Liquid Phase Hydrogenation of Benzalacetophenone: Effect of Solvent, Catalyst Support, Catalytic Metal and Reaction Conditions

We report the development of palladium nanoparticles supported on Mo2C as an active catalyst for the liquid-phase hydrogenation of CO2 to formate under mild reaction conditions (100 °C and 2.0 MPa of a 1 : 1 CO2 : H2 mixture).

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29-P-13-Novel mesoporous carbon as a catalyst support for Pt and Pd for liquid phase hydrogenation reactions

Studies in Surface Science and Catalysis - Zeolites and Mesoporous Materials at the dawn of the 21st century, Proceedings of the 13th International Zeolite Conference, ◽

10.1016/s0167-2991(01)81708-0 ◽

2001 ◽

pp. 313 ◽

Cited By ~ 17

Author(s):

W.S. Ahn ◽

K.I. Min ◽

Y.M. Chung ◽

H.-K. Rhee ◽

S.H. Joo ◽

...

Keyword(s):

Liquid Phase ◽

Mesoporous Carbon ◽

Catalyst Support ◽

Liquid Phase Hydrogenation ◽

Hydrogenation Reactions

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Granulated Carbon Nanotubes as the Catalyst Support for Pt for the Hydrogenation of Nitrobenzene

Australian Journal of Chemistry ◽

10.1071/ch09162 ◽

2010 ◽

Vol 63 (1) ◽

pp. 131 ◽

Cited By ~ 10

Author(s):

Shao Jin ◽

Weizhong Qian ◽

Yi Liu ◽

Fei Wei ◽

Dezeng Wang ◽

...

Keyword(s):

Carbon Nanotubes ◽

Mass Transfer ◽

Catalytic Activity ◽

Activated Carbon ◽

Liquid Phase ◽

Transfer Rate ◽

High Selectivity ◽

Mass Transfer Rate ◽

Catalyst Support ◽

Liquid Phase Hydrogenation

Granulated Pt/carbon nanotubes (CNTs) were found to have a much better catalytic activity in the liquid phase hydrogenation of nitrobenzene than Pt/activated carbon (AC). The granulated CNTs had much larger pores than the AC particles, which gave a faster mass transfer rate of H2 that helped produce aniline with high selectivity.

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Hydrogenation of maleic acid on nickel-magnesium oxide mixed catalysts and the isotope effect of solvent

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19812043 ◽

1981 ◽

Vol 46 (9) ◽

pp. 2043-2051 ◽

Cited By ~ 1

Author(s):

Rostislav Kudláček ◽

Jana Rexová

Keyword(s):

Reaction Mechanism ◽

Liquid Phase ◽

Magnesium Oxide ◽

Isotope Effect ◽

Maleic Acid ◽

Solid Phase ◽

Light Water ◽

Effect Of Solvent ◽

Liquid Phase Hydrogenation ◽

Mixed Catalyst

The activity of nickel-magnesium oxide mixed catalyst in liquid phase hydrogenation was investigated in dependence on the composition of the solid phase and on the preparation procedure. The isotope effect of substitution of light water by heavy water, the kinetic dependences, and the sorbed amount of the reacting maleic acid were examined with a view to deducing the reaction mechanism.

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Selective Liquid Phase Hydrogenation of Benzaldehyde to Benzyl Alcohol Over Alumina Supported Gold

Catalysis Letters ◽

10.1007/s10562-019-02944-y ◽

2019 ◽

Vol 150 (3) ◽

pp. 881-887

Author(s):

Yufen Hao ◽

Chiara Pischetola ◽

Fernando Cárdenas-Lizana ◽

Mark A. Keane

Keyword(s):

Liquid Phase ◽

Benzyl Alcohol ◽

Reaction Conditions ◽

Liquid Phase Hydrogenation ◽

Alcohol Water ◽

Reaction Constant ◽

Supported Gold ◽

First Time ◽

Nucleophilic Mechanism ◽

By Products

Abstract We report for the first time 100% benzyl alcohol yield from the liquid phase (T = 353 K, P = 9 bar) hydrogenation of benzaldehyde over Au/Al2O3. Under the same reaction conditions, a benchmark Pt/Al2O3 catalyst promoted the formation of toluene and benzene as hydrogenolysis by-products. Reaction kinetics was subjected to a Hammett treatment and the reaction constant (ρ = 0.9) was found to be consistent with a nucleophilic mechanism. A solvent (alcohol, water and alcohol + water) effect is demonstrated and ascribed to competitive adsorption where solvation by polar (water) facilitates benzaldehyde activation. Graphic Abstract

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Reaction Pathways and the Role of Solvent in the Hydrogenation of Chloronitrobenzenes

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc20031819 ◽

2003 ◽

Vol 68 (10) ◽

pp. 1819-1832 ◽

Cited By ~ 6

Author(s):

Vieroslav Krátky ◽

Milan Králik ◽

Alexander Kaszonyi ◽

Magdaléna Stolcová ◽

Lubomír Zalibera ◽

...

Keyword(s):

Liquid Phase ◽

Benzene Ring ◽

Catalyst Activity ◽

Reaction Pathways ◽

Reaction Conditions ◽

Liquid Phase Hydrogenation ◽

Role Of Solvent ◽

Hplc Analyses ◽

C Nmr

Liquid phase hydrogenation of chloronitrobenzenes to corresponding chloroanilines over Pd on carbon (Pd/C) under mild reaction conditions was studied. On the basis of 1H, 13C NMR, GC-MS and HPLC analyses of reaction mixtures, the reaction pathways were evaluated. The reduction of substrates proceeds via the formation of chloronitrosobenzenes and N-(chlorophenyl)hydroxylamines and mainly results in the formation of the chloroanilines and aniline. Aniline is formed by hydrogenolysis of chlorine (dechlorination) in benzene ring. Other compounds (mono- and disubstituted azobenzenes and azoxybenzenes) were also detected by GS-MS and HPLC (<3 mole %). The used solvent influences the reaction mixture composition and catalyst activity.

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