GRAPHENE AS THE HIGH SPECIFIC HETEROGENEOUS SUPPORT HAS GAINED MORE ATTENTION IN RECENT YEARS AND DUE TO EXTRAORDINARY THERMAL AND MECHANICAL PROPERTIES, AND HIGH STABILITY IN DIFFERENT CONDITIONS ARE IDEAL SUPPORT FOR NOBLE METALS [1, 2].THE HETEROGENEOUS OXIDATION OF ALCOHOLS WITH NOBLE METALS HAS BEEN EXPONENTIALLY IMPROVED SINCE THEIR FIRST REPORT IN 150 YEARS AGO. GOLD WAS THOUGHT TO BE AN INEFFECTIVE NOBLE METAL FOR THE OXIDATION REACTION DUE TO ITS CHEMICAL INERTNESS [3].IN THIS WORK, WE HAVE FOUND SEVERAL IMPORTANT ACHIEVEMENTS; (I) PROVIDING A SUITABLE SUPPORT FOR STABILIZING AND ENCAPSULATING GOLD NANOPARTICLES TO CONTROL THEIR SIZE AND UNIFORM DISTRIBUTIONS BY GRAFTING SUPRAMOLECULAR IONIC LIQUID TO GRAPHENE (II) HAVING A HETEROGENEOUS GRAPHENE BASED CATALYST WITH GOOD DISPERSITY IN WATER AS REACTION SOLVENT AND (III) REMOVING THE NEED FOR AN ADDITIVE BASE BY SYNTHESIS OF A NEW EFFICIENT BIFUNCTIONAL HETEROGENEOUS CATALYST, GOLD NANOPARTICLES AND BASIC CENTERS (IV) DEVELOPING AN EFFICIENT, ENVIRONMENTAL-FRIENDLY AND BENIGN SYNTHETIC PROCESS FOR THE FACILE CONVERSION OF SELECTIVE AEROBIC OXIDATION REACTION OF VARIOUS PRIMARY, SECONDARY AND ALLYL ALCOHOLS INTO THEIR CORRESPONDING ALDEHYDES AND KETONES IN WATER AT ROOM TEMPERATURE WITH EXCELLENT YIELD AND SELECTIVITY. ALSO THE CATALYST HAS GOOD CHEMICAL STABILITY IN THE REACTION MEDIA PROVED BY INVESTIGATING THE RECYCLABILITY OF THE CATALYST.

COMPOUNDS CONTAINING THE KETONE OR ALDEHYDE FUNCTIONAL GROUP ARE IMPORTANT IN ORGANIC CHEMISTRY. THEY ARE COMMON IN NATURE AND ARE OFTEN KEY INTERMEDIATES IN ORGANIC SYNTHESIS [1]. DESPITE NUMEROUS METHODS FOR PREPARATION, THE SINGLE MOST IMPORTANT METHOD FOR PREPARATION OF BOTH KETONES AND ALDEHYDES IS THE OXIDATION OF ALCOHOLS. …

LIGNIN, AN IMPORTANT AROMATIC BIOPOLYMER, IS A MAJOR COMPONENT OF BIOMASS. AS A PROMISING ALTERNATIVE TO FOSSIL RESOURCE1, LIGNIN HAS ATTRACTED MUCH ATTENTION IN RECENT YEARS. IT IS CONSIDERED TO BE THE UNIQUE RENEWABLE AROMATIC RESOURCE AND THEREFORE REPRESENTS A POTENTIALLY VALUABLE FEEDSTOCK FOR THE PRODUCTION OF ORGANIC FINE CHEMICALS...

THE OXIDATION OF ALCOHOLS IS AN IMPORTANT PROCESS IN ORGANIC SYNTHESIS [1]. THE CHEMO-, REGIO-, AND STEREOSELECTIVE OXIDATION OF ALCOHOLS TO CORRESPONDING CARBONYL COMPOUNDS IS ONE OF THE FUNDAMENTAL ORGANIC TRANSFORMATIONS FROM THE SYNTHETIC POINT OF VIEW [2]. HOWEVER, THE SELECTIVE OXIDATION OF PRIMARY ALCOHOLIC COMPOUNDS TO CORRESPONDING ALDEHYDES REMAINS VERY DIFFICULT BECAUSE IN THE OXIDATION OF PRIMARY ALCOHOLS, THE MAIN PRODUCTS ARE THE CORRESPONDING CARBOXYLIC ACIDS [3]. THIS WORK DEALS WITH THE CATALYTIC CONVERSION OF BENZYL ALCOHOL TO ALDEHYDES USING MANGANESE OXIDE NANOPARTICLES AS CATALYST. THE CATALYTIC POTENTIAL OF THIS NANOCOMPOSITES HAS BEEN TESTED FOR THE OXIDATION OF PRIMARY ALCOHOLS USING H2O2 AS OXIDANT. THE EFFECTS OF VARIOUS PARAMETERS INCLUDING MOLAR RATIO OF OXIDANT TO SUBSTRATE, TEMPERATURE, AND SOLVENT HAVE BEEN STUDIED. THE OBTAINEDRESULTS SHOWED HIGH SELECTIVITY ALSO FOR THE OXIDATION OF PRIMARY ALCOHOLS TO ALDEHYDES. THE CATALYST WAS CHARACTERIZED BY X-RAY POWDER DIFFRACTION (XRD), AND SCANNING ELECTRON MICROSCOPY (SEM).THE OXIDATION PROCESS AND YIELD WAS STUDIED WITH GC.

IN RECENT YEARS CONSIDERABLE EFFORTS HAS BEEN DIRECTED TOWARDS THE TRANSITION METAL CATALYZED OXIDATION OF ORGANIC COMPOUNDS.AMONG THEM, OXIDATION OF ALCOHOLS TO ALDEHYDES AND KETONES HAS SPECIALLY BEEN ATTENDED A LOT, SINCE CARBONYL COMPOUNDS ARE IMPORTANT INTERMEDIATES IN ORGANIC SYNTHESIS. ...

AMONG THE VERY FEW EFFORTS FOR PREPARATION OF STABLE MESOPOROUS METAL-ORGANIC FRAMEWORKS (MOFS), THERE IS NO REPORT OF AN ADDITIVE-FREE EXAMPLE VIA A SURFACTANT-ASSISTED TEMPLATING METHOD [1]. ON THE OTHER HAND, PHOTOCATALYTIC AEROBIC OXIDATION OF ALCOHOLS MEDIATED BY CRYSTALLINE TIO2 HAS BEEN KNOWN AS A GREEN ROUTE, WHICH HAS THE POTENTIAL TO REPLACE CURRENT TECHNOLOGY WITH TRANSITION-METAL-CONTAINING HETEROGENEOUS SYSTEMS [2].HERE, A SIMPLE PROCEDURE FOR PREPARATION OF HKUST-1 CONTAINING ORDERED MESOPOROUS DOMAINS HAS BEEN DEVELOPED USING NONIONIC BLOCK COPOLYMER IN DMF AS THE SOLVENT. SHK2 WHICH REPRESENT SURFACTANT ASSISTED HKUST-1 PREPARED IN THE PRESENCE OF 2 G OF P123. THE SAMPLE WAS DECORATED WITH AMORPHOUS TITANIA THROUGH A LAYER-BY-LAYER COATING PROCEDURE. (SEE FIG.1).