Catalytic cracking of heavy oil over TiO2–ZrO2 catalysts under superheated steam conditions

Kondoh, Hisaki; Tanaka, Kumiko; Nakasaka, Yuta; Tago, Teruoki; Masuda, Toshio

doi:10.1016/j.fuel.2015.11.075

Cited by 78 publications

(34 citation statements)

References 18 publications

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“…The neat HDO coke properties were different from those produced under the aqueous conditions. This observation is similar to the effect of steam on FCC reactions in the hydrocracking processes in the petroleum industry ,. The presence of the aqueous medium under subcritical conditions have been reported to influence the hydrodeoxygenation reactions of phenolic compounds through the formation of protons that improved the Lewis acidity of the catalyst .…”

Section: Discussionmentioning

confidence: 99%

Aqueous Phase Synthesis of Hydrocarbons from Reactions of Guaiacol and Low Molecular Weight Oxygenates

Agblevor

Jahromi

2018

ChemCatChem

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Catalytic pyrolysis of lignocellulosic biomass generates water‐soluble low molecular weight oxygenates such as acetic acid, acetone, furfural, butanone, guaiacol, phenol and others in significant quantities that will affect the profitability of the biorefinery process. A new heterogeneous catalyst has been developed that catalyzes the reaction of carbonyl compounds with unsaturated ethers in aqueous medium to produce C6 to C15 hydrocarbons in a one‐pot synthesis. These reactions are called “carbonyl alkylations” because the carbonyl carbon chain was added to the aromatic ring and the oxygen was eliminated without loss of carbon. The C1 to C4 ketones and aldehydes produce alkylated benzenes while the C5 and higher carbonyl compounds alkylated the benzene ring and also opened the benzene ring to produce long chain internal alkene compounds. All the reactions occurred in the aqueous media at 300–350 °C on a supported nickel catalyst. The gaseous products included low molecular weight hydrocarbons such as methane, propane, butane, and pentane. Thus, it has been demonstrated for the first time that it is possible to produce a wide array of hydrocarbons from low molecular weight biomass derived oxygenates.

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Section: Discussionmentioning

confidence: 99%

Aqueous Phase Synthesis of Hydrocarbons from Reactions of Guaiacol and Low Molecular Weight Oxygenates

Agblevor

Jahromi

2018

ChemCatChem

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“…This is because the large bottom water possesses a larger elastic energy which can be used for oil production when the reservoir pressure has been greatly decreased for the last few cycles. For further learning on superheated steam injection for heavy-oil recovery, the following articles are recommended (Xu et al 2013;Chen et al 2018;Kondoh et al 2016;Ajumobi et al 2018;Fan et al 2016;Liu et al 2018).…”

Section: Resultsmentioning

confidence: 99%

Effect of bottom water on performance of cyclic superheated steam stimulation using a horizontal well

Sun

Yao

2019

J Petrol Explor Prod Technol

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Horizontal well has been widely used for heavy-oil recovery in the petroleum industry. Besides, superheated steam has been proved effective in heavy-oil recovery by field practice. In this paper, a numerical model is established with the help of numerical simulator. The effect of bottom water on the productivity of cyclic superheated steam stimulation well has been studied. Some interesting findings show that: (a) the bottom water-channeling phenomenon becomes more severe when the horizontal well is approaching the bottom water. (b) The cyclic oil production fluctuates with periodic number when the horizontal well is close to the bottom water due to the fact that the injected water has an elastic push action on the bottom water. (c) A larger-bottom water size is able to supply a larger elastic energy. While the cyclic oil production of large-bottom water size for the first few cycles is smaller than that with a small-bottom water, it may be turned over for the last few cycles.

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“…At present, there are two approaches for the use of high-viscosity heavy and extra-heavy oil at refineries. The first approach is to remove abundant carbon by coking, thermal or catalytic cracking, or visbreaking [3][4][5]. The second approach is to add extraneous hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Development of (γ-Al2O3-Zeolite Y)/α-Al2O3-HPCM Catalyst based on Highly Porous α-Al2O3-HPCM Support for Decreasing Oil Viscosity

et al. 2020

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Highly porous cellular material (α-Al2O3-HPCM) support was synthesized by the template method. Highly porous support was used for the synthesis of the catalyst. A thin secondary layer with 25–30 μ thick γ-Al2O3 and zeolite Y was applied on the α-Al2O3-HPCM surface ((γ-Al2O3 (85%)-zeolite Y (15%))/α-Al2O3-HPCM). The catalyst based on the highly porous support was tested in a process of decreasing oil viscosity. The catalyst in the form of cylindrical granules and a thermal process of decreasing oil viscosity without the catalyst were used as the basis for comparison. α-Al2O3-HPCM in the catalyst provides low-quantity pores (d < 10 nm) and a quantity of general acid centers compared with the granular catalyst. On the other hand, it shows a more significant oil viscosity decrease (from 2500 to 41 cPs) and a low rate of gas generation (137 mL/h) for the catalyst with highly porous support. A high oil fraction was observed in the presence of the (γ-Al2O3-zeolite Y)/α-Al2O3-HPCM compared to the granular catalyst. The presence of large transport cells (pores) 1500–2000 μ for the catalyst based on highly porous support allowed a work period four times longer than that of experiment only with temperature without catalysts.

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Catalytic cracking of heavy oil over TiO2–ZrO2 catalysts under superheated steam conditions

Cited by 78 publications

References 18 publications

Aqueous Phase Synthesis of Hydrocarbons from Reactions of Guaiacol and Low Molecular Weight Oxygenates

Aqueous Phase Synthesis of Hydrocarbons from Reactions of Guaiacol and Low Molecular Weight Oxygenates

Effect of bottom water on performance of cyclic superheated steam stimulation using a horizontal well

Development of (γ-Al2O3-Zeolite Y)/α-Al2O3-HPCM Catalyst based on Highly Porous α-Al2O3-HPCM Support for Decreasing Oil Viscosity

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