01681nas a2200241   4500008004100000022001400041245018800055210006900243260009500312300001200407490000800419520068600427653002601113653004201139653002101181653002201202653001301224653000901237653002201246100002601268700001801294856012701312       2007                        eng d  a0021-951700aSynergetic effect of two halogen promoters present in acidic reaction medium or catalyst on the H2O2 formation (in H-2-to-H2O2 oxidation) and destruction over Pd/C (or Al2O3) catalyst0 aSynergetic effect of two halogen promoters present in acidic rea  a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcMAR  a434-4390 v2463 a<p>A strong synergetic effect of two different halide anions (F- and I-, Cl- and I-, Cl- and Br-, and F- and Br-) at optimum concentration in the catalyst or in an acidic reaction medium was observed in the H-2-to-H2O2 oxidation over Pd/C, Pd/Al2O3, and halogenated Pd/Al2O3 catalysts. The synergetic effect promote, the net H2O2 formation by inhibiting the H2O2 decomposition and hydrogenation reactions. The effect is most pronounced for the combination of fluoride (or chloride) and iodide anions. The Br (1 wt%)-F (1 wt%)-Pd (5 wt%)/Al2O3 catalyst showed very high H2O2 yield (59%)/selectivity (60%) in the H-2-to-H2O2 oxidation. (c) 2006 Elsevier Inc. All rights reserved.</p>10aH-2-to-H2O2 oxidation10aH2O2 decomposition H2O2 hydrogenation10ahalogen promoter10aHydrogen peroxide10aPd/Al2O310aPd/C10asynergetic effect1 aChoudhary, Vasant, R.1 aJana, Prabhas  uhttps://library.ncl.res.in/content/synergetic-effect-two-halogen-promoters-present-acidic-reaction-medium-or-catalyst-h2o201751nas a2200229   4500008004100000022001400041245012000055210006900175260000800244300001200252490000700264520096000271653001901231653001701250653001301267653002701280653002201307100002201329700002601351700001601377856012801393       2020                        eng d  a0095-978200aBinary mixtures of aprotic and protic ionic liquids demonstrate synergistic polarity effect: an unusual observation0 aBinary mixtures of aprotic and protic ionic liquids demonstrate   cFEB  a210-2210 v493 a<p>In this communication, we demonstrate the solute-solvent and solvent-solvent interactions in the binary mixtures of two aprotic ionic liquids, namely 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, with the protic ionic liquid 1-methylimidazolium acetate. The synergistic effects as expressed by the solvatochromic parameter are noted. This observation is in contrast to the mixing of protic ionic liquids 1-methylpyrrolidium acetate and 4-methylmorpholine acetate with 1-methylimidazolium acetate, respectively. It appears that the synergistic effects in the binary mixtures of aprotic and protic ionic liquids are caused by the formation of hydrogen bonds, since cations are dominant H-bond donors while anions are dominant H-bond acceptors. Preferential solvation models are used to describe the solute-solvent interactions in the binary ionic liquid mixtures.</p>
10abinary mixture10aIonic liquid10apolarity10aPreferential solvation10asynergetic effect1 aThawarkar, Sachin1 aKhupse, Nageshwar, D.1 aKumar, Anil  uhttps://library.ncl.res.in/content/binary-mixtures-aprotic-and-protic-ionic-liquids-demonstrate-synergistic-polarity-effect