Containers ethane

Raman spectra, indicative of [M-M] + ions, are produced by the yellow glass obtained from the melt of Zn in ZnCl2 and also by the colourless, very moisture sensitive crystals of Cd2Al2Cls obtained from melts of Cd in CdCl2 and AICI3. X-ray studies show that the latter contains ethane-like [Cd2Cl6] groups with Cd-Cd reported as 257.6 pm and 256.1 pm " (cf 302 pm in the metal itself). The Cd nmr... 

The first step in the production of synthesis gas is to treat natural gas to remove hydrogen sulfide. The purified gas is then mixed with steam and introduced to the first reactor (primary reformer). The reactor is constructed from vertical stainless steel tubes lined in a refractory furnace. The steam to natural gas ratio varies from 4-5 depending on natural gas composition (natural gas may contain ethane and heavier hydrocarbons) and the pressure used. 

British Foreign Minister Ernest Bevin once said that "The Kingdom of Heaven runs on righteousness, but the Kingdom of Earth tuns on alkanes." Well, actually he said "tuns on oil" not "runs on alkanes," but they re essentially the same. By far, the major sources of alkanes are the world s natural gas and petroleum deposits. Laid down eons ago, these deposits are thought to be derived from the decomposition of plant and animal matter, primarily of marine origin. Natural gas consists chiefly of methane but also contains ethane, propane, and butane. Petroleum is a complex mixture of hydrocarbons that must be separated into fractions and then further refined before it can be used. 

In addition to methylene and dimethylether linkages, cured networks contain ethane and ethene linkages (Fig. 7.31). These side products are proposed to form through quinone methide intermediates. 

Binary Mixtures Containing Ethane Spills on 297 12 K Water"... 

A tank contains methane at 1000 psia and MOT. Another tank of equal volume contains ethane at 500 psia and MOT. The two tanks are connected, the gases are allowed to mix, and the temperature is restored to MOT. Calculate the final pressure, the composition of the mixture, and the partial pressures of the components at final conditions. Do not assume that ideal gas equations apply. 

Binary Guest Mixture Containing Ethane and Heavier (or Noncombustible) Compounds... 

Natural gas consists of chiefly methane, but also contains ethane, propane, butane and isobutene. Which of the following compounds is NOT found in natural gas ... 

Dimers of M centers occur in the mixed valent compounds GayXs (X = Br, I) = (Ga" )2 [GayXe] " which contain ethane-type [GayXe] " units with Ga-Ga single bonds. As in the dihalides, mixtures of complex and simple ions combine also in InsXy = (In+)3[In2Br6]Br, which contains the ethane-like units with M-M single bonds as weU. ... 

Goy et have studied the reaction of CN radicals with hydrocarbons and hydrogen the CN radicals being produced by photolysis of ICN at 2537 A. Relative rate coefficients for H abstraction were obtained as a function of temperature for only C2H6-CH4 mixtures. For systems containing ethane-propane and propane alone no temperature dependence of the rate coefficient ratios were observed. For... 

Most carbohydrates contain ethane-1,2-diol fragments, therefore they were also successfully included into crown ether macrocycles [313]. Polyvalency of carbohydrates was studied based on dendrimeric structures which were generated on successful glycosylations of highly branched polyethylene glycol units [314]. 

Distillation allows hydrocarbons to be separated by boiling point, and thus by molecular mass. A mixture of gases emerges from the top of the column, resembling the natural gas that collects in rock cavities above petroleum deposits. These gas mixtures contain ethane, propane, and butane, which can be separated further by redissolving them in a liquid solvent such as hexane. The methane-rich mixture of gases that remains is used for chemical synthesis or is shipped by pipeline to... 

A stream containing ethane, butane, and pentane is fed to a temperature-controlled vessel where phase separation takes place between the vapor and the liquid. The vessel pressure is maintained at 690 kPa. The K-values, assumed composition-independent, are given by the equation... 

A stream containing ethane, propane, butane, and pentane is to be separated into four products, each containing mainly one of the four components. A single column with 30 theoretical stages, including a partial condenser and a reboiler, is to be used for this purpose. The column pressure is set at 200 psia. The stream compositions and thermal conditions are given in Table 9.12. 

Synthetic gas can be produced from a variety of feedstocks. Natural gas is the preferred feedstock when it is available from gas fields (nonassociated gas) or from oil wells (associated gas). The first step in the production of synthesis gas is to treat natural gas to remove hydrogen sulfide. The purified gas is then mixed with steam and introduced to the first reactor (primary reformer). The reactor is constructed from vertical stainless steel tubes lined in a refractory furnace. The steam to natural gas ratio is 4—5 depending on natural gas composition (natural gas may contain ethane and heavier hydrocarbons) and the pressure used. A promoted nickel-type catalyst contained in the reactor tubes is used at temperature and pressure ranges of 700 800°C and 30—50 atm, respectively. The product gas from the primary reformer is a mixture of H2, CO, C02, unreacted CH4, and steam. The main reforming reactions are ... 

As discussed above, hydrogen atoms are handled differently from other atoms in SMILES and SMARTS. When searching for structures matching CC all structures will be found that contain ethane as a substructure. Of course, this does not mean [CH3][CH3], but rather any two single-bonded carbon atoms with any number of H atoms attached. One could be more specific and search for, say, [CH][CH] to require exactly one H atom on each carbon. 

High purity vinyl chloride is produced in an overall yield of 80 mol% based on ethane. The feed can contain ethane, ethylene, mixed ethylene-chlorination products, and HCl in various mixtures, and can thereby allow recovery of values from such materials. The flow sheet for the simultaneous chlorination, oxidation, and dehydrochlorination for producing vinyl chloride by the Transcat process is shown in Figure 3. 

The methane used was Phillips Research Grade (99.68%) and contained ethane, ethylene, propane, nitrogen, and carbon dioxide. Repurification was simliar to the method described above. However, molecular sieve 13 X was used as the stationary phase. The purified methane contained only nitrogen and much less of the original ethane. 

A 9.780-g gaseous mixture contains ethane (C2H0) and propane (C3H8). Complete combustion to form carbon dioxide and water requires 1.120 mol oxygen. Calculate the mass percent of ethane in the original mixture. 

It has long been a goal of research on alkane exchange to identify isomers of the same mass, e.g. ethane-l -[Pg.269]

Fischer, C.E., Raith, A., Mink, J., Raudaschl-Sieber, G., Cokoja, M., and Kiihn, F.E. 2011. Organic-inorganic nanotube hybrids Organosilica-nanotubes containing ethane, ethylene and acetylene groups. J. Organometal. Chem. 696 2910-2917. 

KINEMATIC VISCOSITY AND VISCOUS FLOW IN BINARY MIXTURES CONTAINING ETHANE-1,2-DIOL... 

Ohgaki, K. Sano, F. Katayama, T. Isothermal vapor-liquid equilibrium data for binary systems containing ethane at high pressures J. Chem. Eng. Data 1976, 21, 55-58... 

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