Designing supported ZnNi catalysts for the removal of oxygen from bio-liquids and aromatics from diesel

Loricera, C.V.; Castaño, Pedro; Infantes‐Molina, Antonia; Hita, Idoia; Gutiérrez, Alazne; Arandes, José M.; Fierro, J.L.G.; Pawelec, B.

doi:10.1039/c2gc35901d

Cited by 39 publications

(24 citation statements)

References 50 publications

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“…The effect of support on the catalytic activity was also investigated by Loricera and co-workers. ZnNi/Ti (TiO 2 ), ZnNi/2Ti-Si (hybrid 2TiO 2 -SiO 2 ), ZnNi/S15 (SBA-15) and ZnNi/Ti-S15 (SBA-15 decorated with TiO 2 ) were used for the HDO of phenol [98]. It was found that large BET surface area and acidity of supports were conducive to improving the catalytic efficiency.…”

Section: Non-noble Metal Catalystsmentioning

confidence: 99%

An Overview on Catalytic Hydrodeoxygenation of Pyrolysis Oil and Its Model Compounds

et al. 2017

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Abstract:Pyrolysis is considered the most promising way to convert biomass to fuels. Upgrading biomass pyrolysis oil is essential to produce high quality hydrocarbon fuels. Upgrading technologies have been developed for decades, and this review focuses on the hydrodeoxygenation (HDO). In order to declare the need for upgrading, properties of pyrolysis oil are firstly analyzed, and potential analysis methods including some novel methods are proposed. The high oxygen content of bio-oil leads to its undesirable properties, such as chemical instability and a strong tendency to re-polymerize. Acidity, low heating value, high viscosity and water content are not conductive to making bio-oils useful as fuels. Therefore, fast pyrolysis oils should be refined before producing deoxygenated products. After the analysis of pyrolysis oil, the HDO process is reviewed in detail. The HDO of model compounds including phenolics monomers, dimers, furans, carboxylic acids and carbohydrates is summarized to obtain sufficient information in understanding HDO reaction networks and mechanisms. Meanwhile, investigations of model compounds also make sense for screening and designing HDO catalysts. Then, we review the HDO of actual pyrolysis oil with different methods including two-stage treatment, co-feeding solvents and in-situ hydrogenation. The relative merits of each method are also expounded. Finally, HDO catalysts are reviewed in order of time. After the summarization of petroleum derived sulfured catalysts and noble metal catalysts, transitional metal carbide, nitride and phosphide materials are summarized as the new trend for their low cost and high stability. After major progress is reviewed, main problems are summarized and possible solutions are raised.

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Section: Non-noble Metal Catalystsmentioning

confidence: 99%

An Overview on Catalytic Hydrodeoxygenation of Pyrolysis Oil and Its Model Compounds

et al. 2017

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“…Due to the structure and availability, lignin is considered as a promising resource of aromatic hydrocarbons which are industrially important feedstock for producing a wide variety of useful chemicals such as polymers, pharmaceuticals, agrochemicals and electronic chemicals [5]. Hydrodeoxygenation (HDO) is an important technology for upgrading of lignin and related chemicals into aliphatic [6][7][8][9] and aromatic hydrocarbons [10][11][12][13][14][15][16]. For the synthesis of aromatic hydrocarbons, conventional sulfided CoMo catalysts show good activity [17][18][19]; however, they suffer from the deactivation caused by coke formation and in-situ generated water in the HDO reaction [20].…”

Section: Introductionmentioning

confidence: 99%

Selective hydrodeoxygenation of lignin-related 4-propylphenol into n-propylbenzene in water by Pt-Re/ZrO2 catalysts

et al. 2014

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Abstract:Bimetallic Pt-Re/ZrO 2 catalysts were developed for the selective hydrodeoxygenation of 4-propylphenol as a lignin model to n-propylbenzene in water. The addition of Re to Pt/ZrO 2 improved the catalyst stability and product selectivity. Reaction temperature greatly affected not only reaction efficiency but also product distribution. n-Propylbenzene was obtained in up to 73% yield with ca. 80% selectivity. After the reaction, the catalyst was deactivated possibly due to waterinduced wrapping of Pt nanoparticles in ZrO 2 . The reaction may involve the hydrogenation of 4-propylphenol to 4-propylcyclohexanol, followed by the dehydration to give 4-propylcyclohexene and the subsequent dehydrogenation to n-propylbenzene.

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“…Various supports have been investigated, including alumina, silica, active carbon, and zeolites. [11][12][13][14] Their various acidities and pore structures produced different catalytic activities when hydrodeoxygenating bio-oil. For example, an early study showed that Pt clusters dispersed on zeolite had a much better catalytic activity than those on alumina or silica when hydrodeoxygenating phenol-type bio-oil compounds.…”

Section: Introductionmentioning

confidence: 99%

Hydrodeoxygenation of bio-oil over Pt-based supported catalysts: importance of mesopores and acidity of the support to compounds with different oxygen contents

Wang¹,

Wu²,

Wang³

2013

RSC Adv.

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Hydrodeoxygenation of bio-oil over Pt-based supported catalysts: importance of mesopores and acidity of the support to compounds with different oxygen contents3 The importance of the acidity and mesoporous structure to the hydrodeoxygenation activity of catalysts for bio-oil upgrading was investigated. By testing three model bio-oil compounds, weshowed that catalysts with a strong acidity (e.g. ZSM-5) have a high hydrodeoxygenation activity, while the mesoporous structure of the support can further improve the catalytic performance of ZSM-5.

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Designing supported ZnNi catalysts for the removal of oxygen from bio-liquids and aromatics from diesel

Cited by 39 publications

References 50 publications

An Overview on Catalytic Hydrodeoxygenation of Pyrolysis Oil and Its Model Compounds

An Overview on Catalytic Hydrodeoxygenation of Pyrolysis Oil and Its Model Compounds

Selective hydrodeoxygenation of lignin-related 4-propylphenol into n-propylbenzene in water by Pt-Re/ZrO2 catalysts

Hydrodeoxygenation of bio-oil over Pt-based supported catalysts: importance of mesopores and acidity of the support to compounds with different oxygen contents

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