One-pot catalytic reaction to produce high-carbon-number dimeric deoxygenated hydrocarbons from lignin-derived monophenyl vanillin using Al 2 O 3 -cogelled Ru nanoparticles

Yati, Indri; Dwiatmoko, Adid Adep; Yoon, Ji Sun; Choi, Ji‐Won; Suh, Dong Jin; Jae, Jungho; Ha, Jeong‐Myeong

doi:10.1016/j.apcata.2016.07.012

Cited by 27 publications

(13 citation statements)

References 29 publications

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“…However, high costs of these catalysts makes it necessary to optimize the product yield and to maximize the dispersion of the metal component the latter is needed since the rates of catalytic reaction are, in general, proportional to the number of available surface metal atoms. Specifically, hydrodeoxygenation of phenolic lignin derived compounds studied in this work requires high metal dispersion [32].…”

Section: Introductionmentioning

confidence: 99%

Metal catalysts supported on biochars: Part I synthesis and characterization

Santos

Mäki‐Arvela

Μοnzόn

et al. 2020

Applied Catalysis B: Environmental

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Section: Introductionmentioning

confidence: 99%

Metal catalysts supported on biochars: Part I synthesis and characterization

Santos

Mäki‐Arvela

Μοnzόn

et al. 2020

Applied Catalysis B: Environmental

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“…22,23 Noble metal nanoparticles are excellent catalysts for hydrogenolysis, though the cost is high. 24−29 Ni is a cheaper substitute of noble metals for efficient dissociative chemisorption of gas phase H 2 , but Ni also promotes the aromatic ring hydrogenation. 4,30 However, Ni-based bimetallic catalysts show a better performance.…”

Section: Introductionmentioning

confidence: 99%

“…The catalytic activity increases with the surface acidity, though catalyst poisoning is a problem . With the base metal catalysts, undesirable side reactions are commonly observed. , Noble metal nanoparticles are excellent catalysts for hydrogenolysis, though the cost is high. − Ni is a cheaper substitute of noble metals for efficient dissociative chemisorption of gas phase H 2 , but Ni also promotes the aromatic ring hydrogenation. , However, Ni-based bimetallic catalysts show a better performance . Heeres et al investigated the catalytic hydrotreatment of fast pyrolysis oil of lignocellulose biomass employing a δ-Al 2 O 3 supported Cu-Ni catalyst.…”

Section: Introductionmentioning

confidence: 99%

Ceria Promoted Cu-Ni/SiO₂ Catalyst for Selective Hydrodeoxygenation of Vanillin

et al. 2019

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A ceria (CeO 2 ) promoted Cu-Ni bimetallic catalyst supported on SiO 2 (Cu-Ni/CeO 2 -SiO 2 ) was prepared and evaluated for catalytic hydrodeoxygenation (HDO) of vanillin. Silica supported monometallic Cu and Ni catalysts and bimetallic Cu-Ni catalyst (Cu/SiO 2 , Ni/SiO 2 , and Cu-Ni/SiO 2 ), without a ceria promoter, were also synthesized and tested for the same application. The highest conversion of vanillin was achieved with the Cu-Ni/CeO 2 -SiO 2 catalyst. Vanillyl alcohol was the sole product in the initial 2 h, followed by the formation of 2-methoxy-4-methylphenol, which was observed. Characterization of the synthesized catalysts revealed the presence of overlapping crystalline phases of CuO, NiO, and CeO 2 on the Cu-Ni/CeO 2 -SiO 2 surface. We extended our study to find out the results of using CeO 2 as the support of the Cu-Ni bimetallic catalyst (Cu-Ni/CeO 2 ). Partial incorporation of Cu and Ni cations into the ceria lattice took place, leading to the decrease of specific surface area and a concomitant compromise in the conversion. In the case of the Cu-Ni/CeO 2 -SiO 2 catalyst, the higher conversion was accredited to the facile formation of Cu + active centers by the synergistic interaction between Ce +4 /Ce +3 and Cu +2 /Cu + redox couples and the incorporation of oxygen vacancies on the catalyst surface.

