Cu(II) and Mn(II) Anchored on Functionalized Mesoporous Silica with Schiff Bases: Effects of Supports and Metal-Ligand Interactions on Catalytic Activity.

New series of Cu(II) and Mn(II) complexes with Schiff base ligands derived from 2-furylmethylketone (Met), 2-furaldehyde (Fur), and 2-hydroxyacetopheneone (Hyd) have been synthesized in situ on SBA-15-NH, MCM-48-NH, and MCM-41-NH functionalized supports. The hybrid materials were characterized by X-ray diffraction, nitrogen adsorption-desorption, SEM and TEM microscopy, TG analysis, and AAS, FTIR, EPR, and XPS spectroscopies. Catalytic performances were tested in oxidation with the hydrogen peroxide of cyclohexene and of different aromatic and aliphatic alcohols (benzyl alcohol, 2-methylpropan-1-ol, and 1-buten-3-ol).

Variation in Metal-Support Interaction with TiO Loading and Synthesis Conditions for Pt-Ti/SBA-15 Active Catalysts in Methane Combustion.

The control of catalytic performance using synthesis conditions is one of the main goals of catalytic research. Two series of Pt-Ti/SBA-15 catalysts with different TiO percentages ( = 1, 5, 10, 30 wt.%) were obtained from tetrabutylorthotitanate (TBOT) and peroxotitanate (PT), as titania precursors and Pt impregnation.

Fecal transplantation: digestive and extradigestive clinical applications.

Background And Aim: Fecal transplantation or fecal material transplantation (FMT) became a hot topic in gastroenterology in recent years. Therefore it is important to disseminate the up-to-date information on FMT. The aim of the paper is to review the knowledge on FMT and its clinical applications.

Patterns of alternation in irritable bowel syndrome.

Background And Aims: Irritable bowel syndrome (IBS) is one of the most frequent functional gastrointestinal disorders, having its subtypes related to the predominant bowel pattern: IBS with diarrhea (IBS-D), IBS with constipation (IBS-C), mixed IBS (IBS-M) or alternating IBS (IBS-A). Some patients alternate between subtypes (IBS-A). We looked for the prevalence of alternation between subtypes in patients with IBS.