Gold nanoparticles supported on magnesium ferrite and magnesium oxide for the selective oxidation of benzyl alcohol

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15035-15041 ◽  
Author(s):  
Edmilson M. de Moura ◽  
Marco A. S. Garcia ◽  
Renato V. Gonçalves ◽  
Pedro K. Kiyohara ◽  
Renato F. Jardim ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Magnesium Oxide ◽  
Selective Oxidation ◽  
Magnesium Ferrite ◽  
Au Nps ◽  
Oxidation Of Benzyl Alcohol

The presence of K2CO3 significantly increased the catalytic activity and stability of Au NPs supported on magnesium oxide-based supports.

scholarly journals Influence of Co-Precipitation Agent on the Structure, Texture and Catalytic Activity of Au-CeO2 Catalysts in Low-Temperature Oxidation of Benzyl Alcohol

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 641
Author(s):  
Lukasz Wolski ◽  
Grzegorz Nowaczyk ◽  
Stefan Jurga ◽  
Maria Ziolek
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Low Temperature ◽  
Benzyl Alcohol ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Oxidation Of Benzyl Alcohol ◽  
Key Factor ◽  
Au Particle Size ◽  
Co Precipitation

The aim of the study was to establish the influence of a co-precipitation agent (i.e., NaOH–immediate precipitation; hexamethylenetetramine/urea–gradual precipitation and growth of nanostructures) on the properties and catalytic activity of as-synthesized Au-CeO2 nanocomposites. All catalysts were fully characterized with the use of XRD, nitrogen physisorption, ICP-OES, SEM, HR-TEM, UV-vis, XPS, and tested in low-temperature oxidation of benzyl alcohol as a model oxidation reaction. The results obtained in this study indicated that the type of co-precipitation agent has a significant impact on the growth of gold species. Immediate co-precipitation of Au-CeO2 nanostructures with the use of NaOH allowed obtainment of considerably smaller and more homogeneous in size gold nanoparticles than those formed by gradual co-precipitation and growth of Au-CeO2 nanostructures in the presence of hexamethylenetetramine or urea. In the catalytic tests, it was established that the key factor promoting high activity in low-temperature oxidation of benzyl alcohol was size of gold nanoparticles. The highest conversion of the alcohol was observed for the catalyst containing the smallest Au particle size (i.e., Au-CeO2 nanocomposite prepared with the use of NaOH as a co-precipitation agent).

Selective oxidation of benzyl alcohol to benzaldehyde with H2O2 in water on epichlorohydrin-modified Fe3O4 microspheres

2015 ◽  
Vol 39 (6) ◽  
pp. 4924-4932 ◽  
Author(s):  
Shiwei Xiao ◽  
Chuntao Zhang ◽  
Rong Chen ◽  
Fengxi Chen
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Title Reaction ◽  
Enhancing Effect ◽  
Oxidation Of Benzyl Alcohol ◽  
Fe3o4 Microspheres

The enhancing effect of modification by epichlorohydrin on the catalytic activity of Fe3O4 microspheres in the title reaction was theoretically and experimentally confirmed.

Solvent controlled catalysis: Synthesis of aldehyde, acid or ester by selective oxidation of benzyl alcohol with gold nanoparticles on alumina

2014 ◽  
Vol 485 ◽  
pp. 202-206 ◽  
Author(s):  
Sari Rautiainen ◽  
Olga Simakova ◽  
Hongfan Guo ◽  
Anne-Riikka Leino ◽  
Krisztián Kordás ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Oxidation Of Benzyl Alcohol

scholarly journals Synthesis of new Mn19 analogues and their structural, electrochemical and catalytic properties

2019 ◽  
Vol 48 (15) ◽  
pp. 4830-4836 ◽  
Author(s):  
Elodie Chevallot-Beroux ◽  
Ayuk M. Ako ◽  
Wolfgang Schmitt ◽  
Brendan Twamley ◽  
Joseph Moran ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Catalytic Properties ◽  
Structural Characterisation ◽  
Oxidation Of Benzyl Alcohol

We report the synthesis, structural characterisation, electrochemistry and catalytic activity in the selective oxidation of benzyl alcohol of new Mn19 and Mn18M analogues: [MnIII12MnII7(μ4-O)8(μ3-OCH3)2(μ3-Br)6(HLMe)12(MeOH)6]Br2 (2) and [MnIII12MnII6Sr(μ4-O8(μ3-Cl)8(HLMe)12(MeCN)6]Cl2 cluster (3), where H3LMe is 2,6-bis(hydroxymethyl)-p-cresol.

One-step solvothermal synthesis of Al-promoted Fe3O4 magnetic catalysts for the selective oxidation of benzyl alcohol to benzaldehyde with H2O2 in water

RSC Advances ◽  
2016 ◽  
Vol 6 (103) ◽  
pp. 101048-101060 ◽  
Author(s):  
Leisha Xiong ◽  
Rong Chen ◽  
Fengxi Chen
Keyword(s):  
Catalytic Activity ◽  
Synergistic Effect ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Solvothermal Synthesis ◽  
Active Sites ◽  
Title Reaction ◽  
Oxidation Of Benzyl Alcohol ◽  
One Step

The in situ modification of Fe3O4 by aluminium introduced new active sites besides the primary iron sites. Their synergistic effect contributes to much better catalytic activity of Al-promoted Fe3O4 in the title reaction.

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