01620nas a2200265   4500008004100000022001400041245014100055210006900196260010600265300001400371490000700385520065000392653001501042653001901057653001801076653001301094653001601107653001201123653001501135100002401150700001901174700001301193700002101206856012701227       2006                        eng d  a0009-250900aReverse microemulsion mediated sol-gel synthesis of lithium silicate nanoparticles under ambient conditions: Scope for CO2 sequestration0 aReverse microemulsion mediated solgel synthesis of lithium silic  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcMAY  a3415-34180 v613 a<p>We report on the synthesis of nanocrystalline lithium silicate by coupling of sol-gel method in reverse microemulsion. The sample calcined at 800 degrees C gives pure phase lithium metasilicate nanocrystallites. X-ray diffraction and transmission electron microscopy confirmed the formation of nanocrystalline lithium silicate particles with a narrow size distribution. The nanoparticle prepared in the microemulsion shows enhanced CO2 sorption capacity and shorter retention times at higher temperature (similar to 131 ml/g at STP at 610 degrees C which are better than the best known results. (c) 2005 Elsevier Ltd. All rights reserved.</p>10aAdsorption10aCarbon dioxide10aMicroemulsion10aparticle10aseparations10asol-gel10asurfactant1 aKhomane, Ramdas, B.1 aSharma, B., K.1 aSaha, S.1 aKulkarni, B., D.  uhttps://library.ncl.res.in/content/reverse-microemulsion-mediated-sol-gel-synthesis-lithium-silicate-nanoparticles-under-002051nas a2200265   4500008004100000022001400041245012700055210006900182260007300251300001400324490000800338520109600346653001701442653001601459653002201475653001801497653001901515653001501534100002001549700002401569700002001593700002201613700002101635856012901656       2008                        eng d  a0304-885300aSynthesis and magnetic properties of barium-calcium hexaferrite particles prepared by sol-gel and microemulsion techniques0 aSynthesis and magnetic properties of bariumcalcium hexaferrite p  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a1095-11010 v3203 a<p>The preparation of W-type hexaferrite particles with the composition BaCa2Fe16O27 by microemulsion and a stearic acid sol - gel method with and without surfactant has been investigated at various sintering temperatures. The structural and magnetic characteristics have been studied by X-ray diffraction ( XRD), a vibrating sample magnetometer ( VSM), scanning electron microscopy ( SEM), thermogravimetric analysis ( TGA), differential scanning calorimetric ( DSC) and Fourier transform infrared ( FTIR) techniques. The effect of sintering temperature on the properties of BaCa2Fe16O27 hexaferrites has been studied. The value of saturation magnetization ( M-s) depends on types of surfactant used. The sample prepared in the presence of polyoxyethylene ( 20) sorbitan monooleat ( Tween 80) shows low saturation magnetization ( M-s 15.10 emu/g), whereas the other sample prepared in the presence of a surfactant cetyltrimethylammonium bromide (CTAB) exhibits high saturation magnetization (M-s = 24.60 emu/g) compared to the normal sample. (C) 2007 Elsevier B. V. All rights reserved.</p>10aBaCa2Fe16O2710ahexaferrite10amagnetic property10aMicroemulsion10aSol-gel method10asurfactant1 aJotania, R., B.1 aKhomane, Ramdas, B.1 aChauhan, C., C.1 aMenon, Shamal, K.1 aKulkarni, B., D.  uhttps://library.ncl.res.in/content/synthesis-and-magnetic-properties-barium-calcium-hexaferrite-particles-prepared-sol-gel-0