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Showing 1 to 13 of 13 for “"mesitylene"”.
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The Investigation of the Low Temperature Combustion of Mesitylene and Tert-Amyl Methyl Ether by Synchrotron Photoionization Mass Spectrometry
… systems being investigated in this thesis. Mesitylene, an aromatic fuel additive, is proposed to be jet fuel, and its combustion is described in Chapter 4. Semi-biorenewable tert-amyl methyl ether (TAME) is studied in Chapter 5. Thermodynamic calculations, proposed mechanism, product …
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Studies of the effects of molecular encounters on N.M.R. spin-lattice relaxation times
… relaxation times, with particular reference to mesitylene in mixtures with cyclohexane and TMS. The purpose of the work was to establish the best theoretical description of T1 and assess whether a recently identified mechanism (buffeting), that influences n.m.r. chemical shifts, governs Tl also. …
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Regioselective, Nucleophilic Activation of C-F Bonds in o-Fluoroanilines
… anilines with stoichiometric Ti(NMe2)4 in mesitylene (typically for 23 h at 120 °C) afforded moderate to high yields of the corresponding N,N-dimethyl-o-phenylenediamine derivatives resulting from defluoroamination of a fluorine atom ortho to the NH2 of the starting aniline. Reactivity …
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A Structural Study of Some (h6-Arene)ML2, First Row, Group VIII, Transition Metal Complexes and Their Derivatives
… complexes containing Ni-SiX3 bonds is (h6-mesitylene)Ni(SiCl3)2 and presented. The compounds (h6-toluene)Ni(SiF3)2, crystallize in space group P21/c with Z = 2. The lattice constants at 23° C are: a = 9.056(2), b = 14.426(1), c = 13. 3 0 3 ( 2) ~, {J = 10 0. 6 9 ( 1 )0 , and a = 11. 3 5 5 ( …
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Valorización de etanol y acetona mediante procesos catalíticos
… Acid catalysis was essayed to improve the mesitylene yield via isophorones dehydration. Both, MCM 41 aluminosilicate and BEA zeolite show a high selectivity to mesitylene regarding the other C9. Nevertheless, acetic acid and isobutene formation by the C6 β scission limits the results. The …
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Electronic properties of nano and molecular quantum devices
… Me3Si―(C≡C)n―SiMe3 (n = 2, 3, 4, and 5) in mesitylene (MES), 1,2,4- trichlorobenzene (TCB), and propylene carbonate (PC). In mesitylene, a lower conductance is obtained across the whole series with a higher length decay (β ≈ 1 nm−1). In contrast, measurements in 1,2,4-trichlorobenzene and …
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Photoionization Mass Spectrometry and Photoelectron-Photoion Coincidence (PEPICO) Spectroscopy Studies of Select Biofuel Molecules
… spectroscopy of two biofuel additives (GVL and mesitylene). This technique is used to measure various thermodynamic quantities, such as heats of formation, entropies of activation, and bond strengths. In addition, dissociation rates will also be obtained with the use of two statistical models, …
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Mutagenic studies into the catalytic versatility of soluble methane monooxygenase
… and a novel oxidation product with the substrate mesitylene which may have implications for substrate trafficking. The F282L mutant produced a stable enzyme which had no activity with any of the substrates tested, showing Phe282 is important for the enzyme function. A random mutagenesis experiment …
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Peri-substituted dithianaphthalenes as sources of reactive intermediates in organic chemistry
… to the thiosulfonate 224 occurred in refluxing mesitylene, establishing trans-217 as the most stable vic-disulfoxide to date. Bis(sulfonyl)hydroxylamine 284 is proposed as a potential source of nitric oxide (NO) or nitroxy (HNO). 284 was prepared by formal N-insertion into the S(O)-S(O)\(_2\) …
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Combined computational and neutron scattering studies of hydrocarbons confined in mesoporous materials
… as well as on the three xylene isomers, mesitylene and trifluorobenzene. The time and length scales investigated was on the order of ps to ns and Å in both the MD simulations and QENS experiments. According the QENS experiments the effect of confining a liquid is a decrease in mobility as …
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Investigations into the determination of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) by capillary gas chromatography
… benzene, toluene, p-xylene, o-xylene, and mesitylene. Temperatures of the capillary column, the injection port, the GC/MS interface, the flow rates of carrier gas and make-up gas, and the injection volume were optimized by one factor at a time method or simplex optimization method. Under …
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Polyol induced extraction (PIE) of water from organic solvents
… ethyl acetate, chloroform, diethyl ether, mesitylene, p-xylene, benzene, toluene, t-butyl methyl ether, dimethylpthalate, dibutylpthalate) and polar protic (t-butanol, 1-butanol, isopentyl alcohol, cyclohexanol, 1-octanol) can be purified by the PIE process. Some solvents are not separated …
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Síntesis de nanoestruturas metálicas de oro y plata a partir de precursores organometálicos: Propiedades plasmónicas y catalíticas
… points such as tetrahydrofuran, toluene or mesitylene has permitted to exert an excellent control on the size and metal composition of the nanoparticles, allowing us to carry out a deep study of the plasmonic properties of the obtained nanoparticles. This work is completed with a study of …