Kinetics of vapour phase oxidation of furfural on vanadium catalyst

Murthy, M.S.S.; Rajamani, K.

doi:10.1016/0009-2509(74)80071-0

Cited by 29 publications

(22 citation statements)

References 4 publications

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“…Furfural is one of the numerous oxygenated compounds commonly found in bio-oil [3,[11][12][13][14][15][16][17][18][19][20][21][22]. Due to their high reactivity, these compounds need to be catalytically hydrodeoxygenated to improve bio-oil storage stability, boiling point range, and water solubility [23].…”

Section: Introductionmentioning

confidence: 99%

Hydrodeoxygenation of Furfural Over Supported Metal Catalysts: A Comparative Study of Cu, Pd and Ni

2011

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The hydrodeoxygenation of furfural has been investigated over three different metal catalysts, Cu, Pd and Ni supported on SiO 2 , on a continuous-flow reactor under atmospheric pressure of hydrogen in the 210-290°C temperature range. The distribution of products is a strong function of the metal catalyst used. High selectivity to furfuryl alcohol is obtained over Cu/SiO 2 , with the formation of only small amounts of 2-methyl furan at the highest reaction temperature studied. In contrast to Cu catalyst, the conversion of furfural over Pd/SiO 2 mainly produces furan by decarbonylation. Furan can further react with hydrogen to form tetrahydrofuran (THF). Finally, on Ni/SiO 2 catalysts ring opening products (butanal, butanol and butane) can be obtained in significant amounts. The different product distributions are explained in terms of the strength of interaction of the furan ring with the metal surface and the type of surface intermediates that each metal is able to stabilize.

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Section: Introductionmentioning

confidence: 99%

Hydrodeoxygenation of Furfural Over Supported Metal Catalysts: A Comparative Study of Cu, Pd and Ni

2011

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“…7 Gas-phase oxidation of furfural to maleic anhydride is a wellknown route, and yields up to 75% can be achieved by using vanadium-oxide-based catalysts; cheap air O 2 is used as an oxidising agent. [8][9][10][11][12] However, dilute furfural streams (below 1% v/v) are required to achieve high MAN selectivity. The reaction is conducted at high temperatures (higher than 523 K), and the vaporisation of furfural is required.…”

Section: Introductionmentioning

confidence: 99%

Aqueous-phase catalytic oxidation of furfural with H₂O₂: high yield of maleic acid by using titanium silicalite-1

et al. 2014

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This investigation explores the selective liquid-phase oxidation of furfural to maleic acid (MA) using hydrogen peroxide as an oxidant and titanium silicalite (TS-1) as a catalyst. The effect of temperature and of the concentration of H 2 O 2 , furfural and catalyst on the MA yield was studied. The highest yield, 78 mol%, was obtained under the following reaction conditions: 4.6 wt% of furfural, 4.6 wt% of catalyst, a H 2 O 2 /furfural mol ratio of 7.5, corresponding to 12.3 wt% of H 2 O 2 , 323 K and 24 hours of reaction. To reduce the amount of H 2 O 2 employed, a two-step sequence of reactions was conducted using TS-1 and Amberlyst 70 consecutively as catalysts in the first and second steps, respectively. In this case, a H 2 O 2 / furfural mol ratio ¼ 4.4 was required, which is quite close to the stoichiometric ratio (3.0), and a maleic acid yield close to 80% was obtained under 4.6 wt% of furfural, 4.6 wt% of catalyst and 28 h of reaction at 323 K; after 52 h of reaction, the MA yield reached 92%. Fresh and used catalysts were characterised by X-ray diffraction (XRD), Raman spectroscopy, total reflection X-ray fluorescence (TXRF), X-ray photoelectron spectroscopy (XPS), N 2 adsorption-desorption isotherms and thermogravimetric analysis.Ti was largely incorporated within the silicalite framework, but the presence of some TiO 2 anatase was also confirmed. Ti leaching was observed, especially during the first run but became much less important in successive cycles. Leaching affects both anatase and Ti species within the silicalite framework. Notwithstanding the leaching, when using pure furfural, TS-1 could be reused for six runs without noticeable deactivation, whereas when using furfural directly derived from biomass, weak but visible deactivation occurred upon reutilisation; this deterioration must be related to the presence of some organic products other than furfural.

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“…The re-oxidation of the catalyst was found to be the rate-determining step in the investigated temperature range. Moreover, the order of the reaction was found to be one with respect to furfural and oxygen partial pressures [45].…”

Section: Methodsmentioning

confidence: 93%

Recent developments in maleic acid synthesis from bio-based chemicals

Wojcieszak

Santarelli

Paul

et al. 2015

Sustain Chem Process

143

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This review paper presents the current state of the art on maleic acid synthesis from biomass-derived chemicals over homogeneous or heterogeneous catalysts. It is based on the most recent publications on the topic, which are discussed in details with respect to the observed catalytic performances. The recent developments and the technical drawbacks in the gas and the liquid phases are also reported. In addition, recent results on the mechanistic aspect are discussed giving insights into the probable reaction mechanisms depending on the starting molecule (furan, furfural and 5-hydroxymethylfurfural). Graphical abstract:

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Kinetics of vapour phase oxidation of furfural on vanadium catalyst

Cited by 29 publications

References 4 publications

Hydrodeoxygenation of Furfural Over Supported Metal Catalysts: A Comparative Study of Cu, Pd and Ni

Hydrodeoxygenation of Furfural Over Supported Metal Catalysts: A Comparative Study of Cu, Pd and Ni

Aqueous-phase catalytic oxidation of furfural with H₂O₂: high yield of maleic acid by using titanium silicalite-1

Recent developments in maleic acid synthesis from bio-based chemicals

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Kinetics of vapour phase oxidation of furfural on vanadium catalyst

Cited by 29 publications

References 4 publications

Hydrodeoxygenation of Furfural Over Supported Metal Catalysts: A Comparative Study of Cu, Pd and Ni

Hydrodeoxygenation of Furfural Over Supported Metal Catalysts: A Comparative Study of Cu, Pd and Ni

Aqueous-phase catalytic oxidation of furfural with H2O2: high yield of maleic acid by using titanium silicalite-1

Recent developments in maleic acid synthesis from bio-based chemicals

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Aqueous-phase catalytic oxidation of furfural with H₂O₂: high yield of maleic acid by using titanium silicalite-1