Hydrocarbon propane

Asphalt, prepared from petroleum, often resembles native asphalt. When asphalt is produced by distillation, the product is called residual, or straight-mn, asphalt. However, if the asphalt is prepared by solvent extraction of residua or by light hydrocarbon (propane) precipitation, or if it is blown or otherwise treated, the name should be modified accordingly to qualify the product, eg, propane asphalt. 

Ammonia, halogen-ated hydrocarbons, propane, ethylene, and others... 

On the other hand, liquid propane also has a high affinity for paraffinic hydrocarbons. Propane deasphalting removes asphaltic materials from heavy lube oil base stocks. These materials reduce the viscosity index of lube oils. In this process, liquid propane dissolves mainly paraffinic hydrocarbons and leaves out asphaltic materials. Higher extraction temperatures favor better separation of the asphaltic components. Deasphalted oil is stripped to recover propane, which is recycled. 

In a similar manner, Sahner et al. [76, 77] utilized a Pt-ZSM-5 layer to reduce the cross-sensitivity of a hydrocarbon (propane) sensor toward CO, propene, H2, and NO at 673 K. The zeolite layer was put on the sensor as a paste. The improved cross-sensitivity is attributed to selective oxidation of aU considered components except propane. Trimboli et al. [78] demonstrated the same concept by using a Pt-Y zeohte for the CO oxidation, maintaining the sensitivity for propane. 

The US fire code covers installation and use of gaseous oxygen-fuel gas systems for welding and cutting, for the thermodynamically unstable fuels acetylene, MAPP (methylacetylene-allene-propene-propane mixtures), and the stable hydrocarbons propane or butane. 

Solvent asphalt the asphalt (q.v.) produced by solvent extraction of residua (q.v.) or by light hydrocarbon (propane) treatment of a residuum (q.v.) or an asphaltic crude oil. 

As with ethane and other paraffin hydrocarbons, propane is an important raw material for the ethylene petrochemical industry. The decomposition of propane in hot tubes to form ethylene also yields another important product, propylene. The oxidation of propane to compounds such as acetaldehyde is also of commercial interest. 

Hydrocarbons (propane, butane, Fluorine, chlorine, bromine, chromic acid, sodium peroxide... 

As more than one hydroxyl group linked to a single carbon atom results in an unstable compound, the simplest di-hydroxy alcohol is the one derived from the two carbon hydrocarbon ethane (i.e.) dihydroxy ethane, or glycol, CH2—(OH) — CH2(OH). Similarly the simplest tri-hydroxy alcohol is derived from the three carbon hydrocarbon propane. It is known commonly as glycerin, but is better termed glycerol, as the termination, ol, signifies an alcohol. 

Also shown in Figure 1.11(c), for purposes of comparison, are three neutral classically bonded hydrocarbons, propane, cyclopropane, and cyclopropene. For these systems, and for electron-precise systems in general, the number of electrons available for bonding (n) is equal to the number of AOs available (and so precisely the right number to fill the nil bonding MOs). 

Webb and McNaught (1980) present in detail the design of a heat exchanger for condensing a mixture of five hydrocarbons [propane(l)-7r-butane(2)-M-hexane(3)-7i-heptane(4)-zi-octane(5)]. Using the data presented in their article, calculate the molar rates of condensation at the entrance to the condenser. 

The broad peak of Fig. 14 around 1.2 V is attributed to a type II or CH-a intermediate (174,176,178,180 which desorbs cathodically. Type II species probably are partially dehydrogenated hydrocarbons of a structure and their amount depends on the parent hydrocarbon. Propane forms two type II intermediates (180). CH-a and CH-/ (or type III), with the latter nondesorbable either anodically or cathodically a polymeric surface residue is attributed to this species. Type CH-a is assumed to consist of adsorbed alkyl radicals of varying composition, depending on potential. 

Wet natural gas contains natural gasoline in vapor form. The wet gas, also known as casinghead gas, is chiefly a mixture of methane, ethane, and the volatile hydrocarbons propane, butane, pentane (C5H12), hexane (CeH ), and heptane (C7H16). The latter three hydrocarbons form the main constituents of natural gasoline, which is recovered in refineries in liquid form mainly by absorption or compression processes. Pentane, hexane, and heptane are liquids under normal atmospheric conditions and are the chief components of ordinary refinery gasoline. 

Liquid petroleum gas is a mixture of the hydrocarbons propane and butane. 

Figure 3. RK interaction parameters for the hydrocarbon-hydrocarbon systems ( ), methane-heavier hydrocarbon ( ), ethane-heavier hydrocarbon ( ), propane-heavier hydrocarbon (A), n-butane-heav-ier hydrocarbon and ( ), n-pentane-heavier hydrocarbon.

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