Supported Gold Nanoparticles as Reusable Catalysts for Oxidation Reactions of Industrial Significance

Martins, Luísa M. D. R. S.; Carabineiro, Sónia A.C.; Wang, Jiawei; Rocha, Bruno G. M.; Maldonado-Hódar, Francisco J.; Pombeiro, Armando J. L.

doi:10.1002/cctc.201601442

Cited by 47 publications

(36 citation statements)

References 91 publications

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“…The hybrid catalysts were tested in the oxidation of cyclohexane and alcohols under mild conditions. Those are reactions of industrial importance for the synthesis of fine chemicals and intermediates . So far, such mononuclear gold complexes have only been reported for the oxidation of unsaturated units, but not for C−H bonds.…”

Section: Introductionsupporting

confidence: 71%

“…The highest yield was obtained for cyclohexanol oxidation (TON=1104, yield=88.3 %), which was smaller than the obtained for methyl benzyl alcohol (TON=1201, yield=96.1 %). This value is higher than those reported for Au nanoparticles supported on several oxides, obtained at 100 °C (TON=1095) …”

Section: Resultsmentioning

confidence: 52%

“…Those systems also required the presence of acid. The values were also higher than those reported for Au nanoparticles supported on several oxides (yields varying from 1.3 to 13.5 %) . A comparison is not straightforward since H 2 O 2 was also used in these systems, instead of TBHP.…”

Section: Resultsmentioning

confidence: 99%

“…A comparison is not straightforward since H 2 O 2 was also used in these systems, instead of TBHP. The advantage of the Au/oxide systems is that they did not require the presence of acid …”

Section: Resultsmentioning

confidence: 99%

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Commercial Gold(I) and Gold(III) Compounds Supported on Carbon Materials as Greener Catalysts for the Oxidation of Alkanes and Alcohols

et al. 2018

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Strategies are presented for single‐pot efficient oxidative functionalization of cyclohexane and alcohols, under mild conditions, catalysed by Au(I) or Au(III) compounds supported on different carbon materials with three different surface treatments. The obtained materials were tested for the oxidation of cyclohexane under mild conditions (room temperature and atmospheric pressure), using an environmentally friendly oxidant (tert‐butyl hydroperoxide, TBHP, 70 % aqueous solution). All materials were very selective to the production of cyclohexanol and cyclohexanone with no trace of by‐products detected. The catalysts were also tested in the selective oxidation of methyl benzyl alcohol, cyclohexanol, and 2‐octanol with TBHP, under microwave irradiation, to the corresponding aldehydes or ketones. In general, better results are obtained for the heterogenised complexes and that the most efficient support is CNT‐ox‐Na. This is the first report on the oxidation of C−H bonds using the mononuclear gold complexes used; only the oxidation of unsaturated units had been reported previously. The sp3‐C−H activation is much more difficult than the oxidation of unsaturated molecules with molecular oxidants.

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Section: Introductionsupporting

confidence: 71%

Section: Resultsmentioning

confidence: 52%

Section: Resultsmentioning

confidence: 99%

“…A comparison is not straightforward since H 2 O 2 was also used in these systems, instead of TBHP. The advantage of the Au/oxide systems is that they did not require the presence of acid …”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Commercial Gold(I) and Gold(III) Compounds Supported on Carbon Materials as Greener Catalysts for the Oxidation of Alkanes and Alcohols

et al. 2018

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“…As a result, various kinds of catalysts have been developed based on the used oxidant and reaction system, such as metal coordination polymers [6][7][8][9][10], supported noble metals [11][12][13][14][15][16], supported metal complexes [17][18][19][20], metal doped-molecular sieves [21][22][23] and metal oxides [24][25][26]. There is great difference in the catalytic activity of the same catalyst for the cyclohexane oxidation under a different catalytic system.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Performance of MgO-Supported Co Catalyst for the Liquid Phase Oxidation of Cyclohexane with Molecular Oxygen

Wang

et al. 2017

Catalysts

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Abstract:A highly-efficient and stable MgO-supported Co (Co/MgO) catalyst was developed for the oxidation of cyclohexane with oxygen. The effects of the Co loading and support on the catalytic activity of the supported Co 3 O 4 catalyst were investigated. The results show that the Co supported on MgO presented excellent activity and stability. When the Co/MgO catalyst with the Co content of 0.2 wt % (0.2%Co/MgO) was used, 12.5% cyclohexane conversion and 74.7% selectivity to cyclohexanone and cyclohexanol (KA oil) were achieved under the reaction conditions of 0.5 MPa O 2 and 140 • C for 4 h. After being repeatedly used 10 times, its catalytic activity was hardly changed. Further research showed that the high catalytic performance of the 0.2%Co/MgO catalyst is attributed to its high oxygen-absorbing ability and the high ratio between the amount of weak and medium base sites with the help of the synergistic interaction between Co and MgO.

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Catalytic Cyclohexane Oxyfunctionalization

Sutradhar,

Alegria,

Guedes da Silva

et al. 2024

Catalysis for a Sustainable Environment

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Supported Gold Nanoparticles as Reusable Catalysts for Oxidation Reactions of Industrial Significance

Abstract: Supporting informationand the ORCID identification number(s) for the author(s) of this article can be found under: http://dx.

Cited by 47 publications

References 91 publications

Commercial Gold(I) and Gold(III) Compounds Supported on Carbon Materials as Greener Catalysts for the Oxidation of Alkanes and Alcohols

Commercial Gold(I) and Gold(III) Compounds Supported on Carbon Materials as Greener Catalysts for the Oxidation of Alkanes and Alcohols

Catalytic Performance of MgO-Supported Co Catalyst for the Liquid Phase Oxidation of Cyclohexane with Molecular Oxygen

Catalytic Cyclohexane Oxyfunctionalization

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