Co–Ni bimetal catalyst supported on perovskite-type oxide for steam reforming of ethanol to produce hydrogen

Wang, Zijun; Wang, Changxu; Chen, Shunquan; Liu, Yuan

doi:10.1016/j.ijhydene.2014.01.151

Cited by 111 publications

(34 citation statements)

References 44 publications

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“…Additionally, the bimetallic metal-Ni catalysts are intensively investigated and used in hydrogen production technologies. An important advantage of nickel-supported catalysts is their low cost [6,7]. It is reported the significant impact of copper addition to the nickel supported catalyst which improves the reducibility of these systems [8,9].…”

Section: Introductionmentioning

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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Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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“…Therefore, more and more researchers focused on studying hydrocarbon steam reforming over Ni-based catalysts [16][17][18][19][20][21]. However, coking is easily deposited on the surface of the active phase Ni, which can lower the catalytic activity [24][25][26][27]. Therefore, various promoters were introduced into Ni-based catalysts to improve catalytic activity and coking resistance.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Performance and Characterization of Ni-Co Bi-Metallic Catalysts in n-Decane Steam Reforming: Effects of Co Addition

Yu¹,

Jiao

Wang³

et al. 2018

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Co-Ni bi-metallic catalysts supported on Ce-Al2O3 (CA) were prepared with different Co ratios, and the catalytic behaviors were assessed in the n-decane steam reforming reaction with the purpose of obtaining high H2 yield with lower inactivation by carbon deposition. Physicochemical characteristics studies, involving N2 adsorption-desorption, X-ray diffraction (XRD), H2-temperature-programmed reduction (H2-TPR), NH3 temperature programmed reduction (NH3-TPD), SEM-energy dispersive spectrometer (EDS), and transmission electron microscope (TEM)/HRTEM, were performed to reveal the textural, structural and morphological properties of the catalysts. Activity test indicated that the addition of moderate Co can improve the hydrogen selectivity and anti-coking ability compared with the mono-Ni/Ce-Al2O3 contrast catalyst. In addition, 12% Co showed the best catalytic activity in the series Co-Ni/Ce-Al2O3 catalysts. The results of catalysts characterizations of XRD and N2 adsorption-desorption manifesting the metal-support interactions were significantly enhanced, and there was obvious synergistic effect between Ni and Co. Moreover, the introduction of 12% Co and 6% Ni did not exceed the monolayer saturation capacity of the Ce-Al2O3 support. Finally, 6 h stability test for the optimal catalyst 12%Co-Ni/Ce-Al2O3 demonstrated that the catalyst has good long-term stability to provide high hydrogen selectivity, as well as good resistance to coke deposition.

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“…Steam reforming of ethanol (SRE) for hydrogen production is an endothermic process; Equation (1) gives a simplified representation of this process [3,4]. The SRE can also be represented by a network of reactions (Equations (2)- (10)) [5][6][7], depending on the reaction conditions and the catalyst used, to reflect the formation of a complex set of by-products including carbon monoxide (CO), methane (CH4), ethane (C2H6), ethylene (C2H4), and acetaldehyde (CH3CHO) [4,8,9].…”

Section: Introductionmentioning

confidence: 99%

“…The ability of base metals, such as Ni [5,7,10,11], Cu [3,7], Al [12], Zn [13], and Co [14][15][16][17], and noble metals, such as Pt [18], Rh [19][20][21][22], Pd [23], Ru [24], and Ir [25], supported on various metal oxides to catalyze the SRE has been widely investigated. Ethanol activation pathways depend on the metal nature, and can be generally divided in two groups: the less-oxophilic metals (Pd and Pt) in which α-C-H activation takes place, and the more-oxophilic metals (Co, Ni, Rh, Ru) that promote activation via O-H.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Production by Steam Reforming of Ethanol on Rh-Pt Catalysts: Influence of CeO2, ZrO2, and La2O3 as Supports

et al. 2015

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CeO2-, ZrO2-, and La2O3-supported Rh-Pt catalysts were tested to assess their ability to catalyze the steam reforming of ethanol (SRE) for H2 production. SRE activity tests were performed using EtOH:H2O:N2 (molar ratio 1:3:51) at a gaseous space velocity of 70,600 h −1 between 400 and 700 °C at atmospheric pressure. The SRE stability of the catalysts was tested at 700 °C for 27 h time on stream under the same conditions. RhPt/CeO2, which showed the best performance in the stability test, also produced the highest H2 yield above 600 °C, followed by RhPt/La2O3 and RhPt/ZrO2. The fresh and aged catalysts were characterized by TEM, XPS, and TGA. The higher H2 selectivity of RhPt/CeO2 was ascribed to the formation of small (~5 nm) and stable particles probably consistent of Rh-Pt alloys with a Pt surface enrichment. Both metals were oxidized and acted as an almost constant active phase during the stability test owing to strong metal-support interactions, as well as the superior oxygen mobility of the support. The TGA results confirmed the absence of carbonaceous residues in all the aged catalysts.

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Co–Ni bimetal catalyst supported on perovskite-type oxide for steam reforming of ethanol to produce hydrogen

Cited by 111 publications

References 44 publications

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

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

Catalytic Performance and Characterization of Ni-Co Bi-Metallic Catalysts in n-Decane Steam Reforming: Effects of Co Addition

Hydrogen Production by Steam Reforming of Ethanol on Rh-Pt Catalysts: Influence of CeO2, ZrO2, and La2O3 as Supports

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