The cyclohexanol dehydrogenation on RhCuAl2O3 catalysts Part 1. Characterization of the catalyst

Mendes, Fernanda de Souza Nogueira Sardinha; Schmal, Martín

doi:10.1016/s0926-860x(96)00316-x

Cited by 72 publications

(27 citation statements)

References 24 publications

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“…ion and oxygen, while in the range of 280-360 nm the band related to the charge-transfer between Cu 2? and oxygen in oligonuclear [Cu-O-Cu] n species [22] could be expected. The peak at above 450 nm is characteristic for the d-d transition of Cu with an octahedral environment in CuO [22].…”

Section: Resultsmentioning

confidence: 97%

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Nanostructured Cu-Doped Ceria Obtained by Reverse Microemulsion Method as Catalysts for Incineration of Selected VOCs

et al. 2010

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A series of Ce 1-x Cu x O 2 (0 B x B 0.1) nanostructured oxide systems was prepared using a modified reverse microemulsion method. The thermal decomposition of the carbonate and hydroxide precursors into oxides systems was studied using thermal analysis methods (EGA-TGA/DTG/SDTA). The morphology and the structure of the samples were characterized by XRD and BET analysis as well as visualized by scanning electron microscopy (SEM). The morphology of the obtained nanoparticles depended on a kind of the precursors used. The copper substituted CeO 2 materials formed mono phase solid solutions, which were catalytically active in the incineration of various VOC molecules (ethylene, methanol, acetone). The correlation between activity of the studied catalysts and copper content has been found.

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Section: Resultsmentioning

confidence: 97%

“…and oxygen in oligonuclear [Cu-O-Cu] n species [22] could be expected. The peak at above 450 nm is characteristic for the d-d transition of Cu with an octahedral environment in CuO [22]. For the pure ceria (C-Cu-0 and H-Cu-0) the peaks at 250 and 350 nm suggest that part of Ce 4?…”

Section: Resultsmentioning

confidence: 97%

Nanostructured Cu-Doped Ceria Obtained by Reverse Microemulsion Method as Catalysts for Incineration of Selected VOCs

et al. 2010

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“…The first peak is attributed to a charge-transfer between the mononuclear Cu 2+ ion and oxygen. The maximum at about 340-360 nm can be ascribed to charge-transfer between Cu 2+ and oxygen in oligonuclear [Cu-OCu] n species, while the peak at about 800-830 nm can be related to the d-d transition of Cu with an octahedral environment in CuO [5]. The difference in the intensity of the peaks recorded for the samples is caused by the different distribution of the Cu-species.…”

Section: Resultsmentioning

confidence: 97%

Phlogophites intercalated with Al2O3 pillars and modified with transition metals as catalysts of the DeNOx process

Chmielarz

Kuśtrowski

Michalík

et al. 2007

React Kinet Catal Lett

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Natural phlogophite, pre-treated with acids and intercalated with alumina pillars, was used as catalytic support. Transition metals (Fe, Cu) were deposited on the surface of the modified clay materials by an ion-exchange method. The obtained samples were characterized with respect to structure (XRD), texture (BET), composition (EPMA) and chemical nature of the deposited transition metals species (UV-vis-DRS). The phlogophite based materials have been found to be active and selective catalysts of the DeNOx process. The Fe-containing samples were catalytically active at lower temperatures than the clays modified with copper. A competitive ammonia oxidation by oxygen decreased the effectiveness of the DeNOx process in the high temperature range.

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“…The second band at about 270-340 nm can be ascribed to charge-transfer between Cu 2? and oxygen in oligonuclear [Cu-O-Cu] n species [19,20]. The positions of these two bands differ slightly for the samples based on vermiculite and phlogopite.…”

Section: Resultsmentioning

confidence: 99%

Natural Micas Intercalated with Al2O3 and Modified with Transition Metals as Catalysts of the Selective Oxidation of Ammonia to Nitrogen

et al. 2009

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Natural cationic layered clays-vermiculite and phlogopite-pretreated with acids were intercalated with alumina pillars. In next step, transition metals were deposited on the surface of pillared interlayer clays (PILC) by a liquid ion exchange method. The catalyst samples were characterized with respect to: composition (EPMA), structure (XRD), texture (BET), surface acidity (NH 3 -TPD) and coordination of deposited transition metals (UV-vis-DRS). The modified clays were tested in the role of catalyst for the selective oxidation of ammonia to nitrogen. In a series of the studied samples the best catalytic performance presented alumina pillared vermiculite modified with copper.

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The cyclohexanol dehydrogenation on RhCuAl2O3 catalysts Part 1. Characterization of the catalyst

Cited by 72 publications

References 24 publications

Nanostructured Cu-Doped Ceria Obtained by Reverse Microemulsion Method as Catalysts for Incineration of Selected VOCs

Nanostructured Cu-Doped Ceria Obtained by Reverse Microemulsion Method as Catalysts for Incineration of Selected VOCs

Phlogophites intercalated with Al2O3 pillars and modified with transition metals as catalysts of the DeNOx process

Natural Micas Intercalated with Al2O3 and Modified with Transition Metals as Catalysts of the Selective Oxidation of Ammonia to Nitrogen

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