two new heterogenized epoxidation nanocatalysts based on molybdenum and tungsten compounds were prepared withcovalent grafting of mcm-41 with 3-aminoropropyl trimethoxysilane and subsequent reaction with diphenylphosphinobenzaldehyde and complexation with m (mo, w)o2(acac)2. x-ray diffraction and nitrogen sorption analyses revealed the preservation of the textural properties of the support as w...

Understanding the interface between soluble metal complexes and supported particles is important in order to reveal reaction mechanisms a new generation of highly active homogeneous transition catalysts. In this study, we show that, case palladium forming on carbon (Pd/C) catalyst from Pd(0) complex Pd2dba3, nature deposited surface turns out be much richer than previously assumed, even if very...

This work reports a straightforward and high-yielding synthesis of alkyl levulinates (ALs), class promising biofuel, renewable solvent, chemical feedstock origin. ALs were prepared by the acid-catalyzed esterification levulinic acid (LA) alcoholysis carbohydrate-derived platforms, such as furfuryl alcohol (FAL) α-angelica lactone (α-AGL). Phosphotungstic (PTA) was chosen solid catalyst for tran...

Electrolytic and solar-driven reduction of CO2 to CO using heterogenized molecular catalysts are promising approaches toward the production a key chemical feedstock, as well mitigating emissions. Here, we report cobalt phthalocyanine catalyst bearing four phosphonic acid anchoring groups (CoPcP) that can be immobilized on metal oxide electrodes. A hybrid electrode with CoPcP mesoporous TiO2 (me...

Oxovanadium(IV), manganese(II) and copper(II) complexes of a Schiff base ligand derived from 2,4-dihydroxyacetophenone and 1,2-diaminocyclohexane have been encapsulated in the nanocavity of zeolite-Y by flexible ligand method and characterized by metal analysis, IR spectroscopic studies and X-ray diffraction patterns. The encapsulated complexes abbreviated here as CuL-Y, MnL-Y and VOL-Y catalyz...

Highly effective ammonia borane dehydrogenation was carried out using a heterogenized ruthenium-CAAC complex in water.

Transition-metal-based molecular complexes are a class of catalyst materials for electrochemical CO2 reduction to CO that can be rationally designed to deliver high catalytic performance. One common mechanistic feature of these electrocatalysts developed thus far is an electrogenerated reduced metal center associated with catalytic CO2 reduction. Here we report a heterogenized zinc-porphyrin co...

A biomimetic model complex of the [FeFe]-hydrogenase active site (FeFeOH) with an ethylene bridge and a pendant hydroxyl group has been synthesized, characterized evaluated as catalyst for light-driven hydrogen production. The interaction present in 3-isocyanopropyltriethoxysilane provided carbamate triethoxysilane bearing diiron dithiolate (NCOFeFe), thus becoming potentially promising candida...