Catalytic hydrogenation and asphaltene conversion of athabasca bitumen

Ternan, Marten

doi:10.1002/cjce.5450610511

Cited by 32 publications

(18 citation statements)

References 21 publications

(15 reference statements)

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“…Similar trends on the effect of catalyst mesopore diameter on catalytic activities are obtained in hydrotreating of petroleum heavy oil (Ono et al 1980) and bitumen (Ternan et al 1983). However, since the increase in mesopore diameter caused the decrease in surface area, the apparent activities should be correlated with mesopore diameter by considering the effect of surface area or pore volume (Yen et al 1976).…”

Section: Effect Of Ni-mo Catalyst Mesopore Diameter On Catalytic Actimentioning

confidence: 53%

EFFECT OF Ni-Mo CATALYST MESOPORE DIAMETER ON CATALYTIC ACTIVITIES IN HYDROTREATING OF COAL LIQUID

Yoshimura

Sato

Shimada

et al. 1986

Fuel Science and Technology International

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A mixed 450•‹C+ vacuum residue obtained from Austrarian brown coal-derived oil with hydrogenated creosote oil was hydrogenated to elucidate the effect of catalyst mesopore diameter on the activities of N~-M O -% -A~~O~ catalysts.Catalyst activities, especially for the heavy fraction in feedstock, were evaluated mainly by the conversion of 35O0Cf residue to 350•‹C-oil (HDC) . hydrodesulfurization (HDS) and hydrodenitrogenation (HDN).These decreased in the order of HDS>HDN>HDC; whereas the deactivation rate during 50 hours on stream decreased in the order of HDC>HDN>HDS due to carbonaceous deposits on the catalyst. HDC. HDS and HDN rates per unit surface area of catalyst indicated that the HDS reaction was more strongly influenced by pore diffusion than the HDN and HDC reactions. The heavy ends in feedstock (such as asphaltenes) contained higher amounts of oxygen and nitrogen compounds. These polar compounds tended to be accumulated on the catalyst surface as the precursors for the formation of carbonaceous material deposits.The profile of carbon inside catalyst particle indicated that mesopore size of 22.6 nm might be satisfactory for reactant molecules to diffuse to the center of catalyst particle and access all of the active sites effectively. Downloaded by [UZH Hauptbibliothek / Zentralbibliothek Zürich] at 04:31 03 January 2015 YOSHIMURA ET AL.

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Section: Effect Of Ni-mo Catalyst Mesopore Diameter On Catalytic Actimentioning

confidence: 53%

EFFECT OF Ni-Mo CATALYST MESOPORE DIAMETER ON CATALYTIC ACTIVITIES IN HYDROTREATING OF COAL LIQUID

Yoshimura

Sato

Shimada

et al. 1986

Fuel Science and Technology International

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“…The formation of coke from the higher molecular weight and polar constituents (resin fraction and asphaltene fraction) of petroleum is detrimental to process efficiency and to catalyst performance (Figure 2) (Speight, 1981(Speight, , 1984Ternan, 1983;LePage and Davidson, 1986;Speight, 1987;Dolbear, 1998). Although, little has been acknowledged here of the role oflow-molecular-weight polar species (resins) in coke formation, the resins are presumed to be lower molecular weight analogs of the asphaltenes.…”

Section: Thermal Cracking Of High Molecular Weight Constituentsmentioning

confidence: 97%

Thermal Cracking of Petroleum

Speight¹

2003

Natural and Laboratory-Simulated Thermal Geochemical Processes

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“…Meanwhile, the nanofluid injection promotes the catalytic oil upgrading and the hydrogen production generated from water and water-gas shift reaction [101]. Hence, free alkyl chain molecules convert into lighter molecules, and the hydrogenation of the cracked radicals is performed to avoid addition reactions [102]. N2 injection, and steam injection after foaming nanofluid.…”

Section: Api Gravity Residue Conversion (R%) and Sara Contentmentioning

confidence: 99%

Improvement of Steam Injection Processes Through Nanotechnology: An Approach through in Situ Upgrading and Foam Injection

et al. 2019

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This study aims to evaluate a high-performance nanocatalyst for upgrading of extra-heavy crude oil recovery and at the same time evaluate the capacity of foams generated with a nanofluid to improve the sweeping efficiency through a continuous steam injection process at reservoir conditions. CeO2±δ nanoparticles functionalized with mass fractions of 0.89% and 1.1% of NiO and PdO, respectively, were employed to assist the technology and achieve the oil upgrading. In addition, silica nanoparticles grafted with a mass fraction of 12% polyethylene glycol were used as an additive to improve the stability of an alpha-olefin sulphonate-based foam. The nanofluid formulation for the in situ upgrading process was carried out through thermogravimetric analysis and measurements of zeta potential during eight days to find the best concentration of nanoparticles and surfactant, respectively. The displacement test was carried out in different stages, including, (i) basic characterization, (ii) steam injection in the absence of nanofluids, (iii) steam injection after soaking with nanofluid for in situ upgrading, (iv) N2 injection, and (v) steam injection after foaming nanofluid. Increase in the oil recovery of 8.8%, 3%, and 5.5% are obtained for the technology assisted by the nanocatalyst-based nanofluid, after the nitrogen injection, and subsequent to the thermal foam injection, respectively. Analytical methods showed that the oil viscosity was reduced 79%, 77%, and 31%, in each case. Regarding the asphaltene content, with the presence of the nanocatalyst, it decreased from 28.7% up to 12.9%. Also, the American Petroleum Institute (API) gravity values increased by up to 47%. It was observed that the crude oil produced after the foam injection was of higher quality than the crude oil without treatment, indicating that the thermal foam leads to a better swept of the porous medium containing upgraded oil.

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Catalytic hydrogenation and asphaltene conversion of athabasca bitumen

Cited by 32 publications

References 21 publications

EFFECT OF Ni-Mo CATALYST MESOPORE DIAMETER ON CATALYTIC ACTIVITIES IN HYDROTREATING OF COAL LIQUID

EFFECT OF Ni-Mo CATALYST MESOPORE DIAMETER ON CATALYTIC ACTIVITIES IN HYDROTREATING OF COAL LIQUID

Thermal Cracking of Petroleum

Improvement of Steam Injection Processes Through Nanotechnology: An Approach through in Situ Upgrading and Foam Injection

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