Business is boehming: Boehmite-supported platinum nanoparticles and tungsten oxides exhibit high catalytic activity towards the selective hydrogenolysis of glycerol to 1,3-propanediol. The reaction furthermore proceeds efficiently in aqueous solution without requirement for any additives. This solid catalyst also demonstrates excellent durability, maintaining selectivity during recycling experiments. As a service our authors readers, this journal provides supporting information supplied by...

Abstract An efficient and simple process for the preparation of stable nanocopper(0) on alumina [Cu(0)/Al 2 O 3 ] from inorganic composite precursor copper aluminum hydrotalcite (Cu‐Al HT) by a chemical reduction method is described. Cu(0)/Al was employed as an catalyst in acceptor‐ oxidant‐free dehydrogenation various amines alcohols to their corresponding dehydrogenated products good excellent yields. The stability assessed studying its recoverability reusability up five cycles. magnified image

Abstract Copper‐aluminium hydrotalcite (CuAl‐HT)/K 2 CO 3 has been employed in the activation of various benzyl alcohols with benzylamines to afford corresponding amines good high yields. Experimentation showed that reaction takes place through sequential transformations: oxidation into carbonyl compounds, imine formation between and then reduction ofimines amines, heterogeneously catalyzed by non‐noble Cu‐Al HT catalyst a one‐pot straightforward fashion. The process was further extended...

Employing CuI nanoparticles as an efficient catalyst for the cross-coupling reactions of various N/O nucleophilic reagents with aryl chlorides could be successfully carried out under mild conditions in absence both ligands and strong bases. A variety products including N-arylimidazoles ethers were synthesized good to excellent yields.

Abstract A high surface, magnetic Fe 3 O 4 @mesoporouspolyaniline core‐shell nanocomposite was synthesized from iron oxide (Fe ) nanoparticles and mesoporouspolyaniline (mPANI). The novel porous obtained by solvothermal method under sealed pressure reactor at temperature to achieve surface area. shell in situ polymerization onto the presence of polyvinylpyrrolidone (PVP) sodium dodecylbenzenesulfonate (SDBS), as a linker structure‐directing agent, through ‘blackberry nanostructures’...

Abstract Tungsten oxide-supported platinum nanoparticles containing aluminum oxide species (Pt–AlOx/WO3) act as a highly efficient heterogeneous catalyst for the hydrogenolysis of glycerol to 1,3-propanediol without any additives. High selectivity was observed due concerted effect Pt nanoparticles, oxide, and tungsten support. The Pt–AlOx/WO3 is reusable with maintaining its high catalytic performance.

Abstract Nanocrystalline magnesium oxide‐stabilized palladium(0) [NAP‐Mg‐Pd(0)], as an efficient catalytic system has been employed for the selective oxidation of alcohols using atmospheric oxygen a green oxidant at room temperature. Various could be transformed into their corresponding aldehydes or ketones in good to excellent yields set optimal conditions. NanoActive™ Magnesium Oxide Plus, [NAP‐MgO] with its three‐dimensional structure and well‐defined shape acts support well dispersed...

2-Substituted benzimidazoles from<italic>o</italic>-diaminobenzenes and aldehydes using CuI nanoparticles as a heterogeneous nano-catalyst O₂as an oxidant were synthesised in excellent yields.

A high surface area mPANI/pFe3O4 nanocomposite from mesoporous polyaniline and porous magnetic Fe3O4 was used as a catalyst in the S-arylation of thiophenol with aryl chlorides C–S bond formation between iodides thiourea water. The mesoporosity enhances efficiency stability nanoparticles both coupling reactions. can be recovered an external magnet reused several times due to superparamagnetic nature nanoparticles.

The C–N cross coupling reaction of aryl chlorides with various alkyl/aryl amines catalyzed by copper nanoparticles impregnated on alumina/silica support (Cu(0)@Al₂O₃/SiO₂) was investigated and the catalyst showed excellent reactivity efficacy.

Abstract Cobalt oxide nanoparticles (size 2 to 3.5 nm) were successfully impregnated on an alumina–silica (mixed oxide) support through experimentally viable and easily reproducible protocol. The prepared material was well characterized by XRD, HR‐TEM, BET surface area, EDX XPS analyses. Porous having a high area served as protective heterogeneous which the well‐dispersed Co 3 O 4 active catalytic species for hydrazine‐mediated transfer hydrogenation of nitroarenes. About mol % catalyst in...

The highly efficient and selective transformations of glycerol to valuable compounds using reusable heterogeneous catalysts are demonstrated. Lanthanum cation-exchanged montmorillonite shows high activity for the synthesis diacetylglycerols through acetylation with acetic acid. Furthermore, obtained can be subsequently oxidized into 1,3-diacetoxyacetone under air an AlOx-embedded copper nanoparticle catalyst.

Abstract A simple one‐step approach for the preparation of highly monodispersed nano copper(0) stabilized on alumina [Cu(0)/Al 2 O 3 ] by thermal reduction copper‐aluminium hydrotalcite (Cu‐Al HT) under a hydrogen atmosphere is described. The transformation Cu‐Al HT to Cu(0)/Al occurrs via dehydroxylation divalent and trivalent metal hydroxides decarboxylation carbonate anions present in interlayers hydrotalcite, as confirmed XPS, XANES, XRD TEM analysis. composites were used an efficient...

Abstract An efficient catalyst system consisting of copper‐aluminum hydrotalcite/ rac‐ BINOL ligand has been developed for the oxidation alcohols using air as a green oxidant at room temperature. Various could be transformed into their corresponding aldehydes or ketones in good to excellent yields set optimal conditions. This composite catalytic can also recovered and reused several cycles without significant loss activity.

Abstract The copper nanoparticle catalyst prepared from Cu–Al hydrotalcite gives an excellent yield of 1,2-propanediol in the hydrogenolysis glycerol. also exhibits high durability against sintering during reaction and can be reused without appreciable loss activity or selectivity.

Abstract Highly active cobalt oxide nanoparticles supported on alumina/silica (Co 3 O 4 @Al 2 /SiO ) were prepared by wet impregnation method and successfully employed for the solvent free (neat) oxidative coupling of benzyl alcohols/amines with o ‐phenylenediamines synthesis 2‐substituted benzimidazoles. The catalyst during this study was characterized various techniques like XRD, XPS, HR‐TEM, SEM‐EDAX, BET surface area ICP‐AES analysis. Porous (99:1) having high served as a protective...

Abstract Polyaniline nanofiber as a macroligand for the supportedcuprous iodide catalyst (CuI‐PANInf) has been developed coupling of aryl halides (including chlorides) with aliphatic, aromatic, and N(H)‐heterocyclic amines under ambient conditions (80 °C developed. This simple efficient method reactions is highly versatile, convenient, also can be used several cycles good‐to‐excellent yields.

Chemo- and regioselective hydrogenation of a wide range nitro compounds has been achieved with polysiloxane-stabilised ''Pd'' nanoparticles PMHS in water.