Journal of Physical Chemistry C
Journal of Physical Chemistry C
5 years ago

A Combined Theoretical and Experimental Approach for Platinum Catalyzed 1,2-Propanediol Aqueous Phase Reforming

A Combined Theoretical and Experimental Approach for Platinum Catalyzed 1,2-Propanediol Aqueous Phase Reforming
Remedios Cortese, Dario Duca, Roberto Schimmenti, Antonio Prestianni, Lidia Godina, Dmitry Yu. Murzin, Francesco Ferrante
Decomposition pathways of 1,2-propanediol (1,2-PDO) on platinum were investigated by means of experiments and quantum-mechanical calculations. Different reaction paths on a Pt(111) model surface were computationally screened. Gas and liquid phase products distribution for aqueous phase reforming of 1,2-PDO solutions was experimentally analyzed. A mechanistic approach was used to trace the preferred paths according to calculated activation barriers of the elementary steps; in this way, the presence or absence of some hypothesized intermediates in the experiments was computationally rationalized. Hydroxyacetone was demonstrated to be among the most favored decomposition products. The competition between C–H, O–H, and C–C bond cleavages was investigated, revealing that shortening of the carbon chain occurs most likely via decarbonylation steps.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b03716

DOI: 10.1021/acs.jpcc.7b03716

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