Regular ArticleOxidation Activity and 18O-Isotope Exchange Behavior of Cu-Stabilized Cubic Zirconia
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2022, International Journal of Hydrogen EnergySteering the methanol steam reforming performance of Cu/ZrO<inf>2</inf> catalysts by modification of the Cu-ZrO<inf>2</inf> interface dimensions resulting from Cu loading variation
2021, Applied Catalysis A: GeneralCitation Excerpt :We are able to provide information on the change in lattice parameter, crystallite size and microstrain as a function of Cu loading and, thus, the Cu-ZrO2 interface dimension as derived from Rietveld refinement of the ex situ collected XRD patterns (Fig. 4). Previous work showed that the lattice parameters and unit cell volume of ZrO2 decrease with Cu substitution in the ZrO2 lattice [32]. However, there is no significant change in the lattice parameters and unit cell volume with increasing Cu content in our case (Panel A).
Cubic Cu<inf>x</inf>ZrO<inf>100-x</inf> as an efficient and selective catalyst for the oxidation of aromatics active methyl, alcohol, and amine groups
2021, PolyhedronCitation Excerpt :The high thermal stability of cubic ZrO2 (2400 °C) as compared to its analogues, i.e., monoclinic (1100 °C) and tetragonal (1400 °C) [17] and the presence of both acidic and basic sites on the surface, and it makes an excellent candidate for redox type of catalysis [18]. Furthermore, zirconia was stabilized into the cubic phase using copper and nickel oxide and used for light alkane oxidation [19,20]. Considering these points, herein, we have developed a facile synthetic method for the synthesis of active Cu-containing Zr-supported metal oxide catalysts by a co-precipitation-hydrothermal method at milder temperatures.
Abatement of Volatile Organic Compounds Emission as a Target for Various Human Activities Including Energy Production
2018, Advances in Inorganic ChemistryCitation Excerpt :Furthermore, the active phase is very often deposited on a support characterized by an expanded surface area. The support in catalysts for VOCs combustion can play an important role: Al2O3,49,59,101–106 TiO2,107–115 ZrO2,48,53,116–118 CeO2,41,119–124 Nb2O5,125 SnO2,126,127 Cr2O3,128,129 MnO2,130,131 mesoporous silica,57,132–137 zeolites,137–148 clays,149–154 or even various carbons.39,50,155–157 The deposition of the active phase on a porous support not only increases its dispersion and limits consumption of expensive ingredients used in the catalyst production but also results in the appearance of specific properties related to synergetic effects of the system components.
On the bifunctional nature of Cu/ZrO<inf>2</inf> catalysts applied in the hydrogenation of ethyl acetate
2017, Journal of CatalysisCitation Excerpt :Zirconia was investigated for redox reactions doped with other metal oxides, which changed its phase composition [3], and its utilization as active material was investigated in detail [7,8]. In particular, zirconia was used in hydrogenation reactions [9,10], hydrogen generation by direct oxidation of hydrocarbons [11], and CO oxidation [12]. Although there were many different doping materials tested, the focus was often on catalysts containing Cu as active component.
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