Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Dibenzothiophenes"”.
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SELECTIVE ADSORPTION OF DIBENZOTHIOPHENES ON ACTIVATED CARBONS WITH METAL SPECIES DEPOSITED ON THEIR SURFACES
"The objective of this thesis is an investigation of influence of porosity, surface chemistry, material composition and effects of metals oncarbon adsorbents in desulfurization of liquid fuels. Materials are derived from poly (4-styrenesulfonic acid-co-maleic acid) salts (sodium or transition …
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Transition Metal Complexes With Hydrosulfido and Thiophene Ligands
The removal of thiophenes and dibenzothiophenes from petroleum by catalytic hydrodesulfurization is becoming increasingly important to fossil fuel processing. The reaction mechanism of this process is proposed to involve thiophene coordination to the metal surface and subsequent hydrogen transfer …
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The synthesis of liquid crystalline materials for organic semiconductor device applications
… monomers, based on a series of substituted dibenzothiophenes, thiophenes, [2,2']-bithiophenes, thieno[3,2-b]thiophenes, benzo-2,1,3-thiadiazoles and fluorenes have been synthesised. These materials incorporate photo-polymerisable (non-conjugated diene and methacrylate) and …
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The Separation of the Polar Constituents of Petroleum
… (C1-5) of quinolines, carbazoles, fluorenones, dibenzothiophenes and xanthones were identified within their predicted fractions. Furthermore, comparison of mass spectra obtained from GC×GC-MS analyses with reference spectra resulted in the tentative identification of compounds hitherto not …
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Investigations of benzothienopyrans and related compounds
… accomplished and developed as a new approach to dibenzothiophenes and fused-ring derivatives. The synthesis of chroman-4-ones possessing C-2 spiro-annulated 9-(9Hfluorene), 1 '-indane, 3'-(2,3-dihydrobenzofuran), and 3'-(2,3-dihydrobenzo-[b]thiophene) units has been accomplished and their …
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Geochemical Reaction Proxies (Parameters) to Remotely Monitor In Situ Chemical Reactions and Assess the Extent of Bitumen Upgrading during Thermal Recovery Processes
… naphthalenes, phenanthrenes, anthracenes, dibenzothiophenes increasing. Established reaction proxies, which are a variety of molecular ratios used in geochemical source rock evaluation procedures, concentration data and vacuum residue fraction show strong correlation with the direction of …