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Review
. 2018 Jan 31;11(2):221.
doi: 10.3390/ma11020221.

Two-Dimensional Layered Double Hydroxides for Reactions of Methanation and Methane Reforming in C1 Chemistry

Panpan Li  1 , Feng Yu  2 , Naveed Altaf  3 , Mingyuan Zhu  4 , Jiangbing Li  5 , Bin Dai  6 , Qiang Wang  7   8
Affiliations
Review

Two-Dimensional Layered Double Hydroxides for Reactions of Methanation and Methane Reforming in C1 Chemistry

Panpan Li et al. Materials (Basel). .

Abstract

CH₄ as the paramount ingredient of natural gas plays an eminent role in C1 chemistry. CH₄ catalytically converted to syngas is a significant route to transmute methane into high value-added chemicals. Moreover, the CO/CO₂ methanation reaction is one of the potent technologies for CO₂ valorization and the coal-derived natural gas production process. Due to the high thermal stability and high extent of dispersion of metallic particles, two-dimensional mixed metal oxides through calcined layered double hydroxides (LDHs) precursors are considered as the suitable supports or catalysts for both the reaction of methanation and methane reforming. The LDHs displayed compositional flexibility, small crystal sizes, high surface area and excellent basic properties. In this paper, we review previous works of LDHs applied in the reaction of both methanation and methane reforming, focus on the LDH-derived catalysts, which exhibit better catalytic performance and thermal stability than conventional catalysts prepared by impregnation method and also discuss the anti-coke ability and anti-sintering ability of LDH-derived catalysts. We believe that LDH-derived catalysts are promising materials in the heterogeneous catalytic field and provide new insight for the design of advance LDH-derived catalysts worthy of future research.

Keywords: C1 chemistry; layered double hydroxides; methanation reaction; methane reforming; two-dimensional materials.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
The applications of layered double hydroxides (LDHs) in CO and CO2 methanation.
Figure 2
Figure 2
(a) Schematic of the preparation process of NiO/VMT-LDO and (b,c) the catalytic performance of Ni/VMT-LDO [34].
Figure 3
Figure 3
(a) Schematic presence of the formation of the ultrathin LDH structure and (b–d) the catalytic performance of Ru@FL-LDHs [64].
Figure 4
Figure 4
The application of LDHs in dry reforming of methane. DRM, dry reforming of methane.
Figure 5
Figure 5
Schematic representation of the “super dry” reforming process [81].
Figure 6
Figure 6
(a) Schematic of microfibrous-structured NiO-MgO-Al2O3 nano-sheets grown on FeCrAl-fiber felt and (b) SEM image and (c) TEM image of NiMgAl-LDHs/FeCrAl-fiber-900 [82].
Figure 7
Figure 7
(a) Schematic illustration of the preparation process of the modular catalysts. (b) TEM image and (c) HAADF-STEM image of the modular catalysts [99].
Figure 8
Figure 8
The application of LDHs in steam reforming of methane.
Figure 9
Figure 9
The application of LDHs in partial oxidation of methane. POM, partial oxidation of methane.
See this image and copyright information in PMC

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