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Showing 1 to 17 of 17 for “"Methylcyclohexane"”.
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Kinetics of Methylcyclohexane Dehydrogenation to Toluene on Chromia - Alumina
Made available in DSpace on 2014-12-05T17:15:39Z (GMT). No. of bitstreams: 1 6202996.pdf: 2530041 bytes, checksum: 7fa9324af7952dc087106ea8bdf387d2 (MD5) Previous issue date: 1962
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Mechanistic studies in carbene and polyurethane chemistry
… energy pathway for the interconversion of axial-methylcyclohexane to equatorial-methylcyclohexane was calculated at two Hartree-Fock levels of theory (HF/3-21G and HF/6-31G*) and at the Moller-Plesset level of theory (MP2/6-31G). Through the Hartree-Fock and Moller-Plesset levels of theory, we …
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High Pressure Nmr Studies of the Dynamic Structure of Liquids
… in solution. The solvents used in this study are methylcyclohexane-d(,14), carbon disulfide and acetone-d(,6). It is found that the activation parameters obtained from the temperature dependence of the rate constant are independent of solvent. However, the coalescence temperature in the …
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The design of a high pressure solvent extraction process using liquid ammonia as solvent
… for study, Cumene-n-Heptane-Ammonia and Toluene-Methylcyclohexane-Ammonia. Equlibrium data for the first system was determined experimentally in a specially-designed, equilibrium bomb. A technique was developed to withdraw samples under pressure for analysis by chromatography and titration. The …
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Applications of High Pressure Dynamic NMR
… in acetone-d$\sb6$, n-pentane and methylcyclohexane compared to the pressure dependence of the isomerization of cyclohexane in the same solvents indicates that intramolecular effects cause 1,1-difluorocyclohexane to isomerize as if it is in the diffusive limit region. This diffusive …
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Solution photochemistry of derivatives of Michler's Ketone
… a second peak is occasionally observed. In methylcyclohexane, phosphorescence lifetimes of the order of 10 - 20 msec were found, which increased by a factor of ten when ethanol was used as solvent. Photolysis of the ketones in cyclohexane resulted in their decomposition with high efficiency. …
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The design and construction of a liquid-liquid solvent extractor with reflux
… bottom. The equipment was tested with the system methylcyclohexane-petroleum naphtha-aniline at 25°C. ± 1°C. Saturation of equilibrium data with the corresponding refractive indices were determined. Rates of flow and reflux ratios were calculated by the material balance of Varteressian and Fenake …
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LOW-EMISSIONS HYDROGEN FROM MCH DEHYDROGENATION: INTEGRATION WITH LNG REGASIFICATION
Recovering hydrogen from Methylcyclohexane (MCH) is an energy intensive process. An innovative idea of integrating this process with LNG regasification is proposed in this study and demonstrated via modelling and simulation to reduce energy use. LNG provides a cold source for high recovery …
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DEVELOPMENT OF NOVEL CATALYSTS AND PROCESSES FOR SUSTAINABLE HYDROGEN TECHNOLOGIES
… across PDH, DRM, CDM, ammonia decomposition, and methylcyclohexane dehydrogenation to guide the development of commercially viable and sustainable hydrogen technologies.
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High Pressure Study of Viscosity Effects on the Luminescence of Some S-Tetracyanobenzene Eda Complexes
… used, 2,2,4,4,6,8,8-heptamethylnonane (HMN), methylcyclohexane (MCH), 2,6,10,14-tetramethylpentadecane (TMPD), and a mixture of MCH and HMN. A viscosity range from 0.006 to 10,000 poise was covered at two temperatures, 0(DEGREES)C and 25(DEGREES)C. As pressure (viscosity) increased the …
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Synthesis and Photophysics of Varied Substituted DPNDs for Potential PDT Applications
… and stronger triplet signatures in non-polar methylcyclohexane (MCH) solvent. Conversely, in polar 50% (v/v) DCM:EtOH, the excited states were stabilized and underwent equally non-radiative deactivation and ISC to populate the corresponding triplet manifold. Time-resolved Transient absorption …
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Sorption and desorption of the industrial chemical MCHM into polymer pipes, liners and activated carbon
… This study is in response to a spill of 4-methylcyclohexane methanol (MCHM) that occurred in January 2014 contaminating the drinking water of nine counties in West Virginia. This study investigated sorption and desorption of the odorous chemical MCHM into polymer drinking water …
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Iron Silicate Nano-Crystals as Potential Catalysts or Adsorbents for Heavy Hydrocarbons Upgrading
… modifies the material’s catalytic properties. Methylcyclohexane hydrocracking was carried out with the novel materials, and the protonic-zirconium-doped form showed 5 times more activity than the protonic-nano-Aegirine without zirconium at 673 K. Phenol hydroxylation with hydrogen peroxide at …
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SPECTROSCOPIC STUDIES OF SOME AROMATIC DECOMPOSITION INTERMEDIATES
… by photolysis- of paradisubstituted benzenes in methylcyclohexane-isopentane or ether- isopentane-ethanol solvent mixtures at 77°K« The structures of the radicals have been deduced by consideration of the furthermost red band in the spectrum and by the application of the generalizations of Porter …
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Time-Resolved Studies of Aryl Carbenes
… that irradiation of 11-diazobenzo{b}fluorene in methylcyclohexane (T (LESSTHEQ) 55) generates a triplet ground state carbene (Curie law followed within error).
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Photophysical Studies of Beta Phase Formation in Poly(9,9-di-n-alkylfluorenes)
… upon formation of the beta phase in methylcyclohexane solution are observed by optical spectroscopy. The equilibrium absorption spectra as a function of temperature show that conformational changes occur for all five polymers studied, from the hexyl (PF6) to decyl (PF10) side chains. …
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Combined computational and neutron scattering studies of hydrocarbons confined in mesoporous materials
… and QENS studies were carried out on toluene and methylcyclohexane 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 …