Catalytic activities of Re–Ni/CeO2 bimetallic catalysts for water gas shift reaction

Chayakul, Kingkaew; Srithanratana, Tipaporn; Hengrasmee, Sunantha

doi:10.1016/j.cattod.2011.05.022

Cited by 57 publications

(39 citation statements)

References 65 publications

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“…S2) [19,28]. and previous results [31], the low temperature peak can be ascribed to the reduction of NiO nanoparticles, and the peak at higher temperature could be due to the reduction of surface ceria. In general, the reduction temperatures are relatively high compared to other systems in which Ni and CeO 2 were supported over activated carbon [32].…”

Section: Characterizationmentioning

confidence: 82%

Promoter effect of sodium in graphene-supported Ni and Ni–CeO2 catalyst for the low-temperature WGS reaction

Dongil

Pastor‐Pérez

Sepúlveda-Escribano

et al. 2015

Applied Catalysis A: General

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Graphical abstract Highlights-Graphene-supported Ni and Ni-CeO 2 catalysts have been studied.-Metal dispersion depends on the presence of ceria and on the precipitating agent, NaOH or urea.-The graphene support strongly interacts with the ceria promoter.-The presence of sodium increases the catalytic activity, mainly in the presence of ceria. AbstractThe low temperature water-gas shift (WGS) reaction has been studied over NiCeO 2 /Graphene and Ni/Graphene. The catalysts were prepared with 5 wt% Ni and 20 wt% CeO 2 loadings, by deposition-precipitation employing sodium hydroxide and urea as precipitating agents. The materials were characterized by TEM, powder X-ray diffraction, Raman spectroscopy, H 2 -temperature-programmed reduction and X-ray photoelectron spectroscopy (XPS). The characterization and the reaction results indicated that the interaction between the active species and the support is higher than with activated carbon, and this hinders the reducibility of ceria and thus the catalytic performance. On the other hand, the presence of residual sodium in samples prepared by precipitation with NaOH facilitated the reduction of ceria. The catalytic activity was highly improved in the presence of sodium, what can be explained on the basis of an associative reaction mechanism which is favored over Ni-O-Na entities.

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Section: Characterizationmentioning

confidence: 82%

Promoter effect of sodium in graphene-supported Ni and Ni–CeO2 catalyst for the low-temperature WGS reaction

Dongil

Pastor‐Pérez

Sepúlveda-Escribano

et al. 2015

Applied Catalysis A: General

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“…Based on the partial oxidation of propane catalyst [24], Caglayan and Aksoylu [25] used PteNi/ Al 2 O 3 catalyst for WGSR and reported that the bimetallic catalyst exhibited better performance compared with monometallic catalysts. Chayakul et al [26] examined the catalytic activities of ReeNi/CeO 2 bimetallic catalysts for WGSR and found that the bimetallic catalyst exhibited higher catalytic activity than monometallic Ni/CeO 2 and the reaction rates depended on the Ni content. Recently, Wang et al [27] compared the PteNi activity supported by various oxides such as g-Al 2 O 3 , SiO 2 , TiO 2 , CeO 2 , HSA-ZrO 2 , and LSA-ZrO 2 .…”

Section: Introductionmentioning

confidence: 98%

Study on water–gas shift reaction performance using Pt-based catalysts at high temperatures

Chein

Lin

Chen

et al. 2014

International Journal of Hydrogen Energy

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“…Applying a nanocomposite of Pt-Re alloy nanoparticles deposited onto TiO 2 OPEN ACCESS matrix it has been proven possible to transform tertiary amides into their corresponding amines using high pressure hydrogen atmosphere [13]. Rhenium-nickel oxide has been reported as an efficient catalyst for the water gas shift reaction [14]. Re-containing catalysts showed high performance for selective oxidation of methanol and ethanol [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Rhenium Nanochemistry for Catalyst Preparation

Kessler

Seisenbaeva

2012

Minerals

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Abstract:The review presents synthetic approaches to modern rhenium-based catalysts. Creation of an active center is considered as a process of obtaining a nanoparticle or a molecule, immobilized within a matrix of the substrate. Selective chemical routes to preparation of particles of rhenium alloys, rhenium oxides and the molecules of alkyltrioxorhenium, and their insertion into porous structure of zeolites, ordered mesoporous MCM matrices, anodic mesoporous alumina, and porous transition metal oxides are considered. Structure-property relationships are traced for these catalysts in relation to such processes as alkylation and isomerization, olefin metathesis, selective oxidation of olefins, methanol to formaldehyde conversion, etc.

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Catalytic activities of Re–Ni/CeO2 bimetallic catalysts for water gas shift reaction

Cited by 57 publications

References 65 publications

Promoter effect of sodium in graphene-supported Ni and Ni–CeO2 catalyst for the low-temperature WGS reaction

Promoter effect of sodium in graphene-supported Ni and Ni–CeO2 catalyst for the low-temperature WGS reaction

Study on water–gas shift reaction performance using Pt-based catalysts at high temperatures

Rhenium Nanochemistry for Catalyst Preparation

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