Effect of the bimetallic Ni/Cu loading on the ZrO2 support for H2 production in the autothermal steam reforming of methanol

Pérez-Hernández, R.; Gutiérrez-Martínez, A.; Espinosa-Pesqueira, M.; Estanislao, Ma. L.; Palacios, Javier

doi:10.1016/j.cattod.2014.08.009

Cited by 58 publications

(31 citation statements)

References 43 publications

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“…HRTEM image from Figure , the crystal stripes of Ni−Cu/AC can be clearly observed. The distance of the lattice fringes in the image is 0.221 nm, which is the same as the lattice spacing of the Ni−Cu alloy . The HRTEM image confirmed the results of XRD, that is, the diffraction peaks of Ni−Cu/AC originated from Ni−Cu alloy.…”

Section: Resultssupporting

confidence: 67%

Efficient Ni‐Cu/AC Bimetal Catalyst for Hydrogenolysis of Lignin to Produce High‐Value‐Added Chemicals

et al. 2020

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Efficient depolymerization of natural lignin is the key step to convert lignin to sustainable and added‐value chemicals. In this paper, a carbon‐supported Ni‐Cu bimetallic catalyst was developed for the hydrogenation of poplar lignin and β‐O‐4 model compounds. Five Ni‐Cu bimetallic catalysts were prepared by immobilizing Ni and Cu at fixed Ni loading (5%) and varied Cu loading (0%, 5%, 10%, 20%, 30%) on activated carbon (AC). All the Cu‐Ni/AC bimetal catalysts exhibited higher catalytic activity than either Ni/AC or Cu/AC catalysts. 5Ni‐5Cu/AC gave the highest bio‐oil yield of 40.2 wt% for the hydrogenation of. poplar lignin. The XPS, XRD, and HRTEM characterization of the catalysts showed that elemental copper and Cu‐Ni alloy were formed on the surface of 5Ni‐5Cu/AC catalyst, which could promote the efficient depolymerization of lignin into phenolic monomers. The possible mechanism for the lignin depolymerization was also studied and proposed based on the β‐O‐4 bond model compounds. This study provides a viable strategy for the conversion of lignin into added‐value chemicals with low cost catalyst.

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Section: Resultssupporting

confidence: 67%

Efficient Ni‐Cu/AC Bimetal Catalyst for Hydrogenolysis of Lignin to Produce High‐Value‐Added Chemicals

et al. 2020

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“…In addition, the selectivity toward H 2 production was higher for the bimetallic catalysts. Perez-Hernandez et al [27] investigated the catalytic activity in autothermal steam reforming of methanol process carried out on support ZrO 2 and bimetallic x Ni/Cu/ZrO 2 catalysts, where x = 3, 15 and 30 wt.%, respectively. The activity tests of these catalyst systems were performed in temperature range 200-400 • C. All investigated catalyst systems exhibited higher methanol conversion than the ZrO 2 support alone.…”

Section: Resultsmentioning

confidence: 99%

“…Their addition to nickel catalysts causes the easier reduction in NiO. Perez-Hernandez et al [27] investigated the reduction properties of Ni/Cu/ZrO 2 catalysts where the loading of Ni was 3, 15 and 30 wt.% of Ni/Cu (20% Ni/80% Cu), respectively. The TPR profiles of these three bimetallic catalysts with the TPR profiles were compared to their monometallic equivalents.…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Production on Cu-Ni Catalysts via the Oxy-Steam Reforming of Methanol

et al. 2020

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In this work, bimetallic Cu-Ni catalysts supported on binary oxides containing ZnO, ZrO 2 , CeO 2 and Al 2 O 3 were investigated in hydrogen production via the oxidative steam reforming of methanol (OSRM). Their physicochemical properties were extensively studied using various methods such as BET, TPR-H 2 , TPD-NH 3 , XRD, SEM-EDS, ToF-SIMS and XPS. The reactivity measurements showed that the active phase and support composition played an important role in the activity of the catalyst in the OSRM. The most active system at higher temperatures was 30% Cu-10% Ni/CeO 2 ·Al 2 O 3 , with high catalytic activity attributed to the Cu 0.8 Ni 0.2 alloy formation. In addition, the reactivity results showed that the most active catalyst exhibited high acidity and was easily reduced. At low temperatures, the best catalytic properties were exhibited by 30% Cu-10% Ni/ZrO 2 ·Al 2 O 3 . The reactivity and physicochemical properties of the studied catalysts confirmed the crucial role of alloy composition on their catalytic properties in the oxy-steam reforming of methanol. The obtained results validate the possibility of using Cu-Ni catalysts for hydrogen production.

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“…Catalysts are essential to carry out the processes with high yield and selectivity. Common catalysts used during these processes are copper and nickel based systems supported on mono-and binary oxides [5,14,[17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

High Active and Selective Ni/CeO2–Al2O3 and Pd–Ni/CeO2–Al2O3 Catalysts for Oxy-Steam Reforming of Methanol

et al. 2018

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Herein, we report monometallic Ni and bimetallic Pd–Ni catalysts supported on CeO2–Al2O3 binary oxide which are highly active and selective in oxy-steam reforming of methanol (OSRM). Monometallic and bimetallic supported catalysts were prepared by an impregnation method. The physicochemical properties of the catalytic systems were investigated using a range of methods such as: Brunauer–Emmett–Teller (BET), X-ray Powder Diffraction (XRD), Temperature-programmed reduction (TPR–H2), Temperature-programmed desorption (TPD–NH3), X-ray photoelectron spectroscopy (XPS) and Scanning Electron Microscope equipped with an energy dispersive spectrometer (SEM–EDS). We demonstrate that the addition of palladium facilitates the reduction of nickel catalysts. The activity tests performed for all catalysts confirmed the promotion effect of palladium on the catalytic activity of nickel catalyst and their selectivity towards hydrogen production. Both nickel and bimetallic palladium–nickel supported catalysts showed excellent stability during the reaction. The reported catalytic systems are valuable to make advances in the field of fuel cell technology.

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Effect of the bimetallic Ni/Cu loading on the ZrO2 support for H2 production in the autothermal steam reforming of methanol

Cited by 58 publications

References 43 publications

Efficient Ni‐Cu/AC Bimetal Catalyst for Hydrogenolysis of Lignin to Produce High‐Value‐Added Chemicals

Efficient Ni‐Cu/AC Bimetal Catalyst for Hydrogenolysis of Lignin to Produce High‐Value‐Added Chemicals

Hydrogen Production on Cu-Ni Catalysts via the Oxy-Steam Reforming of Methanol

High Active and Selective Ni/CeO2–Al2O3 and Pd–Ni/CeO2–Al2O3 Catalysts for Oxy-Steam Reforming of Methanol

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