نتایج جستجو برای: Dissolution entropy

تعداد نتایج: 86206  

The present work concerns with an investigation on the solubility of cis,cis-muconic acid dissolution in different polar solvents by characterizing and modeling the dissolution as a function of temperature. Water, ethanol, 2-propanol and acetic acid have been investigated as solvents in the range temperatures from a 298.15 to 348.15 K. Owing to the absence of cis,cis-muconic acid solubility...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پایه 1391

bekenstein and hawking by introducing temperature and every black hole has entropy and using the first law of thermodynamic for black holes showed that this entropy changes with the event horizon surface. bekenstein and hawking entropy equation is valid for the black holes obeying einstein general relativity theory. however, from one side einstein relativity in some cases fails to explain expe...

Journal: :Science China. Materials 2022

Annealing is widely used in the thermomechanical processing of metallic alloys. Usually, ductility enhances while strength decreases because defects annihilate with increase annealing temperature. Here, we report a simultaneous improvement and TiZrNbTa high-entropy alloy by promoting phase dissolution increasing When performed from 800 to 1250°C, tensile yield increases 40% 1003 ± 16 MPa, elong...

Journal: :Reactions 2022

The equilibrium solubility of benzoic acid in water and ethanol, as well nine {ethanol (1) + (2)} mixtures, was determined from T = (293.15 to 323.15) K. Benzoic mole fraction these aqueous-ethanolic mixtures adequately correlated with some well-known correlation/prediction models, obtaining mean percentage deviations 2.2 7.6%. Apparent thermodynamic quantities, namely, Gibbs energy, enthalpy, ...

Journal: :Advanced materials 2015
Amaia Diaz de Zerio Mendaza Armantas Melianas Stephan Rossbauer Olof Bäcke Lars Nordstierna Paul Erhart Eva Olsson Thomas D Anthopoulos Olle Inganäs Christian Müller

The solubility of pristine fullerenes can be enhanced by mixing C60 and C70 due to the associated increase in configurational entropy. This "entropic dissolution" allows the preparation of field-effect transistors with an electron mobility of 1 cm(2) V(-1) s(-1) and polymer solar cells with a highly reproducible power-conversion efficiency of 6%, as well as a thermally stable active layer.

Journal: :Food & function 2017
Ellen S Bradley Christopher H Hendon

The formation of aqueous intermolecular dimers is governed by both the nature and strength of the intermolecular interactions and the entropy of dissolution. The former interaction energies are determined by the polarity of the solvent and the functionality of the solute. Using quantum chemical methods, we probe the energetics of dimer formation of representative compounds found in coffee well ...

Journal: :Advances in colloid and interface science 2011
Quan Gan Yiran Zou David Rooney Paul Nancarrow Jillian Thompson Lizhe Liang Moira Lewis

Supported ionic liquid membranes (SILMs) has the potential to be a new technological platform for gas/organic vapour separation because of the unique non-volatile nature and discriminating gas dissolution properties of room temperature ionic liquids (ILs). This work starts with an examination of gas dissolution and transport properties in bulk imidazulium cation based ionic liquids [C(n)mim][NT...

Corrosion results in hazardous and expensive damage to pipelines, vehicles, water and wastewater systems, and even home appliances. One of the most extensively practical methods for protecting metals and alloys against corrosion is to use organic inhibitors. The inhibition capability of 2-Mercaptobenzothiazole (2-MBT) against the corrosion of carbon steel in a 2 M NaCl solution was examined by ...

Journal: :Physical chemistry chemical physics : PCCP 2015
Stefan Zahn Annegret Stark

The dissolution of 1-alkyl-3-methylimidazolium chloride ILs with short alkyl chains in trihexyltetradecylphosphonium chloride does not only exhibit a large negative entropy. Also, in the resulting mixtures, the phosphonium cation diffuses faster than the much smaller imidazolium cation. Both unexpected features originate from the formation of a large symmetric ion cluster cage in which the imid...

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