bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Novel coordination polymer, [AgI/4 (bpdc)(H2bpdc)(Hbpdc)2]n (bpdc=2,2′‐bipyridyl‐3,3′‐dicarboxylate): Coordination models of bpdc ligands
Authors: Guo Hong‐You , Chen Chun‐Xue , Wei Yong‐Ge , Jin Xiang‐Lin , Fang Chun , Wang Ping 
Published: September 2010

AbstractA novel coordination polymer, [Ag4ppdc)(H2bpdc)(Hbpdc)2] (bpdc = 2,2′‐bipyridyl‐3,3′‐dicarboxylate), was hydrothermally synthesized at 403 K and structurally characterized by single crystal X‐ray diffraction analysis. The compound crystalizes in the monoclinic space group C2/c with a=1.9516(4) nm, b=1.9503(4) nm. c=1.2566(3) nm, and β=112.48(3)°. In the two‐dimensional crystal structure, AgI center is coordinated, in a scarce coordination environment, double‐capped tetrahedron, by one bpdc ligand to form N‐Ag‐N chelate bond via two pyridyl N atoms, and other two bpdc ligands to form two O‐Ag‐O chelate bonds, respectively, via two carboxyl O atoms. The bpdc ligands are present in one non‐protonated form, bpdc, and two protonated forms, Hbpdc and H2bpdc, which all act as μ3‐ligand in a hexadentate fashion (N, N′; O, O′; O, O′) to coordinate with three Ag centers, respectively, through the three chelate bonds. This coordinated fashion of bpdc ligand is first found in the title compound. W‐Us‐NIR reflectance spectroscopy study revealed insulator nature for the crystal with an optical energy gap of 3.1 eV.
Enantiomeric separation of epinephrine and salbutamol by micellar electrokinetic chromatography using β‐cyclodextrin as chiral additive
Authors: Zheng Yan‐Peng , Mo Jin‐Yuan 
Published: September 2010

AbstractEnantiomeric separations of epinephrine and salbutamol, by means of micellar electrokinetic chromatography (MEKC) employing β‐cyclodextrin as chiral additive in ammonium chloride‐ammonia solution were investigated. In this system, the analytes migrated with the micellar phase towards the anode and were detected by electrochemistry using gold microelectrode at +0.65 V vs. SCE. The success of the chiral separations is strongly dependent on the concentration of β‐CD and SDS, and the optimal concentration is 8 mmol·L−1 and 15 mmol·L−1 respectively. The effects of detection potential, pH value of electrolyte and applied voltage were discussed also. Using the proposed method, baseline separation of the enantiomers could be accomplished in 6 min. Further, an attempt was made to elucidate the plausible mechanism of the chiral recognition.
A novel debromination of vic‐dibromides to alkenes with InCl3(cat.)/Sm system in aqueous media
Authors: Wang Min , Wang Lei , Li Pin‐Hua , Yan Jin‐Can 
Published: September 2010

AbstractA novel debromination of vic‐dibromides to alkenes with InCl3(cat.)/Sm system in aqueous media has been developed. The reaction gives the E‐isomers with excellent yields.
Discovery of anti‐SARS coronavirus drug based on molecular docking and database screening
Authors: Chen Hai‐Feng , Yao Jian‐Hua , Sun Jing , Li Qiang , Li Feng , Fan Bo‐Tao , Yuan Shen‐Gang 
Published: September 2010

AbstractThe active site of 3CL proteinase (3CLpro) for coronavirus was identified by comparing the crystal structures of human and porcine coronavirus. The inhibitor of the main protein of rhinovirus (Ag7088) could bind with 3CLpro of human coronavirus, then it was selected as the reference for molecular docking and database screening. The ligands from two databases were used to search potential lead structures with molecular docking. Several structures from natural products and ACD‐SC databases were found to have lower binding free energy with 3CLpro than that of Ag7088. These structures have similar hydrophobicity to Ag7088. They have complementary electrostatic potential and hydrogen bond acceptor and donor with 3CLpro, showing that the strategy of anti‐SARS drug design based on molecular docking and database screening is feasible.
Synthesis and crystal structure of N,N′‐dimethyldithio‐arbamato‐copper(I) polymer {[Cu(Me2dtc)]2}n
Authors: Zhang Wei , Zhu Xiu‐Lin , Cheng Zhen‐Ping , Zhu Jian , Lang Jian‐Ping , Lu Jian‐Mei 
Published: September 2010

