Hydrotreatment of vegetable oil for green diesel over activated carbon supported molybdenum carbide catalyst

Wang, Fei; Jiang, Jianchun; Liu, Peng; Li, Fanglin; Ye, Jun; Zhou, Minghao

doi:10.1016/j.fuel.2017.12.059

Cited by 98 publications

(25 citation statements)

References 31 publications

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“…Wang et al have reported the hydrotreatment of fatty acid methyl esters (FAME) to produce diesel-like hydrocarbons, and the lighter hydrocarbon in the kerosene range was derived from a cracking reaction. The highest light hydrocarbons (C 9 -C 14 ) were produced at 33.2% under the catalytic conditions of Mo/Al 2 O 3 at 380 • C, 2 MPa of H 2 pressure, and a three-hour reaction time [33]. The use of FAME has also been studied by Chen et al They investigated the conversion of FAME to alkane fuels by using a 10 wt.% Ni/HZSM-5 catalyst under the operating conditions of 280 • C, a H 2 pressure of 0.8 MPa, and an LHSV of 4 h −1 .…”

Section: Reaction and Optimizationmentioning

confidence: 99%

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

2019

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In this work, hydro-processing was used as an alternative route for producing bio-hydrogenated kerosene (BHK) from refined bleached deodorized palm oil (RPO) in the presence of a 0.5 wt% Pd/Al2O3 catalyst. The Box-Behnken Design was used to determine the effects of reaction temperature, H2 pressure, and reaction time in terms of liquid hourly space velocity (LHSV) on BHK production. The kerosene selectivity was used as the response for staticial interpretation. The results show that both temperature and LHSV produced significant effects, whereas H2 pressure did not. The optimal conditions were found to be 483 °C, 5.0 MPa, and 1.4 h−1 LHSV; these conditions provided approximately 57.30% kerosene selectivity and a 47.46% yield. The BHK product had a good heating value and flash point. However, the mass percentage of carbon and hydrogen was 99.1%, which is just below the minimum standard (99.5%), according to the carbon loss by the reaction pathway to form as CO and CO2. Water can be produced from the reaction induced by oxygen removal, which results in a high freezing point.

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Section: Reaction and Optimizationmentioning

confidence: 99%

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

2019

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“…Alternative catalysts for hydrogenation of furfural can be nickel-molybdenum carbide systems. Previously, the catalysts based on molybdenum carbide, have already proven themselves as highly effective catalysts for bio-oil and vegetable oil hydrotreatment [25,26]. An important feature of these catalysts is their activity in the formation of aromatic hydrocarbons and selectivity in the hydrogenation of alcohol and carbonyl groups [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni–Mo Carbide Catalyst Formation on Furfural Hydrogenation

et al. 2018

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High-loading Ni–Mo carbide catalysts were prepared by the modified gel-combustion method under various thermal treatment conditions. All samples were studied by X-ray diffraction (XRD) analysis, which showed that the catalysts could contain cubic and hexagonal molybdenum carbides, nickel, nickel oxide and Ni–Mo solid solutions, depending on the thermal treatment conditions. Study of catalyst activity and selectivity in the hydrogenation of furfural was carried out in a batch reactor at 150 °C and hydrogen pressure 6.0 MPa. Analysis of the reaction products showed that the highest yields of 2-methylfuran (2-MF) and furfuryl alcohol (FA) were achieved using catalysts synthesized by calcination of the nickel-molybdenum-carbon precursor at 400 °С with the following reduction in a stream of hydrogen at 600 °C. The best results for production of FA with a yield of 80 mol % and 2-MF with a yield of 29 mol % were observed using Ni6MoC–SiO2 (400/600) and Ni1MoC–SiO2 (400/600) catalysts, respectively. It has been shown that the addition of nickel to the carbide molybdenum catalyst significantly increases the activity of the catalytic systems. In addition, nickel also contributes to the formation of products formed by hydrogenation of the aromatic ring tetrahydrofurfuryl alcohol (THFA) and 2-methyltetrahydrofuran (2-MTHF).

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“…This can cause unwanted S-contamination in the end product and thus harmful environmental problems. Taking into account the above, research efforts in the last decade have progressively turned to the metallic form of the transition metals (e.g., Ni, Co, Fe), ,− metal carbide, − metal phosphide, − and metal nitride , catalysts.…”

Section: Introductionmentioning

confidence: 99%

Biodiesel Upgrading to Renewable Diesel over Nickel Supported on Natural Mordenite Catalysts

Fani

Lycourghiotis

Bourikas

et al. 2021

Ind. Eng. Chem. Res.

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In the present work the valorization of natural mordenite as a catalyst support was investigated. Natural mordenite of Greek origin was activated by acid treatment with an aqueous solution of HCl. This treatment led to a material with a high specific surface area (156 m2 g–1). Ni catalysts (10 wt % Ni) supported on activated mordenite were synthesized by incipient wetness impregnation (IWI), wet impregnation (WI), infiltration (INF), and deposition–precipitation (DP). They were evaluated for the biodiesel upgrading into renewable diesel via hydrotreatment. DP was proven to be the most effective preparation method. In fact, an almost total conversion of biodiesel and production of the highest amount of green diesel (14 wt % of the liquid product) was achieved over the catalyst prepared by DP. Its high efficiency was attributed to its enhanced specific surface area, better nickel dispersion (smaller size of crystallites), and the smaller amount of carbon deposits on its surface compared to the other catalysts of this series. When the DP method was adopted, nickel catalysts supported on activated mordenite were synthesized varying active phase loading in the range 10–30 wt %. The catalyst with the maximum nickel loading exhibited high specific surface area and the highest Ni surface area as well as a balanced population of weak and strong acid sites. These characteristics resulted in the highest efficiency for green diesel production (25 wt % of the liquid product) among the catalysts studied.

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Hydrotreatment of vegetable oil for green diesel over activated carbon supported molybdenum carbide catalyst

Cited by 98 publications

References 31 publications

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

Effect of Ni–Mo Carbide Catalyst Formation on Furfural Hydrogenation

Biodiesel Upgrading to Renewable Diesel over Nickel Supported on Natural Mordenite Catalysts

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