Decomposition of petroleum or heavy petroleum fractions into more useful lower boiling materials by heating at 500° and 30 psi, over a silica-alumina-magnanese oxide catalyst.
E. Houdry et al., Oil Gas J. 37, 40 (1938); A. N. Sachanen, Chemical Constituents of Petroleum (New York, 1945) p 260; V. Haensel, M. J. Sterba, Ind. Eng. Chem. 40, 1662 (1948); Kirk-Othmer Encyclopedia of Chemical Technology 4, 323, 357 (New York, 1979); E. Boye, Chemiker-Ztg. 81, 341 (1957); S. Gussow et al., Oil Gas J. 78, 96 (1980); C. G. Mosley, J. Chem. Ed. 61, 655 (1984); G. A. Mills, Chemtech 1986, 72; Y. Nishimura, Petrotech 21, 605 (1998).
