Collect. Czech. Chem. Commun. 1979, 44, 1160-1166
https://doi.org/10.1135/cccc19791160

Characterization of heavy crude oil fractions by means of the 13C NMR technique

Milan Hájeka, Gustav Šeborb, Ivo Langc, Zenon Starčukd, Otto Weisserb and Luděk Vodičkaa

a Laboratory of Synthetic Fuels
b Department of Petroleum Technology and Petrochemistry, Prague Institute of Chemical Technology, 166 28 Prague 6
c Mining Institute, Czechoslovak Academy of Sciences, 180 42 Prague 8
d Institute of Scientific Instruments, Czechoslovak Academy of Sciences, Brno

Individual author index pages


Other CCCC articles of these authors

  • Pavel Šimáček*, Daniel Maxa and Gustav Šebor
    Determination of High-Molecular-Weight n-Alkanes of Petroleum Origin by High-Temperature Gas Chromatography
    2007, Vol. 72, Issue 9, pp. 1295–1305 [Abstract]
  • Milan Hájek
    Microwave Activation of Homogeneous and Heterogeneous Catalytic Reactions
    1997, Vol. 62, Issue 2, pp. 347–354 [Abstract]
  • Milan Hájek, Martin Kotora, František Adámek, Reg Davis, Cecile Fischer and Warren A. C. Joshu
    Catalyst Effects on the Stereoselectivity of Addition of Tetrachloromethane to 1,3-Cyclohexadiene
    1996, Vol. 61, Issue 5, pp. 774–777 [Abstract]
  • Martin Kotora, Milan Hájek and Christian Döbler
    Addition of Tetrachloromethane to Styrene Catalyzed by Copper-Chiral Amine Complexes
    1992, Vol. 57, Issue 12, pp. 2622–2628 [Abstract]
  • František Adámek, Milan Hájek and Zbyněk Janoušek
    Relative Reactivities of 1,1,1-Trichloroethane and 1,1,1-Trichlorotrifluoroethane in Competitive Addition Reactions
    1992, Vol. 57, Issue 6, pp. 1291–1298 [Abstract]
  • Martin Kotora and Milan Hájek
    Addition of Tetrachloromethane to 1,5-Hexadiene
    1992, Vol. 57, Issue 2, pp. 393–396 [Abstract]
  • Milan Hájek, Přemysl Šilhavý and Božena Špirková
    Reactivity of substituted styrenes in the catalytic addition reaction with the trichloromethyl radical
    1990, Vol. 55, Issue 12, pp. 2949–2955 [Abstract]
  • Josef Janků, Sergei D. Isaev, Leonid V. Cybulskii, Luděk Vodička and Alexander G. Yurchenko
    Reactions of isomeric oxo-2(3)-oxahomodiamantanes. Dehydration of tetracyclic diols with concentrated phosphoric acid
    1990, Vol. 55, Issue 10, pp. 2475–2480 [Abstract]
  • Zdeněk Kafka and Luděk Vodička
    Isomerization of heptacyclic hydrocarbons to triamantane
    1990, Vol. 55, Issue 8, pp. 2043–2045 [Abstract]
  • Jan Ondráček, Josef Janků, Jiří Novotný, Luděk Vodička, László Csordás and Bohumil Kratochvíl
    The Bayer-Villiger oxidation of diamantanone and the structure of 11-oxo-10-oxapentacyclo[7,4,1,14,13,02,7,06,12]-pentadecane
    1989, Vol. 54, Issue 12, pp. 3260–3266 [Abstract]
  • Sergei D. Isaev, Nataliya F. Karpenko, Aleksandr G. Yurchenko, Luděk Vodička, Valentin I. Kadentsev and Pavel Zachař
    Compounds of aziadamantane type: Mass spectrometric study
    1989, Vol. 54, Issue 3, pp. 691–698 [Abstract]
  • Robert Ponec and Milan Hájek
    Influence of the solvent on the transmission of polar effects in free radical reactions. A theoretical study
    1988, Vol. 53, Issue 11, pp. 2714–2721 [Abstract]
  • Jiří Burkhard, Josef Janků and Luděk Vodička
    Reaction of 1-acetyladamantane with thionyl chloride
    1988, Vol. 53, Issue 1, pp. 110–113 [Abstract]
  • Milan Hájek, Alena Horská, Petr Trška, Luděk Vodička, Douglas J. Raber, Brent L. Podlogar and Joop A. Peters
    Halogen substituted adamantanones. Structural studies with lanthanide shift reagents
    1988, Vol. 53, Issue 1, pp. 97–109 [Abstract]
  • Josef Janků, Jiří Burkhard and Luděk Vodička
