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Oxidation of Thymol and Carvacrol to Thymoquinone with KHSO5 Catalyzed by Iron Phthalocyanine Tetrasulfonate in a Methanol-Water Mixture
Günay, Tugce; Çimen, Yasemin; Karabacak, R. Bengü; Türk, Hayrettin (Springer, 2016)The oxidation of thymol and carvacrol to thymoquinone with potassium peroxymonosulfate (KHSO5) catalyzed by iron phthalocyanine tetrasulfonate (FePcTS) in a methanol (4.0 mL)-water (0.5 mL) mixture has been carried out. ... -
Preparation of cationic latexes with different length alkyl groups on their quaternary as supports for IBA catalyst ammonium ions and their use in the hydrolysis of PNPDPP
Erdem, Murat; Türk, Hayrettin (Elsevier Science BV, 2008)In this study, four cationic latexes containing n-hexadecyl, n-octyl, or a methyl group as one of the alkyls on their quaternary ammonium ions were synthesized and used as supports for o-iodosobenzoate (IBA) catalyst in ... -
Preparation of PS Colloids with DMA and MMA Comonomers and Suitability of P(S/DMA) for Colloidal Silica Deposition
Karabacak, R. Bengü; Türk, Hayrettin (Taylor & Francis Inc, 2012)There is a lack of investigation on the effects of hydrophilic comonomer and pH on the particle size of functionalized polystyrene colloids. In this study, polystyrene (PS) colloids were prepared via emulsifier-free emulsion ... -
Reaktif organobentonit katkıların sert poliüretan köpüğün bazı performans özellikleri üzerine etkisi
Erdem, Murat; Ortaç, Kübra; Erdem, Bilge; Türk, Hayrettin (2017)Bu çalışmada; bentonit, amin ve hidroksil fonksiyonelliğine sahip bileşikler ile modifiye edilmiş ve eldeedilen organobentonitler sert poliüretan köpük nanokompozit (SPKN) sentezinde katkı olarakkullanılmışlardır. Poliüretan ... -
Removal of Copper(Ii) Ions From Aqueous Solution By a Lactic Acid Bacterium
Yılmaz, M.; Tay, Turgay; Kıvanç, Merih; Türk, Hayrettin (Brazilian Soc Chemical Eng, 2010)Enterococcus faecium, a lactic acid bacterium (LAB), was evaluated for its ability to remove copper(II) ions from water. The effects of the pH, contact time, initial concentration of copper(II) ions, and temperature on the ... -
Structural stabilities of N-permethylated tetracations of meso-tetrakis(4-pyridyl)porphyrin, meso-tetrakis[4-(dimethylamino)phenyl]porphyrin, and their manganese(III) complexes toward hydrogen peroxide, tert-butylhydroperoxide, and sodium hypochlorite
Türk, Hayrettin; Erdem, Murat (Soc Porphyrins & Phthalocyanines, 2004)The degradation rate constants of the tetracations 5,10,15,20-tetrakis(N-methylpyridinium-4-yl)porphyrin and 5,10,15,20-tetrakis(N,N,N-trimethylanilinium-4-yl)porphyrin as well as their manganese(III) complexes toward the ... -
Structural stabilities of sulfonated manganese tetramesitylporphyrin and its beta-brominated analogue toward NaOCl, H2O2 and (CH3)(3)COOH
Türk, Hayrettin; Tay, Turgay; Berber, Hüseyin (Elsevier Science BV, 2000)This article gives the degradation rate constants of meso-tetrakis(3,5-disulfonatomesityl)porphinatomanganese(III) X (where X = H2O and/or OH- depending on pH) (MnTMSP) and its beta-brominated analogue (MnTMSPBr8) toward ... -
Structural stabilities of water-soluble MnTDCSPP, MnTSPP, and supported analogues toward hydrogen peroxide and sodium hypochlorite
Türk, Hayrettin; Berber, Hüseyin (Wiley-Blackwell, 2000)This article describes the structural stabilities of 5,10,15,20-tetrakis(2.6-dichloro-3-sulfonatophenyl)porphinatomanganese(III) X (X: OH-. H2O) (MnTDCSPP), 5,10,15,20-tetra(4-sulfonatophenyl)porphinatomanganese(III) X (X: ... -
Structural studies of water-soluble beta-brominated manganese porphyrins: Stabilities of MnTDCSPPBr8 and MnTSPPBr8 as homogeneous and supported reagents toward hydrogen peroxide and sodium hypochlorite
Türk, Hayrettin; Berber, Hüseyin (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 = $H_2O$ and/or OH- , depending on pH) (MnTDCSPPBr8 ... -
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
Türk, Hayrettin; Berber, Hüseyin (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) ... -
Synthesis of 5-(4-methacrylamidophenyl)-10,15,20-triphenylporphyrin, its copolymerization with acrylamide and EDMA, use of this copolymer in the adsorption of bovine serum albumin
Tay, Turgay; Türk, Hayrettin; Say, Rıdvan (Elsevier Science BV, 2007)A rigid and porous polymeric adsorbent was prepared from monomers 5-(4-methacrylamidophenyl)-10,15,20-triphenylporphyrin (1%), acrylamide (39%), and cross-linking agent ethylene glycol dimethacrylate (60%) using suspension ... -
Synthesis of novel methacrylate based adsorbents and their sorptive properties towards p-nitrophenol from aqueous solutions
Erdem, Murat; Yüksel, Erdinc; Tay, Turgay; Çimen, Yasemin; Türk, Hayrettin (Academic Press Inc Elsevier Science, 2009)The polymeric adsorbents were synthesized from 2-dimethylaminoethyl methacrylate (DMA) and [2(methacryloyloxy)ethyl]dimethylhexadecylammonium bromide (DMAC(16)) monomers in the presence of ethylene glycol dimethacrylate ...