Marked role of mesopores for the prevention of sintering and carbon deposition in dry reforming of methane over ordered mesoporous Ni–Mg–Al oxides

Pt,Pd,Ni/MgO, Pt,Pd,Ni/Mg0.97La3+0.03O, Pt,Pd,Ni/Mg0.93La3+0.07O, and Pt,Pd,Ni/Mg0.85La3+0.15O (1% of each of the Ni, Pd, and Pt) catalysts were prepared by a surfactant-assisted co-precipitation method. Samples were characterized by the XRD, XPS, XRF, FT-IR, H2-TPR, TEM, the Brunauer–Emmett–Teller (BET) method, and TGA and were tested for the dry reforming of methane (DRM). TEM and thermal gravimetric analysis (TGA) methods were used to analyze the carbon deposition on spent catalysts after 200 h at 900 °C. At a temperature of 900 °C and a 1:1 CH4:CO2 ratio, the tri-metallic Pt,Pd,Ni/Mg0.85La3+0.15O catalyst with a lanthanum promoter showed a higher conversion of CH4 (85.01%) and CO2 (98.97%) compared to the Ni,Pd,Pt/MgO catalysts in the whole temperature range. The selectivity of H2/CO decreased in the following order: Pt,Pd,Ni/Mg0.85La3+0.15O > Pt,Pd,Ni/Mg0.93La3+0.07O > Pt,Pd,Ni/Mg0.97La3+0.03O > Ni,Pd,Pt/MgO. The results indicated that among the catalysts, the Pt,Pd,Ni/Mg0.85La23+0.15O catalyst exhibited the highest activity, making it the most suitable for the dry reforming of methane reaction.

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Dry Reforming of Methane over Ni–Al2O3 and Ni–SiO2 Catalysts: Role of Preparation Methods

Catalysis Letters ◽

10.1007/s10562-020-03120-3 ◽

2020 ◽

Vol 150 (8) ◽

pp. 2180-2199 ◽

Cited By ~ 2

Author(s):

S. Dekkar ◽

S. Tezkratt ◽

D. Sellam ◽

K. Ikkour ◽

K. Parkhomenko ◽

...

Keyword(s):

Dry Reforming ◽

Dry Reforming Of Methane ◽

Preparation Methods

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Investigation of Ce(iii) promoter effects on the tri-metallic Pt, Pd, Ni/MgO catalyst in dry-reforming of methane

RSC Advances ◽

10.1039/c5ra25869c ◽

2016 ◽

Vol 6 (13) ◽

pp. 10372-10384 ◽

Cited By ~ 18

Author(s):

Faris A. J. Al-Doghachi ◽

Umer Rashid ◽

Yun Hin Taufiq-Yap

Keyword(s):

Dry Reforming ◽

Hydrogen Gas ◽

The Other ◽

Methane Molecule ◽

Dry Reforming Of Methane ◽

Promoter Effects

The DRM reaction on the Pt, Pd, Ni/Mg1−XCeXO catalyst was studied where the methane molecule was activated on the Ni metal to produce hydrogen gas. The role of the other metals like Pt and Pd impregnated on the surface of the catalyst was shown.

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Efficient dry reforming of methane with carbon dioxide reaction on Ni@Y2O3 nanofibers anti-carbon deposition catalyst prepared by electrospinning-hydrothermal method

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2020.08.202 ◽

2020 ◽

Vol 45 (56) ◽

pp. 31494-31506

Author(s):

Yongshuai Xie ◽

Fengqiong Xie ◽

Lin Wang ◽

Ying Peng ◽

Dehua Ma ◽

...

Keyword(s):

Carbon Dioxide ◽

Hydrothermal Method ◽

Carbon Deposition ◽

Dry Reforming ◽

Dry Reforming Of Methane ◽

Carbon Dioxide Reaction

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Ordered mesoporous Ni/La2O3 catalysts with interfacial synergism towards CO2 activation in dry reforming of methane

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2019.118092 ◽

2019 ◽

Vol 259 ◽

pp. 118092 ◽

Cited By ~ 17

Author(s):

Kang Li ◽

Xin Chang ◽

Chunlei Pei ◽

Xinyu Li ◽

Sai Chen ◽

...

Keyword(s):

Dry Reforming ◽

Dry Reforming Of Methane ◽

Co2 Activation ◽

Ordered Mesoporous

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One-Step Synthesis of Highly Dispersed and Stable Ni Nanoparticles Confined by CeO2 on SiO2 for Dry Reforming of Methane

Energies ◽

10.3390/en13225956 ◽

2020 ◽

Vol 13 (22) ◽

pp. 5956

Author(s):

Chengyang Zhang ◽

Renkun Zhang ◽

Hui Liu ◽

Qinhong Wei ◽

Dandan Gong ◽

...

Keyword(s):

Carbon Deposition ◽

Combustion Method ◽

Dry Reforming ◽

Dry Reforming Of Methane ◽

Solution Combustion ◽

Spatial Confinement ◽

Oxide Interfaces ◽

Highly Dispersed ◽

One Step ◽

The One

Sintering and carbon deposition are the two main ways to deactivate Ni-based catalysts during methane reforming. Herein, a stable Ni-CeO2/SiO2(CSC) catalyst was prepared by a one-step colloidal solution combustion method (CSC) and used for dry reforming of methane. In the catalyst, the small Ni particles were confined by CeO2 particles and highly dispersed on the surface of SiO2, forming a spatial confinement structure with a rich Ni-CeO2 interface in the catalyst. The Ni-CeO2/SiO2(CSC) catalyst prepared by the one-step CSC method exhibited superior activity at 700 °C during dry reforming of methane, and the performance of the catalyst was stable after 20 h of reaction with only a small amount of carbon deposition present (1.8%). Due to the spatial confinement effect, Ni was stable and less than 5 nm during reaction. The small Ni particle size and rich Ni-CeO2 interface reduced the rate of carbon deposition. This colloidal combustion method could be applied to prepare stable metal-based catalysts with rich metal–oxide interfaces for high-temperature reactions.

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