Both enantiomers of halitunal (1), a novel diterpene aldehyde having an iridoid carbon framework with a heteroaromatic 10~-system, have been synthesized from (+)-genipin (2).
Conversion of heavy oils into light hydrocarbons has been experimentally studied using discharge plasma. The purpose of this study was to improve the understanding of the parameter characteristics for optimal design of the plasma reactors on the conversion of heavy oils. The low molecular weight hydrocarbons obtained constitute NOx removal system using light olefin hydrocarbons, such as ethylene and propylene as additives. In the present paper, we examined the effect of the parameters such as gap distance of electrodes, carrier gas flow rate, and power applied. Results indicated that the reactions occurring in this process of heavy oil conversion showed an important selective behavior. The mdor products obtained were hydrocarbon compounds with one, two, three and four atoms of carbon, such as CH,, C,H,, C,H,, C4H,0, being ethylene the main compound. The Plate-Plate reactor driven by AC high voltage showed the best performance in reaching notably high efficiencies. The optimum set of values for the parameters studied gave rise to efficiencies in the order of 60 micro litter I Joules. This value was sufficient as one of the available on site production method of hydrocarbon gas for the treatment of nitrogen oxides in the exhaust gas from diesel engine.
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ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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