    Reaction of adamantanone, diamantanone, and their derivatives with thionyl chloride
    1987, Vol. 52, Issue 8, pp. 2028–2034 [Abstract]
  • Zdeněk Vít and Milan Hájek
    Addition of esters of chloroacetic acids to 1,3-butadiene catalysed by copper complexes
    1987, Vol. 52, Issue 5, pp. 1280–1284 [Abstract]
  • Josef Janků, Jiří Burkhard and Luděk Vodička
    Reaction of 5-oxo-4-oxahomoadamantane with thionyl chloride
    1987, Vol. 52, Issue 3, pp. 752–755 [Abstract]
  • Robert Ponec, Štěpán Krupička and Milan Hájek
    MO analysis of chemically interacting systems. Reaction of hydrogen abstraction by free radicals
    1987, Vol. 52, Issue 3, pp. 547–554 [Abstract]
  • Zdeněk Kafka and Luděk Vodička
    Oxidation of triamantane
    1986, Vol. 51, Issue 12, pp. 2798–2801 [Abstract]
  • Luděk Vodička, Jiří Burkhard and Josef Janků
    Reaction of hydroxydiamantanes with chloroethylenes in sulfuric acid
    1986, Vol. 51, Issue 5, pp. 1086–1093 [Abstract]
  • Zdeněk Kafka and Luděk Vodička
    The Diels-Alder reaction of butadiene with hexacyclic olefins in the synthesis of triamantane
    1986, Vol. 51, Issue 5, pp. 1083–1085 [Abstract]
  • Maya D. Stefanova and Ivo Lang
    Fractionation of soluble portion of reductively alkylated bituminous coals
    1986, Vol. 51, Issue 5, pp. 1071–1082 [Abstract]
  • Luděk Vodička, Jiří Burkhard and Josef Janků
    Preparation of diamantanedicarboxylic acids with carboxyl groups on one secondary and one tertiary carbon atom
    1986, Vol. 51, Issue 4, pp. 867–871 [Abstract]
  • Zdeněk Kafka and Luděk Vodička
    Isomerization of binor S
    1985, Vol. 50, Issue 5, pp. 1212–1215 [Abstract]
  • Luděk Vodička, Sergei D. Isaev, Jiří Burkhard and Josef Janků
    Synthesis and reactions of hydroxydiamantanones
    1984, Vol. 49, Issue 8, pp. 1900–1906 [Abstract]
  • Jan Tříska, Luděk Vodička, Eugenijus P. Butkus and Milan Hájek
    Beckmann rearrangement of adamantanone oxime as a route to ditopic and tritopic secondarily substituted adamantane derivatives
    1984, Vol. 49, Issue 8, pp. 1774–1779 [Abstract]
  • Robert Ponec, Milan Hájek and Jaroslav Málek
    PMO treatment of structure-reactivity relationships. Polar effects in the free radical addition reactions
    1983, Vol. 48, Issue 9, pp. 2469–2472 [Abstract]
  • Milan Hájek and Přemysl Šilhavý
    Redox chain addition of chloroform to 1-alkenes catalysed by copper complexes
    1983, Vol. 48, Issue 6, pp. 1710–1717 [Abstract]
  • Luděk Vodička, Josef Janků and Jiří Burkhard
    Synthesis of diamantanedicarboxylic acids with the carboxy groups bonded at tertiary carbon atoms
    1983, Vol. 48, Issue 4, pp. 1162–1172 [Abstract]
  • Zdeněk Kafka, Luděk Vodička and Milan Hájek
    Oxidation of triamantane by sulphuric acid
    1983, Vol. 48, Issue 4, pp. 1074–1076 [Abstract]
  • Ivo Lang
    Structural units of maltenes and asphaltenes from hydrogenation of coal
    1982, Vol. 47, Issue 3, pp. 843–852 [Abstract]
  • Zdeněk Kafka, Luděk Vodička and Vlastimil Galík
    Isomerization of binor S
    1982, Vol. 47, Issue 1, pp. 286–289 [Abstract]
  • Robert Ponec, Milan Hájek and Jaroslav Málek
    PMO-treatment of the structure-reactivity relationships in free radical addition reactions of cycloalkenes
    1981, Vol. 46, Issue 10, pp. 2524–2530 [Abstract]
  • Gustav Šebor, Salvador Reynoso, Milan Hájek, Otto Weisser and Jiří Mostecký
    Study of hydrogenation of petroleum asphaltenes
    1981, Vol. 46, Issue 2, pp. 409–418 [Abstract]
  • Milan Hájek, Přemysl Šilhavý and Jaroslav Málek
    Catalytic activity of copper oxides and chlorides in the redox chain addition of tetrachloromethane to styrene
