Synthesis of spherical-like Pt–MCM-41 meso-materials with high catalytic performance for hydrogenation of nitrobenzene

Vapor phase hydrogenation of aqueous levulinic acid over hydroxyapatite supported metal (M = Pd, Pt, Ru, Cu, Ni) catalysts.

“…The BE values of Ni 2p 3/2 and Ni 2p 1/2 peaks are observed around 852.9 and 871.1 eV respectively (Fig. 2d) [38]. Binding energy value of metallic Cu (Fig.…”

Effect of ball milling on the structural and textural features of MCM-41 mesoporous material

“…2. First, a gradual shift of the band from 968 cm e1 to 939 cm e1 appears as a result of an increased the milling time from 0.0 h to 8.0 h. In this context, it was reported that the band at 968 cm e1 is sensitive to the introduction of metal ions into the silica framework of MCM-41 [37]. Du et al [36] reported that this band is a characteristic adsorption peak of MCM-41 material.…”

The hydrogenation of nitroarenes mediated by platinum nanoparticles: an overview

“…33 Different platinum catalysts were prepared, like Pt/Al 2 O 3 , Pt/C and Pt/TiO 2 , using an incipient wetness technique and employing H 2 PtCl 6 as the metal precursor. 34 For the preparation of the catalysts, the authors employed a "one-step methodology" using orthosilicate (TEOS) as the silica source and cetyltrimethylammonium bromide (CTAB) as the template in acid media and using H 2 PtCl 6 as the platinum source. This situation would favor the hydrogenation of the nitro group versus the hydrogenation of double bonds, CO or other functional groups that could be present in the molecule, and, as a consequence, it would improve the selectivity.…”