Molecular characterization of polar heteroatom species in oilsands bitumen-derived vacuum residue fractions by Fourier transform ion cyclotron resonance mass spectrometry
Sign Up to like & getrecommendations! Published in 2019 at "Petroleum Science"
DOI: 10.1007/s12182-019-0345-3
Abstract: A Canadian in situ oilsands bitumen-derived vacuum residue (VR) was subjected to supercritical fluid extraction and fractionation (SFEF) into 13 extractable fractions and an unextractable end-cut and characterized by positive- and negative-ion electrospray ionization (ESI)… read more here.
Keywords: derived vacuum; bitumen derived; oilsands bitumen; vacuum residue ... See more keywords
Beneficial roles of H-donors as diluent and H-shuttle for asphaltenes in catalytic upgrading of vacuum residue
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DOI: 10.1016/j.cej.2016.12.119
Abstract: Abstract The effects of various organic solvents having different H-donor index, asphaltene solubility, and alkyl-substitution on the upgrading of vacuum residue (VR) were investigated under thermal cracking or catalytic hydrocracking conditions at 673 K and 10.0 MPa… read more here.
Keywords: vacuum residue; coke formation; roles donors; upgrading vacuum ... See more keywords
High-temperature corrosion of a UNS K03006 steel pipe in a crude oil vacuum residue distillation unit
Sign Up to like & getrecommendations! Published in 2018 at "Engineering Failure Analysis"
DOI: 10.1016/j.engfailanal.2018.05.016
Abstract: Abstract A carbon steel pipe of ASTM A106 grade B [UNS K03006] specification was in service of vacuum residue in a crude oil vacuum unit at temperatures ranging from 293 to 350 °C. After 20 years of… read more here.
Keywords: crude oil; corrosion; vacuum residue; oil vacuum ... See more keywords
Accelerated pre-coking of NiMo/γ-Al2O3 catalyst: Effect on the hydroprocessing activity of vacuum residue
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DOI: 10.1016/j.fuel.2018.08.026
Abstract: Abstract A pre-coking process for acceleration of hydrotreating catalyst deactivation is proposed in this work. An artificial pre-coked catalyst is synthesized by using methylnaphthalene as a coke precursor. During the pre-coking process, coke precursor got… read more here.
Keywords: microscopy; catalyst; vacuum residue; activity ... See more keywords
Upgrading of vacuum residue with chemical looping partial oxidation over Fe-Mn mixed metal oxides
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DOI: 10.1016/j.fuel.2018.11.070
Abstract: Abstract Heavy oil upgrading to produce light fuels is an important strategy to solve the depletion of light crude oil. Partial oxidation using transition metal oxides as oxygen carrier is a potential method for heavy… read more here.
Keywords: metal oxides; partial oxidation; oxidation; vacuum residue ... See more keywords
Conversion of V-porphyrin in asphaltenes into V2S3 as an active catalyst for slurry phase hydrocracking of vacuum residue
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DOI: 10.1016/j.fuel.2019.116620
Abstract: Abstract The asphaltene hydrocracking (HCK) was carried out at 693 K and 11.0 MPa H2 to examine the phase transformation of V species contained in the asphaltene and the catalytic activity of the resulting V compounds in… read more here.
Keywords: porphyrin asphaltenes; phase; vacuum residue; conversion ... See more keywords
Effects of dispersed MoS2 catalysts and reaction conditions on slurry phase hydrocracking of vacuum residue
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DOI: 10.1016/j.jcat.2016.11.015
Abstract: Abstract The slurry phase hydrocracking (HCK) of vacuum residue (VR) in the presence of dispersed MoS 2 catalyst was investigated under varying temperature, pressure, and reaction time. Extended X-ray absorption fine structure (EXAFS) measurements were… read more here.
Keywords: phase; slurry phase; vacuum residue; reaction ... See more keywords
Reactivity and Comprehensive Kinetic Modeling of Deasphalted Vacuum Residue Thermal Cracking
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DOI: 10.1021/acs.energyfuels.6b02544
Abstract: Upgrading and refining of heavy oil and bitumen has become a costly practice in the last decades, creating a need for new processes to appropriately convert these heavy feedstocks into lighter and more valuable materials.… read more here.
Keywords: deasphalted vacuum; comprehensive kinetic; vacuum residue; thermal cracking ... See more keywords
Hydroconversion of Vacuum Residue of a Blend of Western Siberian Oils in the Presence of Ex Situ Synthesized Suspensions of Nanosized Catalysts
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DOI: 10.1134/s0965544119130061
Abstract: Concentrated suspensions of nanosized МоS2, МоS2+Ni7S6, Ni7S6, Fe1– xS, and (NH4)0.25 · WO3 particles with an average size of 273–364 nm have been synthesized from reverse emulsions of aqueous solutions of molybdenum, nickel, iron, and… read more here.
Keywords: hydroconversion vacuum; presence; hydroconversion; suspensions nanosized ... See more keywords
Effect of Styrene Additives on the Cracking Kinetics of Components of High-Sulfur Vacuum Residue
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DOI: 10.1134/s0965544120030111
Abstract: Abstract In view of depleting light oil reserves, the involvement of heavy petroleum feedstocks (bitumens, atmospheric residues, vacuum residues) in oil refining is becoming increasingly promising. The conversion of these feedstocks requires the development of… read more here.
Keywords: vacuum residue; high sulfur; vacuum; sulfur vacuum ... See more keywords
Non-Porous Sulfonic Acid Catalysts Derived from Vacuum Residue Asphaltenes for Glycerol Valorization via Ketalization with Acetone
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DOI: 10.3390/catal11070776
Abstract: In this study, an approach for the preparation of heterogeneous acid catalysts based on asphaltenes isolated from vacuum residue is proposed. Varying the conditions for the sulfonation of asphaltenes made it possible to obtain materials… read more here.
Keywords: vacuum residue; value; glycerol; acid catalysts ... See more keywords