Journal of Applied Solution Chemistry and Modeling最新文献_第7页

Volumetric Properties of Cyclic Alanylalanine in Aqueous Solutions of MnCl2, NiCl2 and ZnCl2 at Temperatures T = (293.15 to 313.15) K 温度T = (293.15 ~ 313.15) K时环丙氨酸在MnCl2、NiCl2和ZnCl2水溶液中的体积性质

Journal of Applied Solution Chemistry and Modeling Pub Date : 2015-02-25 DOI: 10.6000/1929-5030.2015.04.01.4

V. Karanth, D. Bhat

引用次数: 0

Effect of Operating Conditions of the Extraction Process on the Physical Properties of Lubricating Oil 萃取工艺操作条件对润滑油物理性质的影响

Journal of Applied Solution Chemistry and Modeling Pub Date : 2015-02-25 DOI: 10.6000/1929-5030.2015.04.01.1

A. Mehrkesh, T. Tavakoli, M. Hatamipour

引用次数: 4

Determination of pKa Values for Acrylic, Methacrylic and Itaconic Acids by 1H and 13C NMR in Deuterated Water 用1H和13C NMR测定氘水中丙烯酸、甲基丙烯酸和衣康酸的pKa值

Journal of Applied Solution Chemistry and Modeling Pub Date : 2015-02-25 DOI: 10.6000/1929-5030.2015.04.01.2

E. L. Ibarra-Montaño, Norma Rodríguez-Laguna, Aníbal Sánchez-Hernández, A. Rojas-Hernández

引用次数: 44

Effects of Metal Ions on H2 Generation during Photolysis of Suspended TiO2 in Aqueous Systems 金属离子对水中悬浮TiO2光解过程中H2生成的影响

Journal of Applied Solution Chemistry and Modeling Pub Date : 2015-02-25 DOI: 10.6000/1929-5030.2015.04.01.5

G. Dey

{"title":"Effects of Metal Ions on H2 Generation during Photolysis of Suspended TiO2 in Aqueous Systems","authors":"G. Dey","doi":"10.6000/1929-5030.2015.04.01.5","DOIUrl":"https://doi.org/10.6000/1929-5030.2015.04.01.5","url":null,"abstract":"Nowadays, photocatalysis is being applied as a promising technique for decontamination, purification, deodorization, etc. of polluted air and wastewaters. This technique attempts also to generate renewable and non-polluting fuels utilizing various carbon and hydrogen sources. In this context, studies on photo-catalytic generation of H 2 using 0.1% w/v TiO 2 photo catalyst as a suspension in water was carried out using 350 nm light. This was explored further in presence of various metal ions such as Ag + , Cu 2+ , Fe 2+ , Au 3+ and V 5+ at different ambient such as air and CO 2 , in presence of a hole scavenger (2-propanol and formic acid). H 2 yields in CO 2 -purged systems as analyzed in GC-TCD were reasonably higher, and increased further when metal ions were added into the systems. Based on H 2 yields, HCOOH was found to be a more supportive hole scavenger as compared to 2-propanol in metal ions containing systems. Besides the formation of low to high concentrations of various gaseous products, nanoparticles of gold, silver and copper were also observed as photolysis products. This indicated that the presence of both reduced metal ions and their in-situ generated nanoparticles at various stages either in the free/unbound and/or associated with TiO 2 photocatalyst in aqueous systems, together play a significant role in enhancing the H 2 yields.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"35 1","pages":"63-71"},"PeriodicalIF":0.0,"publicationDate":"2015-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80877007","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}

引用次数: 0

The Interrelationship between Thermodynamics and Energetics: The True Sense of Equilibrium Thermodynamics 热力学与能量学的相互关系:平衡热力学的真正意义

Journal of Applied Solution Chemistry and Modeling Pub Date : 2015-02-25 DOI: 10.6000/1929-5030.2015.04.01.3

E. Starikov

引用次数: 3

Pyrrolidinyl Group as Charge Donor for the Excited State Intramolecular Chargetransferin 3-(4-methoxyphenyl)-1-(4-(pyrrolidin-1-yl) phenyl) Prop-2-en-1-one 吡咯烷基作为激发态分子内电荷转移的电荷供体:3-(4-甲氧基苯基)-1-(4-(吡咯烷基-1-基)苯基)Prop-2-en-1-one

Journal of Applied Solution Chemistry and Modeling Pub Date : 2015-02-25 DOI: 10.6000/1929-5030.2015.04.01.6

