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Showing 1 to 20 of 1472 for “"Solvents"”.
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Applications of Chiral Nmr Solvents
Made available in DSpace on 2014-12-10T23:01:22Z (GMT). No. of bitstreams: 1 7219888.pdf: 3559423 bytes, checksum: d331bfa23f980499c84a6fb1e646b446 (MD5) Previous issue date: 1972
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Nmr Spectroscopy in Chiral Solvents
Made available in DSpace on 2014-12-09T17:36:29Z (GMT). No. of bitstreams: 1 7013241.pdf: 5951930 bytes, checksum: b666f6e3943a05ab675d4b201eeea9f6 (MD5) Previous issue date: 1969
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Dielectric Behavior in Polar Solvents
Made available in DSpace on 2014-12-05T19:37:27Z (GMT). No. of bitstreams: 1 6003894.pdf: 3343322 bytes, checksum: cde36891f9056e1b37e16e41dbae686d (MD5) Previous issue date: 1960
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Designing switchable solvents for sustainable process development
Novel solvents utilizing a reversible CO₂ induced property switch are presented. The synthetic procedure for designing the solvents is discussed, along with detailed characterizations on both solvent forms to serve as a tool for optimal solvent identification as well as future solvent design. A …
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Simulation of annealed polyelectrolytes in poor solvents
Polymere sind lange kettenartige Moleküle. Sie bestehen aus vielen elementaren chemischen Einheiten, den Monomeren, die durch kovalente Bindungen aneinander gekettet sind. Polyelektrolyte sind Polymere, die ionisierbare Monomeren enthalten. Aufgrund ihrer speziellen Eigenschaften sind …
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Structure and Reactivity in Nanostructured Ionic Solvents
Deep eutectic solvents (DESs) are low melting mixtures, often prepared from a hydrogen bond acceptor (HBA) salt and a molecular hydrogen bond donor (HBD) at a specific molar ratio. These unique solvents are of increasing research interest due to their potential for simple, 100% atom economical …
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Electrochemical and thermochemical destruction of chlorinated solvents
… was developed to destroy liquid chlorinated solvents, and a thermochemical technique was invented to reduce gas-phase chlorinated solvents to hydrocarbons. The developed electrochemical method belongs to the most potential technique for wastewater treatment--only electrochemical method is …
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The Structure of Solvents Confined to Metal Surfaces
Finally, tetrabutylammonium perchlorate (TBAP) is added to DMSO. Under potential control, positive of the potential of zero charge (PZC), STM reveals the DMSO solvent structure together with the perchlorate anion. The tetrabutylammoniurn cation can not be seen due to the presence of water in the …
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Synthesis of nanostructured materials in deep eutectic solvents
Deep eutectic solvents (DES), a new generation of non-toxic, eco-friendly and biodegradable solvents discovered in 2001 consist of a variety of cations and anions. These new sub-category of ionic liquids present interesting properties due to the hydrogen bonding between their components and are …
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Sorption of chlorinated solvents in a sandy aquifer
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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Effects of solvents on thermotropic liquid crystalline copolyesters
… that occur when these materials are exposed to solvents such as dioxane or acetone and dye carriers were also studied using SEM. Electron microscopy results on the thermally pressed, quenched and chemically etched films indicate that selective chemical etching, i.e. etching of PET rich regions, …
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Polymorph Selection with Morphology Control Using Solvents and Additives
Sulphathiazole is a highly polymorphic model system exhibiting at least five polymorphic forms: I, II, III, IV, and V. Polymorph stability is known to be susceptible to solvent environment, and it is established that 1-propanol stabilizes the most metastable form I. This study examines the effect …
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Polyol induced extraction (PIE) of water from organic solvents
… phase.</p> <p>Our study also demonstrates that solvents in all of the major categories, non-polar (carbon tetrachloride, gasoline, kerosene, diesel, petroleum distillates, cyclohexane, hexanes), polar aprotic (acetonitrile, 2-butanone, acetone, cyclopentanone, dichloromethane, tetrahydrofuran, …
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Mass transfer studies in heavy oil recovery using solvents
… devised which involves using gaseous or liquid solvents directly to bring down the viscosity of bitumen. One such method, vapor extraction (VAPEX) process uses gaseous solvents like hydrocarbon solvents and CO<sub>2</sub> to reduce bitumen viscosity. Vaporized solvents is introduced laterally to …
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Multi-techniques Characterization of Mechanochemically Synthesized Deep Eutectic Solvents
… for biological applications. Traditional solvents are homogeneous, having only one component, and their chemistry is relatively simple. However, DESs comprise two components, so their synthesis, characterization, and interaction chemistry between HBA: HBD in DESs are complicated. In this …
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