Current physical chemistry最新文献

{"title":"Meet Our Editorial Board Member","authors":"Yingjia Zhang","doi":"10.2174/187794681103211210121205","DOIUrl":"https://doi.org/10.2174/187794681103211210121205","url":null,"abstract":"<jats:sec>\u0000<jats:title />\u0000<jats:p />\u0000</jats:sec>","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46805919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Applications of Flory’s Statistical Theory to Ionic Liquids in the Extended Pressure Range and at Different Temperatures","authors":"R. Kant, S. C. Shrivastava, S. Srivastava, J. D. Pandey","doi":"10.2174/1877946811666210914123739","DOIUrl":"https://doi.org/10.2174/1877946811666210914123739","url":null,"abstract":"\u0000\u0000Flory’s statistical theory (FST) for the first time, has been applied successfully to two pure ionic liquids, [C3mim][NTf2] and [C5mim][NTf2] over an extended range of pressure (0.10 – 59.9) MPa and at different temperatures (298.15 – 333.15) K . \u0000\u0000\u0000\u0000\u0000Density and sound speed data have been employed to compute a number of useful and important properties of these ionic liquids in the light of FST. Using Flory parameters (P*, T*, V*, P̃, T̃, Ṽ) the expression for the surface tension (σ) has been deduced in the form σ = σ* σ᷉ (Ṽ), σ* and σ᷉ (Ṽ) being the characteristic and reduced values of surface tension. Since the experimental σ of liquids is not known, the validity of FST has been tested by calculating u using four different u-ρ- σ correlations, namely Auerbach (1948), Altenberg (1950) Singh et al (1997) and Modified Auerbach (2016). \u0000\u0000\u0000\u0000\u0000A number of useful and important properties of ionic liquids, under the varying physical conditions, have been deduced and compared with the observed ones with quite satisfactory agreement. Such properties include Pint, van der Waals constants (a & b), parachor [P], Eötvas constant (kB), energy (∆EV) and heat of vaporization (∆HV), cohesive energy density (ced), polarity index (n) and solubility parameter (δ). \u0000\u0000\u0000\u0000\u0000 Thus the validity of FST to two ionic liquids under the present study, has been confirmed.\u0000\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48252784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accurate Assessment of Joule-Thomson Inversion Temperature at Zero Pressure of Imperfect Gases","authors":"B. Mamedov, E. Somuncu","doi":"10.2174/1877946811666210708111812","DOIUrl":"https://doi.org/10.2174/1877946811666210708111812","url":null,"abstract":"\u0000\u0000The aim of this work is to propose an approach for estimating the Joule-Thomson coefficient as an important parameter necessary to the study of changes in fluid temperature at a given change in pressure at constant enthalpy.\u0000\u0000\u0000\u0000The analytical approach presented in this work is very appropriate for detailed studies of the Joule-Thomson inversion temperature at zero pressure for arbitrary temperature values.\u0000\u0000\u0000\u0000A new approach is suggested for the accurate determination of the Joule-Thomson inversion temperature at zero pressure using the virial coefficient of the Lennard-Jones (12-6) potential. \u0000\u0000\u0000\u0000The usefulness and efficiency of the method are tested by application to various gase Ar, He,Ne,H2,O2,CO2CO,CH4,Xe, Kr,N2 and Air. The results obtained are in good agreement with other approximation and experimental data.\u0000\u0000\u0000\u0000The suggested formula enables correct and rapid calculation of the JT inversion temperature at zero pressure.