Transformation of Petroleum Asphaltenes in Supercritical Alcohols – A Tool to Change H/C Ratio and Remove S and N Atoms from Refined Products Full article
| Journal |
Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
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| Output data | Year: 2019, Volume: 329, Pages: 177-186 Pages count : 11 DOI: 10.1016/j.cattod.2018.10.066 | ||||
| Tags | asphaltenes upgrading; supercritical alcohols; desulfurization; denitrogenation; CHNSO analysis; van Krevelen diagram | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 15-19-00119 |
Abstract:
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.
Cite:
Chibiryaev A.M.
, Kozhevnikov I.V.
, Martyanov O.N.
Transformation of Petroleum Asphaltenes in Supercritical Alcohols – A Tool to Change H/C Ratio and Remove S and N Atoms from Refined Products
Catalysis Today. 2019. V.329. P.177-186. DOI: 10.1016/j.cattod.2018.10.066 WOS Scopus РИНЦ ANCAN OpenAlex
Transformation of Petroleum Asphaltenes in Supercritical Alcohols – A Tool to Change H/C Ratio and Remove S and N Atoms from Refined Products
Catalysis Today. 2019. V.329. P.177-186. DOI: 10.1016/j.cattod.2018.10.066 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jul 21, 2018 |
| Accepted: | Oct 26, 2018 |
| Published online: | Nov 8, 2018 |
| Published print: | Jun 1, 2019 |
Identifiers:
| Web of science: | WOS:000462764600022 |
| Scopus: | 2-s2.0-85056570332 |
| Elibrary: | 38622323 |
| Chemical Abstracts: | 2018:2242538 |
| Chemical Abstracts (print): | 170:403656 |
| OpenAlex: | W2899731278 |