02392nas a2200253 4500008004100000022001400041245010600055210006900161260007300230300001200303490000700315520145300322653003101775653002801806653002201834653002201856653002001878100002901898700001801927700001401945700002801959700002601987856012502013 2007 eng d a1387-181100aSynthesis and characterization of mesoporous carbon through inexpensive mesoporous silica as template0 aSynthesis and characterization of mesoporous carbon through inex aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN a189-1990 v983 a

Mesoporous silica materials have been synthesized through sol-gel reaction using inexpensive sodium silicate as source of silica and low cost hydroxy carboxylic acid compounds as templates/pore forming agents. The material measured surface area of 1014 m(2)/g, pore diameter of 65 angstrom and pore volume of 1.4 cc/g when parameters like time and temperature of synthesis along with mole ratio of TA/SiO(2) were optimized. Here TA stands for tartaric acid. Carbonization of sucrose inside the pores of above silica material at 900 degrees C followed by removal of silica framework using aqueous ethanoic solution of NaOH gave rise to mesoporous carbon material. The resulting materials were characterized by N(2)-sorption, FTIR spectroscopy, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, thermal analysis and cyclic voltammetry. Three dimensional interconnecting wormhole channel arrangement of mesoporous silica template leads to mesoporous carbon replica with surface area of 1200 m(2)/g. X-ray photoelectron spectroscopic study (XPS) of the mesoporous carbon material shows the concentration of carbon atom in the range of 97-98% with 1-2% oxygen and negligible amount of silica. The electrochemical double layer capacitance behavior of carbon material with the specific capacitance value of 88.0 F/g at the scan rate of 1 mV/s appears to be promising. (C) 2006 Elsevier Inc. All rights reserved.

10aElectrochemical properties10ahydroxy carboxylic acid10amesoporous carbon10aMesoporous silica10asodium silicate1 aKarandikar, Prashant, R.1 aPatil, K., R.1 aMitra, A.1 aKakade, Bhalchandra, A.1 aChandwadkar, Asha, J. uhttp://library.ncl.res.in/content/synthesis-and-characterization-mesoporous-carbon-through-inexpensive-mesoporous-silica02262nas a2200241 4500008004100000022001400041245022000055210006900275260007300344300001200417490000800429520124100437653002401678653003901702653002201741653002801763653001401791100002001805700002201825700001701847700002801864856012801892 2008 eng d a1387-181100aInorganic-organic hybrid materials based on functionalized silica and carbon: a comprehensive understanding toward the structural property and catalytic activity difference over mesoporous silica and carbon supports0 aInorganicorganic hybrid materials based on functionalized silica aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcNOV a345-3550 v1153 a

Inorganic-organic hybrid materials based on functionalized silica and carbon were synthesized by anchoring molybdovanadophosphoric acid (H-5[PMo10V2O40]center dot 32.5H(2)O) onto amine-functionalized SBA-15, ethane-bridged SBA-15 and mesoporous carbon, respectively. Small angle X-ray diffraction, N-2 sorption analysis, HRTEM, SEM, IFT-IR, CP-MAS NMR were used to diagnose the mesoporous structure of inorganic-organic hybrid materials. The structural integrity of molybdovanadophosphoric acid has been found to be retained after immobilization over mesoporous materials. These inorganic-organic hybrid materials were tested in the environmentally friendly oxidation of 2-methylnaphthalene (2MN) with 30%, aqueous hydrogen peroxide. Molybdovanadophosphoric acid containing mesoporous organosilica hybrid material (ethane-bridged SBA-15) exhibited higher catalytic activities in the oxidation of 2MN to give a clean product 2-methy-1,4-naphthoquinone (menadione vitamin K3 precursor), because of the improved hydrophobicity of the material. The correlation between structural properties and catalytic activities of these hybrid materials has been well addressed in our present studies. (c) 2008 Elsevier Inc. All rights reserved.

