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Showing 1 to 16 of 16 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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Wpływ wysokiego ciśnienia na struktury krystaliczne, polimorfizm i oddziaływania międzycząsteczkowe w najprostszych węglowodorach alifatycznych i ich pochodnych
… symmetric dialkyl ethers, butene isomers, and isobutane. In total, 64 new crystal structures were determined, and 20 previously unknown polymorphs were discovered. The results show that the response of these molecular crystals to compression depends on molecular geometry, symmetry, …
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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 …