A Ag–Pd alloy supported on an amine-functionalized UiO-66 as an efficient synergetic catalyst for the dehydrogenation of formic acid at room temperature

2016 ◽  
Vol 6 (3) ◽  
pp. 869-874 ◽  
Author(s):  
Shu-Tao Gao ◽  
Weihua Liu ◽  
Cheng Feng ◽  
Ning-Zhao Shang ◽  
Chun Wang
Keyword(s):  
Catalytic Activity ◽  
Formic Acid ◽  
Room Temperature ◽  
High Catalytic Activity ◽  
Amine Functionalized ◽  
Pd Alloy

Ag–Pd alloys deposited on an amine-functionalized UiO-66(NH2–UiO-66) have been successfully prepared via a pre-coordination method and used as a AgPd@NH2–UiO-66 catalyst with 100% H2 selectivity and a high catalytic activity.

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.

A PdAg-CeO2 nanocomposite anchored on mesoporous carbon: a highly efficient catalyst for hydrogen production from formic acid at room temperature

2019 ◽  
Vol 7 (37) ◽  
pp. 21438-21446 ◽  
Author(s):  
Zhujun Zhang ◽  
Yixing Luo ◽  
Shiwen Liu ◽  
Qilu Yao ◽  
Shaojun Qing ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Production ◽  
Formic Acid ◽  
Mesoporous Carbon ◽  
Room Temperature ◽  
High Catalytic Activity ◽  
Efficient Catalyst ◽  
Highly Efficient

Herein, CeO2-modified PdAg alloy nanocomposites were anchored on mesoporous carbon, showing exceedingly high catalytic activity for HCOOH dehydrogenation at room temperature.

Nickel (II) and oxovanadium (IV) complexes supported on MCM-41 mesoporous and their application in catalytic selective sulfide and thiol oxidation

2020 ◽  
Vol 23 ◽  
Author(s):  
Mohsen Nikoorazm ◽  
Maryam Khanmoradi ◽  
Masoumeh Sayadian
Keyword(s):  
Catalytic Activity ◽  
Room Temperature ◽  
Sol Gel ◽  
Reaction Times ◽  
Significant Loss ◽  
Spectral Studies ◽  
High Catalytic Activity ◽  
Catalytic Systems ◽  
Solvent Free Conditions ◽  
Mcm 41

Introduction:: MCM-41 was synthesized using the sol-gel method. Then two new transition metal complexes of Nickel (II) and Vanadium (IV), were synthesized by immobilization of adenine (6-aminopurine) into MCM-41 mesoporous. The compounds have been characterized by XRD, TGA, SEM, AAS and FT-IR spectral studies. Using these catalysts provided an efficient and enantioselective procedure for oxidation of sulfides to sulfoxides and oxidative coupling of thiols to their corresponding disulfides using hydrogen peroxide at room temperature. Materials and Methods:: To a solution of sulfide or thiol (1 mmol) and H2O2 (5 mmol), a determined amount of the catalyst was added. The reaction mixture was stirred at room temperature for the specific time under solvent free conditions. The progress of the reaction was monitored by TLC using n-hexane: acetone (8:2). Afterwards, the catalyst was removed from the reaction mixture by centrifugation and, then, washed with dichloromethane in order to give the pure products. Results:: All the products were obtained in excellent yields and short reaction times indicating the high activity of the synthesized catalysts. Besides, the catalysts can be recovered and reused for several runs without significant loss in their catalytic activity. Conclusion:: These catalytic systems furnish the products very quickly with excellent yields and VO-6AP-MCM-41 shows high catalytic activity compared to Ni-6AP-MCM-41.