10a2-Methylnaphthalene10ainorganic-organic hybrid materials10amesoporous carbon10amesoporous organosilica10aOxidation1 aBordoloi, Ankur1 aMathew, Nevin, T.1 aLefebvre, F.1 aHalligudi, Shivaraj, B. uhttp://library.ncl.res.in/content/inorganic-organic-hybrid-materials-based-functionalized-silica-and-carbon-comprehensive-002045nas a2200289 4500008004100000022001400041245010700055210006900162260009500231300001200326490000800338520104400346653001301390653001201403653001801415653002201433653001101455100001701466700001801483700001601501700002001517700002201537700001901559700002801578700002001606856012901626 2016 eng d a0021-951700aStudies of synergy between metal-support interfaces and selective hydrogenation of HMF to DMF in water0 aStudies of synergy between metalsupport interfaces and selective a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcAUG a248-2600 v3403 a

Metal-support interfaces play a very important role in heterogeneous catalysis. The interfacial interactions not only are responsible for stabilizing the necessary oxidation state to facilitate the reaction but also enhance the stability of the catalyst system. Nano dispersion of Ni on mesoporous nitrogen-rich carbon material has been achieved using two different synthesis methods. It was observed that nickel (0) gets stabilized by strong interfacial interaction with the nitrogen atoms of the support material, and the material was found to be very economic and efficient for the conversion of HMF to DMF in aqueous medium. The material shows >= 99% conversion to 5-(hydroxymethyl) furfural (HMF) within 6 h of reaction with 98.7% DMF selectivity. A unique correlation between synthesis methods and particle sizes with catalytic performance has been observed for these newly developed materials. Furthermore, a DFT calculation has been performed to predict the reaction mechanism. (C) 2016 Elsevier Inc. All rights reserved.

10abiofuels10aBiomass10aHydrogenation10amesoporous carbon10aNi-CNx1 aGoyal, Reena1 aSarkar, Bipul1 aBag, Arijit1 aSiddiqui, Nazia1 aDumbre, Deepa, K.1 aLucas, Nishita1 aBhargava, Suresh, Kumar1 aBordoloi, Ankur uhttp://library.ncl.res.in/content/studies-synergy-between-metal-support-interfaces-and-selective-hydrogenation-hmf-dmf-water02259nas a2200229 4500008004100000022001400041245015300055210006900208260000800277520139800285653001801683653002101701653001901722653002301741653002201764653002201786100002101808700002901829700002601858700002301884856012201907 2020 eng d a1380-222400aSynthesis, characterization and catalytic study of mesoporous carbon materials prepared via mesoporous silica using non-surfactant templating agents0 aSynthesis characterization and catalytic study of mesoporous car cNOV3 a

Mesostructured silica materials with surface area in the range of similar to 700-900 m(2)/g have been prepared using hydroxy-carboxylic acid compounds such as tartaric acid, malic acid and citric acid (low cost non-surfactant template/pore forming agents) and tetraethylorthosilicate (TEOS) as silica source by sol-gel reaction. The templates were removed by either soxhlet extraction or calcination method. Mesoporous carbon molecular sieves were then prepared by carbonizing sucrose inside the pores of the above prepared mesoporous silica using sulfuric acid as a catalyst. The materials were characterized by FTIR spectroscopy, powder X-ray diffraction (XRD), N-2-sorption studies, microanalysis, thermal analysis and transmission electron microscopy (TEM). The resulting carbon material shows relatively higher surface area (similar to 1100 m(2)/g), narrow pore size distribution and pore diameter of 4-5 nm. The mesoporosity of carbon material arises from interconnecting channels arrangements of mesoporous silica template. The mesoporous carbon material was used as a support for the immobilization of rhodium complex [HRhCO(TPPTS)(3)] by ossification method. The prepared catalyst has been tested for the hydroformylation of higher olefins. The activity of the catalyst was improved by 20-30% as compared to the catalyst prepared from a conventional activated carbon support.

10aCarbonization10aHydroformylation10aImmobilization10aLow cost templates10amesoporous carbon10aMesoporous silica1 aPagar, Nitin, S.1 aKarandikar, Prashant, R.1 aChandwadkar, Asha, J.1 aDeshpande, Raj, M. uhttp://library.ncl.res.in/content/synthesis-characterization-and-catalytic-study-mesoporous-carbon-materials-prepared01591nas a2200289 4500008004100000022001400041245010800055210006900163260000800232300001100240490000800251520061400259653001600873653002700889653002200916653001700938100002500955700002100980700002701001700002301028700001901051700002901070700002201099700002601121700002601147856012801173 2022 eng d a1566-736700aGreen synthesis of cyclohexanone to adipic acid over Fe-W oxides incorporated mesoporous carbon support0 aGreen synthesis of cyclohexanone to adipic acid over FeW oxides  cAUG a1064660 v1683 a

We have prepared iron and tungsten oxides incorporated mesoporous carbon (MC) catalysts using a simple hydrothermal methodology with different carbon sources, and the catalytic performance was investigated for cyclohexanone oxidation. An adequate amount of metal oxide loading has displayed a key role in the selective catalyst for adipic acid (AA) synthesis. The MC catalyst has shown its prime activity under the influence of redox properties of W5+/W6+ and Fe2+/Fe3+ as promoters. The 10%Fe 90%W-MC fructose as a carbon source catalyst has provided its best selectivity of 87% for AA at 120 ?C.

