Characterization and Behaviour of Pt Catalysts Supported on Basic Materials in Dry Reforming of Methane

ADRIANA D. BALLARINI; CESARIO DAS VIRGENS; MARIA DO CARMO RANGEL; SERGIO DE MIGUEL; JAVIER M. GRAU

BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING

BRAZILIAN SOC CHEMICAL ENG

Lugar: BRASIL; Año: 2019 vol. 36 p. 275 - 284

0104-6632

Different basic materials, such as K-L zeolite, K-Al2O3, K-Mg/Al mixed oxide and MgO, were used as supports of Pt-catalysts for dry reforming of methane (DR) reaction. Platinum acetylacetonate (II) was used as a metallic precursor. The effects of the distribution of basic strength in the support on the metal-support properties and catalyst performance were evaluated. The density of strong basic sites decreased as follows: MgO>K(Mg-Al) >K-Al2O3>K-L. Pt catalysts supported on materials of high density of strong basic sites as a catalytic support, was the most adequate for this reforming reaction. The better catalytic behaviour of Pt/MgO catalyst would be related with the good interaction between the metallic phase and the most basic support. The methane conversion and the H2/CO ratios obtained by DR reaction correlate quite well with the basicity of the different catalysts. Aceptado 12-May-2018