    1980, Vol. 45, Issue 12, pp. 3502–3509 [Abstract]
  • Milan Hájek, Přemysl Šilhavý and Jaroslav Málek
    Metal-oxide induced redox chain addition of tetrachloromethane to a carbon-carbon double bond
    1980, Vol. 45, Issue 12, pp. 3488–3501 [Abstract]
  • Luděk Vodička, Jan Tříska and Milan Hájek
    Synthesis, separation, and identification of 4-bromoadamantan-2-one stereoisomers
    1980, Vol. 45, Issue 10, pp. 2670–2674 [Abstract]
  • Otto Exner, Václav Jehlička, Luděk Vodička and Pavel Jakoubek
    Dipole moments induced in larger molecules. 1- And 4-substituted diamantanes
    1980, Vol. 45, Issue 9, pp. 2400–2409 [Abstract]
  • Milan Hájek and Jaroslav Málek
    Reactivity of cycloalkenes in the radical addition reaction with ethyl cyanoacetate
    1980, Vol. 45, Issue 7, pp. 1940–1949 [Abstract]
  • Luděk Vodička, Jiří Burkhard and Josef Janků
    Preparation of higher adamantane homologues by reaction of adamantan-1-ol with heptenes in sulfuric acid
    1980, Vol. 45, Issue 3, pp. 835–842 [Abstract]
  • Milan Hájek and Jaroslav Málek
    Catalytic activity of cupric oxide in addition reactions of alkyl cyanoacetates with 1-alkenes
    1979, Vol. 44, Issue 12, pp. 3695–3704 [Abstract]
  • Luděk Vodička and Josef Hlavatý
    Synthesis and separation of stereoisomers of 1,4- and 2,4-dihydroxyadamantanes
    1979, Vol. 44, Issue 11, pp. 3296–3300 [Abstract]
  • Milan Hájek, Přemysl Šilhavý and Jaroslav Málek
    Radical cyclisation reactions of ketones with alkenes initiated by silver(II) and lead(IV) oxides
    1979, Vol. 44, Issue 8, pp. 2393–2400 [Abstract]
  • Jan Schraml, Harald Jancke, Günter Engelhardt, Luděk Vodička and Josef Hlavatý
    13C NMR spectra of hydroxy adamantanes additivity in 13C NMR spectra of dihydroxyadamantanes
    1979, Vol. 44, Issue 7, pp. 2230–2237 [Abstract]
  • Milan Hájek, Božena Špirková and Jaroslav Málek
    Radical addition of lactones to 1-alkenes initiated by cupric oxide
    1979, Vol. 44, Issue 5, pp. 1608–1612 [Abstract]
  • Jan Tříska, Luděk Vodička and Josef Hlavatý
    Beckmann rearrangement of 2-oximinoadamantane in hydrobromic acid
    1979, Vol. 44, Issue 5, pp. 1448–1452 [Abstract]
  • František Skácel, Milan Hájek, František Liška, Petr Trška and Zbyněk Ksandr
    Application of shift reagents in 1H and 19F NMR spectroscopy. Interactions with chlorofluoroalkanols C3, C4
    1979, Vol. 44, Issue 5, pp. 1440–1447 [Abstract]
  • Gustav Šebor, Vladimír Kubelka and Otto Weisser
    Separation and characterization of vanadylporphyrins from Romashkino petroleum
    1979, Vol. 44, Issue 2, pp. 551–557 [Abstract]
  • Jiří Karhan, Milan Hájek, Zbyněk Ksandr and Luděk Vodička
    Application of the relaxation reagent Gd(FOD)3 (1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedionate)gadolinium(III) in 1H NMR spectroscopy of adamantoid compounds
    1979, Vol. 44, Issue 2, pp. 533–541 [Abstract]
  • Jan Schraml, Jaroslav Včelák, Václav Chvalovský, Günter Engelhardt, Harald Jancke, Luděk Vodička and Josef Hlavatý
    29Si and 13C-NMR spectra and steric effects in mono- and bis(trimethylsiloxy)adamantanes
    1978, Vol. 43, Issue 12, pp. 3179–3191 [Abstract]
  • Luděk Vodička, Josef Janků and Jiří Burkhard
    Bromination of adamantane in the presence of nitric acid
    1978, Vol. 43, Issue 5, pp. 1410–1412 [Abstract]
  • Jaroslava Podehradská, Milan Hájek and Slavoj Hála
    1H-NMR spectra of high-boiling adamantylaromatic compounds
    1978, Vol. 43, Issue 1, pp. 250–256 [Abstract]
  • Zdeněk Kafka, Vlastimil Galík and Luděk Vodička
    Study of reactivity of some 1,3,5-triazaadamantane derivatives
    1978, Vol. 43, Issue 1, pp. 151–155 [Abstract]