Detail of "55199-72-9"

Reference

Geochemical application of sterane and triterpane biological marker compounds in the Linyi Basin

Geochemical application of sterane and triterpane biological marker compounds in the Linyi Basin. Hong, Zhi Hua; Li, Hui Xiang; Rullkoetter, J.; Mackenzie, A. S. (Geol. Res. Inst., Shandong, Peop. Rep. China). Org. Geochem., 10(1-3), 433-9 (English) 1986. CODEN: ORGEDE. 51271-94-4 and 53584-59-1 which are cas registry numbers are also used here. ISSN: 0146-6380. DOCUMENT TYPE: Journal CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Section cross-reference(s): 53 The satd. and arom. hydrocarbon fractions of 41 crude oils and 53 rock exts. from the Linyi Basin, China, were investigated for their biol. marker compn. Hopane and sterane C No. distributions were useful for oil-source rock correlation, whereas sterane and hopane isomerization and steroid aromatization were used for maturity assessment of both oils and sediments. In the immature range, the isomer distributions of 17b(H)-trisnorhopane [51271-94-4], 17a(H)-trisnorhopane [53584-59-1], and 18a(H)-trisnorneohopane [55199-72-9] followed a systematic trend explicable on the basis of the relative stabilities of these structures. The major source rock is the ES3 member of the Shahejie Formation (Late Oligocene). Petroleum generation becomes significant at 2500 m (95°), and oil expulsion from source rocks occurs between about 3200 and 4200 m (120-150°). .

Biological markers in bitumens and pyrolyzates of Upper Cretaceous bituminous chalks from the Ghareb Formation (Israel)

Biological markers in bitumens and pyrolyzates of Upper Cretaceous bituminous chalks from the Ghareb Formation (Israel). Rullkoetter, Juergen; Aizenshtat, Zeev; Spiro, Baruch (Inst. Pet. Org. Geochem., Kernforschungsanlage Juelich G.m.b.H., Juelich D-5170/1, Fed. Rep. Ger.). Geochim. Cosmochim. Acta, 48(1), 151-7 (English) 1984. CODEN: GCACAK. ISSN: 0016-7037. 71117-87-8 and 67597-29-9 are cas registry numbers of chemicals which are used as reagents here. DOCUMENT TYPE: Journal CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Section cross-reference(s): 30, 32 The sterane and triterpane distributions of 3 bituminous chalks from the title formation were investigated both in the original extractable bitumens and in exts. obtained after pyrolysis of whole rock and isolated kerogen samples at 450°. Pyrolysis was performed in a closed system under hydrous (whole rock) and anhyd. conditions (isolated kerogens). The C no. distributions of steranes and triterpanes differ significantly between original bitumen and pyrolyzates. Unlike the bitumens, in which diasteranes were not detected, the anhyd. pyrolyzates contain small amts. of diasteranes. The presence of water during pyrolysis leads to an increase of sterane isomerization, the abundant formation of diasteranes and an increase of the 18a(H)-trisnorneohopane [55199-72-9]/17a(H)-trisnorhopane [53584-59-1] ratio. Sterane isomerization maturation parameters show a closer match between original bitumen and pyrolyzates after pyrolysis in a closed system when compared with pyrolysis in an open system. .