Heterogeneous Catalysts for Converting Renewable Feedstocks to Fuels and Chemicals

Wilson, Karen; Lee, Adam F.; Dacquin, Jean‐Philippe

doi:10.1007/978-1-4614-0344-9_7

Cited by 8 publications

(5 citation statements)

References 206 publications

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“…( 9)-( 10)). Another possible pathway of forming cyclopentanone could be cyclo-ketonization of the adipic acid resulting from the catalytic reduction of levoglucosan and other anhydrosugars [50,51]. It should be pointed out that this reaction is promoted by the presence of Ca(OH)2.…”

Section: Reaction Pathways In Raw Bio-oil Upgradingmentioning

confidence: 99%

Cost-effective upgrading of biomass pyrolysis oil using activated dolomite as a basic catalyst

Valle

García-Gómez

Remiro

et al. 2019

Fuel Processing Technology

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This study deals with a continuous process on a calcined dolomite operating at atmospheric pressure and by co-feeding water for cost-effective upgrading of raw bio-oil at 400 ºC and 500 ºC. The distribution of carbon in the feed to the product fractions (gas and upgraded bio-oil) and to the dolomite (as CO2 captured and coke) was investigated with time on stream, as well as the evolution of the gas and the upgraded bio-oil composition. Acids and high-molecular weight phenols were completely removed from the raw bio-oil for 0.5 h time on stream, with the upgraded bio-oil being mainly composed of ketones (acetone, 2-butanone and cyclopentanones). Chromatographic analyses of the reaction products were combined with analysis of the dolomite characteristics by thermogravimetry and X-ray diffraction. The results are explained on the basis of possible reaction mechanisms on the dolomite basic sites (CaO, Ca(OH)2 and MgO) and the extent of dolomite carbonation with adsorbed CO2. The composition of the upgraded bio-oil is suitable for subsequent catalytic valorization for obtaining fuels and chemicals, and in particular for the production of hydrogen by steam reforming.

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Section: Reaction Pathways In Raw Bio-oil Upgradingmentioning

confidence: 99%

Cost-effective upgrading of biomass pyrolysis oil using activated dolomite as a basic catalyst

Valle

García-Gómez

Remiro

et al. 2019

Fuel Processing Technology

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“…In these processes nickel is used at a large scale because of its high activity and relatively low cost compared to precious metals. However, Ni catalysts can deactivate severely as a result of the deposition of carbon [19,[23][24][25], which requires oxidative regeneration at high temperatures [26]. Despite the advantages in terms of catalyst redox stability induced by the reversible segregation of Ni from LFNO perovskite-type catalysts, the major drawback of this approach is probably the difficulty to obtain complete Ni reduction and segregation from the bulk PMO.…”

Section: Introductionmentioning

confidence: 99%

Increased nickel exsolution from LaFe0.8Ni0.2O3 perovskite-derived CO2 methanation catalysts through strontium doping

Steiger

Kröcher

Ferri

2020

Applied Catalysis A: General

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“…In this work, one such experiment has been performed on technologically and catalytically important mesoporous alumina (Al 2 O 3 ) . This thermally stable (800 °C) and high-surface-area material (typically 200–400 m 2 g –1 ) possessing ordered mesopores (Figure a) has a high concentration of research interest due to its catalytic significance in the production of biodiesel along with many other applications . Utilizing “green” and renewable fuels is forever becoming increasingly important, and understanding mesoporous alumina and its specific role in the catalysis of biodiesel production will lead to improved manufacturing methods and therefore increased system viability.…”

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confidence: 99%

Enhanced Solid-State NMR Correlation Spectroscopy of Quadrupolar Nuclei Using Dynamic Nuclear Polarization

et al. 2012

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By means of a true sensitivity enhancement for a solid-state NMR spectroscopy (SSNMR) experiment performed under dynamic nuclear polarization (DNP) conditions, corresponding to 4-5 orders of magnitude of time savings compared with a conventional SSNMR experiment, it is shown that it is possible to record interface-selective (27)Al-(27)Al two-dimensional dipolar correlation spectra on mesoporous alumina, an advanced material with potential industrial applications. The low efficiency of cross-polarization and dipolar recoupling for quadrupolar nuclei is completely negated using this technique. The important presence of pentacoordinated Al has not only been observed, but its role in bridging interfacial tetra- and hexacoordinated Al has been determined. Such structural information, collected at low temperature (∼103 K) and 9.4 T with the use of DNP, would have been impossible to obtain under standard conditions, even using a higher magnetic field. However, here it is demonstrated that this information can be obtained in only 4 h. This work clearly opens a new avenue for the application of SSNMR to quadrupolar nuclei and notably the atomic-scale structure determination of catalysis materials such as mesoporous alumina.

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Heterogeneous Catalysts for Converting Renewable Feedstocks to Fuels and Chemicals

Cited by 8 publications

References 206 publications

Cost-effective upgrading of biomass pyrolysis oil using activated dolomite as a basic catalyst

Cost-effective upgrading of biomass pyrolysis oil using activated dolomite as a basic catalyst

Increased nickel exsolution from LaFe0.8Ni0.2O3 perovskite-derived CO2 methanation catalysts through strontium doping

Enhanced Solid-State NMR Correlation Spectroscopy of Quadrupolar Nuclei Using Dynamic Nuclear Polarization

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