10aAdipic Acid10aLiquid phase oxidation10amesoporous carbon10aRedox center1 aMekala, Siva, Prasad1 aPrabu, Marimuthu1 aGawali, Sheetal, Datta1 aGopakumar, Karthik1 aGogoi, Pranjal1 aBhatkar, Akash, Ravindra1 aMohapatra, Gourab1 aUnnikrishanan, Eeswar1 aRaja, Thirumalaiswamy uhttp://library.ncl.res.in/content/green-synthesis-cyclohexanone-adipic-acid-over-fe-w-oxides-incorporated-mesoporous-carbon03356nas a2200265 4500008004100000022001400041245011900055210006900174260000800243300001100251490000800262520246800270653001002738653001302748653002602761653002202787653002502809100002002834700002302854700002002877700002602897700002102923700001702944856012902961 2023 eng d a0167-273800aBenign strategy toward mesoporous carbon coated Sb nanoparticles: a high-performance Li-ion/Na-ion batteries anode0 aBenign strategy toward mesoporous carbon coated Sb nanoparticles cAUG a1162430 v3963 a

Antimony (Sb)-based anodes can offer excellent gravimetric capacity (-660 mAhg(1)) in lithium-ion/sodium-ion batteries (LIBs/SIBs) fabricated using carbonate-based electrolytes complexed with lithium/sodium salt. However, high first-cycle irreversible loss (35-40%) and gradual capacity fade (25-30%/cycle) originate from solid electrolyte interphase (SEI), and severe volumetric stress (-300%) associated with alloyed phase(s) impede reallife applications. Herein, we devise a benign strategy to develop mesoporous carbon coating onto antimony nanoparticles (Sb@C) based core-shell architecture for LIBs/SIBs anode. In particular, -30-50 nm thick mesoporous carbon spheres (-1 +/- 0.5 mu m) were obtained from resorcinol-formaldehyde (RF)-based polycondensation reaction by sol-gel chemistry engulfing Sb nanoparticles by suitably controlling Cetyltrimethylammonium bromide (CTAB)-induced steric stabilization and pH modulation during synthesis. The core-shell Sb@C helps faster Li+/Na+-ion migration preventing the structural collapse of Sb during electrochemical cycling and thereby improving the capacity fade. Electrochemical results demonstrate Sb@C can deliver a specific capacity of -536 mAhg(-1) and - 291 mAhg(-1) at 0.1C current rate in LIBs and SIBs, respectively, up to 200 cycles. Electrochemical impedance spectroscopy (EIS) indicates lower charge transfer (Rct) and SEI resistance (RSEI) of Sb@C cycled electrode than the bare Sb-NPs was the probable reason for improved Li/Na-ion storage in Sb@C anode. A detailed galvanostatic intermittent titration technique (GITT) and internal resistance measurements during 1st and 2nd cycles shed light on distinguishably different Li-ion/Na-ion storage behavior. The bulk Li+/Na+-ion diffusion coefficients found diminishes at reaction voltages (0.9 V/0.6 V for lithiation and 0.6 V/0.4 V for sodiation) corresponding with alloyed phase(s) concurrent with a drop in internal resistance at the quasi-opencircuit voltage (QOCV) during 1st and 2nd discharge cycle. On the contrary, de-alloying phenomena from the fully lithiated/sodiated phase(s) display an entirely opposite trend. The Li+ diffusion coefficient reaches minima at -1.1 V with a sudden jump in the internal resistance at QOCV during 1st and 2nd charge cycle. However, Na+ diffusion coefficient gradually drops along with a steep increase in the internal resistance, indicating partial Naion trapping and irreversible capacity loss.

10aanode10aAntimony10alithium-ion batteries10amesoporous carbon10aSodium-ion batteries1 aDashairya, Love1 aChaturvedi, Vikash1 aKumar, Abhishek1 aMohanta, Tandra, Rani1 aShelke, Manjusha1 aSaha, Partha uhttp://library.ncl.res.in/content/benign-strategy-toward-mesoporous-carbon-coated-sb-nanoparticles-high-performance-li-ionna