Results 21 to 30 of about 896 (204)
Atmosphere, 2020 The main objective of this work was to bring to date the exhaust and evaporative volatile organic compound (VOC) profiles from light-duty gasoline vehicles, carrying out a sampling and analysis campaign in two tunnels of Mexico City.
Violeta Mugica-Álvarez +7 more
doaj +1 more source
INCREASING THE EFFECTIVENESS OF STABILIZATION COLUMNS IN THE OIL AND GAS INDUSTRY
Известия высших учебных заведений: Нефть и газ, 2018 According to the results of the study, we found that increasing the pressure in a stabilization column improves the sharpness of separation of butanes from pentanes. As a result, the product quality is getting better.
D. B. Ermolin +2 more
doaj +1 more source
Improving gasoline quality produced from MIDOR light naphtha isomerization unit
Egyptian Journal of Petroleum, 2017 Isomerization process became one of the best gasoline production sources, as it gives a high octane product while saving environment from pollution impacts.
M.F. Mohamed +3 more
doaj +1 more source
Increasing LPG production by adding volatile hydrocarbons to reduce import gap in Egypt
Journal of Petroleum Exploration and Production Technology, 2020 Liquefied petroleum gas (LPG) becomes popular in the twentieth century as source of energy, since it is economically feasible to be produced, transported, sold and stored as a liquid fuel.
Ahmed M. Shahin +2 more
doaj +1 more source
Insertion of [1.1.1]propellane into aromatic disulfides
Beilstein Journal of Organic Chemistry, 2019 Herein we present the synthesis of symmetrically and unsymmetrically substituted 1,3-bissulfanylbicyclo[1.1.1]pentanes from disulfides and [1.1.1]propellane.
Robin M. Bär +4 more
doaj +1 more source
Strain-release transformations of bicyclo[1.1.0]butanes and [1.1.1]propellanes
Tetrahedron ChemBicyclo[1.1.0]butanes (BCBs) and [1.1.1]propellanes (tricyclo[1.1.1.01,3]pentanes, TCPs) are structurally unique compounds with different chemical properties.
Qian-Qian Hu +4 more
doaj +1 more source
Palladacarboxamide Capping Reagents for Carbon Isotope Labeling and Pharmaceutical Diversification
Angewandte Chemie, EarlyView.Herein, we present a method for carbon isotope labeling of arylamides via the coupling of air‐stable palladium carboxamide complexes and boronic ester/acids. A wide variety of functionalized boronic esters and acids have been coupled with simple palladium carboxamides complexes.
Daniel V. Hoffmann +8 more
wiley +2 more sources
The structure of cool flame fronts of pentane, iso-pentane and their mixture [PDF]
Journal of Thermal Science, 2000 An experimental study of the combustion of two isomers of n-pentane and iso-pentane in laminar cool flames has been carried out. Three flames were studied, one with n-pentane, the second with iso-pentane, and the third with an equimolar mixture of the two isomers. Particular attention has been given to the low temperature region ahead of the hot region
Z. A. Mansurov +4 more
openaire +1 more source
Journal of Environmental Health and Sustainable Development, 2022 Introduction: The increasing trend of petroleum production in Iran and lack of proper and systematic management of waste products in the deposition of petroleum storage tanks have made the existing hydrocarbons as a major hazards to the environment.
Mahdi Farzadkia +5 more
doaj
A Neutral “Masked” Diborene and Its Reactivity Toward Metal‐Free Pyridine Homocoupling
Angewandte Chemie, EarlyView.An unprecedented neutral “masked” diborene, formed via intramolecular arene dearomatization of an N‐heterocyclic imine‐supported free diborene, can be photochemically released to regenerate the highly reactive triplet diborene intermediate. Computational analysis elucidates the bonding situation of the hitherto elusive free diborene species, and the ...
Ke Li +4 more
wiley +2 more sources