M 38 Mass spectrometry study of the pyrolysis of perfluoroolefin oxides [Electronic resource] / N. D. Kagramanov, A. A. Kutin, N. V. Peschanskii, A. Ya. Zapevalov, L. S. German // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1991. - Vol. 40, № 7. - P1321-1325 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The pyrolysis of perfluoroolefin oxides has been studied by gas chromatography/mass spectrometry at 400–700°C, in a current of He (110 dilution, contact time 1 sec). For oxides containing a terminal CF2 group, the sole degradation route is through the elimination of difluorocarbene. Pyrolysis of symmetrical disubstituted oxides results in the elimination of a perfluoroalkylfluorocarbene, which subsequently isomerizes to the corresponding perfluoroolefin. In the pyrolysis of unsymmetric disubstituted oxides the elimination of perfluoroalkylfluorocarbenes occurs by both of the possible routes. Trisubstituted oxides eliminate bis-perfluoroalkylcarbenes. The decomposition of tetrasubstituted oxides proceeds along several directions concurrently \\\\Expert2\\nbo\\Russian Chemical Bulletin\\1991, 40 (7), 1321.pdf |
P 99 Pyrolysis of polystyrene in coal tar and ethylene tar pitches [Электронный ресурс] / E. Andreikov, I. S. Amosova, Yu. A. Dikovinkina, O. Krasnikova, M. G. Pervova // Russian Journal of Applied Chemistry. - 2012. - Vol.85, №1. - P89-97 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): PYROLYSIS -- POLYSTYRENE -- ETHYLENE Аннотация: Pyrolysis of polystyrene in the medium of coal tar pitch and of pitch prepared from ethylene production tar was performed in the temperature range 360-420°C at atmospheric pressure |
P 99 Pyrolysis of polyolefins in high-boiling solvents [Электронный ресурс] / E. Andreikov, I. S. Amosova, Yu. A. Dikovinkina, M. G. Pervova // Solid Fuel Chemistry. - 2013. - Vol.47, №4. - С. 209-219. - Bibliogr. : p. 218-219 (47 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ALIPHATIC HYDROCARBONS -- COAL TAR PITCH -- HIGH-BOILING SOLVENTS Аннотация: The pyrolysis of polyethylene and polypropylene in vacuum residue and coal-tar pitch solvents was studied in a batch reactor at atmospheric pressure in a temperature range of 380-420 °C. Aliphatic hydrocarbons and C 5-C32 normal olefins and isoolefins were the main pyrolysis products of the polyolefins and vacuum residue, which also underwent thermal degradation at these temperatures. The total conversion of a polypropylene-vacuum residue mixture into gaseous and distillate products was nearly additive; upon the pyrolysis of polypropylene in pitch and of polyethylene in vacuum residue and pitch, the yield of distillate products decreased and the paraffin/olefin ratio in these products increased. The observed regularities were explained by hydrogen transfer from the solvents to the intermediate radical products of the thermal decomposition of polymer chains. The reactions of the resulting of olefins with the solvents can also occur to a lesser degree. The greatest deviations from additivity were observed in the pyrolysis of polyethylene in the solvents used |
P 99 Pyrolysis of polycarbonate in a coal-tar pitch / I. Moskalev, V. Strelnikov, L. Safarov, E. Andreikov // European Polymer Congress, Pisa, June 16-21 2013 : book of abstracts . - 2013. - P1-60 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): PYROLYSIS -- COAL TAR PITCH |
P 99 Pyrolysis of polycarbonate in coal-tar pitch / I. Moskalev, V. Strelnikov, L. Safarov, E. Andreikov // European Polymer Congress, Pisa, June 16-21 2013 : book of abstracts . - Pisa, Italy : book of abstracts, 2013. - P. 1-60 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): POLYCARBONATE -- PYROLYSIS -- COAL-TAR PITCH |
A 22 Adsorption properties of mesoporous carbon synthesized by pyrolysis of zinc glycerolate / I. S. Puzyrev, E. I. Andreikov, V. A. Osipova [et al.] // Russian chemical bulletin. - 2021. - Vol. 70, № 5. - P805-810 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Mesoporous carbon of lamellar morphology was synthesized by the thermal decomposition of zinc glycerolate in an inert atmosphere followed by the removal of zinc oxide from the ZnO/C composite. The obtained material was characterized by scanning electron microscopy, Raman spectroscopy, and low-temperature adsorption of nitrogen. Mesoporous carbon is remarkable for a high adsorption rate of methylene blue dye from aqueous solutions with the maximum adsorption capacity toward the dye equal to 1680 mg g−1. |