01391nas a2200253   4500008004100000022001400041245011300055210006900168260007300237300001200310490000600322520053300328653002300861653001000884653001100894653002300905653002300928653001200951653000800963653001100971653000800982100002000990856012701010       2006                        eng d  a1566-736700aSynthesis and characterization of high silica content silicoaluminophosphate SAPO-35 from non-aqueous medium0 aSynthesis and characterization of high silica content silicoalum  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a773-7770 v73 a<p>SAPO-35 with up to 15.6 Si atoms per unit cell have been synthesized, using hexamethyleneimine as template in ethylene glycol medium (molar ratio of silica in the reaction gets up to 2.5). Crystallinity and silicon incorporation was confirmed by XRD, XRF, TG/DTA, SEM, FT-IR and Al-27 and Si-29 MASNMR. These SAPO-35 materials with high Si concentration show higher activity for methanol to olefin reaction than samples prepared with up to 0.3 molar ratio of silica in the get. (c) 2005 Elsevier B.V. All rights reserved.</p>10aammonia adsorption10aFT-IR10aMASNMR10amethanol to olefin10anon-aqueous medium10aSAPO-3510aSEM10aTG/DTA10aXRD1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-high-silica-content-silicoaluminophosphate-sapo-35-non-001738nas a2200277   4500008004100000022001400041245009300055210006900148260007300217300001400290490000600304520087800310653000801188653001001196653001101206653000801217653001201225653001101237653001901248653001101267653000801278653000801286100002001294700001901314856012701333       2006                        eng d  a1566-736700aSynthesis and characterization of TAPO-31 molecular sieves using tripropylamine template0 aSynthesis and characterization of TAPO31 molecular sieves using   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC  a1015-10210 v73 a<p>TAPO-31 was synthesized hydrothermally using a novel template tri-n-propylamine for the first time. C and N analysis shows the butanol from titanium tetrabutoxide plays an important role in the synthesis. The incorporation of titanium into framework of phosphorous and both aluminiurn and phosphorous sites was suggested from elemental analysis. Isomorphous substitution of titanium (III) in AlPO framework was confirmed from ESR and (31)p MASNMR spectra. UV-Vis and XPS spectra revealed a partial oxidation of framework titanium (III) into titanium (IV) in the calcined TAPO-31 and thus the presence of redox centers in the products. The higher titanium content (Al/Ti = 10) TAPO-31 sample shows higher activity for phenol hydroxylation compared to lower titanium content (Al/Ti = 20) and Titanium impregnated AIPO(4)-31. (c) 2006 Elsevier B.V. All rights reserved.</p>10aESR10aFT-IR10aMASNMR10aSEM10aTAPO-3110aTG/DTA10atripropylamine10aUV-Vis10aXPS10aXRD1 aVenkatathri, N.1 aShetty, V., N.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-tapo-31-molecular-sieves-using-tripropylamine-template-002023nas a2200277   4500008004100000022001400041245014800055210006900203260007300272300001000345490000800355520110600363653002301469653000801492653001001500653001201510653001601522653000801538653001101546653001101557653001201568653000801580653000801588100002001596856012901616       2006                        eng d  a0926-860X00aSynthesis, characterization and catalytic properties of vanadium aluminophosphate molecular sieves VAPO-31 and VAPSO-Amr from non-aqueous media0 aSynthesis characterization and catalytic properties of vanadium   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAUG  a31-390 v3103 a<p>Vanadium samples containing aluminophosphate molecular sieve (VAPO-31) and amorphous vanadium silicoaluminophosphate (VAPSO-Amr) have been synthesized using hexamethyleneimine template from non-aqueous media for the first time. XRD and SEM analyses confirm the phase purity of the synthesized samples. FT-IR analysis suggests the incorporation of V4+ in the aluminophosphate framework. ESR, UV-vis spectroscopic, and XPS techniques and cyclicvoltametric studies confirm the incorporation of vanadium and reveal its presence in tetrahedral and square pyramidal environments in the as-synthesized samples. Cyclic voltammetry reveals the presence of two redox couples in VAPO-31. This catalyst is found to be a good oxidation catalyst. Although most of the properties of VAPO-31NA and VAPSO-Amr are similar, the latter can access more vanadium and V4+ ions. Compared to aqueous media samples, it can incorporate more vanadium especially V5+, ions and has been found to be better oxidation catalyst. The physicochemical properties also change with media. (C) 2006 Elsevier B.V. All rights reserved.</p>10acyclic voltammetry10aESR10aFT-IR10aMAS NMR10anon-aqueous10aSEM10aTG/DTA10aUV-Vis10aVAPO-3110aXPS10aXRD1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/synthesis-characterization-and-catalytic-properties-vanadium-aluminophosphate-molecular-001361nas a2200241   4500008004100000022001400041245006700055210006600122260010700188300001200295490000700307520060100314653001400915653000900929653001100938653000800949653001400957653001100971653001000982653000800992100002001000856009901020       2007                        eng d  a0970-707700aSynthesis and MASNMR characterization of VPI-5 molecular sieve0 aSynthesis and MASNMR characterization of VPI5 molecular sieve  a11/100 RAJENDRA NAGAR, SECTOR 3,, SAHIBABAD 201 005, GHAZIABAD, INDIAbASIAN JOURNAL OF CHEMISTRYcFEB  a347-3530 v193 a<p>The synthesized VPI-5 sample was characterized by XRD, SEM, FTIR, TG/DTA, Al-27, P-31 and 3Q MASNMR techniques, which shows that the sample was highly crystalline. Carbon and nitrogen analysis reveals that the sample contains no template molecules; however, TG/DTA analysis shows the presence of physisorbed template molecules. MASNMR results show the presence of two different types of aluminium and phosphorus, 3Q MASNMR shows the presence of two types of environmentally different tetrahedral aluminium, which are not observable by ordinary MASNMR along with known octahedral aluminium.</p>10a3Q-MASNMR10aFTIR10aMASNMR10aSEM10asynthesis10aTG/DTA10aVPI-510aXRD1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/synthesis-and-masnmr-characterization-vpi-5-molecular-sieve