Effect of impregnation solvent on Ni dispersion and catalytic properties of Ni/SBA-15 for CO methanation reaction

Tao, Miao; Meng, Xin; Lv, Yuhao; Bian, Zhicheng; Xin, Zhong

doi:10.1016/j.fuel.2015.10.023

Cited by 134 publications

(74 citation statements)

References 38 publications

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“…Moreover, and contrary to that found in the literature 7,33,34 , a relevant decrease of the specific and external surface areas and mesoporous volumes was verified for all the supports after impregnation with Ni and Ce samples, which might be attributed to the presence of NiO and/or CeO2 particles on the surface and channels of the mesoporous materials. Furthermore, no significant differences were observed in the average pore diameters after the impregnation for the SBA-15 materials, indicating that the SBA-15 porous system is preserved after metals incorporation, as also concluded by the XRD results.…”

Section: Catalysts Characterizationcontrasting

confidence: 99%

“…Concerning H2-TPR for the samples only containing Ni (Figure 4, straight lines), two main peaks attributed to NiO weakly interacting with the supports (<500ºC) and NiO strongly interacting with the supports (>500ºC) were observed 6,7,13,[39][40][41][42][43] . The first peak is the predominant in both the SBA-15 and USY zeolite, being mostly reduced during the pre-treatment.…”

Section: Catalysts Characterizationmentioning

confidence: 99%

“…So far, few works have been published dealing with the use of micro and mesoporous materials as supports for Ni-based CO2 and CO methanation catalysts [6][7][8][9][10][11][12][13][14][15][16][17] , the mainly used being USY zeolite, SBA-15 and MCM-41. Ni-based USY zeolite catalysts showed interesting performances towards methanation being reported the effect of Ni content, Ce addition, the preparation method conditions and some highlights concerning the reaction mechanism 6,[17][18][19] .…”

Section: Introductionmentioning

confidence: 99%

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Micro- and mesoporous supports for CO2 methanation catalysts: A comparison between SBA-15, MCM-41 and USY zeolite

Bacariza

Graça

Bebiano

et al. 2018

Chemical Engineering Science

119

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This version is available at https://strathprints.strath.ac.uk/62298/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. All the results are comparable to the obtained using a HNaUSY zeolite with Si/Al=2.8 as support. Cerium incorporation on Ni/mesoporous supports allowed enhancing the CO2 conversion, especially at lower temperatures, as already reported for the zeolite-based samples.

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Section: Catalysts Characterizationcontrasting

confidence: 99%

Section: Catalysts Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Micro- and mesoporous supports for CO2 methanation catalysts: A comparison between SBA-15, MCM-41 and USY zeolite

Bacariza

Graça

Bebiano

et al. 2018

Chemical Engineering Science

119

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“…In agreement with previous works for similar catalyst preparations, the TPR profile of the Ni/SBA‐15‐ImU catalyst presents two main peaks, the first at about the same temperature range as massive NiO, and the second one at a higher temperature (around 540 °C). In a generic way, without additional evidence, this second peak has been previously ascribed by other authors to NiO in strong interaction with the silica support or in the interior of the mesoporous structure of SBA‐15 . On the other hand, the Ni/SBA‐15‐DP sample is dominated by a main peak centered at high temperature (660 °C), accompanied by a small and wide shoulder between 350 and 450 °C, once again approximately corresponding to the temperature reduction interval of massive NiO, whose TPR profile is also included in Figure .…”

Section: Figuresupporting

confidence: 88%

Identification of Outer and Inner Nickel Particles in a Mesoporous Support: How the Channels Modify the Reducibility of Ni/SBA‐15 Catalysts

Rodriguez‐Gomez

Caballero

2016

ChemNanoMat

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Two different nickel supported on SBA‐15 catalytic systems have been prepared by means of impregnation (Ni/SBA‐15‐ImU) and deposition‐precipitation (Ni/SBA‐15‐DP) methodologies. Upon calcination, Ni/SBA‐15DP presents a well‐developed nickel phyllosilicate phase, which after reduction gives rise to a dispersed and homogeneous metallic phase, mainly located inside the 5 nm in diameter mesoporous structure of the support. On the contrary, as evidenced by XRD and a double temperature programmed reduction (TPR) peak, the Ni/SBA‐15‐ImU catalyst presents two different NiO phases, which after reduction in hydrogen generate nickel particles in a wide range of sizes. In situ XAS and XPS have unambiguously showed that the distinct TPR profiles obtained for each system are related with particles located in and out the mesoporous structure of the SBA‐15 channels. The particles inside the porous are more difficult to reduce, clearly showing a kind of confinement effect of the SBA‐15 mesostructure, modifying the reducibility of the NiO phase.

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“…Over the past decade, the coal gasification method for preparing synthetic gas has been extensively investigated. CO methanation is one of the most important reactions investigated for this process [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Core-Shell Structured Ni@SiO2 Catalysts Exhibiting Excellent Catalytic Performance for Syngas Methanation Reactions

Yang

Wen

2017

Catalysts

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Abstract:In this study, we prepared core-shell structured Ni@SiO 2 catalysts using chemical precipitation and modified Stöber methods. The obtained Ni@SiO 2 samples exhibited excellent catalysis performances, including high CO conversion of 99.0% and CH 4 yield of 89.8%. Moreover, Ni@SiO 2 exhibited excellent catalytic stability during a 100 h lifetime test, which was superior to that of the Ni/SiO 2 catalyst. The prepared samples were characterized using a series of techniques, and the results indicated that the catalytic performance for syngas methanation reaction of the Ni@SiO 2 sample was markedly improved owing to its nanoreactor structure. The strong interaction between the Ni core and the SiO 2 shell effectively restrained the growth of particles, and the deposition of C species.

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Effect of impregnation solvent on Ni dispersion and catalytic properties of Ni/SBA-15 for CO methanation reaction

Cited by 134 publications

References 38 publications

Micro- and mesoporous supports for CO2 methanation catalysts: A comparison between SBA-15, MCM-41 and USY zeolite

Micro- and mesoporous supports for CO2 methanation catalysts: A comparison between SBA-15, MCM-41 and USY zeolite

Identification of Outer and Inner Nickel Particles in a Mesoporous Support: How the Channels Modify the Reducibility of Ni/SBA‐15 Catalysts

Core-Shell Structured Ni@SiO2 Catalysts Exhibiting Excellent Catalytic Performance for Syngas Methanation Reactions

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