Support effects in hydrogenation of cinnamaldehyde over carbon nanofiber-supported platinum catalysts: Kinetic modeling

Toebes, Marjolein L.; Nijhuis, T.A.; Hájek, Jan; Bitter, Johannes H.; Dillen, A.J. van; Murzin, Dmitry Yu.; Jong, Krijn P. de

doi:10.1016/j.ces.2005.05.031

Cited by 125 publications

(135 citation statements)

References 31 publications

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“…This open structure facilitates the diffusion of reactants and products by reducing steric hindrance. As regards their tuneable chemical nature, it is relatively easy to modify the surface chemistry of NC by, for instance, attaching oxygen surface groups that may have an impact not only on the active phase morphology but also on the catalyst activity [20][21][22]. The material thus constitutes a very promising support for use in various catalytic processes.…”

Section: Introductionmentioning

confidence: 99%

“…These include the hydrogenation of light alkenes [23][24][25][26][27], aldehydes [21,[28][29][30][31][32][33], polycyclic aromatic hydrocarbons [34], nitrobenzene [35], and cyclohexene [36]. They have also been used in alkene hydroformylation [37], vacuum residue hydroprocessing [38,39], ammonia and Fisher-Tropsch synthesis [40][41][42], cyclohexanol dehydrogenation [43], NO decomposition [44] and aniline oxidation [45,46].…”

Section: Introductionmentioning

confidence: 99%

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Bio-oil upgrading in supercritical water using Ni-Co catalysts supported on carbon nanofibres

Remón

Arauzo

García

et al. 2016

Fuel Processing Technology

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This work addresses the preparation, characterisation and screening of different Ni-Co catalysts supported on carbon nanofibres (CNFs) for use in the upgrading of bio-oil in supercritical water. The aim is to improve the physicochemical properties of bio-oil so that it can be used as a fuel. The CNFs were firstly oxidised in HNO 3 and afterwards subjected to a thermal treatment to selectively modify their surface chemistry prior to the incorporation of the metal active phase (Ni-Co). The CNFs and the supported catalysts were thoroughly characterised by several techniques, which allowed a relationship to be established between the catalyst properties and the upgrading results.The use of Ni-Co/CNFs for bio-oil upgrading in supercritical water (SCW) significantly improved the properties of the original feedstock. In addition, the thermal treatment to which the fibres were subjected exerted a significant influence on their catalyticproperties. An increase in the severity of the thermal treatment led to a substantial reduction in the oxygen content of the CNFs, mainly due to the removal of the less 2 stable oxygen surface groups, which allowed their surface polarity to decrease. This decrease resulted in less formation of solid products. However, it also reduced the H/C and increased the O/C ratios of the upgraded liquid. Therefore, a compromise between the yield and the properties of the upgraded bio-oil was achieved with a Ni-Co supported on a CNF with a moderate amount of oxygen surface groups.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bio-oil upgrading in supercritical water using Ni-Co catalysts supported on carbon nanofibres

Remón

Arauzo

García

et al. 2016

Fuel Processing Technology

View full text Add to dashboard Cite

show abstract

“…Extensive characterization using XPS and X-ray absorption studies did not reveal large differences of the electronic properties of the Pt particles upon thermal treatment [23]. The oxygen content of the support, however, strongly decreased with increasing pretreatment temperature as was apparent from both XPS and titration experiments.…”

Section: Platinum Catalysts For Hydrogenation Of Cinnamaldehydementioning

confidence: 89%

“…A tremendous increase of gross activity -up to a factor of 25 -of Pt/CNF with pretreatment temperature was apparent from the results shown. From a detailed kinetic and diffusion analysis [22] it has appeared that the intrinsic activity enhancement was even much larger as the most active catalysts suffered from diffusion limitation under the selected experimental conditions. Relative activity of Pt/CNF for hydrogenation of cinnamaldehyde as a function of the treatment temperature in nitrogen.…”

Section: Platinum Catalysts For Hydrogenation Of Cinnamaldehydementioning

confidence: 99%

Support Materials and Characterization Tools for Nanostructured Catalysts

Jong¹

2006

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Matériaux de support et outils de caractérisation des catalyseurs nanostructurés -Les matériaux de support nanostructurés considérés dans ce travail permettent de faciliter la recherche fondamentale en catalyse hétérogène. Des cas d'étude sont présentés, en particulier des catalyseurs d'hydrogénation à base de métaux supportés sur des nanofibres de carbone. La tomographie électronique s'avère être un outil de caractérisation important pour l'imagerie en trois dimensions de catalyseurs nanostructurés, avec une résolution nanométrique.Abstract -Support Materials and Characterization Tools for Nanostructured CatalystsNanostructured support materials are considered in this work as a means to facilitate fundamental research in heterogeneous catalysis. Case studies are presented, in particular carbon nanofiber supported metal catalysts for hydrogenation catalysis. Electron tomography is shown to be an important characterization tool to image nanostructured catalyst in three dimensions with nanometer resolution.Research Advances in Rational Design of Catalysts and Sorbents Avancées de la recherche dans la conception rationnelle de catalyseurs et d'adsorbants

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“…It is worth pointing out that apart from data-based methods, the reaction system, selective hydrogenation of CALD, has been studied using mechanistic (kinetic) models (Toebes et al, 2005;Vergunst et al, 2001), which can then be employed to aid catalyst optimization. The underlying physical/chemical basis of mechanistic models is clearly desired, and it usually results in better extrapolation capability.…”

Section: Introductionmentioning

confidence: 99%

Model-aided optimization and analysis of multi-component catalysts: Application to selective hydrogenation of cinnamaldehyde

Yan

Guo

Jia

et al. 2012

Chemical Engineering Science

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Support effects in hydrogenation of cinnamaldehyde over carbon nanofiber-supported platinum catalysts: Kinetic modeling

Cited by 125 publications

References 31 publications

Bio-oil upgrading in supercritical water using Ni-Co catalysts supported on carbon nanofibres

Bio-oil upgrading in supercritical water using Ni-Co catalysts supported on carbon nanofibres

Support Materials and Characterization Tools for Nanostructured Catalysts

Model-aided optimization and analysis of multi-component catalysts: Application to selective hydrogenation of cinnamaldehyde

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