AbstractReactions of CuSCN with tetramethylthiuram disulfide in CH3CN in the presence of styrene and N,N,N′,N″,N″‐pentamethyldiethylenetriamine gave rise to a new copper(I) complex ofN,N′‐dimethyldithiocabamate ([CU(S2CNMe2)]2)n. The title compound crystallized in the triclinic P‐1 space group with lattice parameters a=0.7610(4) nm, b=0.8911(4) nm, c=0.9268(5) nm, α=68.66(1)°, β=83.88(2)°, γ=79.31(2)°, V=0.5748(5) nm3, Z=2. The compound has a unique 1D chain structure composed of CuSCSCuSCS eight‐membered rings and a pair of CUS bonds, the structure of which has been determined by singlecrystal X‐ray crystallography. The isolation of this compound may provide some helpful information for the cause of the induction periods of the reverse atom transfer radical polymerization.
Co‐existing intermolecular halogen bonding and hydrogen bonding in the compound Trans‐5,10‐bis(1‐bromodifluoro‐acetyl‐1‐ethoxycarbonyl‐methylidene)thianthrene
Authors: Zhu Shi‐Fa , Zhu Shi‐Zheng , Liao Yuan‐Xi , Huang Chao‐Feng , Li Zhan‐Ting 
Published: September 2010

AbstractTrans‐5,10‐bis(1‐bromodifluoroacetyl‐1‐ethoxycarbonyl‐methylidene)thianthrene (1b) was prepared from the reaction of BrCF2COC(N2)CO2Et with thianthrene. X‐ray single crystal diffraction analysis showed that the intermolecular halogen bonding and hydrogen bonding coexisted in this compound. The bromine atom acted as an electron acceptor in the halogen bond and an electron donor in the hydrogen bond. It is the first example that the bromine atom acted as such a dual role in the hydrogen and halogen bond.
Stereoselective michael addition and michael‐aldol tandem reaction of diorganyl diselenides or disulfides with conjugated alkynones mediated by samarium diiodide
Authors: Zheng Xing‐Liang , Xu Xiao‐Liang , Zhang Yong‐Min 
Published: September 2010

AbstractStereoselective Michael addition and Michael‐aldol tandem reaction of diorganyl diselenides and disulfides with conjugated alkynones mediated by samarium diiodide were studied. The reaction temperature was critical for the stereoselectivity. β‐Organylselenoalkenones or β‐organylthioalkenones and γ‐organylselenoallylic alcohols or γ‐organylthioallylic alcohols were prepared in good yields.
Synthesis and cleavage studies of a 1,2‐dioxolane‐type peroxide
Authors: Liu He‐Hua , Jin Hong‐Xia , Wu Yi‐Kang 
Published: September 2010

AbstractA [1,2]dioxolane‐type peroxide was synthesized and tested for its cleavage behavior with Fe2+‐cysteinate as a simple model of biological redox species. No S‐alkylation product was observed.
Surface anchoring stabilized high strength disclinations in smectic C phase of a schiff‐base liquid crystal
Authors: Zhang Qi‐Zhen , Cui Li , Yin Xiao‐Ying 
Published: September 2010

AbstractThe observation of disclination cores of high strength S= −2, −3, −4, −5, −6, −7, −8 in a smectic C phase of Schiff‐base type liquid crystal (LC) is reported. The results of polarizing optical microscope (POM), differential scanning calorimetry (DSC) and wide‐angle X‐ray diffraction (WAXD) prove that the sample exhibits smectic C phase. It is suggested that the formation of the high strength disclination is mainly ascribed to the stronger anchoring of LC molecules on the substrate due to the formation of hydrogen bonds between the pendent hydroxyl of the LC molecule and the substrate.
Kinetic study on the exothermic first‐stage decomposition reaction of 2,4,8,10‐tetranitro‐2,4,8,10‐tetraazaspiro[5,5]undecane‐3,9‐dione
Authors: Hu Rong‐Zu , Zhao Feng‐Qi , Wang Bo‐Zhou , Gao Sheng‐Li , Zhu Chun‐Hua , Ning Bin‐Ke , Chen Pei , Luo Yang , Song Ji‐Rong , Shi Qi‐Zhen 
Published: September 2010

