01558nas a2200229   4500008004100000022001400041245018500055210006900240260007300309300001400382490000600396520062400402653002201026653001801048653002601066653002801092653001101120653002101131100002601152700001801178856013201196       2007                        eng d  a1566-736700aIn situ generation of hydrogen peroxide from reaction of O-2 with hydroxylamine from hydroxylammonium salt in neutral aqueous or non-aqueous medium using reusable Pd/Al2O3 catalyst0 aIn situ generation of hydrogen peroxide from reaction of O2 with  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcNOV  a1578-15820 v83 a<p>In situ generation of H2O2 with high yield can be accomplished by reacting 02 with NH2OH from hydroxylammonium salt [NH2OH.HCl or (NH2OH)(2) . H2SO4] in a neutral aqueous medium using a reusable heterogeneous Pd (1.0 wt%)/Al2O3 catalyst, even at low temperature (10 degrees C), with the formation of harmless by-products (viz. N-2 and water). The presence of KCl or KBr in the medium has beneficial effect. The H2O2 generation is strongly influenced by the pH of medium, reaction period and temperature; best results are obtained at the optimum pH and reaction medium. (c) 2007 Elsevier B.V. All rights reserved.</p>10aHydrogen peroxide10ahydroxylamine10aHydroxylammonium salt10ain situ H2O2 generation10aoxygen10aPd/AlO3 catalyst1 aChoudhary, Vasant, R.1 aJana, Prabhas  uhttps://library.ncl.res.in/content/situ-generation-hydrogen-peroxide-reaction-o-2-hydroxylamine-hydroxylammonium-salt-neutral-001502nas a2200229   4500008004100000022001400041245011900055210006900174260010600243300001400349490000700363520058100370653003000951653002700981653002701008653001101035653002501046100002301071700002401094700002201118856013201140       2013                        eng d  a0040-403900aN-Heterocyclic carbene catalyzed oxidative stannylation of aldehydes: a facile entry to organotin(IV) carboxylates0 aNHeterocyclic carbene catalyzed oxidative stannylation of aldehy  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcMAY  a2679-26810 v543 a<p>A simple protocol is described for the oxidative transformation of aldehydes to the corresponding organotin(IV) carboxylates in high yields (up to 90%) that utilizes atmospheric O-2 as the sole oxidant, N-heterocyclic carbene as catalyst (at 10 mol %), and tributyl tin chloride as stannylating agent. The uniqueness of the reaction lies in the direct conversion of aldehydes to the corresponding organotin(IV) carboxylates via stannylation of carboxylic acids, generated from the reaction of a Breslow intermediate with O-2. (c) 2013 Elsevier Ltd. All rights reserved.</p>10aCarboxylic acid stannanes10aN-Heterocyclic carbene10aOxidative stannylation10aoxygen10aTributyltin chloride1 aReddi, Rambabu, N.1 aMalekar, Pushpa, V.1 aSudalai, Arumugam  uhttps://library.ncl.res.in/content/n-heterocyclic-carbene-catalyzed-oxidative-stannylation-aldehydes-facile-entry-organotiniv-001608nas a2200217   4500008004100000022001400041245010200055210006900157260007700226300001200303490000600315520081200321653002801133653001301161653001101174653001401185653002201199100001501221700003001236856012401266       2014                        eng d  a1867-388000aNOx reduction at near ambient temperatures and under lean-burn conditions on modified pd surfaces0 aNOx reduction at near ambient temperatures and under leanburn co  aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcFEB  a531-5370 v63 a<p>Palladium surfaces that are modified with O atoms in the subsurface broaden the NO reduction temperature regime up to 325 K with O-2-rich NO+H-2+O-2 compositions. Compared to virgin Pd surfaces, up to 150% higher deNO(x) catalytic activity was observed with modified Pd surfaces at the reaction maximum. Molecular beam instrument and ambient-pressure photoelectron spectroscopy were employed to follow the kinetic and surface changes. These results open up a possibility to realize the cold-start reduction of NOx (deNO(x)). DeNO(x) activity reported in the literature with supported Pd catalysts after a simple calcination in air compares well with our present observations. Surface modification is likely to demonstrate a high potential for other catalytic reactions at relatively low temperatures.</p>10aheterogeneous catalysis10anitrogen10aoxygen10aPalladium10asurface chemistry1 aRoy, Kanak1 aGopinath, Chinnakonda, S.  uhttps://library.ncl.res.in/content/nox-reduction-near-ambient-temperatures-and-under-lean-burn-conditions-modified-pd-001257nas a2200241   4500008004100000022001400041245015100055210006900206260007500275300001000350490000600360520034400366653001400710653001300724653002100737653002800758653001100786100002300797700001900820700002400839700002200863856013000885       2016                        eng d  a2193-580700aN-heterocyclic-carbene-catalyzed regioselective oxidative ring-opening of epoxides with aromatic aldehydes: a facile entry to alpha-acyloxyketones0 aNheterocycliccarbenecatalyzed regioselective oxidative ringopeni  aPOSTFACH 101161, 69451 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcJAN  a48-510 v53 a<p>A high-yielding synthesis of -acyloxyketones using a N-heterocyclic-carbene (NHC)-catalyzed, oxidative ring-opening of epoxides with aromatic aldehydes is described. This regioselective, oxidative process utilizes a N-bromosuccinimide (NBS)/DMSO combination as the oxidant system and Et3N as the base under mild reaction conditions.</p>10aaldehydes10aepoxides10ahalogen oxidants10aN-heterocyclic carbenes10aoxygen1 aReddi, Rambabu, N.1 aGontala, Arjun1 aPrasad, Pragati, K.1 aSudalai, Arumugam  uhttps://library.ncl.res.in/content/n-heterocyclic-carbene-catalyzed-regioselective-oxidative-ring-opening-epoxides-aromatic-001853nas a2200241   4500008004100000022001400041245010300055210006900158260000800227490000700235520104400242653001601286653001401302653001101316653001101327653001501338100002701353700003101380700002501411700002601436700002901462856012001491       2023                        eng d  a1932-213500aShort review on recent advances in porous adsorbents for separation of oxygen from atmospheric air0 aShort review on recent advances in porous adsorbents for separat  cMAR0 v183 a<p>
	Pure oxygen demand is continuously increasing worldwide due to wide applications including medical and industrial. Pressure swing adsorption (PSA) is one of the promising techniques to separate O-2 from atmospheric air. The porous solid adsorbent is a key element in the PSA to trap nitrogen (N-2) and release O-2. Several adsorbents including low silica X (LSX), zeolite 5A, ion-exchanged LSX (Li-LSX, AgLi-LSX, Ca-LSX), Engelhard titanosilicate (Na-ETS-10, Ag-ETS-10), and SSZ-13 have been investigated for adsorption of N-2 from the air. This review article is a summarization of recent research work published on O-2 separation using different porous adsorbents via PSA. This review also emphasizes on the best porous sorbent for purification of O-2 by sorption of N-2 and Ar. The adsorption capacities with experimental conditions are also rigorously discussed. The review also proposed future trends and prospects for O-2 separation. This review will be helpful to choose remarkable adsorbent for the generation pure O-2.</p>
10a13X zeolite10aadsorbent10aETS-1010aoxygen10aSeparation1 aShrotri, Aadesh, R. R.1 aNiphadkar, Prashant, S. S.1 aBokade, Vijay, V. V.1 aUtgikar, Vivek, P. P.1 aNandanwar, Sachin, U. U.  uhttps://library.ncl.res.in/content/short-review-recent-advances-porous-adsorbents-separation-oxygen-atmospheric-air