N. Mishra, K. Chaudhary, S. Awasthi

{"title":"Pyrrolidinyl Group as Charge Donor for the Excited State Intramolecular Chargetransferin 3-(4-methoxyphenyl)-1-(4-(pyrrolidin-1-yl) phenyl) Prop-2-en-1-one","authors":"N. Mishra, K. Chaudhary, S. Awasthi","doi":"10.6000/1929-5030.2015.04.01.6","DOIUrl":"https://doi.org/10.6000/1929-5030.2015.04.01.6","url":null,"abstract":"The absorption and steady state emission properties of a chemically synthesized chalcone, 3-(4-methoxyphenyl)-1-(4-(pyrrolidin-1-yl) phenyl) prop-2-en-1-one (MPPP) containing asymmetrical donor and acceptor groups has been investigated both experimentally and theoretically. The ground state, MPPP has a significant intramolecular charge transfer (ICT) character and a great sensitivity to the hydrogen bond donating ability of the medium as reflected from the absorption spectra in pure non polar, polar and neutral solvents. On the other hand, its excited singlet state exhibits high ICT characters as manifested by the drastic solvatochromic effects. These results are consistent with the data. The absorption spectra of the compound MPPP undergoes minor changes with increasing polarity of the solvents and the fluorescence spectra experiences a distinct bathochromic shifts in the both position and fluorescence quantum yields, increases reaching a maximum before decrease with increasing the solvent effects. The quantum yields decrease with increase in the solvent polarity. The magnitude of change in the dipole moment was also calculated using Austin Model 1 (AM1). These results suggest that the evidence about the intramolecular charge transfer in the emitting singlet state of this compound. The solvent dependence of quantum yields of MPPP was interpreted on the basis of positive and negative solvatokinetic as well as hydrogen bonding effects. Intramolecular charge (ICT) transfer took place from pyrrolidine nitrogen to α, β unsaturated carbonyl in the ground state.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"49 1","pages":"72-82"},"PeriodicalIF":0.0,"publicationDate":"2015-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77161197","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}

引用次数: 1

The Radical-Chain Addition to Double Molecular Bonds by the Nonbranched-Chain Mechanism: Low-Reactive Free Radicals Shortening Kinetic Chains 非支链机制下自由基链对双分子键的加成:低反应自由基缩短动力学链

Journal of Applied Solution Chemistry and Modeling Pub Date : 2014-12-17 DOI: 10.6000/1929-5030.2014.03.04.3

M. M. Silaev

{"title":"The Radical-Chain Addition to Double Molecular Bonds by the Nonbranched-Chain Mechanism: Low-Reactive Free Radicals Shortening Kinetic Chains","authors":"M. M. Silaev","doi":"10.6000/1929-5030.2014.03.04.3","DOIUrl":"https://doi.org/10.6000/1929-5030.2014.03.04.3","url":null,"abstract":"Five reaction schemes are suggested for the initiated nonbranched-chain addition of free radicals to the multiple bonds of the unsaturated compounds. The proposed schemes include the reaction competing with chain propagation reactions through a reactive free radical. The chain evolution stage in these schemes involves three or four types of free radicals. One of them is relatively low-reactive and inhibits the chain process by shortening of the kinetic chain length. Based on the suggested schemes, nine rate equations (containing one to three parameters to be determined directly) are deduced using quasi-steady-state treatment. These equations provide good fits for the nonmonotonic (peaking) dependences of the formation rates of the molecular products (1:1 adducts) on the concentration of the unsaturated component in binary systems consisting of a saturated component (hydrocarbon, alcohol, etc.) and an unsaturated component (olefin, allyl alcohol, formaldehyde, or dioxygen). The unsaturated compound in these systems is both a reactant and an autoinhibitor generating low-reactive free radicals. A similar kinetic description is applicable to the nonbranched-chain process of the free-radical hydrogen oxidation, in which the oxygen with the increase of its concentration begins to act as an oxidation autoingibitor (or an antioxidant). The energetics of the key radical-molecule reactions is considered.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"3 1","pages":"202-222"},"PeriodicalIF":0.0,"publicationDate":"2014-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77721753","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}

引用次数: 1

Solubility of CO2 in Brine and Reservoir Oil for Depleted Reservoirs in China 中国衰竭油藏CO2在盐水和油藏油中的溶解度

Journal of Applied Solution Chemistry and Modeling Pub Date : 2014-12-17 DOI: 10.6000/1929-5030.2014.03.04.2

