scholarly journals High catalytic activity of Rh nanoparticles generated from cobaltocene and RhCl3 in aqueous solution

2019 ◽  
Vol 6 (10) ◽  
pp. 2704-2708 ◽  
Author(s):  
Wenjuan Wang ◽  
Roberto Ciganda ◽  
Changlong Wang ◽  
Ane Escobar ◽  
Angel M. Martinez-Villacorta ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Transfer Hydrogenation ◽  
High Catalytic Activity ◽  
Hydrolysis Of

Cobalticinium chloride-stabilized RhNPs are very efficient catalysts for hydrolysis of H3N-BH3, reduction of 4-NP, hydrogenation of benzene and transfer hydrogenation.

scholarly journals Transfer Hydrogenation Reactions of Photoactivatable N,N’-Chelated Ruthenium(II) Arene Complexes

2017 ◽  
Vol 57 (3) ◽  
Author(s):  
Soledad Betanzos-Lara ◽  
Abraha Habtemariam ◽  
Peter J. Sadler
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Sodium Formate ◽  
Transfer Hydrogenation ◽  
Arene Complexes ◽  
Chelating Ligand ◽  
Spontaneous Hydrolysis ◽  
Hydrogenation Reactions ◽  
Excess Sodium ◽  
Hydrolysis Of

We show that the reaction of Ru<sup>II</sup> arene chlorido complexes of the type [(η<sup>6</sup>-arene)Ru(N,N’)Cl]<sup>+</sup> arene = p-cymene (pcym), hexamethylbenzene (hmb), indane (ind), <em>N,N’</em> = bipyrimidine (bpm) and 1,10-phenanthroline (phen) with excess sodium formate generates a very stable formate adduct through spontaneous hydrolysis of the Ru-Cl bond at 310 K and pH* = 7.0. The formate adducts are also produced when Ru<sup>II</sup> arene pyridine complexes of the type [(η<sup>6</sup>-arene)Ru(N,N’)(Py)]<sup>2+</sup> (where Py = pyridine), are irradiated with UVA (λ<sub>irr</sub> = 300-400 nm) or visible light (λ<sub>irr</sub> = 400-660 nm) under the same conditions. The Ru<sup>II</sup> arene formato adducts do not catalyse the reduction of acetone through transfer hydrogenation. However, all the complexes (except complex <strong>2</strong> which contains phen as the chelating ligand) can catalyse the regioselective reduction of NAD<sup>+</sup> in the presence of formate (25 mol equiv) in aqueous solution to form 1,4-NADH. The catalytic activity is dependent on the nature of the chelating ligand. Most interestingly, the regioselective reduction of NAD+ to 1,4-NADH can be also specifically triggered by photoactivating a RuII arene Py complex.

Nitrogen-enriched porous carbon supported Pd-nanoparticles as an efficient catalyst for the transfer hydrogenation of alkenes

2018 ◽  
Vol 42 (20) ◽  
pp. 16823-16828 ◽  
Author(s):  
Jie Li ◽  
Xin Zhou ◽  
Ning-Zhao Shang ◽  
Cheng Feng ◽  
Shu-Tao Gao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Porous Carbon ◽  
Pd Nanoparticles ◽  
Transfer Hydrogenation ◽  
High Catalytic Activity ◽  
Efficient Catalyst ◽  
Supported Pd

Well-dispersed Pd nanoparticles supported on nitrogen-enriched porous carbon were prepared and this material displayed excellent catalytic activity for the transfer hydrogenation of alkenes. The Pd@NPC catalyst exhibited high catalytic activity and stability for the hydrogenation of alkenes.

PtAu alloy nanoparticles supported on thermally expanded graphene oxide as a catalyst for the selective oxidation of glycerol

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37112-37118 ◽  
Author(s):  
Gao-Yuan Yang ◽  
Shuai Shao ◽  
Yi-Hu Ke ◽  
Chun-Ling Liu ◽  
Hui-Fang Ren ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Selective Oxidation ◽  
High Catalytic Activity ◽  
Alloy Nanoparticles

Thermally expanded graphene oxide supported PtAu alloy nanoparticles showed high catalytic activity in the oxidation of glycerol in base-free aqueous solution.

Colloidal Co single-atom catalyst: a facile synthesis strategy and high catalytic activity for hydrogen generation

2020 ◽  
Vol 22 (4) ◽  
pp. 1269-1274 ◽  
Author(s):  
Junkai Wang ◽  
Zhenxia Huang ◽  
Lilin Lu ◽  
Quanli Jia ◽  
Liang Huang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Hydrogen Generation ◽  
Single Atom ◽  
High Catalytic Activity ◽  
Mixing Process ◽  
Facile Synthesis ◽  
On Demand ◽  
Synthesis Strategy ◽  
Facile Route

A facile route for on-demand hydrogen production via simply controlling the mixing process of a KBH4 solution and an aqueous solution of ISOBAM-104 stabilized Co2+ ions.

