CO oxidation over Au supported on Mn–ZSM5 and Mn–MOR

Zamaro, Juan Manuel; Boix, Alicia Viviana; Martínez-Hernández, Angel

doi:10.1016/j.catcom.2015.06.018

Cited by 13 publications

(5 citation statements)

References 18 publications

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“…This method is convenient and can be used for producing commercial gold supported catalysts (Haruta, 2003; Carabineiro and Thompson, 2007) and applied to the widest range of different support materials (Wolf and Schüth, 2002). It was discovered also by Haruta's group in 1991 (Tsubota et al, 1991) and is still widely used (Moreau et al, 2005; Sangeetha et al, 2009; Wei et al, 2010; Tran et al, 2011; Sanada et al, 2013; Soria et al, 2014; Zahoranova et al, 2015; Zamaro et al, 2015; Pérez et al, 2016; Priecel et al, 2016; Carabineiro et al, 2017; Chen B. B. et al, 2017; Kyriakou et al, 2017; Martins et al, 2017; Rodrigues et al, 2017a,b; Vourros et al, 2017; Yu et al, 2017; Jin et al, 2018).…”

Section: Gold Catalyst Preparation Methodsmentioning

confidence: 98%

“…But the introduction of catalytically active species into the cavities of these materials, as opposed to placing them on their external surface, presents certain difficulties, namely the lack of suitable cations or cationic complexes (Bond and Thompson, 1999). Nevertheless, different kinds of Au/zeolite systems have been prepared this way (Kang and Wan, 1995, 1997; Horvath et al, 2001; Chen et al, 2005; Magadzu et al, 2007; Tuzovskaya et al, 2007; Bogdanchikova et al, 2008; Sierraalta et al, 2008; Qi et al, 2012; Sanada et al, 2013; Zeng et al, 2014; Zamaro et al, 2015; Emayavaramban et al, 2016b; Chen B. B. et al, 2017).…”

Section: Gold Catalyst Preparation Methodsmentioning

confidence: 99%

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Supported Gold Nanoparticles as Catalysts for the Oxidation of Alcohols and Alkanes

Carabineiro

2019

Front. Chem.

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Supporting gold nanoparticles have shown to be extremely active for many industrially important reactions, including oxidations. Two representative examples are the oxidation of alcohols and alkanes, that are substrates of industrial interest, but whose oxidation is still challenging. This review deals with these reactions, giving an insight of the first studies performed by gold based catalysts in these reactions and the most recent developments in the field.

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Section: Gold Catalyst Preparation Methodsmentioning

confidence: 98%

Section: Gold Catalyst Preparation Methodsmentioning

confidence: 99%

Supported Gold Nanoparticles as Catalysts for the Oxidation of Alcohols and Alkanes

Carabineiro

2019

Front. Chem.

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“…Recently, reducible metal oxides (such as MnO x , CoO x , FeO x , CeO 2 , CuO x ) have been widely studied in heterogeneous catalysis reactions, which is mainly because of their variable valence states related to the variable occupancy of 3d or 4f orbitals. ,, Among them, manganese oxides show a possible double-exchange behavior between Mn 3+ and Mn 4+ and exhibit unique catalytic redox performance, and thus, Mn-based materials contain large amounts of surface active oxygen species, which has attracted much attention in investigations of the NO + CO model reaction and the CO oxidation reaction. ,,− Thus, for example, Zou et al demonstrated that the good performance of their catalysts for CO oxidation was closely associated with their Mn contents.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Evaluation of Copper–Manganese Oxide as a High-Efficiency Catalyst for CO Oxidation and NO Reduction by CO

et al. 2017

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In this work, highly efficient Cu x −Mn composite catalysts (0 ≤ x ≤ 0.20) were synthesized by an improved hydrothermal−citrate complex method and tested in the catalytic total oxidation of CO and the removal of NO by CO. The influence of Cu on manganese oxide materials was characterized by several techniques, including FESEM, HRTEM, XRD, BET analysis, H 2 TPR, O 2 TPD, XPS, and DRIFTS. Possible reaction mechanisms for the NO + CO model reaction and CO oxidation were also tentatively proposed. The Cu-modified manganese oxide materials showed higher catalytic activity in CO oxidation and the selective catalytic reduction (SCR) of NO with CO than pure MnO x materials. The improved catalytic activity in CO oxidation observed for the copper−manganese oxide catalyst was associated with a greater amount of adsorbed oxygen species and high lattice oxygen mobility due to the formation of a Cu 1.5 Mn 1.5 O 4 spinel active phase (CuFurthermore, in terms of the CO-SCR model reaction, the surface-dispersed Cu x+ −O 2− −Mn y+ active species could be reduced to a Cu + −□−Mn (4−x)+ active species, which was considered to be the primary active component in the reduction of NO by CO. The results of the catalytic performance testing indicated that Cu 0.075 Mn had the highest catalytic activity in CO oxidation, whereas Cu 0.15 Mn exhibited the best CO-SCR catalytic performance.

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“…In another way, the incorporation of cerium into the Au/Ce/Mordenite catalyst significantly increased the oxidation of CO, which reached 100% conversion at 125 °C (Qi et al, 2012). Likewise, manganese caused a similar effect on the Mn/Au/Mordenite catalyst, where the gold particles were smaller (2-15 nm) than those of a catalyst without manganese (7-50 nm) and most importantly, there was a considerable increase in the CO oxidation activity (Zamaro et al, 2015). However, there is a lack of information about the behavior of Au supported on the TiO 2 -HMOR zeolite as a potential catalyst for the CO oxidation reaction.…”

Section: Introductionmentioning

confidence: 95%

Insights into CO oxidation on Au/TiO2-HMor zeolite catalysts at low temperature

Camposeco,

Sánchez-Flores,

Zanella

2024

Front. Nanotechnol.

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The effect of combining TiO2 and mordenite zeolite (HMOR), employed as support of gold nanoparticles, on the CO oxidation reaction at low temperature is studied. The amount of TiO2 encapsulated into HMOR was varied and the catalyst efficiency was investigated. The deposition-precipitation with urea (DPU) method was used to deposit gold nanoparticles; likewise, the synthesis of monometallic catalysts based on TiO2 and HMOR is reported. The synthesized materials were characterized by X-ray diffraction (XRD), nitrogen adsorption, X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM). The addition of TiO2 influenced the properties of the TiO2-HMOR composite, and its catalytic performance in the CO oxidation from 20°C. It was established that the 5Au/(28)TiO2-HMOR composite was the most active catalyst at lower temperatures, which was ascribed to the close contact among the components of the TiO2-HMOR composite, gold dispersion, gold and TiO2 loadings, and Au and Ti species present in the catalysts.

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CO oxidation over Au supported on Mn–ZSM5 and Mn–MOR

Cited by 13 publications

References 18 publications

Supported Gold Nanoparticles as Catalysts for the Oxidation of Alcohols and Alkanes

Supported Gold Nanoparticles as Catalysts for the Oxidation of Alcohols and Alkanes

Preparation and Evaluation of Copper–Manganese Oxide as a High-Efficiency Catalyst for CO Oxidation and NO Reduction by CO

Insights into CO oxidation on Au/TiO2-HMor zeolite catalysts at low temperature

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