Ke Zhang, D. Ma, Shi Li, Xinglong Chen

{"title":"Solubility of CO2 in Brine and Reservoir Oil for Depleted Reservoirs in China","authors":"Ke Zhang, D. Ma, Shi Li, Xinglong Chen","doi":"10.6000/1929-5030.2014.03.04.2","DOIUrl":"https://doi.org/10.6000/1929-5030.2014.03.04.2","url":null,"abstract":"Many countries play an important role to carbon capture, utilization, and Storage (CCUS) to reduce emission. Geological storage is an important approach to cope with climate change. Live oil combined with saline aquifers and gas reservoirs are among the candidates for carbon dioxide (CO 2 ) sequestration, owing to their proven sealing capabilities and characterization. CO 2 mainly from power industrial was captured to improve oil recovery in some oilfields in China, and solubility is a key factor to evaluate storage ability of reservoir and saline aquifer. In this paper, CO 2 sequestration mechanisms in deplete reservoir and saline aquifer were explained. An experimental method to test solubility of CO 2 in emulsion system of liver oil and brine was developed. The experimental results showed that with the salinity increased, the solubility of CO 2 in reservoir oil increased slightly, and the solubility of CO 2 in brine decreased. Salinity has little impact on solubility of CO 2 in reservoir oil. With the pressure increased, the solubility of CO 2 in reservoir oil and brine both increased. Molecular diameter of reservoir oil and white oil have inverse proportion relationship with the solubility Research on solubility of CO 2 in brine and reservoir oil for depleted reservoir in China enabled us to better predict and deal with the challenges for rapid development of carbon storage.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"80 1","pages":"194-201"},"PeriodicalIF":0.0,"publicationDate":"2014-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80879258","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}

引用次数: 0

Comparison of Dissolution Profiles of Furosemide Tablets Available in the Argentinian Market 阿根廷市场上速尿片溶出度的比较

Journal of Applied Solution Chemistry and Modeling Pub Date : 2014-12-17 DOI: 10.6000/1929-5030.2014.03.04.1

Y. Han, Laura D. Simionato, Romina G. Calvo, M. B. Mattei, A. Segall

引用次数: 5

Nonbranched-Chain Oxidation: Low-Reactive RO•4 and HO•4 1:2 Adduct Radicals Shortening Kinetic Chains 非支链氧化:低反应性RO•4和HO•4 1:2加合自由基缩短动力学链

Journal of Applied Solution Chemistry and Modeling Pub Date : 2014-12-17 DOI: 10.6000/1929-5030.2014.03.04.5

M. M. Silaev

{"title":"Nonbranched-Chain Oxidation: Low-Reactive RO•4 and HO•4 1:2 Adduct Radicals Shortening Kinetic Chains","authors":"M. M. Silaev","doi":"10.6000/1929-5030.2014.03.04.5","DOIUrl":"https://doi.org/10.6000/1929-5030.2014.03.04.5","url":null,"abstract":"New reaction scheme is suggested for the initiated nonbranched-chain addition of free radicals to the multiple bond of the molecular oxygen. The scheme includes the reaction competing with chain propagation reactions through a reactive free radical. The chain evolution stage in this scheme involves a few of free radicals, one of which (tetraoxyl) is relatively low-reactive and inhibits the chain process by shortening of the kinetic chain length. Based on the proposed scheme rate equations (containing one to three parameters to be determined directly) are deduced using quasi-steady-state treatment. The kinetic description with use the obtained rate equations is applied to the I³-induced nonbranched-chain processes of the free-radical oxidation of liquid o -xylene at 373 K and hydrogen dissolved in water containing different amounts of oxygen at 296 K. In these processes the oxygen with the increase of its concentration begins to act as an oxidation autoingibitor (or an antioxidant), and the rate of peroxide formation as a function of the dissolved oxygen concentration has a maximum. The heat effects are compared for the overall reactions of dissociation of simple alkylperoxyl (exothermic) and alkoxyl (endothermic) free radicals in the gas phase. Possible nonchain pathways of the free-radical oxidation of hydrogen and the routes of ozone decay from the energetic standpoint via the reaction with the hydroxyl free radical in the upper atmosphere (including the addition yielding the hydrotetraoxyl free radical, which can be an intermediate in the sequence of conversions of biologically hazardous UV radiation energy) were examined. The energetics of the key radical-molecule reactions is considered.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"56 1","pages":"231-241"},"PeriodicalIF":0.0,"publicationDate":"2014-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88414672","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}

引用次数: 1