Sangita Sharma

A dechlorination pathway for synthesis of horn shaped carbon nanotubes and its adsorption properties for CO2, CH4, CO and N2

Using metallic copper as reductant and tetrachloroethylene as carbon precursor, a simple, low temperature solvothermal method for the synthesis of horn shaped carbon nanotubes is reported. The detail study of reaction parameters such as temperature, time, carbon precursor amount, type and catalyst proportion has been carried out to optimize the conditions wherein that the copper metal (10 g) mediated reduction of tetrachloroethylene (25 mL) at 200°C for 5h resulted in the horn shaped carbon nanotubes with high yield and structural selectivity. The adsorption properties of horn shaped carbon nanotubes were investigated for carbon dioxide, methane, carbon monoxide and nitrogen as adsorbate by volumetric measurements up to 850 mm Hg. The prepared horn shaped carbon nanotubes showed good adsorption capacity for CO(2) (45 cm(3)/g) and CO (17 cm(3)/g), at 303 K and 850 mm Hg pressure, with high equilibrium selectivity (73.3 for CO(2) and 110.7 for CO at 318 K) and capacity selectivity (9.1 for CO(2) and 3.1 for CO at 850 mm Hg and 318 K) over nitrogen which provides the tool for the separation of CO(2) from its mixture with nitrogen observed in flue gas of thermal power plants and boilers, as well as with CO such as syngas.

Density, excess molar volumes and refractive indices of β-pinene with o, m, p-xylene and toluene at 303.15, 308.15 and 313.15 K

Densities (ρ), excess molar volumes (VE ), refractive indices (nD ) and deviation in refractive (ΔnD ) indices on mixing for β-pinene with o-xylene, m-xylene, p-xylene and toluene have been determined at T = 303.15, 308.15 and 313.15 K. The excess molar volume and deviation in refractive index have been fitted to Redlich–Kister polynomials. In addition, deviations in refractive indices were compared with the predictions of several mixing rules. Results obtained have been discussed in terms of intermolecular interactions.

Volumetric and viscometric study of binary mixtures of 1,8-cineole with o-, m- and p-cresol at 303.15, 308.15 and 313.15K

Abstract The densities and viscosities of binary mixtures of 1,8-cineole + o-, m- and p-cresol have been measured at 303.15, 308.15 and 313.15 K temperatures at atmospheric pressure. Using experimental values of densities, excess molar volume have been calculated. Similarly, from the densities and viscosities values, deviation in viscosity and excess Gibbs energy of activation for viscous flow has been calculated. Various viscosity correlating interaction parameters like Dolezalek–Schulze (), Grunberg–Nissan (), Tamura–Kurata (), Katti–Chaudhri () and McAllister 3-body relation (, ) have been calculated. The Kendall–Munroe relation, Bingham relation and Arrhenius–Eyring relation have also been calculated. The calculated results were fitted using Redlich–Kister polynomial equation. The results show negative value for excess molar volume and positive value for deviation in viscosity and excess Gibbs energy of activation for viscous flow for all three binaries that indicates the presence of strong interactions between binary components.

A Study of Thermodynamic and Interaction Parameters of N-Formylmorpholine with Some Halobenzenes at 303.15, 308.15 and 313.15 K

Excess molar volume

Kinetic study of specific base catalyzed hydrolysis of ethyl acrylate in water-ethanol binary system

(V^{\text{E}} )

Potentiometric study of binary complexes of 3-[(1R)-1-hydroxy-2-(methylamino)ethyl]phenol hydrochloride with some lanthanide ions in aqueous and mixed solutions

(VE) and deviation in viscosity

Solid-state dechlorination pathway for the synthesis of few layered functionalized carbon nanosheets and their greenhouse gas adsorptivity over CO and N2

(\Delta \eta )