Single-atom silver-manganese nanocatalysts based on atom-economy design for reaction temperature-controlled selective hydrogenation of bioresources-derivable diethyl oxalate to ethyl glycolate and acetaldehyde diethyl acetal

To obtain a catalyst based on a non-precious metal that can replace traditional palladium-based selective catalysts of acetylene hydrogenation, the catalytic performances of two different configurations of a B12N12 cluster doped with a single nickel atom were studied by a density functional theory computational approach. After analysing the effect that the adsorption of reactants onto the clusters has on the reaction path, we determined the lowest energy path for the acetylene double hydrogenation. Comparing the acetylene hydrogenation activities and ethylene product selectivities of the B11N12Ni and B12N11Ni clusters, which have different doping sites, we determined the activities of these two catalysts to be similar to each other; however, the B11N12Ni cluster was calculated to have higher selectivity for ethylene as a product. This difference may be related to the moderate adsorption of hydrogen and acetylene on the B11N12Ni cluster. As a new type of nickel-based single-atom catalyst, B11N12Ni clusters may have research value in the selective hydrogenation of acetylene.

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Selective Hydrogenation on a Highly Active Single-Atom Catalyst of Palladium Dispersed on Ceria Nanorods by Defect Engineering

ACS Applied Materials & Interfaces ◽

10.1021/acsami.0c17009 ◽

2020 ◽

Vol 12 (51) ◽

pp. 57569-57577

Author(s):

Zhijun Li ◽

Xiuli Dong ◽

Mingyang Zhang ◽

Leipeng Leng ◽

Wenxing Chen ◽

...

Keyword(s):

Selective Hydrogenation ◽

Single Atom ◽

Defect Engineering ◽

Highly Active

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Temperature-controlled hydrothermal synthesis of γ-MnOOH, Mn3O4 and MnCO3 on a carbon cloth for supercapacitor applications

CrystEngComm ◽

10.1039/c9ce01732a ◽

2020 ◽

Vol 22 (23) ◽

pp. 4014-4022

Author(s):

Shujuan Meng ◽

Qiong Su ◽

Ping Zhang ◽

Wanhong Sun ◽

Yanbin Wang

Keyword(s):

Hydrothermal Synthesis ◽

Hydrothermal Method ◽

Formation Mechanism ◽

Reaction Temperature ◽

Controlled Synthesis ◽

Carbon Cloth ◽

Temperature Controlled ◽

Supercapacitor Applications

In this study, a reaction temperature-controlled synthesis of γ-MnOOH, Mn3O4 and MnCO3 (and also their mixture) on carbon cloth via a hydrothermal method is investigated, and the formation mechanism is discussed.

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Ru-Catalyzed Arene Hydrogenation: A Highly Efficient and Selective Process for Preparing Trans-Trans Isomer of 4,4'-Diamino-Dicyclohexy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.393-395.1413 ◽

2011 ◽

Vol 393-395 ◽

pp. 1413-1416

Author(s):

Yu Xiang Wang ◽

Dan Dan Li ◽

Xing Huang ◽

Ya Juan Zhao

Keyword(s):

Reaction Time ◽

Trans Isomer ◽

Reaction Temperature ◽

Selective Hydrogenation ◽

Optimum Conditions ◽

Highly Efficient ◽

Arene Hydrogenation ◽

Selective Process

The selective hydrogenation of 4,4'-methylenedianiline(MDA) over Ru/γ-Al2O3 was investigated in the presence of diamine and base. Under the optimum conditions: the reaction temperature of 448K, H2 pressure of 1100 psig , and reaction time of 5h, the conversion of 4,4'-methylenedianiline was close to 100% and the selectivity to trans-trans isomer of 4,4'-diamino-dicyclohexy was less than 20%.

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Selective hydrogenation of amides to alcohols in water solvent over a heterogeneous CeO2-supported Ru catalyst

Chemical Communications ◽

10.1039/c8cc02697a ◽

2018 ◽

Vol 54 (54) ◽

pp. 7503-7506 ◽

Cited By ~ 11

Author(s):

Masazumi Tamura ◽

Susumu Ishikawa ◽

Mii Betchaku ◽

Yoshinao Nakagawa ◽

Keiichi Tomishige

Keyword(s):

Heterogeneous Catalyst ◽

Reaction Temperature ◽

Selective Hydrogenation ◽

Ru Catalyst ◽

Water Solvent ◽

Selective Dissociation ◽

Low Reaction Temperature

CeO2-supported Ru (Ru/CeO2) worked as an effective and reusable heterogeneous catalyst for the selective dissociation of the C–N bond in amides, particularly primary amides, with H2 in water solvent at low reaction temperature of 333 K.

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Supported Bimetallic AuPd Nanoparticles as Catalyst for the Solvent-Free Selective Hydrogenation of Nitroarenes

10.20944/preprints201808.0095.v1 ◽

2018 ◽

Author(s):

Ruiyang Qu ◽

Margherita Macino ◽

Sarwat Iqbal ◽

Xiang Gao ◽

Qian He ◽

...

Keyword(s):

Activation Energy ◽

Reaction Temperature ◽

Selective Hydrogenation ◽

Energy Input ◽

Solvent Free ◽

Impregnation Method ◽

Efficient Catalyst ◽

Effective Catalyst ◽

Chemoselective Hydrogenation ◽

Solvent Free Conditions

Selective hydrogenation of nitrobenzene was carried out under solvent-free conditions using supported AuPd nanoparticles catalyst, prepared by modified impregnation method (MIm), as efficient catalyst. >99% yield of aniline (AN) was obtained after 15 hours at 90 °C, 3 bar H2 that can be used without any further purification or separation, therefore reducing cost and energy input. Supported AuPd nanoparticles catalyst, prepared by MIm, was found to be active and stable even after 4 recycle experiments whereas the same catalyst prepared by SIm deactivated during the recycle experiments. The most effective catalyst was tested for the chemoselective hydrogenation of 4-chloronitrobenzene (CNB) to 4-chloroaniline (CAN). The activation energy of CNB to CAN was found to be 25 kJ mol-1, while that of CNB to AN was found to be 31 kJ mol-1. Based on this, the yield of CAN was maximized (92%) by lowering the reaction temperature to 25 °C.

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