TY - JOUR

T1 - Role of Supercritical Water and Pyrite in Transformations of Propylene

AU - Fedyaeva, O. N.

AU - Vostrikov, A. A.

AU - Antipenko, V. R.

AU - Shishkin, A. V.

AU - Kolobov, V. I.

AU - Sokol, M. Ya

PY - 2017/12/1

Y1 - 2017/12/1

N2 - The effect of supercritical water and pyrite on the transformations of propylene upon the uniform heating (1.5 K/min) of reagents to 718 K is studied. The products are analyzed by IR and 1H NMR spectroscopy, mass-spectrometry and gas chromatography/mass-spectrometry. It is established based on the temperature dependences of the pressure of reagents that the addition of pyrite in the absence of water gives rise to a decrease in the starting temperature of propylene oligomerization. In the absence of pyrite, the addition of water suppresses propylene oligomerization. A synergetic effect of supercritical water and pyrite on the degree of conversion of propylene is revealed. It is shown that hydrogen sulfide, thiols, and methyl-derivatives of thiophene are formed in the presence of pyrite, as well as the yield of aromatic and polyaromatic hydrocarbons increases. The mechanisms of the observed processes are discussed.

AB - The effect of supercritical water and pyrite on the transformations of propylene upon the uniform heating (1.5 K/min) of reagents to 718 K is studied. The products are analyzed by IR and 1H NMR spectroscopy, mass-spectrometry and gas chromatography/mass-spectrometry. It is established based on the temperature dependences of the pressure of reagents that the addition of pyrite in the absence of water gives rise to a decrease in the starting temperature of propylene oligomerization. In the absence of pyrite, the addition of water suppresses propylene oligomerization. A synergetic effect of supercritical water and pyrite on the degree of conversion of propylene is revealed. It is shown that hydrogen sulfide, thiols, and methyl-derivatives of thiophene are formed in the presence of pyrite, as well as the yield of aromatic and polyaromatic hydrocarbons increases. The mechanisms of the observed processes are discussed.

KW - oligomerization

KW - propylene

KW - pyrite

KW - sulfidation

KW - supercritical water

KW - synergetic effect

KW - OXIDATION

KW - HYDROGENATION

KW - CONVERSION

KW - COAL

KW - THERMAL-DECOMPOSITION

KW - FLOW

KW - GASIFICATION

KW - REACTION-MECHANISMS

KW - BITUMEN

KW - PYROLYSIS

UR - http://www.scopus.com/inward/record.url?scp=85043270364&partnerID=8YFLogxK

U2 - 10.1134/S1990793117070089

DO - 10.1134/S1990793117070089

M3 - Article

AN - SCOPUS:85043270364

VL - 11

SP - 1117

EP - 1128

JO - Russian Journal of Physical Chemistry B

JF - Russian Journal of Physical Chemistry B

SN - 1990-7931

IS - 7

ER -