00000nam 2200000za 4500 9.865047 CaOODSP 20221107161714 cr ||||||||||| 181121s1976 onc #ot f|0| 0 eng d 0660006529 CaOODSP eng eng fre n-cn--- M38-13/76-32E-PDF M38-13/76-32 Effect of thermal hydrocracking on the distribution of compound-types in Athabasca bitumen [electronic resource] / A. E. George ... [et al.]. [Ottawa] : Energy, Mines and Resources Canada, 1976. ii, 17 p. : figures. CANMET report ; 76-32E Cover title. "May 1976." Includes bibliographic references. "The changes in the chemical.composition of Athabasca bitumen due to thermal hydrocracking under varying severities of treatment were studied. The main reaction appeared to be the cleavage of saturated hydrocarbon structures from aromatic clusters resulting in large increases in the saturated hydro-carbon fraction as well as decreases in molecular weights. The mononuclear promatic fraction increased very substantially in weight with severity of treatment but the increase in the number of mononuclear aromatic structures was even more marked. The dinuclear aromatic fraction decreased in weight but the number of these structures increased. The polynuclear aromatic and polar fractions decreased markedly in weight but the number of polynuclear aromatic structures changed only slightly. The most severe treatment almost eliminated the asphaltenes and the basic materials. The changes in the sulphur contents of the various fractions were followed and are discussed. Attempts are made to partially explain the conversions during these treatments by thermal hydrogen transfer-aromatization reactions"--Abstract. Includes abstract in French. gccst Petroleum gccst Scientific research George, A. E., 1936- Canada. Energy, Mines and Resources Canada. CANMET report ; 76-32E. (CaOODSP)9.852792 PDF 587 KB https://publications.gc.ca/collections/collection_2018/rncan-nrcan/m38-13/M38-13-76-32-eng.pdf