decrease with increasing phosphorus content with consequences on the catalytic performance.
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