Research output: Contribution to journal › Article › peer-review
Transformation of petroleum asphaltenes in supercritical alcohols—A tool to change H/C ratio and remove S and N atoms from refined products. / Chibiryaev, A. M.; Kozhevnikov, I. V.; Martyanov, O. N.
In: Catalysis Today, Vol. 329, 01.06.2019, p. 177-186.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Transformation of petroleum asphaltenes in supercritical alcohols—A tool to change H/C ratio and remove S and N atoms from refined products
AU - Chibiryaev, A. M.
AU - Kozhevnikov, I. V.
AU - Martyanov, O. N.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - The aliphatic alcohols (methanol, ethanol, 1- and 2-propanol) were used for the upgrading of petroleum asphaltenes. The process was performed under supercritical (sc) conditions at 350 °C. CHNSO analysis and GC methods were used to characterize the elemental and chemical composition of the products preliminarily divided into three fractions: hexane-soluble (HSF), benzene-soluble (BSF), and insoluble residue (IR). It was shown that the sc alcohols leads to the decrease of total content of sulfur and nitrogen in the products (HSF + BSF + IR) by 18–23 and 31–33 wt%, correspondingly, as compared with the initial asphaltenes (IA). The highest yield of the soluble fractions (HSF and BSF) was observed for 1-propanol and ethanol. It appeared that the alcohols used as a reaction media are partially consumed by incorporating in the product molecules as alkoxy substituents. The H and O content of HSF and BSF for all alcohols was significantly higher than that for IA. The composition of hexane-soluble fraction obtained after sc upgrading is quite similar to chemical composition of the diesel fraction, specifically to straight-run gas oil. The efficiency of each supercritical alcohol used for the upgrading of asphaltenes is analyzed and discussed.
AB - The aliphatic alcohols (methanol, ethanol, 1- and 2-propanol) were used for the upgrading of petroleum asphaltenes. The process was performed under supercritical (sc) conditions at 350 °C. CHNSO analysis and GC methods were used to characterize the elemental and chemical composition of the products preliminarily divided into three fractions: hexane-soluble (HSF), benzene-soluble (BSF), and insoluble residue (IR). It was shown that the sc alcohols leads to the decrease of total content of sulfur and nitrogen in the products (HSF + BSF + IR) by 18–23 and 31–33 wt%, correspondingly, as compared with the initial asphaltenes (IA). The highest yield of the soluble fractions (HSF and BSF) was observed for 1-propanol and ethanol. It appeared that the alcohols used as a reaction media are partially consumed by incorporating in the product molecules as alkoxy substituents. The H and O content of HSF and BSF for all alcohols was significantly higher than that for IA. The composition of hexane-soluble fraction obtained after sc upgrading is quite similar to chemical composition of the diesel fraction, specifically to straight-run gas oil. The efficiency of each supercritical alcohol used for the upgrading of asphaltenes is analyzed and discussed.
KW - Asphaltenes upgrading
KW - CHNSO analysis
KW - Denitrogenation
KW - Desulfurization
KW - Supercritical alcohols
KW - van Krevelen diagram
KW - VACUUM RESIDUE
KW - ORGANIC-MATTER
KW - HIGH-YIELD
KW - ACETAL FORMATION
KW - RESONANCE MASS-SPECTROMETRY
KW - ACTIVATED CARBON
KW - BIO-OIL
KW - PARTIAL OXIDATION
KW - BITUMEN CRACKING
KW - HEAVY CRUDE OILS
UR - http://www.scopus.com/inward/record.url?scp=85056570332&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2018.10.066
DO - 10.1016/j.cattod.2018.10.066
M3 - Article
AN - SCOPUS:85056570332
VL - 329
SP - 177
EP - 186
JO - Catalysis Today
JF - Catalysis Today
SN - 0920-5861
ER -
ID: 17471224