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Showing 1 to 15 of 15 for “"isobutane"”.
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Zeolites for Cleaner Processes: Alkylation of isobutane and n-butene
… intrinsic hydride transfer rate and the ratio of isobutane to n-butene: P/ O) concentration in the vicinity of the catalyst. For a given P/O feed ratio, achieving close to plug flow for isobutane and high back-mixing for n-butene further enhances local P/O ratio and yield. Furthermore, optimal …
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The gaseous compressibility of isobutane, the vapor pressures, critical constants, and gaseous compressibility of butene-1
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1943.
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Experiment, thermodynamic properties and modeling on combustion of methyl tert-butyl ether : isobutane and isobutene and thermodynamic properties of chloro alkanes and alkenes
The reaction systems: methyl tert-butyl ether (MTBE) unimolecular decomposition, MTBE radicals + O_2, tert-butyl radical +O_2, isobutene + HOO. (HO_2),isobutene + OH, sobutene-OH adducts + O_2, and allylic isobutenyl radical + O_2, are important systems in the understanding the oxidation chemistry …
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An investigation into the partial oxidation of C-4 alkanes over vanadyl pyrophosphate and heteropoly acids
… heteropoly acid catalyst for the conversion of isobutane to methacrylic acid.
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Capture and recovery of organic gases with electrothermal swing adsorption and post-desorption treatment
… each adsorbate. The four adsorbates tested were: isobutane, R134A, n-butane, and dichloromethane. The inlet relative pressure of the adsorbates ranged from 8.3x10-5 to 3.4x10-3. The GRS successfully captured and recovered all relative pressures and adsorbates of interest except dichloromethane, …
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DEVELOPMENT OF A LOW PRESSURE-INDUCTIVELY COUPLED PLASMA-ION SOURCE FOR MASS SPECTROMETRY
… were observed. However, on the addition of more isobutane only the molecular ions (M*) for chlorobenzene, iodobenzene and dibromobenzene were observed. The detection limits for the instrument operating in the molecular mode were 100, 140 and 229 pg for chlorobenzene, iodobenzene and …
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Autoignition and flame speed of premixed liquefied petroleum gas in a rapid compression machine: experimental results and reduced chemical kinetic mechanism
… and blends of propane with propene, ethane, isobutane, or n-butane. EGR was simulated with mixtures of Ar, CO2, CO, and NO at substitution percentages from 0 to 30 mass percent. Equivalence ratio was varied from 0.75 to 1.5. Ignition delay period under homogeneous autoignition conditions was …
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Trend Analyses of the Abundances of Atmospheric Molecules
… and <em>v''</em> = 0 - 6.</p> <p>Spectra of pure isobutane were recorded at high temperature in the CH stretching region (2700-3100 cm-1) by high resolution Fourier transform spectroscopy. Isobutane absorption cross sections were determined for six temperatures from 273 K to 723 K. Integrated …
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CONVERSION OF METHANOL AND LIGHT OLEFINS TO GASOLINE OVER A SHAPE SELECTIVE CATALYST ZSM-5
… less reactivity than propylene and butenes. Isobutane, n-hexane and n-heptane are relatively stable final products, but the latter two paraffins can undergo some cracking reactions. Benzene and toluene can alkylate with methanol to form toluene and to a lesser extent the xylenes. No cracking …
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Vapor-Liquid Phase Equilibria Using Monte Carlo Wang-Landau Simulations
… curves of copper and branched alkanes, isobutane and isopentane, by combining the HMC technique with the WL sampling. The standard boiling points of n-alkanes such as eicosane, tetracosane and triacontane are simulated by implementing the CBMC technique in the WL method in order to …
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The effect of hydrothermal and acid dealumination on the structural, acid and catalytic properties of Mordenite
… of Mordenite as determined by studies of isobutane cracking, cyclohexanol dehydration and isopropylation of naphthalene, were then explained in terms of the acidic and structural properties of the dealuminated Mordenite samples.
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Monitoring and control of electrothermal swing adsorption based on electrical properties of the adsorbent
Organic vapors and gases (e.g., toluene and isobutane, respectively) are used in industry to produce a variety of products (e.g., coatings and packaging materials). During production and use of these products, these vapors/gases are often emitted in dilute concentrations, causing adverse health …
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Comparative Life Cycle Assessment of CFC-replacement Compounds in Different Technical Applications
… comprise dichloromethane (R30), propane (R290), isobutane (R600a), carbon dioxide (R744), pentafluorodimethyl ether (E125), 1,1,1’,1’-tetrafluorodimethyl ether (E134), hepta-fluoropropyl methyl ether (E7000), methyl nonafluorobutyl ether (E7100), ethyl nonafluorobutyl ether (E7200), and …
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Polovodičové senzory plynů pro detekci organických plynů a par
V tejto bakalárskej práci sú rozobrané základné vlastnosti senzorov. Ďalej obsahuje prehľad v súčasnosti najčastejšie používaných typov senzorov plynov, ktoré sú rozdelené podľa ich fyzikálneho princípu. Jadrom práce je experimentálna časť, v ktorej je popísaný postup výroby senzorov s aktívnymi …