Hollow structured CoSn(OH)6-supported Pt for effective room-temperature oxidation of gaseous formaldehyde

2016 ◽  
Vol 09 (06) ◽  
pp. 1642009 ◽  
Author(s):  
Jing Zhou ◽  
Yong Zhao ◽  
Lifan Qin ◽  
Chen Zeng ◽  
Wei Xiao
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
Room Temperature ◽  
Synergetic Effect ◽  
Hollow Structure ◽  
Pt Nanoparticles ◽  
Hydroxyl Groups ◽  
High Catalytic Activity ◽  
Temperature Oxidation ◽  
X Ray

Uniform CoSn(OH)6 hollow nanoboxes and the derivative with Pt loading (Pt/CoSn(OH)6) were herein synthesized and characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). SEM and TEM analyses showed that CoSn(OH)6 possessed mesoporous hollow structure and Pt nanoparticles with size of 2–8[Formula: see text]nm were uniformly dispersed on the surface of CoSn(OH)6 nanoboxes. The performances of the catalysts for the formaldehyde (HCHO) removal at room temperature were evaluated. These Pt/CoSn(OH)6 catalysts exhibited a remarkable catalytic activity as well as stability for room-temperature oxidative decomposition of gaseous HCHO, while the corresponding CoSn(OH)6 only showed adsorption. The synergetic effect between the highly dispersed Pt nanoparticles and the CoSn(OH)6 nanoboxes with mesoporous hollow structure, a large surface area and abundant surface hydroxyl groups is considered to be the main reason for the observed high catalytic activity of Pt/CoSn(OH)6.

scholarly journals Copper on carbon materials: stabilization by nitrogen doping

2017 ◽  
Vol 5 (21) ◽  
pp. 10574-10583 ◽  
Author(s):  
Dmitri A. Bulushev ◽  
Andrey L. Chuvilin ◽  
Vladimir I. Sobolev ◽  
Svetlana G. Stolyarova ◽  
Yury V. Shubin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Formic Acid ◽  
Nitrogen Doping ◽  
Carbon Materials ◽  
Carbon Support ◽  
High Catalytic Activity ◽  
N Doping

N-doping of carbon support prevents sintering of Cu and provides its high catalytic activity in H2 formation from formic acid.

PdAu-MnO nanoparticles supported on amine-functionalized SiO2 for the room temperature dehydrogenation of formic acid in the absence of additives

2016 ◽  
Vol 180 ◽  
pp. 586-595 ◽  
Author(s):  
Yasar Karatas ◽  
Ahmet Bulut ◽  
Mehmet Yurderi ◽  
Ilknur Efecan Ertas ◽  
Orhan Alal ◽  
...  
Keyword(s):  
Formic Acid ◽  
Room Temperature ◽  
Amine Functionalized

Oxovanadium(IV), Nickel(II) and Palladium(II) Complexes of Tridentate Salicylaldiminates Derived from 2,4-Di-ter-butyl-6-aminophenol

2001 ◽  
Vol 56 (3) ◽  
pp. 263-270 ◽  
Author(s):  
Veli T. Kasumov
Keyword(s):  
Catalytic Activity ◽  
Room Temperature ◽  
High Catalytic Activity ◽  
Tert Butyl ◽  
Preliminary Activation

Abstract Several new binuclear nickel(II), oxovanadium(IV) and palladium(II) complexes (MLX) of tridentate salicylaldimines (LXH2) obtained from substituted salicylaldehydes and 2,4-di-tert-butyl-6-aminophenol, as well as mononuclear nickel(II) and oxovanadium(IV), MQx nH2O, complexes with hydrogenated LX H2 ligands (QXH2) have been prepared and their spectroscopic, magnetic and catalytic activity (for PdLx) have been investigated. NiLx and VOLx complexes when dissolved in pyridine, take up three or two pyridine molecules to form six coordinated complexes, respectively. The Ni(II) and VO(IV) complexes obtained from QXH2 can be formu­lated as NiQx-3H2O and VOQx H2O. All VO(IV) complexes have been characterized by ESR parameters. It has been found that some PdLx complexes without any preliminary activation, in EtOH, THF and DMF exhibit high catalytic activity in the hydrogenation of nitrobenzene or cyclohexene at room temperature and at 30 -40 °C under 760 torr H2. When this reaction has been carried out in the ESR cavity at room temperature the triplet of 12 line multiplets due to the nitroxyl type coordinated radical (g = 2.013, AN = 10 G, AH = 0.8 G) was detected.

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