Low temperature carbon monoxide oxidation over nanosized silver doped manganese dioxide catalysts

Kunkalekar, R.K.; Salker, A. V.

doi:10.1016/j.catcom.2010.09.013

Cited by 47 publications

(32 citation statements)

References 20 publications

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“…The absorption band at around 1635 cm −1 resembles fingerprint bending vibration modes of hydroxyl groups [83]. Therefore, it can be said that OH group in the catalyst surface acts a significant part in the 1-phenylethanol oxidation, in which the 1% ZnO x -MnCO 3 catalyst displays the highest catalytic performance associated with the other calcination temperatures [84]. In case of 300 ∘ C calcination temperature, the presence of a sharp peak at nearly 1356 cm −1 is a fingerprint for surface carbonate (CO 3 −2 ) group which confirmed the occurrence of carbonate group in the surface of the catalyst and these results are in good agreement with EDX and XRD results [85,86].…”

Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 99%

Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO₃, –MnO₂, and –Mn₂O₃ Nanocomposites for Aerial Oxidation of Alcohols

Assal

Kuniyil

Shaik

et al. 2017

Journal of Chemistry

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Zinc oxide nanoparticles doped manganese carbonate catalysts [ % ZnO x -MnCO 3 ] (where = 0-7) were prepared via a facile and straightforward coprecipitation procedure, which upon different calcination treatments yields different manganese oxides, that is, [ % ZnO x -MnO 2 ] and [ % ZnO x -Mn 2 O 3 ]. A comparative catalytic study was conducted to evaluate the catalytic efficiency between carbonates and oxides for the selective oxidation of secondary alcohols to corresponding ketones using molecular oxygen as a green oxidizing agent without using any additives or bases. The prepared catalysts were characterized by different techniques such as SEM, EDX, XRD, TEM, TGA, BET, and FTIR spectroscopy. The 1% ZnO x -MnCO 3 calcined at 300 ∘ C exhibited the best catalytic performance and possessed highest surface area, suggesting that the calcination temperature and surface area play a significant role in the alcohol oxidation. The 1% ZnO x -MnCO 3 catalyst exhibited superior catalytic performance and selectivity in the aerial oxidation of 1-phenylethanol, where 100% alcohol conversion and more than 99% product selectivity were obtained in only 5 min with superior specific activity (48 mmol⋅g −1 ⋅h −1 ) and 390.6 turnover frequency (TOF). The specific activity obtained is the highest so far (to the best of our knowledge) compared to the catalysts already reported in the literatures used for the oxidation of 1-phenylethanol. It was found that ZnO x nanoparticles play an essential role in enhancing the catalytic efficiency for the selective oxidation of alcohols. The scope of the oxidation process is extended to different types of alcohols. A variety of primary, benzylic, aliphatic, allylic, and heteroaromatic alcohols were selectively oxidized into their corresponding carbonyls with 100% convertibility without overoxidation to the carboxylic acids under base-free conditions.

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Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 99%

Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO₃, –MnO₂, and –Mn₂O₃ Nanocomposites for Aerial Oxidation of Alcohols

Assal

Kuniyil

Shaik

et al. 2017

Journal of Chemistry

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“…2 следует, что по сравнению с золотосодержащими катализа-торами доля Pt-, Pd-, Ag-содержащих катализаторов очень незначительна [28][29][30][31][32][33][34][35][36][37], а катализаторы состава Pd/SAPO-34 [28], Pd/CeO 2 [29], Pt/CeO 2 -ZrO 2 /SBA-15 [32] окисляют СО при 100-250 °С. При этом катализаторы состава Pt/УВ [33,34] и Pt/ МО х (М = Fe, Zn, Al, Ni) [35] обеспечивают 100%-ное окисление СО при комнат-Fe, Zn, Al, Ni) [35] обеспечивают 100%-ное окисление СО при комнат-, Zn, Al, Ni) [35] обеспечивают 100%-ное окисление СО при комнат-Zn, Al, Ni) [35] обеспечивают 100%-ное окисление СО при комнат-, Al, Ni) [35] обеспечивают 100%-ное окисление СО при комнат-Al, Ni) [35] обеспечивают 100%-ное окисление СО при комнат-, Ni) [35] обеспечивают 100%-ное окисление СО при комнат-Ni) [35] обеспечивают 100%-ное окисление СО при комнат-) [35] обеспечивают 100%-ное окисление СО при комнат-ной температуре, но при больших значениях t (1,13; 6 и 0,38 с, соответственно).…”