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45125686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Meet the Editorial Board Member","authors":"R. Rubio","doi":"10.2174/187794681102211015101406","DOIUrl":"https://doi.org/10.2174/187794681102211015101406","url":null,"abstract":"<jats:sec>\u0000<jats:title />\u0000<jats:p />\u0000</jats:sec>","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46834941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-Covalent interaction between Ionic liquid (1-ethyl-3-methylimidazolium chloride-aluminum chloride) and pure alcohols","authors":"S. Das, P. Karmakar, Deepak Ekka, N. Deenadayalu, M. Roy","doi":"10.2174/1877946811666210623163554","DOIUrl":"https://doi.org/10.2174/1877946811666210623163554","url":null,"abstract":"\u0000\u0000The non-covalent molecular interactions of 1-Ethyl-3-methylimidazolium chloride-aluminum chloride and pure alcohols attract attention in the industry, academic and research. Chemists, engineers, designers, and some researchers are much interested in the accessibility of its trustworthy databases. \u0000\u0000\u0000\u00001-Ethyl-3-methylimidazolium chloride-aluminum chloride is interacting with pure alcohols with non-covalent interactions. Physicochemical properties with their convincing data interpreting the interactions occurring there.\u0000\u0000\u0000\u0000For that limiting apparent molar volume, molar refraction, and limiting apparent molar isentropic compressibility of the binary systems viz., ([EMIm]Cl/AlCl3) +methanol, ([EMIm]Cl/AlCl3) +ethanol, ([EMIm]Cl/AlCl3) +1-propanol, and ([EMIm]Cl/AlCl3)+1-butanol have been calculated using physicochemical properties i.e.,. density, refractive index, and speed of sound, respectively, within the temperature range T=293.15K-318.15K (with the interval of 5K).\u0000\u0000\u0000\u0000The ionic liquid strongly interacts with 1-butanol (106ϕ_v^o=874.52 m3 mol-1, 106•RM = 211.13 m3 mol-1, and 10-11•ϕ_k^o= -0.10 m3 mol-1 Pa-1, 108•((〖∂ϕ〗_E^o)⁄∂T)_p = 1.52 m3 mol-1 K-2) than other chosen primary alcohol at a higher temperature (318.15K). Among individual ions, the 106•ϕ_(V(ion))^o is higher for 〖AlCl_(4 )〗^-(522.96 m3 mol-1) than [EMIm]^+(351.56 m3 mol-1) at high temperature (318.15K) in 1-butanol.\u0000\u0000\u0000\u0000The molecular interactions occurring between the ionic liquid and solvent molecules are due to the structure-making capacity that causes by intermolecular forces and non-covalent interactions. Where, the 1-butanol strongly interact with ionic liquids. In beween the ions, the anaion interaction is greater than cation to solvents.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49537810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preface","authors":"K. Jalkanen","doi":"10.2174/187794681101210128124239","DOIUrl":"https://doi.org/10.2174/187794681101210128124239","url":null,"abstract":"","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41791343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Meet Our Editorial Board Member","authors":"J. R. Gomes","doi":"10.2174/187794681101210128124327","DOIUrl":"https://doi.org/10.2174/187794681101210128124327","url":null,"abstract":"","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47376437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Thermodynamic and Optical Properties of Sixteen Ionic Liquids at Different Temperature","authors":"Ramakant, S. C. Shrivastava, S. Srivastava, J. D. Pandey","doi":"10.2174/1877946810999201229144555","DOIUrl":"https://doi.org/10.2174/1877946810999201229144555","url":null,"abstract":"\u0000\u0000Based on the dimensional analysis ρ-u- thermodynamic and ρ-u- optical properties correlations have been applied\u0000to sixteen ionic liquids at different temperatures. The objective of the present work is to employ these relations to ionic\u0000liquids. The experimental values of ρ and u have been reported in the literature at different temperatures. We have computed\u0000thermal expansivity (α), isothermal compressibility (βT), heat capacities ratio (γ), internal pressure (Pint), pseudo-Grüneisen\u0000parameter (Г), energy of vaporization (ΔEV), enthalpy of vaporization (ΔHV), cohesive energy density (ced), solubility parameter (δ), refractive index (n), molar refraction (RM) and polarisability (αp) for these liquids. Results are found to quite\u0000satisfactory. Keeping in view of uncertainty in the experimental values of ρ and u, as well as some approximations used, the\u0000agreement between experimental and theoretical values is found to be quite satisfactory. The results are discussed critically.