Activity and selectivity of Pt−Fe/C alloys for the liquid phase hydrogenation of cinnamaldehyde to cinnamyl alcohol

Goupil, D.; Fouilloux, P.; Maurel, R.

doi:10.1007/bf02062155

Cited by 92 publications

(26 citation statements)

References 5 publications

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“…In this appendix Eqns (3) and (13) are derived. They permit the analytical calculation of the segregation equilibrium using the simple pairwise bond scheme with constant bond energies.…”

Section: Appendixmentioning

confidence: 99%

Platinum Segregation to the (111) Surface of Ordered Pt80Fe20: LEIS Results and Model Simulations

Creemers

Deurinck

1997

Surf. Interface Anal.

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Low‐energy ion scattering (LEIS) was used to study the surface composition of a Pt80Fe20(111) alloy surface as a function of temperature. From 700 K onwards, high enough for sufficient atomic mobility to attain equilibrium, the surface consists of nearly pure Pt. These results agree completely with the results from LEED I/V analysis by Beccat et al. [Surf. Sci. 238, 105 (1990)], who also evidenced a monotonic concentration profile over the three top layers, slight relaxations between those layers and a (2×2) superstructure caused by an ordered atomic arrangement in the second layer. Simple expressions for the entropy changes upon segregation in ordered alloys combined with constant pairwise bond energies clearly appear to be inadequate to describe the observed experimental facts. Even when combined with Monte Carlo simulations, the constant bond energies fail to correctly reproduce the results. Only when the Monte Carlo method is combined with the more refined (modified) embedded atom method (MEAM) for energy description of an alloy is satisfactory agreement with experiment obtained. © 1997 by John Wiley & Sons, Ltd.

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“…In this appendix Eqns (3) and (13) are derived. They permit the analytical calculation of the segregation equilibrium using the simple pairwise bond scheme with constant bond energies.…”

Section: Appendixmentioning

confidence: 99%

Platinum Segregation to the (111) Surface of Ordered Pt80Fe20: LEIS Results and Model Simulations

Creemers

Deurinck

1997

Surf. Interface Anal.

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“…The formation of diacetals is observed when pure alcohol is used as solvent during the hydrogenation of a)b ethylenic aldehydes [16,25]. This reaction does not occur when a little water is present [26]. Catalytic activities can also be improved in the presence of NaOH [27,28].…”

Section: Resultsmentioning

confidence: 98%

Selective Hydrogenation of Cinnamaldehyde over Pt/ZrO2 Catalyst Modified by Cr, Mn, Fe, Co and Ni

et al. 2006

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Hydrogenation properties of cinnamaldehyde (CMA) have been studied over Pt/ZrO 2 and PtM/ZrO 2 catalysts (M = Cr, Mn, Fe, Co and Ni) in ethanol at 343 K and 2.0 MPa. The effect of different content of Ni and base has also been investigated over PtNi/ZrO 2 catalyst. With introduction of transition metals to Pt/ZrO 2 catalyst shows a significant influence on the catalytic properties. PtCo/ZrO 2 catalysts show the best yield of cinnamyl alcohol (CMO), and PtNi/ZrO 2 catalyst shows good yield of hydrocinnamaldehyde (HCMA). In the presence of base solution, rate of the hydrogenation of CMA over PtNi/ZrO 2 (0.4 wt%) catalyst increases significantly and side reaction is remarkably inhibited. More bare metal atoms situated remote from the interface region on PtNi/ZrO 2 catalyst surface are the reason of good selectivity of HCMA for PtNi/ZrO 2 catalyst.

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“…Due to its good acid‐base stability, large specific surface area, and abundant pore structure, carbon materials are often used as supports for supported noble metal catalysts, especially in Pt/C catalysts. The selectivity to cinnamyl alcohol over some carbon supported platinum‐based catalysts is not higher than 50 %, such as, for example, acetylene black (S col = 27 %), AC (S col = 30 %), mesoporous AC (S col = 33 %), expanded graphite (S col = 45 %) . Moreover, new types of carbon‐based porous materials supported platinum‐based catalysts have a higher selectivity to cinnamyl alcohol, up to 91.1 %, such as carbonized aerosols (S col = 53 %), CNTs (S col = 64 %), graphite (S col = 72 %), rice husk mesoporous carbon (S col = 88 %), graphene oxide (S col = 88 %), and three‐dimensional layered porous carbon (S col = 91.1 %) .…”

Section: Introductionmentioning

confidence: 99%

“…The above research work mainly focuses on modification of activated carbon with HCl, HNO 3 , H 2 O 2 , or NaClO in order to improve the catalytic performance; however, base‐treatment is also a novel and favourable way to modify activated carbon. The treatment of NaOH significantly changes the chemical properties of carbon, such as surface groups and total acidity capacity.…”

Section: Introductionmentioning

confidence: 99%

Precious metal nanoparticles supported on KOH pretreated activated carbon under microwave radiation as a catalyst for selective hydrogenation of cinnamaldehyde

et al. 2019

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A series of precious metals (Pd, Pt, Ru, Rh, and Au) supported on commercial activated carbon (AC) catalysts were prepared and their catalytic performance in the selective hydrogenation of cinnamaldehyde (CAL) were evaluated. Among these catalysts, Pt supported on AC pretreated by 10 % KOH under microwave radiation has the highest catalytic activity and selectivity in the selective hydrogenation of CAL, which provided a selectivity to cinnamyl alcohol of 73.4 % with a conversion of CAL of 62.8 %. The structure and morphology of the AC and the precious metal supported catalysts were characterized by BET, FT‐IR, XPS, XRD, and TEM. The catalytic performances of various precious metals as active components were compared. The effects of reaction temperature, hydrogen pressure, and reaction time on the catalytic hydrogenation of CAL were investigated. The by‐products were analyzed by GC‐MS and their formation mechanism was proposed. This work provides an efficient method of using commercial AC as the support for preparing promising catalysts in the selective hydrogenation of CAL.

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Activity and selectivity of Pt−Fe/C alloys for the liquid phase hydrogenation of cinnamaldehyde to cinnamyl alcohol

Cited by 92 publications

References 5 publications

Platinum Segregation to the (111) Surface of Ordered Pt80Fe20: LEIS Results and Model Simulations

Platinum Segregation to the (111) Surface of Ordered Pt80Fe20: LEIS Results and Model Simulations

Selective Hydrogenation of Cinnamaldehyde over Pt/ZrO2 Catalyst Modified by Cr, Mn, Fe, Co and Ni

Precious metal nanoparticles supported on KOH pretreated activated carbon under microwave radiation as a catalyst for selective hydrogenation of cinnamaldehyde

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