The intramolecular ring closure reactions of unsaturated hydrocarbon radicals potentially play an important role for the formation of molecular weight growth species, especially during the pyrolysis and oxidation of alkenes under low to intermediate temperatures. In this work we investigated a series of intramolecular cycloaddition reactions of both allylic- and alkyl-type dienyl radicals. In t...

poly aromatic hydrocarbons are hydrophobic organic compound found as major contaminants in soil. soil biological activities are vital for the restoration of soil contaminated with hydrocarbons. successful application of bioremediation technology to contaminated soil requires knowledge of the characteristics of the site and the parameters that affect the microbial biodegradation of pollutants. t...

A mechanism generator code to automatically generate mechanisms for the oxidation and combustion of large hydrocarbons has been successfully modified in this work. The modification was through: (1) improvement of the existing rules such as cyclic-ether reactions and aldehyde reactions, (2) inclusion of some additional rules to the code, such as ketone reactions, hydroperoxy cyclic-ether formati...

The secondary organic aerosol (SOA) yields from the laboratory chamber ozonolysis of a series of cycloalkenes and related compounds are reported. The aim of this work is to investigate the effect of the structure of the hydrocarbon parent molecule on SOA formation for a homologous set of compounds. Aspects of the compound structures that are varied include the number of carbon atoms present in ...

Petroleum hydrocarbons are important energy resources used by industry and in our daily life, whose production contributes highly to environmental pollution. To control such risk, bioremediation constitutes an environmentally friendly alternative technology that has been established and applied. It constitutes the primary mechanism for the elimination of hydrocarbons from contaminated sites by ...

Aviation fuel (i.e., jet fuel) requires a mixture of C9 -C16 hydrocarbons having both a high energy density and a low freezing point. While jet fuel is currently produced from petroleum, increasing concern with the release of CO2 into the atmosphere from the combustion of petroleum-based fuels has led to policy changes mandating the inclusion of biomass-based fuels into the fuel pool. Here we r...

Adsorption and conversion of various hydrocarbons on monolithic hydrocarbon adsorbers were studied using a new experimental model, temperature-programmed adsorption (TPA). In this study, methyl alcohol, acetone, acetaldehyde, 2,2,4-trimethylpentane, n-octane, and toluene were chosen as model hydrocarbons for cold start of a vehicle. The effect of the hydrocarbon components and oxygen concentrat...

Important information regarding the reactions of carcinogenic and related hydrocarbons has been obtained chiefly from the following four previous lines of investigation : ( a ) The extensive study of methods of synthesis of carcinogenic hydrocarbons by the technics of the organic chemist (4). ( b ) The experimental study of the oxidative and coupling reactions of such hydrocarbons under conditi...