AbstractUnder linear temperature increase condition the thermal behavior and kinetic parameters of the exothermic fmt‐stage decomposition reaction of the title compound were studied by means of DSC and TG‐DTG. The empirical kinetic model function in differential form, apparent activation energy and pre‐exponential constant of this reaction are α0.122(1−α)0.528, 216.4 kJ·mol−1and 1020.51 s−1respectively. The critical temperature of thermal explosion of the compound is 222.25 °C. The values of Δ≠S, Δ≠H, and Δ≠Gand of this reaction are 108.3 J·mol−1K−1, 205.1 kJ·mol−1and 151.4 kJ·mol−1, respectively.
Preparation and study of thermal decomposition mechanism of Zn(Thr)(AcO)2·2H2O
Authors: Jiao Bao‐Juan , Zhao Feng‐Qi , Meng Xiang‐Xin , Hu Rong‐Zu , Gao Sheng‐Li 
Published: September 2010

AbstractThe complex of Zn(AcO)2·2H2O and threonine was prepared in the mixture solvent of water‐acetone, the composition of which was identified as Zn(Thr)(AcO)2·2H2O by chemical and elemental analyses. The complex was investigated by XRD, JR, TG‐DTG and DSC methods. The result of TG‐DTG shows that the thermal decomposition processes of the complex can be divided into three stages, which were dehydration (I), partial decomposition (II) and complete decomposition into ZnO (III). Dehydration enthalpy was 126.89 kj·mol−1, decomposition enthalpy of the stage (II) was 79.50 kJ·mol−1. The study of non‐isothermal kinetics shows that the mechanism of the dehydration stage was Maple Power of n=3/2, the apparent activation energy E was 145.32 kJ·mol−1 and the pre‐exponential factor A was 1.4125×1017 s−1, and that of ligand‐losting process was nucleation and growth mechanism (Avrami‐Erofeev equation n=1/2), its E was 189.33 kJ·mol−1, and A was 3.4674×s−1. The empirical kinetics model equations of the investigated processes were proposed.
Self‐assembly of carboxyl functionalized polystyrene nano‐spheres into close‐packed monolayers via chemical adsorption
Authors: Li Zhi‐Wei , Zhou Jing‐Fang , Zhang Zhi‐Jun , Dang Hong‐Xin 
Published: September 2010

AbstractThe polyacrylic acid functionalized polystyrene nanospheres were synthesized and self‐assembled into irregular, densely packed monolayers in non‐aqueous media. The polymer nanoparticles were chemically adhered to substrates. The morphologies of the resulting films were investigated. The impact of the volume fraction of alcohol in the mixed solvents on the particle adsorption and fabrication of nanosphere assembled films was examined.
Synthesis and characterization of diorganotin compounds {[R2Sn(ON=CHC6H5)]2O}2and crystal structure of {[(CsH5CH2)2Sn(ON=CHC6H5)]2O}2
Authors: Yin Han‐Dong , Xue Sheng‐Cai , Wang Qi‐Bao 
Published: September 2010

AbstractDiorganotin compounds ([R2Sn(ON=CHC6H5)]2O)2[R=C6H5CH2(1), 2‐FC6H4CH2(2), 4‐FC6H4CH2(3), 2‐ClC6H4CH2(4), 4‐ClC6H4CH2(5)] were synthesized by the reaction of R2SnO with HON=CHC6H5in 1:1 molar ratio in refluxing anhydrous benzene or toluene. They were characterized by elemental analysis, IR,1H NMR and119Sn NMR spectroscopy. And two sets of119Sn chemical shifts were observed in the119Sn NMR spectra of these compounds, indicating the presence of two types of environment around the tin atoms. The crystal structure of compound 1 was determined by X‐ray single crystal diffraction analysis. The results showed that the crystal of compound 1 belongs to a monoclinic system with space groupP21/cand unit cell dimensions:α=1.0718(9) nm,b=1.9666(17) nm,c=2.0480(17) nm, β=96.4371(14)°,Dc=1.450 g/cm3,Z=2,F(000)=1888,V=4.290(6) nm3, μ=1.206 mm−1,R1=0.0405,wR2=0.0786. The compound 1 belongs to centrosymmetric dimer structure mode with a four‐membered centralendo‐cyclicSn2O2unit in which the bridging oxygen atoms are hi‐coordinated. Each bridging oxygen atom also connects with an em‐cyclic tin atom. Theendo‐ andexo‐cyclic tin atoms are both five‐coordinated, and have coordination geometry of distorted trigonal bipyramid.
A convenient preparation of N‐Alkyl‐2,5‐dihydroisoxazoles from O‐Allyl oximes
Authors: Tang E , Lin Xiang‐Jin , Huang Xian 
Published: September 2010

