High halogenated nitrobenzene hydrogenation selectivity over nano Ir particles

Hydrogenation of olefinic substrates in binary and ternary mixtures using 5% Pt on silica gel as the catalyst was studied in normal conditions in the liquid phase with methanol or cyclohexane or in solvent-free systems. The effect of the solvent concentration on the selectivity of hydrogenation of the unsaturated alcohol-olefin binary mixtures was investigated. In ternary systems of unsaturated substrates, the effect of each of the substrates on the selectivity of hydrogenation of the remaining two substances was examined. Another system was found in which a jump change of the hydrogenation selectivity occurred on the vanishing of the fastest reacting substance.

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Selectivity of the Lindlar catalyst in alkyne semi-hydrogenation: a direct liquid-phase adsorption study

Catalysis Science & Technology ◽

10.1039/d1cy01016f ◽

2021 ◽

Author(s):

Nikolay Cherkasov ◽

Dmitry Murzin ◽

C. Richard A. Catlow ◽

Arunabhiram Chutia

Keyword(s):

Liquid Phase ◽

Adsorption Study ◽

Liquid Phase Adsorption ◽

Lindlar Catalyst ◽

Hydrogenation Selectivity

We study the alkyne semi-hydrogenation selectivity over Pd and Lindlar catalyst with liquid-phase adsorption. The results indicate that there are strongly-adsorbing alkyne and alkene sites; alkenes react non-selectively over the...

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Understanding Ligand‐Directed Heterogeneous Catalysis: When the Dynamically Changing Nature of the Ligand Layer Controls the Hydrogenation Selectivity

Angewandte Chemie International Edition ◽

10.1002/anie.202103960 ◽

2021 ◽

Author(s):

Swetlana Schauermann ◽

Carsten Schröder ◽

Marvin C. Schmidt ◽

Philipp A. Haugg ◽

Ann-Katrin Baumann ◽

...

Keyword(s):

Heterogeneous Catalysis ◽

Hydrogenation Selectivity

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Trace iron impurities deactivate palladium supported on nitrogen-doped carbon nanotubes for nitrobenzene hydrogenation

Applied Catalysis A General ◽

10.1016/j.apcata.2017.07.035 ◽

2017 ◽

Vol 545 ◽

pp. 54-63 ◽

Cited By ~ 16

Author(s):

Baoqiang Dong ◽

Yuhang Li ◽

Xiaomei Ning ◽

Hongjuan Wang ◽

Hao Yu ◽

...

Keyword(s):

Carbon Nanotubes ◽

Nitrogen Doped ◽

Nitrobenzene Hydrogenation ◽

Nitrogen Doped Carbon

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Well-dispersed bimetallic nanoparticles confined in mesoporous metal oxides and their optimized catalytic activity for nitrobenzene hydrogenation

Catalysis Science & Technology ◽

10.1039/c3cy00689a ◽

2014 ◽

Vol 4 (2) ◽

pp. 441-446 ◽

Cited By ~ 48

Author(s):

Juanjuan Liu ◽

Shihui Zou ◽

Liping Xiao ◽

Jie Fan

Keyword(s):

Catalytic Activity ◽

Metal Oxides ◽

Bimetallic Nanoparticles ◽

Nitrobenzene Hydrogenation ◽

Mesoporous Metal Oxides ◽

Mesoporous Metal

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Catalytic functionalities of Pd catalysts supported on spinel MgAl2O4 for coupling of ethylbenzene dehydrogenation with nitrobenzene hydrogenation

Applied Petrochemical Research ◽

10.1007/s13203-014-0090-x ◽

2014 ◽

Vol 5 (1) ◽

pp. 71-80 ◽

Cited By ~ 3

Author(s):

Yengaldas Harikrishna ◽

Vanama Pavan Kumar ◽

Kuna Ramu ◽

Komandur V. R. Chary ◽

Vattikonda Venkat Rao

Keyword(s):

Pd Catalysts ◽

Ethylbenzene Dehydrogenation ◽

Nitrobenzene Hydrogenation ◽

Spinel Mgal2o4

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CFD Simulation and Optimization of Gas-Solid Phase Temperature of Isothermal Acetylene Hydrogenation Reactor

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2017-0220 ◽

2018 ◽

Vol 16 (5) ◽

Author(s):

Guihua Hu ◽

Zhencheng Ye ◽

Wenli Du ◽

Feng Qian

Keyword(s):

Porous Medium ◽

Solid Phase ◽

Inlet Temperature ◽

Acetylene Hydrogenation ◽

Simulation And Optimization ◽

Medium Model ◽

Hydrogenation Reactor ◽

Porous Medium Model ◽

Two Temperature ◽

Hydrogenation Selectivity

Abstract Gas-solid coupled heat transfer in an industrial isothermal acetylene hydrogenation reactor was carried out using computational fluid dynamics (CFD). A two-temperature porous medium model was established by adding source terms to energy equations of the solid and gas phases. The combination of a genetic algorithm with CFD methods is applied to optimization of the kinetic and process parameters of the reaction. The model was validated by comparing the simulated results with those obtained from a one-temperature porous medium model, a two-temperature porous medium model, and industrial data. The optimal hydrogen-to-acetylene ratio and inlet temperature are 1.78 and 326K, respectively. The optimized ethylene yield increase and hydrogenation selectivity are 0.53 % and 0.18 % higher than the values before optimization, respectively. Finally, the effects of the hydrogen-to-acetylene ratio and inlet temperature on the increase in ethylene yield and hydrogenation selectivity are analyzed. Therefore, the hydrogen-to-acetylene ratio and inlet temperature should be reasonably controlled during production.

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