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“…While different catalysts including metals [2][3][4][5][6][7][8][9][10][11], metal sulfides [12][13][14], metal phosphides [15][16][17][18][19] and metal carbides [20][21][22] have been investigated in the HDO process, the supported metal catalysts such as Pt, Pd, Ru and Fe have been shown to be promising for the hydrodeoxygenation reactions of phenolic compounds [2][3][4][5][6][7][8][9][10]. Various aspects of the metal catalysts such as the incorporation of bifunctionality [23][24][25][26][27][28][29][30][31], use of bimetallics, [32][33][34][35][36][37][38] and metal-support effects [39][4...…”

Section: Introductionmentioning

confidence: 99%

Mechanistic analysis of the role of metal oxophilicity in the hydrodeoxygenation of anisole

Tan

Wang

Long

et al. 2017

Journal of Catalysis

118

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A combined experimental and theoretical comparative study of the hydrodeoxygenation (HDO) of anisole was conducted over Pt, Ru, and Fe metals. In the experimental part, an inert silica support was used to directly compare the catalytic activity and selectivity of the three metals at 375 ºC under H 2 flow at atmospheric pressure. In parallel, for density functional theory (DFT) calculations the close-packed Pt(111), Ru(0001), and Fe(110) surfaces were employed to compare the possible mechanisms on these metals. It was observed that over Pt/SiO 2 and Ru/SiO 2 catalysts, both phenol and benzene were the major products in a phenol/benzene ratio that decreased with the level of conversion. By contrast, over the Fe/SiO 2 catalyst, no phenol formation was detected, even at low conversions. The DFT results show that over all the three metal surfaces the dehydrogenation at the-CH 3 side group occurs before the CO bond breaking. This removal of H atoms from the-CH 3 group facilitates the activation of the aliphatic C alkyl-O bond. Therefore, it can be concluded that a common intermediate for the three metals is a surface phenoxy and the significant differences between the three metals is related to the reactivity of this surface phenoxy. That is, over Pt(111) and Ru(0001) the phenoxy intermediate is hydrogenated to phenol, which in turn, can undergo further HDO to form benzene. This result is in agreement with the experiments over Pt/SiO 2 and Ru/SiO 2 catalysts. Over these catalysts, both phenol and benzene are major products, with the selectivity to benzene increasing with conversion at the expense of phenol. In contrast, over the Fe(110) surface, the strong metal oxophilicity makes the direct cleavage of the CO bond in the surface phenoxy easier than

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One-pot catalytic reaction to produce high-carbon-number dimeric deoxygenated hydrocarbons from lignin-derived monophenyl vanillin using Al 2 O 3 -cogelled Ru nanoparticles

Cited by 27 publications

References 29 publications

Metal catalysts supported on biochars: Part I synthesis and characterization

Metal catalysts supported on biochars: Part I synthesis and characterization

Ceria Promoted Cu-Ni/SiO₂ Catalyst for Selective Hydrodeoxygenation of Vanillin

Mechanistic analysis of the role of metal oxophilicity in the hydrodeoxygenation of anisole

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One-pot catalytic reaction to produce high-carbon-number dimeric deoxygenated hydrocarbons from lignin-derived monophenyl vanillin using Al 2 O 3 -cogelled Ru nanoparticles

Cited by 27 publications

References 29 publications

Metal catalysts supported on biochars: Part I synthesis and characterization

Metal catalysts supported on biochars: Part I synthesis and characterization

Ceria Promoted Cu-Ni/SiO2 Catalyst for Selective Hydrodeoxygenation of Vanillin

Mechanistic analysis of the role of metal oxophilicity in the hydrodeoxygenation of anisole

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Ceria Promoted Cu-Ni/SiO₂ Catalyst for Selective Hydrodeoxygenation of Vanillin