AbstractThe organoselenium‐induced ring‐closure reaction of O‐allyl oximes gave cyclic iminium salts, which reacted with Grignard reagents to produce N‐alkyl‐4‐phenylselenoisoxazolidines. 2,5‐Dihydroisoxazoles could be obtained in good yields by subsequent selenoxide syn‐elimination.
Kinetics and mechanism of the thermal decomposition reaction of 3,3‐Bis(azidomethyl)oxetane/tetrahydrofuran copolymer
Authors: Luo Yang , Chen Pei , Zhao Feng‐Qi , Hu Rong‐Zu , Li Shang‐Wen , Gao Yin 
Published: September 2010

AbstractThe thermal behavior, mechanism and kinetic parameters of the exothermic decomposition reaction of 3,3‐bis(azidomethyl)oxetane/tetrahydrofuran (BAMO/THF) copolymer in a temperature‐programmed mode have been investigated by means of DSC, TG‐DTG, fast and lower thermolysis/FTIR and TG‐MS. The reaction mechanism was proposed. The apparent activation energy and pre‐exponential constant of exothermic decomposition reaction of the compound at 0.1 MPa are 167.04 kJ*mol−1 and 1014.41 s−1, respectively. The corresponding critical temperatures of thermal explosion obtained from the onset temperature Tc, and the peak temperature Tp are 223.20 and 245.78°C, respectively. The kinetic equation of the exothermic decomposition process of BAMO/THF at 0.1 MPa could be expressed as: \documentclass{article}\pagestyle{empty}\begin{document}$ \frac{{{\rm d}\alpha }}{{{\rm d}T}} = 10^{15.19} \left[{ - \ln (1 - \alpha)} \right]^{\frac{2}{3}} e^{ - 2.009 \times 10^4 /T} $\end{document}.
Synthesis and characterization of an unexpected asymmetric binuclear copper(I) complex containing 4‐vinyl‐pyridine
Authors: Jiang Kai , Zhao Dong , Guo Li‐Bing , Zhang Chuan‐Jian , Yang Rui‐Na 
Published: September 2010

AbstractThe asymmetric binuclear copper(I) complex [Cu2(dppm)2(C7H7N)(μ‐HCOO)](NO3) (dppm=Ph2PCH2PPh2, C7H7N=4‐vinyl‐pyridine) has been prepared and characterized by physicochemical and spectroscopic methods. The complex is photoluminescent at room temperature. It crystallizes in triclinic system, space groupP‐1 witha=1.2719(3) nm,b=1.8637(4) nm,c=1.1656(2) nm,a=97.16(3)°, β= 104.94(3)″, γ=89.39(3)°, V=2.648.1(9) nm3, Dc= 1.390 g.m−3, Z=2, μ=0.974 mm−1,R=0.0483 for 5716 independently observed reflections with I>2δ(I). The structure consists of [Cu2(dppm)2(C7H7N)(μ‐HCOO)]+cations and nitrate anions. The copper atoms show different coordination modes: Cu(1) displays a distorted trigonal and Cu(2) a tetrahedred geometry.
Synthesis, crystal structure and electrochemical property of 3a,4,5,8,9,9a,10,11‐Octahydro‐2H,3H‐1,6,7,12‐tetrathiaperylene (H10TTPR)
Authors: Shao Xiang‐Feng , Zhan Chuan‐Lang , Wang Cheng , Zhang De‐Qing , Xu Wei , Liu Cai‐Ming , Zhu Dao‐Ben 
Published: September 2010

AbstractH10TTPR was prepared starting from terephthalaldehyde and characterized. Crystal structure of H10TTPR and an intermediate compound 11 were determined by X‐ray diffraction analysis. A quasi‐reversible redox wave at 1.15 V (vs. SCE) was observed for H10TTPR, indicating that it is a weak electron donor.
Stereoselective synthesis of (Z)‐5‐(Trideca‐4‐enyl)resorcinol and gibbilimbols A—D
Authors: Zhou Ling , Li Yang , Cao Xiao‐Ping 
Published: September 2010

