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Toplam kayıt 88, listelenen: 1-20
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Protonation, tautomerization and valence tautomerization of selected imidazo[4,5-f]quinolines. A theoretical study of gas and liquid basicity of imidazo[4,5-f]quinolines
(1993)The theoretical calculations on imidazo[4,5-f] quinolines has shown that the first protonation takes place at the pyridine, nitrogen atom rather than at the imidazole nitrogen atom. The preferred tautomeric form was found ... -
Latex supported manganese (III) porphyrin catalysts for oxidations of alkenes by hydrogen peroxide and tert-butyl hydroperoxide in the aqueous medium
(1996)Cationic polymer latexes were prepared by emulsion copolymerization of vinylbenzyl chloride and divinylbenzene followed by quaternization with trimethylamine and used as catalyst supports for 5,10,15,20-tetrakis(2, ... -
Potentiometric titration of some imidazole derivatives in nonaqueous solvent
(1996)The acidity constants of 4,5-diphenyl imidazole, 2,4,5-triphenyl imidazole, and 2,4,5-triphenyl imidazole derivatives in nitrobenzene, acetonitrile and glacial acetic acid were determined. Perchloric acid, prepared in ... -
Structural studies of water-soluble ß-brominated manganese porphyrins: Stabilities of MnTDCSPPBr8 and MnTSPPBr8 as homogeneous and supported reagents toward hydrogen peroxide and sodium hypochlorite
(2001)This article describes the structural stabilities of [2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(2,6-dichloro-3- sulfonatophenyl)porphinato]manganese(III) X (where X = H2O and/or OH-, depending on pH) (MnTDCSPPBr8) ... -
Reverse atom transfer radical polymerization of stearyl methacrylate using 2,2'-azobisisobutyronitrile as the initiator
(2002)The living/controlled radical polymerization of stearyl methacrylate was carried out with a conventional radical initiator (2,2'-azobisisobutyronitrile) in N,N-dimethylformamide in the presence of a 2,2'-bipyridine complex ... -
Evaluation of polymer-supported rhodium catalysts in 1-octene hydroformylation in supercritical carbon dioxide
(American Chemical Society, 2003)Supercritical CO2 has been used as a benign solvent in the hydroformylation of 1-octene using a Rh-based catalyst. The catalyst is attached to a polymer backbone that has fluoroacrylate branches that make it soluble in ... -
Selective separation of uranium containing glutamic acid molecular-imprinted polymeric microbeads
(Marcel Dekker Inc, 2003)… -
Performance of dye-affinity beads for aluminium removal in magnetically stabilized fluidized bed
(2004)Background: Aluminum has recently been recognized as a causative agent in dialysis encephalopathy, osteodystrophy, and microcytic anemia occurring in patients with chronic renal failure who undergo long-term hemodialysis. ... -
Klorofil A'nın pH'ya bağımlı $H_2O_2$, $(CH_3)_3COOH$ ve NaOCI oksidantlarına karşı yapı kararlılığının incelenmesi
(2004)Bu çalışmada klorofil a'nın pH 1-14 arlığında oksidantsız ve hidrojen peroksit, tert-bütil hidroperoksit ve sodyum hipoklorite karşı yapı kararlılıkları 30 °C'de incelenmistir. Klorofil a'nın farklı oksidantlardaki parçalanma ... -
Klorofil A ve B'nin ışığa bağımlılığının petrol eteri,metanol ve su çözücülerinde yapı kararlılığının incelenmesi
(2004)Bu çalışmada klorofil a ve b'nin ışığa bağımlılığının petrol eteri, metanol, su çözücülerinde yapı kararlılıkları UV-görünür bölge spektrofotometre yardımıyla incelenmistir. Yaptığımız çalışmalarda klorofil a ve b'nin ... -
Determination of naproxen in tablets by using first derivative potentiometry
(2004)Bu çalışmada, naproksen sodyumun potansiyometrik tayini tanıtılmaktadır. Naproksenin tayini için en iyi çözücü sistemi, sodyum klorür ilavesiyle 0,1 iyonik şiddete ayarlı % 20 etanol (h/h) olarak bulundu. Aktif maddenin ... -
Klorofil B'nin pH'ya bağımlı $H_2O_2$,$(CH_3)_3COOH$ ve NaOCI oksidanlarına karşı yapı kararlılığının incelenmesi
(2004)Bu çalışmada klorofil b'nin pH 1-14 aralığında oksidantsız ortamda ve $H_2O_2$,$(CH_3)_3COOH$ ve NaOCl oksidantlarına yapı kararlılıkları UV-görünür bölge spektrofotometre yardımıyla incelenmistir. Farklı pH'larda inceledigimiz ... -
The synthesis, characterization and structural analysis of a Co(III) complex of 1,10-phenanthroline and perfluorosebacic acid, [Co(HL)(phen) 2(H2O)]L·H2O
(Verlag der Zeitschrift fur Naturforschung, 2006)The hexacoordinated mononuclear Co(III) complex 1, [Co(HL)(phen) 2(H2O)]L·H2O, with the mixed ligands (H2L = HO2C(CF2)8CO2H and 1,10-phenantroline) has been synthesized and characterized by elemental analysis, IR and UV/vis ... -
Süperkritik karbon dioksitte boyama
(2006)Tekstil materyallerinin klasik yöntemlere göre boyanmasında su kullanımı ve bunun sonucunda oluşan atıksu, çevre açısından önemli bir sorundur. Çevresel sorunları önlemek için kanuni yaptırımların olması, endüstriyel ... -
Photocatalytic oxidation of nitrobenzene and phenylamine: Pathways and kinetics
(John Wiley & Sons Inc, 2007)The oxidation of nitrobenzene and phenylamine has been carried out by heterogeneous photocatalysis in aqueous suspensions of commercial TiO2. The photoreactivity results indicate that two reaction pathways occur in parallel ... -
Photodegradation of pharmaceutical drugs in aqueous TiO2 suspensions: Mechanism and kinetics
(Elsevier Science BV, 2007)The degradation and mineralization of Tamoxifen (TAM) and Gemfibrozil (GEM) drugs, whose molecular structures exhibit ethereal bonds, have been carried out by irradiating aqueous suspensions of TiO2 with near-UV light at ... -
Photocatalytic selective oxidation of 4-methoxybenzyl alcohol to aldehyde in aqueous suspension of home-prepared titanium dioxide catalyst
(Wiley-V C H Verlag GMBH, 2007)The photocatalytic oxidation of 4-methoxybenzyl alcohol to p-anisaldehyde (PAA) was performed in water with organic-free suspensions of home-prepared and commercial titanium dioxide (TiO2) catalysts. The nanostructured ... -
Preconcentration of Fe(III) using Fe(III)-Ion imprinted polymeric traps and its analytical performance for FAAS
(2007)Novel Fe(III)-imprinted beads were prepared by molecular imprinting technique for selective solid-phase extraction (SPE) of Fe(III) ions prior to its determination by flame atomic absorption spectrometry (FAAS). The ... -
DFT thermochemical investigation of rearrangement for 3-hydroxy analogs of 2,3-dihydrobenzothiophen-2-and -3-ones
(2007)Thermodynamic and kinetic controlled reaction coordinate for the rearrangement of 2-benzotriazol-1-yl-2-alkyl-3- phenyl-2,3-dihydro-benzo[b]thiophen-3-ol derivatives have been predicted by using DFT calculated thermodynamic ...
