Sulfur-free Ni catalyst for production of green diesel by hydrodeoxygenation

Hachemi, Imane; Kumar, Narendra; Mäki‐Arvela, Päivi; Roine, Jorma; Peurla, Markus; Hemming, Jarl; Salonen, Jarno; Murzin, Dmitry Yu.

doi:10.1016/j.jcat.2016.12.009

Cited by 99 publications

(41 citation statements)

References 45 publications

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“…However, the corrosiveness of sulfur‐containing catalysts had led to attention being focused on the use of Ni‐ and Pd‐containing catalysts. The most promising of these, 5 wt.% Ni supported on γ ‐Al 2 O 3 , SiO 2 or H−Y‐80, achieved 100% conversion of SA in the deoxygenation reaction after 6 h at 300 °C and under a hydrogen pressure of 30 bar . SA was predominantly processed by the decarboxylation pathway with a selectivity of 96% to C17 hydrocarbons and of up to 2% to C18 hydrocarbons when oxide supports were used.…”

Section: Introductionmentioning

confidence: 86%

Molybdenum Nitrides, Carbides and Phosphides as Highly Efficient Catalysts for the (hydro)Deoxygenation Reaction

et al. 2019

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Transition metal nitrides, carbides and phosphides have the potential to replace the expensive and hazardous catalysts typically used for the conversion of fatty acids. However, there has been little research on the influence of treatment conditions and precursor nature on the properties of such catalytic systems. To better understand these dependencies, we synthesized a number of Mo catalysts by temperature‐programmed reduction (700‐900 °C; CH4/N2, N2/H2) using ammonium heptamolybdate, diammonium phosphate and hexamethylenetetramine (HMT) as Mo, C, N and P sources. The presence of HMT in the precursor mixtures ensured the synthesis of pure phase Mo2C, Mo2N and MoP. Catalytic activity in the (hydro)deoxygenation of stearic acid (240 min; 360 °C; 50 bar of H2) decreased in the following order: Mo2C>Mo2N>MoP. However, all of the studied Mo‐based catalysts showed good deoxygenation efficiency and, thus, represent excellent alternatives to traditional noble and sulfur‐containing catalysts.

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Section: Introductionmentioning

confidence: 86%

Molybdenum Nitrides, Carbides and Phosphides as Highly Efficient Catalysts for the (hydro)Deoxygenation Reaction

et al. 2019

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“…Triglycerides and fatty acids from microalgae and jatropha are considered promising candidates for renewable resources of biofuels . The hydrogenation of triglycerides and fatty acids reduces their high content of oxygen and produces higher alkanes suitable as diesel fuels . Among the three hitherto reported methods for the deoxygenation of fatty acids, hydrodeoxygenation, which produces hydrocarbons without cleavage of C−C bonds in the fatty acids, is more atom‐efficient than decarbonylation and decarboxylation, which also cleave C−C bonds in fatty acids ,,.…”

Section: Hydrodeoxygenation Of Carboxylic and Fatty Acidsmentioning

confidence: 99%

The Catalytic Reduction of Carboxylic Acid Derivatives and CO₂ by Metal Nanoparticles on Lewis‐Acidic Supports

Toyao

Siddiki

Kon

et al. 2018

The Chemical Record

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The development of heterogeneous catalysts for green chemical synthesis is currently a growing area in catalysis and sustainable chemistry. Especially the use of renewable carbon resources such as carbon dioxide (CO2) and biomass‐derived compounds (e. g. carboxylic acids, esters, and amides) represent highly attractive research targets. As these substances reside in a high oxidation state, efficient reduction processes are required in order to convert these substrates into useful and value‐added chemicals. Moreover, in the interest of mass production, these substrates should be reduced by molecular H2 and a heterogeneous catalyst. In this context, our group has developed advanced catalysts and established design guidelines for catalysts that promote the reductive transformations of carboxylic acid derivatives and CO2. Our studies show that cooperative catalysis between Lewis‐acidic sites on the catalyst support and supported metal nanoparticles are crucial for the success of these challenging hydrogenations. In this review, we summarize the results of our recent studies on the direct synthesis of value‐added chemicals from CO2 and carboxylic acid derivatives using supported transition‐metal catalysts, and we propose a design concept for heterogeneous catalysts that promote these processes.

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“…The use of vegetable oil for industrial purposes competes with food and feed production [10,11]. However, there are plant oils that do not compete with food production; a good example is tall oil (TO) [12]. Crude tall oil (CTO) (which is about 38-53% fatty acids, 38-53% rosin acids, including 6-20% unsaponifiables and other residues [13]) is the third-largest side stream of the softwood Kraft pulping process after lignin and hemicellulose [14].…”

Section: Introductionmentioning

confidence: 99%

High Functionality Bio-Polyols from Tall Oil and Rigid Polyurethane Foams Formulated Solely Using Bio-Polyols

et al. 2020

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High-quality rigid polyurethane (PU) foam thermal insulation material has been developed solely using bio-polyols synthesized from second-generation bio-based feedstock. High functionality bio-polyols were synthesized from cellulose production side stream—tall oil fatty acids by oxirane ring-opening as well as esterification reactions with different polyfunctional alcohols, such as diethylene glycol, trimethylolpropane, triethanolamine, and diethanolamine. Four different high functionality bio-polyols were combined with bio-polyol obtained from tall oil esterification with triethanolamine to develop rigid PU foam formulations applicable as thermal insulation material. The developed formulations were optimized using response surface modeling to find optimal bio-polyol and physical blowing agent: c-pentane content. The optimized bio-based rigid PU foam formulations delivered comparable thermal insulation properties to the petro-chemical alternative.

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Sulfur-free Ni catalyst for production of green diesel by hydrodeoxygenation

Cited by 99 publications

References 45 publications

Molybdenum Nitrides, Carbides and Phosphides as Highly Efficient Catalysts for the (hydro)Deoxygenation Reaction

Molybdenum Nitrides, Carbides and Phosphides as Highly Efficient Catalysts for the (hydro)Deoxygenation Reaction

The Catalytic Reduction of Carboxylic Acid Derivatives and CO₂ by Metal Nanoparticles on Lewis‐Acidic Supports

High Functionality Bio-Polyols from Tall Oil and Rigid Polyurethane Foams Formulated Solely Using Bio-Polyols

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Sulfur-free Ni catalyst for production of green diesel by hydrodeoxygenation

Cited by 99 publications

References 45 publications

Molybdenum Nitrides, Carbides and Phosphides as Highly Efficient Catalysts for the (hydro)Deoxygenation Reaction

Molybdenum Nitrides, Carbides and Phosphides as Highly Efficient Catalysts for the (hydro)Deoxygenation Reaction

The Catalytic Reduction of Carboxylic Acid Derivatives and CO2 by Metal Nanoparticles on Lewis‐Acidic Supports

High Functionality Bio-Polyols from Tall Oil and Rigid Polyurethane Foams Formulated Solely Using Bio-Polyols

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Product

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The Catalytic Reduction of Carboxylic Acid Derivatives and CO₂ by Metal Nanoparticles on Lewis‐Acidic Supports