Abstract(Z)‐5–(Trideca‐4‐enyl)resorcinol (1) and gibbilimbols A—D (2–5) were synthesized in 47%‐60% yields over 6 steps from commercially available starting materials. The Wittig reaction of various alkyl phosphonium bromides with appropriate aldehydes in the presence of potassium ten‐butoxide (t‐BuOK) in anhydrous THF solution at room temperature served as the key step, and the result showed that only (Z)‐configuration olefins were formed by this procedure. The synthesis of the (Z)‐5‐(trideca‐4‐enyl)resorcinol (1) was reported for the first time.
Novel access to organostannane compounds under ultrasound irradiation
Authors: Zhao Zhi‐Quan , Sun Bin , Peng Li‐Zeng , Li Ying , Li Yu‐Lin 
Published: September 2010

AbstractA simple and efficient procedure has been developed for the synthesis of organostannane compounds by one‐pot reaction of stannane halides, magnesium turnings and organic halides in the presence of 1,2‐dibromoethane under ultrasound irradiation.
Formation, isolation and characterization of a new ruthenium complex in reaction of acetone masked terminal alkynone with transfer hydrogenation catalyst
Authors: Guo Min‐Jie , Li Dao , Sun Yan‐Hui , Cheng Jiang , Zhang Zhao‐Guo 
Published: September 2010

AbstractReaction of [1S,2S‐(Ts‐diphen)Ru(II)(p‐cymene)] (1S,2S‐Ts‐diphen = 1S,2S‐N‐tosyl‐l,2‐diphenylethylenediamine) and 2‐hydroxy‐2‐methyl‐non‐3‐yn‐5‐one under transfer hydrogenation condition gave a ruthenium complex bearing a 2,5‐dihydrofuran moiety. The complex was characterized and a possible mechanism for the formation of the complex was proposed.
Stereoselective synthesis of 1,3‐enynylstannanes via palladium catalyzed cross‐coupling reactions of (Z)‐α‐bromovinylstannanes
Authors: Cai Ming‐Zhong , Zhang Rong‐Li , Zhao Hong 
Published: September 2010

AbstractBased on the different reactivity of stannyl and bromo groups, (Z)‐α‐bromovinylstannanes can undergo the cross‐coupling reaction with alkynyl Grignard reagents in the presence of tetrakis(triphenylphosphine)palladium(O) catalyst in THF at room temperature to afford stereoselectively 1,3‐enynylstannanes in good yields.
Synthesis of novel 1,3‐dioxolane nucleoside analogues
Authors: Cai Dong‐Mei , Lin Kun‐Hua , Li Mirtg‐Zong , Wen Ji‐Wu , Li Hong‐Yan , You Tian‐Pa 
Published: September 2010

AbstractNovel 1,3‐dioxolane C‐nucleoside analogues of tiazofurin 2‐(2‐hydroxymethyl‐1,3‐dioxolan‐4‐yl)‐l,3‐thiazole‐4‐carboxamide as well as N‐nucleoside analogues of substituted imidazoles 1‐(2‐hydroxymethyl‐1,3‐dioxolan‐4‐yl)‐4‐nitroimidazole and 1‐(2‐hydroxymethyl‐1,3‐dioxolan‐4‐yl)‐4,5‐dicyanoimidazole were synthesized from methyl acrylate through a multistep procedure. Their structures were confirmed by IR, 1H NMR, 13C NMR spectra and elemental analysis.
Ammonium chloride promoted palladium‐catalyzed Ullmann coupling of aryl bromide
Authors: Li Jin‐Heng , Liang Yun , Liu Wen‐Jie , Tang Shi , Xie Ye‐Xiang 
Published: September 2010

AbstractIn water, ammonium chloride was found to promote palladium‐catalyzed Ullmann coupling reactions of aryl bromides. In the presence of Pd/C, zinc, NH4Cl, and water, coupling of various aryl bromides was carried out smoothly to afford the corresponding homocoupling products in moderate yields.
Non‐isothermal kinetics of the dehydration process of Na2MoO4·2H2O
Authors: Zhang Jian‐Jun , Zhang Xiu‐Fang , Wu Ke‐Zhong , Ren Ning , Zhou Xue , Liu Xiao‐Di 
Published: September 2010

AbstractThe dehydration process of Na2MoO4·2H2O and its kinetics have been studied by TG‐DTG. Using Malek method, SB(m,n) was defined as the kinetic model of the dehydration process. The corresponding kinetic and thermodynamic parameters were obtained.
A new kinetic method of processing TA data
Authors: Zhang Jian‐Jun , Ren Ning 
Published: September 2010

