02006nas a2200205   4500008004100000022001400041245006900055210006900124260007300193300001000266490000700276520129000283653002201573653001701595653002701612653001901639100001901658700002001677856010301697       2006                        eng d  a0169-131700aOxidation of aniline over titania pillared montmorillonite clays0 aOxidation of aniline over titania pillared montmorillonite clays  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUL  a89-980 v333 a<p>Titania pillared clays (Ti-PILC) have been synthesized employing conventional stirring (method I) and ultrasonic agitation (method II) techniques followed by hydrothermal treatment. The characterization results revealed the formation of Ti-PILC with significant reduction of time when ultrasonic method was used. Subsequent hydrothermal treatment on the samples has resulted in the increase in the crystallinity and the transformation of anatase TiO2 to rutile TiO2. The rutile phase is more prominent in the samples prepared by stirring method. UV-Vis studies on the samples exhibit blue shift in the absorption band due to the quantum size effect. This indicates that a major part of TiO2 in the pillared clay could be well below 10 nm in size, which is supported by XRD and the average pore size. The pillared clay catalysts have proved to be promising in aniline oxidation with H2O2, selectively forming azoxybenzene under the working conditions. The aniline conversion and the product distribution largely depended on the catalyst concentration, H2O2 to aniline mole ratio, the nature of the solvent and the oxidant. Higher conversion of aniline and greater selectivity for azoxybenzene was obtained with methanol as the solvent. (C) 2006 Elsevier B.V. All rights reserved.</p>10aaniline oxidation10aAzoxybenzene10ahydrothermal treatment10apillared clays1 aJagtap, Neelam1 aRamaswamy, Veda  uhttps://library.ncl.res.in/content/oxidation-aniline-over-titania-pillared-montmorillonite-clays-001948nas a2200253   4500008004100000022001400041245015200055210006900207260000800276300001100284490000800295520103600303653002301339653002401362653002701386653001501413653002401428100003001452700002501482700001801507700002501525700002001550856012401570       2021                        eng d  a0960-852400aOzone assisted autohydrolysis of wheat bran enhances xylooligosaccharide production with low generation of inhibitor compounds: a comparative study0 aOzone assisted autohydrolysis of wheat bran enhances xylooligosa  cOCT  a1255590 v3383 aIn the present study, ozone assisted autohydrolysis (OAAH) was evaluated for enhanced generation of xylooligosaccharide (XOS) from wheat bran. The total XOS yield with optimum ozone dose of 3% (OAAH-3) was found to be 8.9% (w/w biomass) at 110 degrees C in comparison to 7.96% at 170 degrees C by autohydrolysis (AH) alone. Although, there was no significant difference in oligomeric composition (DP 2-6), significant decrease in degradation products namely furfural (2.78-fold), HMF (3.15-fold), acrylamide (nil) and acetic acid (1.06-fold), was observed with OAAH-3 as a pretreatment option. There was 1-fold higher xylan to XOS conversion and OAAH-hydrolysate had higher DPPH radical scavenging activity than AH. PCA plots indicated clear enhancement in XOS production and lower generation of inhibitors with decrease in treatment temperature. Results of the study therefore suggest OAAH can be an effective pretreatment option that can further be integrated with downstream processing for concentration and purification of XOS.10aAdvanced oxidation10aAgro-industry waste10ahydrothermal treatment10aOzonolysis10aXylooligosaccharide1 aSonkar, Rutuja, Murlidhar1 aGade, Pravin, Savata1 aBokade, Vijay1 aMudliar, Sandeep, N.1 aBhatt, Praveena  uhttps://library.ncl.res.in/content/ozone-assisted-autohydrolysis-wheat-bran-enhances-xylooligosaccharide-production-low