Hydroprocessing of rapeseed pyrolysis bio-oil over NiMo/Al2O3 catalyst

Pstrowska, Katarzyna; Walendziewski, Jerzy; Łużny, Rafał; Stolarski, Marek

doi:10.1016/j.cattod.2013.10.066

Cited by 16 publications

(6 citation statements)

References 25 publications

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“…This results implies that hydrophobic (i.e., non-polar) components were produced by HDO, HDS, HDN, hydrocracking, etc. [12]. In degree of deoxygenation, the 44.9 wt% of oxygen content in the oil phase using 5 wt% Pd/Al2O3 and CuCr2O4 catalysts at 350-400 °C was decreased to 11.8 wt% and 6.1 wt%, respectively.…”

Section: Resultsmentioning

confidence: 93%

“…The remained oxygen in oil phase were mainly phenolics. In addition, the presence of nitrogen components and water cause lower HDO efficiency [12,13]. When the reaction temperature increases, the degree of desulfurization increased with decreasing up to 0.03 wt% of sulfur content in oil phases.…”

Section: Resultsmentioning

confidence: 99%

“…When the reaction temperature increases, the degree of desulfurization increased with decreasing up to 0.03 wt% of sulfur content in oil phases. However, the used catalysts and process parameters could not achieve satisfactorily HDN process because the reaction rate of HDN was generally lower than the one of HDS [12,13].…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Catalytic activity of palladium and copper based catalysts for macroalgal bio-oil hydrotreatment

Jae¹,

Choi²,

Lim³

et al. 2022

Preprint

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Catalytic activity of palladium and copper based catalysts for macroalgal bio-oil hydrotreatment

Jae¹,

Choi²,

Lim³

et al. 2022

Preprint

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show abstract

“…9 Jafarian et al 10 found that the yield of nitrogenates decreased from 38.75% (in the crude spirulina bio-oil) to 12.02% over the NiMo/HMS-ZSM-5 catalyst. Pstrowska et al 11 demonstrated that water involved in the hydrothermal reaction can improve the catalytic activity under a mild hydrorefining process (350 C, 0.5 h, 3 MPa of H 2 ) in which a relatively high 38.4% of hydrodenitrogenation (HDN) was achieved by NiMo/γ-Al 2 O 3 and water participation.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive study of indole catalytic hydrodenitrogenation under hydrothermal conditions

Liu

Zheng

et al. 2021

AIChE Journal

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This article focuses on the catalytic hydrodenitrogenation (HDN) mechanism of indole under hydrothermal conditions. Formic acid (FA), which is a donor of both gaseous hydrogen and liquid hydrogen, can improve indole conversion and total yield of denitrogenated products. Ru/C showed the highest activity among the catalysts in this study for indole conversion at all temperature conditions with the existence of H 2 , and 91.17% indole was converted at 400 C and 60 min. Based on reaction kinetic experiments, a kinetic model was developed mathematically to describe the hydrothermal HDN reaction of indole over the home-made Ni 80 Ru 20 /γ-Al 2 O 3 catalyst, which clearly captured all data trends and fitted the temporal variation of all major liquid products. High activation energy for the formation of the O-containing substance o-cresol from both mathematical fitting and density functional theory (DFT) calculation indicated the rare occurrence of a reaction between the pyrrole ringopening product methyl aniline and H 2 O, consistent with the experimental observation that only a trace of o-cresol was detected.

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“…In addition, pyrolysis is not expensive to implement and is possibly located near the feedstock source. However, it is still necessary to overcome some problems of the pyrolysis process and the use of oil, for example, its poor thermal stability and its corrosiveness . A main problem with liquid oil is the high viscosity, which results in poor atomization of the fuel in the combustion chamber of the engine and leads to operational problems, such as engine deposits.…”

Section: Introductionmentioning

confidence: 99%

Application of industrial solid wastes in catalytic pyrolysis

Qiu

Deng

Zhang

et al. 2017

Asia-Pacific J Chem Eng

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The catalytic pyrolysis is one of the thermochemical patterns for producing chemical products consisting of solid char, liquid oil, and pyrolytic gas. A number of parameters affecting the catalytic pyrolysis process, yields, and properties of products such as the temperature, residence time, heating rate, feedstock type, and the use of catalyst were evaluated in details to promote the process of catalytic pyrolysis. Catalytic pyrolysis has emerged with the use of a catalyst such as red mud, fly ash, copper slag, blast furnace slag, coal gangue, and aluminum dross. In this paper, a brief discussion with recent development on industrial solid wastes as a catalyst in catalytic pyrolysis process is presented.In the process, the liquid oil is of higher quality; in addition, process by-products such as solid char can be used as an adsorbent material, while the quality of pyrolysis gases is improved. Despite all the potential advantages with industrial solid wastes as a catalyst, some limitations such as less reuse of catalyst and high parasitic energy demand are still remaining. The recommended measurements for these challenges include exploration of suitable reactor, catalyst regeneration, and catalytic mechanism optimization.

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Hydroprocessing of rapeseed pyrolysis bio-oil over NiMo/Al2O3 catalyst

Cited by 16 publications

References 25 publications

Catalytic activity of palladium and copper based catalysts for macroalgal bio-oil hydrotreatment

Catalytic activity of palladium and copper based catalysts for macroalgal bio-oil hydrotreatment

A comprehensive study of indole catalytic hydrodenitrogenation under hydrothermal conditions

Application of industrial solid wastes in catalytic pyrolysis

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