Pt-Co and Pt-Ni Catalysts of Low Metal Content for H 2 Production by Reforming of Oxygenated Hydrocarbons and Comparison with Reported Pt-Based Catalysts

DOSSO, LIZA A.; CARLOS R. VERA; GRAU, JAVIER M.

International Journal of Chemical Engineering

Hindawi

Lugar: Cairo; Año: 2018

1687-806X

New catalysts of Pt,PtNi, PtCo, and NiCo supported on Al 2 O 3 were developed forproducing hydrogen by aqueous phase reforming (APR) of oxygenatedhydrocarbons. In order to improve the metal-support interaction, themetal load should be decreased and the metal dispersion should beincrease, and the urea matrix combustion technique (UMC) was used forloading the metal on the support. The catalysts were characterized byMS/ICP, N 2 adsorption, XRD, TPR, CO chemisorption, and the test ofcyclohexane dehydrogenation (CHD). The APR of a solution of 10% massethylene glycol (EG), performed in a tubular fixed bed reactor at 498K, 22 bar, WHSV = 2.3 h −1 , was used as the main reaction test.After 10 h on-stream, the catalysts prepared by UMC had betterhydrogen yield and catalytic stability than common catalysts preparedby IWI. The UMC/IWI H 2 yield ratio was 23.5/15.2 for Pt, 24.0/17.0for PtCo, 26.6/21.0 for PtNi, and 8.0/3.9 for NiCo. Ni or Co additionto Pt increased the carbon conversion while keeping the H 2 turnoverhigh. Cobalt also improves stability. Reports of several authors wererevised for a comparison. The analysis indicated that the developedcatalysts are a viable and cheaper alternative for H 2 productionfrom a renewable resource.p { margin-bottom: 0.1in; line-height: 115%; }