András Tompos

TL;DR: In this paper, it was established that in sequential reactions the catalyst was deactivated due to graphite-like carbon deposit measured by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) while by Xray photoelectron spectroscopy (XPS) only Ni-carbide was observed.

TL;DR: Silica-supported catalysts, prepared by controlled surface reactions between hydrogen adsorbed on platinum and tin tetraethyl, showed high activity and selectivity in the gas phase hydrogenation of crotonaldehyde to crotyl alcohol.

TL;DR: In this paper, a mechanism for co-operation of the defect sites of the electron-rich support and the metallic particles is proposed for facilitating initial steps of ethanol reforming leading to acetaldehyde while the higher number of metallic Ni species (prevailing to oxidized forms) accelerates direct steam reforming of acetaldehyde.

TL;DR: In this paper, it was suggested that reaction induced selectivity improvement observed in the hydrogenation of crotyl alcohol over Sn-Pt/SiO2 catalysts is related to the formation and stabilization of ionic forms of tin in the atomic closeness to the platinum.

TL;DR: In this article, a novel synthesis method for the preparation of silica supported nanosized gold catalysts using HAuCl 4 gold precursor and ammonia solution was reported, which resulted in highly dispersed gold particles on silica with high catalytic activity in carbon monoxide oxidation.