Section: состав и активность металлических катализаторов окисления моunclassified

The State and Prospects of Development of Low-Temperature Catalysts for Carbon Monoxide Oxidation of Respiratory Purpose. I Metal Catalysts

Rakitskaya¹,

Kiose²,

Ennan³

et al. 2015

Odesa National University Herald. Chemistry

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“…This can be attributed to Ag ion insertion inside the tunnel of the β-MnO 2 structure occurring more in doping than in the coating process. It is well established that MnO 2 can accommodate large ions such as Na + , K + , Ag + , and Ca 2+ [33][34][35]. Typical EDX spectrum of the Ag-doped MnO 2 films in Fig.…”

Section: Surface Morphologymentioning

confidence: 99%

Surfactant-assisted electrodeposition and improved electrochemical capacitance of silver-doped manganese oxide pseudocapacitor electrodes

Pinitsoontorn

Limtrakul

2012

J Solid State Electrochem

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Ag-doped MnO 2 pseudocapacitor electrodes with dendrite and foam-like structures were successfully produced for the first time using an electrodeposition method employing structure-directing agents, i.e., sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB) acting through micelle formation at solid-liquid interfaces. Doping silver with MnO 2 enhanced their electronic conductance. Controlling pseudocapacitor electrode morphologies with surfactants accelerated ion transport. The specific capacitance values of the Ag-doped MnO 2 films produced with SDS and CTAB, measured in 0.5 M Na 2 SO 4 at a scan rate of 5 mV s −1 were 551 and 557 Fg −1 , respectively. These values are about 2.7-fold higher than that of the pure MnO 2 film and about 1.4-fold higher than that of the Ag-doped MnO 2 film made without using surfactants.

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Low temperature carbon monoxide oxidation over nanosized silver doped manganese dioxide catalysts

Cited by 47 publications

References 20 publications

Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO₃, –MnO₂, and –Mn₂O₃ Nanocomposites for Aerial Oxidation of Alcohols

Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO₃, –MnO₂, and –Mn₂O₃ Nanocomposites for Aerial Oxidation of Alcohols

The State and Prospects of Development of Low-Temperature Catalysts for Carbon Monoxide Oxidation of Respiratory Purpose. I Metal Catalysts

Surfactant-assisted electrodeposition and improved electrochemical capacitance of silver-doped manganese oxide pseudocapacitor electrodes

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Low temperature carbon monoxide oxidation over nanosized silver doped manganese dioxide catalysts

Cited by 47 publications

References 20 publications

Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO3, –MnO2, and –Mn2O3 Nanocomposites for Aerial Oxidation of Alcohols

Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO3, –MnO2, and –Mn2O3 Nanocomposites for Aerial Oxidation of Alcohols

The State and Prospects of Development of Low-Temperature Catalysts for Carbon Monoxide Oxidation of Respiratory Purpose. I Metal Catalysts

Surfactant-assisted electrodeposition and improved electrochemical capacitance of silver-doped manganese oxide pseudocapacitor electrodes

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Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO₃, –MnO₂, and –Mn₂O₃ Nanocomposites for Aerial Oxidation of Alcohols

Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO₃, –MnO₂, and –Mn₂O₃ Nanocomposites for Aerial Oxidation of Alcohols