Mg-Al oxide supported Ni catalysts with enhanced stability for efficient synthetic natural gas from syngas

Fan, Mei-Ting; Miao, Kunpeng; Lin, Jingdong; Zhang, Hongbin; Liao, Dai‐Wei

doi:10.1016/j.apsusc.2014.04.098

Cited by 44 publications

(18 citation statements)

References 29 publications

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“…This indicates that the Al 2 O 3 support is more favorable to the dispersion of Ni active particles, which is consistent with the results of Fan et al [33]. According to the metal particle sizes derived from the line broadening of XRD (shown in Table 1), the Ni active particle size is the lowest for the Al 2 O 3 supported catalyst compared to the other single supports, confirming that the Ni species are well dispersed on the surface of Al 2 O 3 .…”

Section: Textural Properties Of the Catalystssupporting

confidence: 92%

“…However, the composite oxide as support for Ni based catalysts is less employed in the methanation reaction. Fan et al [33] reported that Mg-Al oxide supported Ni catalysts showed higher activity at low temperature and excellent thermal stability compared to the Ni/MgO and Ni/Al 2 O 3 catalysts. The results of Guo et al [34] indicated that the ZrO 2 -Al 2 O 3 modified Ni catalyst improved the anti-carbon Fuel Processing Technology xxx (2015) xxx-xxx deposition and anti-sintering of Ni particles.…”

Section: Introductionmentioning

confidence: 98%

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Bio-syngas methanation towards synthetic natural gas (SNG) over highly active Al 2 O 3 –CeO 2 supported Ni catalyst

Ding

Wang

et al. 2015

Fuel Processing Technology

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Section: Textural Properties Of the Catalystssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 98%

Bio-syngas methanation towards synthetic natural gas (SNG) over highly active Al 2 O 3 –CeO 2 supported Ni catalyst

Ding

Wang

et al. 2015

Fuel Processing Technology

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“…However, for Ni/MgAl-LDO (used), the diffraction peaks of spinel (MgAl2O4) could be observed at 2θ of 19.03°, 31.27°, 36.85°, 44.83°, 55.66°, 59.37°, and 65.24°, suggesting spinel (MgAl2O4) formation during the reaction. Spinel could promote catalytic performance, leading to enhanced reactivity with increasing temperature [12,31]. …”

Section: 5tem and Xrd Characterization Of The Used Catalystsmentioning

confidence: 99%

Two-Dimensional Layered Double Hydroxide Derived from Vermiculite Waste Water Supported Highly Dispersed Ni Nanoparticles for CO Methanation

Zhu

Tian

et al. 2017

Catalysts

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Expanded multilayered vermiculite (VMT) was successfully used as catalyst support and Ni/VMT synthesized by microwave irradiation assisted synthesis (MIAS) exhibited excellent performance in our previous work. We also developed a two-dimensional porous SiO 2 nanomesh (2D VMT-SiO 2 ) by mixed-acid etching of VMT. Compared with three-dimensional (3D) MCM-41, 2D VMT-SiO 2 as a catalyst support provided a superior position for implantation of NiO species and the as-obtained catalyst exhibited excellent performance. In this paper, we successfully synthesized a layered double hydroxide (LDH) using the spent liquor after mixed-acid etching of VMT, which mainly contained Mg 2+ and Al 3+ . The as-calcined layered double oxide (LDO) was used as a catalyst support for CO methanation. Compared with Ni/MgAl-LDO, Ni/VMT-LDO had smaller active component particles; therefore, in this study, it exhibited excellent catalytic performance over the whole temperature range of 250-500 • C. Ni/VMT-LDO achieved the best activity with 87.88% CO conversion, 89.97% CH 4 selectivity, and 12.47 × 10 −2 ·s −1 turn over frequency (TOF) at 400 • C under a gas hourly space velocity of 20,000 mL/g/h. This study demonstrated that VMT-LDO as a catalyst support provided an efficient way to develop high-performance catalysts for synthetic natural gas (SNG) from syngas.

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“…The composite catalysts comprising NiO, MgO and Al 2 O 3 are interesting though, at the same time, they are difficult for systematic studies [4][5][6][7]. A complex influence of MgO on the catalyst properties is a result of the formation of NiO-MgO solid solutions [8,9], changes of the NiO reduction degree and nickel dispersion [7,10], changes of the surface acidity [11] as well as an interaction of the catalyst with components of the reaction mixture [12].…”

Section: Introductionmentioning

confidence: 99%

Methane steam reforming at low temperature over Ni-MgO-Al2O3 catalysts: activity and resistance to coking

Pańczyk¹,

Denis²,

Stołecki³

et al. 2018

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The role of MgO as a factor improving the resistance to coking of the alumina supported nickel catalysts in the steam reforming of hydrocarbons is discussed. A series of catalysts containing variable amounts of MgO, NiO and a constant amount of Al2O3 was prepared by the co-precipitation method. It was found that the specific activity of the catalysts exhibits a broad but not deep minimum for the MgO contents from 8.5 to 27.3 wt.%. At the same time these catalysts reveal a high resistance to coking either in the reaction with methane or with n-butane. The most promising composition, in terms of the activity and simultaneous resistance to the coke formation, was found to be 27.3 wt.% of MgO and 39.0 wt.% of NiO. The analysis of various factors controlling the activity and resistance to coking leads to the conclusion that MgO reduces the catalysts acidity what, in consequence, reduces the rate of coke formation during the reforming reactions. Furthermore, The resistance to coking correlates well with the mean size of nickel crystallites, the same is observed for the specific catalyst activity.

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Mg-Al oxide supported Ni catalysts with enhanced stability for efficient synthetic natural gas from syngas

Cited by 44 publications

References 29 publications

Bio-syngas methanation towards synthetic natural gas (SNG) over highly active Al 2 O 3 –CeO 2 supported Ni catalyst

Bio-syngas methanation towards synthetic natural gas (SNG) over highly active Al 2 O 3 –CeO 2 supported Ni catalyst

Two-Dimensional Layered Double Hydroxide Derived from Vermiculite Waste Water Supported Highly Dispersed Ni Nanoparticles for CO Methanation

Methane steam reforming at low temperature over Ni-MgO-Al2O3 catalysts: activity and resistance to coking

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