AbstractA new method of investigating the kinetic parameters and mechanism functions of a solid phase reaction is presented. This method is to analyze the data based on the use of these data at the same temperature and the same degree of conversion on a series of TA curves with different heating rates, so that the kinetic triplet–‐the activation energy E, the pre‐exponential factor A and the analytical form of the function of conversion f (α) can be obtained. The main advantage of this method is that the values of E and f(α) are obtained respectively, and the determination of f (α) is not under the influence of the value of E and the calculation of the value of E is not influenced by the f (α) either.
Naphthalene Degradation Kinetics of Micrococcus sp., Isolated from Activated Sludge
Authors: Jegan Josephraj , Vijayaraghavan Kuppusamy , Senthilkumar Ramalingham , Velan Manickam 
Published: September 2010

AbstractBiodegradation of naphthalene by Micrococcus sp., isolated from the effluent of an activated sludge plant, was studied. The effects of pH (5–8), glucose concentration (100–1000 mg/L) and inoculum concentrations (1–5%) on the growth and naphthalene degradation potential of Micrococcus sp. were investigated. Maximum naphthalene degradation and subsequent high microbial growth were observed at optimum pH (pH 7), glucose concentration (500 mg/L) and inoculum concentration (3%). To investigate the maximum naphthalene tolerance potential of Micrococcus sp., very high concentrations of naphthalene (500–5000 mg/L) were used in the presence of non‐ionic surfactants. The examined surfactants (Triton X‐100 and Tween‐80) increased the bioavailability of naphthalene to the microbes and Complete naphthalene degradation by Micrococcus sp. was observed at an initial naphthalene concentration of 500 mg/L. However, the degradation potential decreases as the naphthalene concentration increases. Very high naphthalene concentrations also affected the growth of microbes and the corresponding substrate inhibition kinetics was described using four models (Haldane, Webb, Edward and Aiba). Based on correlation coefficient and percentage error values, all four substrate kinetic models were able to describe the dynamic behavior of naphthalene biodegradation by Micrococcus sp.
Equilibrium, Thermodynamic, and Kinetic Studies on Lead (II) Biosorption from Aqueous Solution by Saccharomyces cerevisiae Biomass
Authors: Ghaedi Mehrorang , Ghezelbash Gholam Reza , Marahel Farzaneh , Ehsanipour Shiva , Najibi Asma , Soylak Mustafa 
Published: September 2010

AbstractThis paper presents a biosorption procedure for the preconcentration of Pb2+ ions using Saccharomyces cerevisiae biomass. The influence of several factors including pH, biomass dosage, contact time, and temperature on biosorption efficiency were optimized. At optimum value of all the equilibrium, thermodynamic, and kinetic parameters of Pb2+ ion biosorption was investigated by testing the Langmuir and Freundlich models and first and second order kinetic models were applied. The biosorption capacity of S. cerevisiae biomass was determined 89.6 mg/g, while the retained Pb2+ ions by S. cerevisiae were reversibly eluted using 5 mol/L HNO3. Due to the high stability of S. cerevisiae the applied biomass can be used successively ten times with a slightly decrease (about 20%) in the recovery of Pb2+ ions. The calculated thermodynamic parameters, ΔG°, ΔH°, and ΔS° showed that the biosorption of Pb2+ ion onto S. cerevisiae biomass was feasible, spontaneous, and endothermic under examined conditions. The results of kinetic analysis showed that the biosorption processes of Pb2+ ions onto S. cerevisiae biomass followed pseudo second order kinetics.
Isotherm Study of Phosphorus Uptake from Aqueous Solution Using Aluminum Oxide
Authors: Zhang Liang , Hong Song , He Jing , Gan Fuxing , Ho Yuh‐Shan 
Published: September 2010

AbstractAluminum oxide, which could be an alternative filter media for phosphorus uptake from aqueous solution, was selected as an adsorbent for the isotherm study of phosphorus uptake from aqueous solution. Batch method was adopted to investigate the adsorption behavior of phosphorus onto aluminum oxide. The Langmuir, Freundlich, and Redlich–Peterson isotherms were used to analyze the experimental data by both the linear and nonlinear regression methods. The adsorption experiment was conducted at various temperatures, to choose the appropriate method and obtain the creditable adsorption parameters for phosphorus uptake studies. The results indicated that the nonlinear regression method might be a better way to compare the best‐fitting isotherm and obtain the parameters for the adsorption of phosphorus onto aluminum oxide. Both the Redlich–Peterson and the Freundlich isotherms have high coefficients of determination for the adsorption of phosphorus onto aluminum oxide at various temperatures. In addition, a new relationship between the Redlich–Peterson and the Freundlich isotherm parameters was presented.