Selective hydrogenation on copper chromite catalysts IV. Hydrogenation selectivity for α, β-unsaturated aldehydes and ketones

Hubaut, R.; Daage, M.; Bonnelle, J.P.

doi:10.1016/s0166-9834(00)82632-9

Cited by 69 publications

(21 citation statements)

References 7 publications

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“…The main metals are mostly typical noble-metal catalyst components (Au, Ir, Pd, Pt, Rh, Ru), but Ni is also included as a typical general purpose hydrogenation catalyst. Cu is included since it is commonly used in the gas phase hydrogenation of furfural to furfuryl alcohol [13,14]. Most of the main metals used in our work were used before in the hydrogenation of (unsaturated) aldehydes with varying degrees of success.…”

Section: Effect Of Main Metals and Promotersmentioning

confidence: 99%

Understanding Catalytic Biomass Conversion Through Data Mining

2010

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Catalytic conversion of biomass is a key challenge that we chemists face in the twenty-first century. Worldwide, research is conducted into obtaining bulk chemicals, polymers and fuels. Our project centres on glucose valorisation via furfural derivatives using catalytic hydrogenation. We present here new results for a set of 48 bimetallic catalysts supported on silica, and demonstrate the application of data mining tools to identify major trends in the data. These results are combined with a full factorial data set for the hydrogenation of 5-ethoxymethylfurfural over alumina-supported transition metal catalysts. All the catalysts in the combined datasets were synthesized and tested for performance under identical conditions. This, combined with the fact that no combinations of metals were left out, enables the use of advanced data mining tools. The paper describes the data and highlights the relevant trends from a chemist's viewpoint.

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Section: Effect Of Main Metals and Promotersmentioning

confidence: 99%

Understanding Catalytic Biomass Conversion Through Data Mining

2010

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Section: Introductionmentioning

confidence: 99%

“…It was found that nickel, platinum and copper based catalysts [6][7][8] or metal oxides [9] preferentially hydrogenate the carbonyl group. For aromatic compounds, the benzene ring and the carbonyl group should be hydrogenated but hydrogenolysis should also compete [6][7][8]. The observed performances were correlated to new active sites created in the metal-support interfacial region for metal supported catalysts [7] and to both reducibility and surface acid-base properties for bulk metal oxide catalysts [9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of activated carbon-supported copper or nickel and their catalytic behavior towards benzaldehyde hydrogenation

Merabti

Bachari

Halliche

et al. 2010

Reac Kinet Mech Cat

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Activated carbon-supported Ni and Cu catalysts were prepared by the conventional wetness impregnation method, and their catalytic activity for benzaldehyde hydrogenation/hydrogenolysis was tested at atmospheric pressure in the temperature range of 100-250°C. Benzyl alcohol, toluene and methylcyclohexane were obtained through consecutive hydrogenation/hydrogenolysis reactions while benzene was formed by a parallel hydrogenolysis reaction. The obtained yields depended on the nature of the metal active phase and reaction conditions. The catalysts were characterized by ICP, BET, TEM and XRD techniques and their reducibilities were determined by hydrogen chemisorption. The factors governing the catalytic performances are discussed.

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“…The selective hydrogenation of a molecule containing both C=C and C=O bonds possesses commercial importance and has been investigated intensively [1][2][3][4][5]. However, the other interesting aspect of competitive hydrogenation between phenyl and carbonyl groups within a molecule has not been significantly discussed in previous publications so far.…”

Section: Introductionmentioning

confidence: 99%

Controlled Hydrogenation of Acetophenone Over Pt/CeO2–MO x (M = Si, Ti, Al, and Zr) Catalysts

2009

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Vapour phase selective hydrogenation of acetophenone has been performed over a series of Pt/CeO 2 -MO x (MO x = SiO 2 , Al 2 O 3 , TiO 2 , and ZrO 2 ) catalysts. The controlled hydrogenation was carried out in the 453-533 K temperature range at normal atmospheric pressure. The ceria-based mixed oxides were prepared through a co-precipitation or deposition-precipitation route. Platinum was deposited by a wet impregnation method. The obtained catalysts were calcined at 773 K and characterized by means of X-ray diffraction, Raman spectroscopy, BET surface area, temperature programmed reduction, temperature programmed desorption, thermogravimetry, and scanning electron microscopy. XRD analyses suggest that CeO 2 -SiO 2 and CeO 2 -Al 2 O 3 primarily consist of CeO 2 nanoparticles dispersed over the amorphous silica or alumina surface. In the case of CeO 2 -TiO 2 , presence of segregated nanocrystalline CeO 2 and TiO 2 -anatase phase were noted. Formation of cubic Ce 0.75 Zr 0.25 O 2 solid solution was observed in the case of CeO 2 -ZrO 2 . No peaks pertaining to platinum could be detected from XRD profiles. Formation of zirconia rich tetragonal phase (Ce 0.4 Zr 0.6 O 2 ) was observed in the case of Pt/CeO 2 -ZrO 2 sample. Raman measurements revealed the fluorite structure of ceria and presence of oxygen vacancies in all samples. TPR results suggest that the presence of Pt facilitates the reduction of ceria. The catalytic performance of Pt-based catalysts was found to depend strongly on the nature of the support oxide employed. Among various catalysts investigated, the Pt/CeO 2 -SiO 2 catalyst exhibited better product yields.

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Selective hydrogenation on copper chromite catalysts IV. Hydrogenation selectivity for α, β-unsaturated aldehydes and ketones

Cited by 69 publications

References 7 publications

Understanding Catalytic Biomass Conversion Through Data Mining

Understanding Catalytic Biomass Conversion Through Data Mining

Synthesis and characterization of activated carbon-supported copper or nickel and their catalytic behavior towards benzaldehyde hydrogenation

Controlled Hydrogenation of Acetophenone Over Pt/CeO2–MO x (M = Si, Ti, Al, and Zr) Catalysts

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