Copper-nickel catalysts from hydrotalcite precursors: The performance in NO reduction by CO

Lopes, Daniel; Zotin, Fátima Marı́a Zanon; Palacio, Luz Amparo

doi:10.1016/j.apcatb.2018.06.007

Cited by 44 publications

(28 citation statements)

References 60 publications

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“…For monometallic Cu 3 Al‐MMO, there was a broad peak in the range of 230–400 °C, which can be ascribed to the reduction of highly dispersed Cu 2+ and bulk CuO [58] . The reduction temperature of NiO is closely related to its dispersity on the catalyst surface [59] . For monometallic Ni 3 Al‐MMO, the peak appeared at 303 °C, which likely represents the reduction of NiO with small crystalline grains.…”

Section: Resultsmentioning

confidence: 98%

Layered Double Hydroxide‐Derived Bimetallic Ni−Cu Catalysts Prompted the Efficient Conversion of γ‐Valerolactone to 2‐Methyltetrahydrofuran

Wang

et al. 2021

ChemCatChem

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The catalytic upgrading of γ‐valerolactone (GVL) to liquid biofuel, which is of great importance to the development of new types of high‐performance heterogeneous catalysts, is regarded as a technically difficult task because of the thermal stability of GVL. Consequently, in this study, a series of nanocatalysts NixCu3‐x/Al2O3 (x=0, 1, 1.5, 2, and 3) derived from layered double hydroxide (LDH) precursors were prepared for the hydrogenation of biomass‐derived GVL to 2‐methyltetrahydrofuran (2‐MTHF). The optimal bimetallic Ni2Cu1/Al2O3 catalyst showed high 2‐MTHF selectivity with complete GVL conversion. Detailed characterization revealed cooperation between the acid sites and Ni−Cu alloy in the bimetallic catalysts, which was responsible for their high activities. More importantly, the strong interaction between Ni and Cu changed the surface chemical environment, which generated different copper species and enhanced the H2 activation ability. The reusability of the Ni2Cu1/Al2O3 catalyst and the effect of the reaction conditions, such as temperature, H2 pressure, and solvent, were also investigated.

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Section: Resultsmentioning

confidence: 98%

Layered Double Hydroxide‐Derived Bimetallic Ni−Cu Catalysts Prompted the Efficient Conversion of γ‐Valerolactone to 2‐Methyltetrahydrofuran

Wang

et al. 2021

ChemCatChem

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“…For the Cu 3 Ni 1 Al 2 ‐HTLCs catalyst, the reduction of Ni 2+ species peak almost disappears probably due to the negligible hydrogen consumption observed in H 2 ‐TPR experiments. This result is consistent with the report of Palacio et al . However, due to the hard reduction of nickel aluminate, the peak at ca.…”

Section: Resultsmentioning

confidence: 99%

Hydrogenation of Dicyclopentadiene Resin and Its Monomer over High Efficient CuNi Alloy Catalysts

et al. 2019

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Dicyclopentadiene (DCPD) resin polymerized by DCPD contains a large number of unsaturated bonds, hydrogenation plays an important role in enhancing its thermal stability and decoloring. Herein, a series of supported Cu−Ni‐Al catalysts with high distribution and large surface areas derived from direct reduction of hydrotalcite‐like compounds have been synthesized. The hydrogenation properties of supported Cu−Ni‐Al catalysts for the DCPD resin and its monomer have been investigated. The Cu1Ni3‐Al2O3 catalyst shows the highest DCPD conversion (>99%) and selectivity to tetrahydrodicyclopentadiene (THDCPD) (>98%) under mild conditions (40 °C, 2 MPa H2) compared with the corresponding catalysts prepared by impregnation and mechanically mixed method. Due to the high particle dispersion of active‐sites and the synergistic effect between metallic Cu and Ni, the optimal catalyst (Cu1Ni3‐Al2O3) also presents an expected catalytic activity in the hydrogenation of DCPD resin.

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“…The co‐precipitation method has a wide range of applications, and almost all of the LDHs of M 2+ and M 3+ can be prepared by co‐precipitation . For example, Lopes et al . used terephthalate (TA) as a compensating anion to synthesize CuNiTA precursors by co‐precipitation method with simultaneously adding Co(NO 3 ) 2 ⋅ 6H 2 O, Ni(NO 3 ) 2 ⋅ 6H 2 O and NaOH, and then obtained the highly active and selective catalysts by calcining the precursor.…”

Section: The Methods For Preparing Hydrotalcite Compoundsmentioning

confidence: 99%

Research Progress in the Field of Adsorption and Catalytic Degradation of Sewage by Hydrotalcite‐Derived Materials

Pan

Tian

et al. 2019

The Chemical Record

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With the rapid development of industry and agriculture and the greatly improved living conditions, the resultant gradually deteriorated environments threaten the human beings. Refractory or even toxic pollutants, which are from different industries such as printing and dyeing, pesticides, chemicals, petrochemicals, plastics and rubber, seriously threat the ecosystems and human health. Having the advantages of flexible composition, unique structure, high stability, memory effect, easy preparation and low cost, hydrotalcite compounds have a great potential in sewage degradation and environmental protection. This study focuses on the adsorption and catalytic properties (such as photocatalysis, electrocatalysis and photoelectrocatalysis) of hydrotalcite-derived materials for treating organic, inorganic and heavy metal ion sewage. The types of adsorption and catalysis, and the effects of various influencing factors on the degradation efficiency were discussed as well.Wiley Online Library 355 Figure 13. The photoelectrocatalytic mechanism of organic pollutant MB over the ZNI-1-MMO-1.5 V photoelectrode.

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Copper-nickel catalysts from hydrotalcite precursors: The performance in NO reduction by CO

Cited by 44 publications

References 60 publications

Layered Double Hydroxide‐Derived Bimetallic Ni−Cu Catalysts Prompted the Efficient Conversion of γ‐Valerolactone to 2‐Methyltetrahydrofuran

Layered Double Hydroxide‐Derived Bimetallic Ni−Cu Catalysts Prompted the Efficient Conversion of γ‐Valerolactone to 2‐Methyltetrahydrofuran

Hydrogenation of Dicyclopentadiene Resin and Its Monomer over High Efficient CuNi Alloy Catalysts

Research Progress in the Field of Adsorption and Catalytic Degradation of Sewage by Hydrotalcite‐Derived Materials

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