Zobrazeno 1 - 10
of 48
pro vyhledávání: '"F.X.C. de las Heras"'
Publikováno v:
Reactive and Functional Polymers. 67:1515-1529
The search for suitable sorbents for polycyclic aromatic hydrocarbons (PAHs) removal from aqueous solutions prompted the evaluation of polymeric resins incorporating new properties that solve many of the existing problems when using granulated-activa
Publikováno v:
Organic Geochemistry. 37:1727-1735
The Utrillas coal facies are located in the Maestrazgo basin in NE Spain. This mining district of Teruel contains sub-bituminous deposits from the Middle Albian (Lower Cretaceous 105 Ma) in areas near a delta estuary with abundant sulphur. The high s
Publikováno v:
Organic Geochemistry. 34:1627-1633
A molecular study of linear, branched and isoprenyl alkylbenzene skeletons and alkenylbenzenes in the soluble fraction extracted from a sulfur-rich Utrillas coal was carried out using gas chromatography–mass spectrometry (GC–MS). The presence of
Publikováno v:
Energy & Fuels. 16:1444-1449
Low-rank coals characterized by a high content of sulfur from Mequinenza (type III−S), Calaf (type III), and Utrillas (type III) basins, as well as type I−S oil shales from Ribesalbes were analyzed by thermogravimetry for deriving kinetic paramet
Publikováno v:
Sedimentary Geology. 148:289-317
The Late Oligocene Mequinenza formation (SE Ebro Basin, NE Spain) records the development of extensive, shallow, low-gradient lacustrine zones, which evolved under a subtropical, warm climatic regime, affected by humidity–aridity cycles. Carbonate-
Publikováno v:
Journal of Analytical and Applied Pyrolysis. 63:59-68
We studied the humic-acid fraction isolated from a Spanish leonardite coal (Torrelapaja, Cretaceous basin belonging to the Utrillas facies) using a suite of chromatographic and spectroscopic techniques to characterize the structure of the carbon skel
Autor:
M.A. Olivella, F.X.C. de las Heras
Publikováno v:
Thermochimica Acta. 385:171-175
Large coal reserves in Spain are an important source of energy. Their mediterranean coals are characterized by a high sulfur content. Thus, the combustion of these coals can cause serious environmental effects due to the release of SOx. Coal gasifica
Publikováno v:
Fuel. 81:405-411
A set of Spanish coals and oil shales were studied using destructive and non-destructive techniques to identify the functionalities of the sulfur compounds. The selected samples included organic-sulfur-rich Spanish lignites mined in the Mequinenza, U
Publikováno v:
Organic Geochemistry. 25:353-365
Selected geochemically relevant model compounds were subjected to the nickel boride desulphurization method. Poor hydrogenating properties of this agent were observed in the case of sterically hindered double bonds. Apart from its desulphurizing prop
Publikováno v:
Geochimica et Cosmochimica Acta. 55:3379-3385
Five novel ethylene-linked polymethyl-substituted phenyl/naphthyl or naphthyl/naphthyl hydrocarbons have been identified in aromatic hydrocarbon fractions of immature Tertiary coals using liquid chromatography, gas chromatography (GC), and GC coupled