High catalytic activity of a bimetallic AgPd alloy supported on UiO-66 derived porous carbon for transfer hydrogenation of nitroarenes using formic acid-formate as the hydrogen source

2017 ◽  
Vol 41 (18) ◽  
pp. 9857-9865 ◽  
Author(s):  
Saisai Cheng ◽  
Ningzhao Shang ◽  
Xin Zhou ◽  
Cheng Feng ◽  
Shutao Gao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Formic Acid ◽  
Porous Carbon ◽  
Room Temperature ◽  
Transfer Hydrogenation ◽  
High Catalytic Activity

The Ag1Pd9@NPC-UiO-66 catalyst was fabricated and exhibited extraordinary catalytic activity toward the hydrogenation of nitroarenes to anilines at room temperature.

Synthesis of Ni/Au/Co trimetallic nanoparticles and their catalytic activity for hydrogen generation from alkaline sodium borohydride aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (43) ◽  
pp. 34364-34371 ◽  
Author(s):  
Chengpeng Jiao ◽  
Zili Huang ◽  
Xiaofeng Wang ◽  
Haijun Zhang ◽  
Lilin Lu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Sodium Borohydride ◽  
Hydrogen Generation ◽  
Co Nanoparticles ◽  
Hydrolysis Of ◽  
Positively Charged

Alloyed Ni/Au/Co nanoparticles with negatively-charged Au, Co atoms, and positively-charged Ni atoms were prepared as effective catalysts for hydrolysis of NaBH4.

In situ Synthesis of Reduced Graphene Oxide Supported CoMo Nanoparticles as Efficient Catalysts for Hydrogen Generation from NH3BH3

2018 ◽  
Vol 232 (3) ◽  
pp. 431-443 ◽  
Author(s):  
Xigang Du ◽  
Yonghua Duan ◽  
Jun Zhang ◽  
Gang Mi
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Hydrogen Generation ◽  
Sodium Molybdate ◽  
High Catalytic Activity ◽  
Ambient Conditions ◽  
Reduced Graphene

AbstractCoMo nanoparticles (NPs) supported on reduced graphene oxide (RGO) were synthesized by a one-stepin situco-reduction of an aqueous solution of cobalt(II) chloride, sodium molybdate dihydrate and graphene oxide (GO) using NaBH4as the sole reductant under ambient conditions. The powder XRD, FTIR, EDS and TEM were employed to characterize the structure, size and composition of the CoMo/RGO catalysts. The as-synthesized Co0.9Mo0.1/RGO catalysts exhibited high catalytic activity for the hydrolytic dehydrogenation of ammonia borane (AB) at room temperature. The as-synthesized Co0.9Mo0.1/RGO nanocatalysts exhibited much higher catalytic activity than Co/RGO, Mo/RGO and the RGO-free Co0.9Mo0.1counterpart. Moreover, kinetic studies indicate that the catalytic hydrolysis of AB by Co0.9Mo0.1/RGO has first order kinetics with respect to the the catalyst concentration, but zero order kinetics with respect to the substrate concentration. The Co0.9Mo0.1/RGO catalyst has a turnover frequency (TOF) of 15.8 mol H2·(mol·Co0.9Mo0.1/RGO)−1·min−1at 25°C. Furthermore, the Co0.9Mo0.1/RGO show good recyclability for hydrogen generation from an aqueous solution of AB, which enables the practical reuse of the catalysts. Hence, this general method can be easily extended to the facile preparation of other RGO-based metallic systems.

A stable and efficient 3D cobalt-graphene composite catalyst for the hydrolysis of ammonia borane

2016 ◽  
Vol 6 (19) ◽  
pp. 7186-7192 ◽  
Author(s):  
Mengxiong Li ◽  
Jiantong Hu ◽  
Hongbin Lu
Keyword(s):  
Catalytic Activity ◽  
Cobalt Catalyst ◽  
Ammonia Borane ◽  
Composite Catalyst ◽  
High Catalytic Activity ◽  
Graphene Composite ◽  
3D Composite ◽  
Hydrolysis Of

We synthesized a PEI decorated GO 3D composite supported cobalt catalyst that showed high catalytic activity and stability for the hydrolysis of AB.

scholarly journals Nanochannel-based heterometallic {ZnIIHoIII}–organic framework with high catalytic activity for the chemical fixation of CO2

RSC Advances ◽  
2021 ◽  
Vol 11 (16) ◽  
pp. 9731-9739
Author(s):  
Tao Zhang ◽  
Hongtai Chen ◽  
Hongxiao Lv ◽  
Qiaoling Li ◽  
Xiutang Zhang
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Chemical Fixation ◽  
Efficient Detection ◽  
Honeycomb Material ◽  
Excellent Catalytic Performance ◽  
Organic Framework

The robust, double-walled, honeycomb material {[ZnHo(TDP)(H2O)]·2DMF·4H2O}n exhibits an excellent catalytic performance in the chemical fixation of CO2 and the efficient detection of Fe(iii) ions in aqueous solution.

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