\u0000\u0000\u0000\u0000 In the present work, we are applying the ρ-u thermodynamic and ρ-u- optical properties correlations to sixteen\u0000ionic liquids to estimate thermodynamic and optical properties at different temperature. The experimental values of ρ and u\u0000have been reported in the literature at different temperatures. We have computed α, βT, γ, Pint, Г, ΔEV, ΔHV, ced, δ, n, RM\u0000and αp for these liquids.\u0000\u0000\u0000\u0000Correlations between density-sound velocity and several thermodynamic properties have been derived on the basis\u0000of dimensional analysis On the basis of dimensional analysis, a number of useful and important thermodynamic relations\u0000were deduced in terms of density (ρ) and speed of sound (u).\u0000\u0000\u0000\u0000Results are found to quite satisfactory. Keeping in view of uncertainty in the experimental values of ρ and u, as well\u0000as some approximations used, the agreement between experimental and theoretical values is found to be quite satisfactory.\u0000\u0000\u0000\u0000 Density (ρ) and ultrasonic speed (u) data of sixteen RTILs at different temperatures have been taken from the\u0000literature. Calculated values of α, βT, Pint, γ, CP-CV, and, Г obtained from empirical relations. The experimental values of α\u0000are given for making a comparative study.\u0000\u0000\u0000\u0000Based on the dimensional analysis our recently developed correlations between ρ-u- thermodynamic and ρ-uoptical properties have been found to be quite successful when applied to sixteen ionic liquids for the first time. α, βT, γ,\u0000Pint, ΔEVap, ΔHVap, ced, δ as well as RM and αp were calculated at various temperatures.\u0000\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41637112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of solute-solute and solute-solvent interaction of pyrimidine5-carbonitrile in aqueous DMSO at 298.15 K.","authors":"J. Aher, A. Kardel, D. D. Lokhande, M. Gaware, A. Bhagare","doi":"10.2174/1877946810999201222115712","DOIUrl":"https://doi.org/10.2174/1877946810999201222115712","url":null,"abstract":"\u0000\u0000 In this reported work, we have used 80 % aqueous dimethyl sulphoxide (DMSO) for density and\u0000viscosity measurement of pyrimidine-5-carbonitrile at 298.15 K. The obtained experimental results shows that as concentration increases density and viscosity increases. From the results of density and viscosity, we have found apparent molar\u0000volume, limiting apparent molar volume, semi-empirical parameters, Falkenhagen coefficients and Jones Dole coefficients.\u0000\u0000\u0000\u0000 The apparent molar volume and limiting apparent molar volume having negative values indicated electostrictive\u0000solvation of ions and weak or absence of ion solvent interactions respectively.\u0000\u0000\u0000\u0000Falkenhagen coefficients is independent of concentration having positive value has shown strong\u0000solute-solute interactions and Jones-Dole coefficients having negative value has shown weak solute-solvent interactions.\u0000The strong solute-solute interactions were presents in A-1 as compared to A-2 compound because high electronegativity of\u0000oxygen atom. These parameters had given idea about molecular interactions such as solute-solute, solute-solvent and solvent-solvent.\u0000\u0000\u0000\u0000We have reported density and viscosity study of 4-amino-2-hydroxy-6-phenylpyrimidine-5-carbonitrile and 4-\u0000amino-2-mercapto-6-phenylpyrimidine-5-carbonitrile in 80 % aqueous DMSO solution at 298.15 K temperature. It has been\u0000observed that Strong molecular association in A-2 as compared to A-1 due to negative values of Øv.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42664322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Meet Our Editorial Board Member","authors":"Zuoti Xie","doi":"10.2174/187794681003200918091721","DOIUrl":"https://doi.org/10.2174/187794681003200918091721","url":null,"abstract":"","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68154095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}