Confined Ni-In intermetallic alloy nanocatalyst with excellent coking resistance for methane dry reforming

Liu, Wenming; Li, Le; Lin, Sixue; Luo, Yiwei; Bao, Zhenghong; Mao, Yiru; Li, Kongzhai; Wu, Daishe; Peng, Honggen

doi:10.1016/j.jechem.2021.05.017

Cited by 126 publications

(35 citation statements)

References 78 publications

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“…The authors stated that In plays a double role as CeO 2 modifier, promoting the formation of a higher number of Ce 3+ sites after reduction, and increasing the Ni performance by an alloy formation. The longterm stability of a Ni-In based catalyst for dry reforming was assessed by Liu et al [146], who prepared a series of confined Ni-In intermetallic alloy nanocatalysts (In x Ni@SiO 2 ) via a one-pot method using the bimetallic nanoparticles as cores and porous SiO 2 as shell. TEOS was used as silica precursor.…”

Section: Metal Oxides As Activity Promotersmentioning

confidence: 99%

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Catalytic Upgrading of Clean Biogas to Synthesis Gas

et al. 2022

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Clean biogas, produced by anaerobic digestion of biomasses or organic wastes, is one of the most promising substitutes for natural gas. After its purification, it can be valorized through different reforming processes that convert CH4 and CO2 into synthesis gas (a mixture of CO and H2). However, these processes have many issues related to the harsh conditions of reaction used, the high carbon formation rate and the remarkable endothermicity of the reforming reactions. In this context, the use of the appropriate catalyst is of paramount importance to avoid deactivation, to deal with heat issues and mild reaction conditions and to attain an exploitable syngas composition. The development of a catalyst with high activity and stability can be achieved using different active phases, catalytic supports, promoters, preparation methods and catalyst configurations. In this paper, a review of the recent findings in biogas reforming is presented. The different elements that compose the catalytic system are systematically reviewed with particular attention on the new findings that allow to obtain catalysts with high activity, stability, and resistance towards carbon formation.

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Section: Metal Oxides As Activity Promotersmentioning

confidence: 99%

“…TEM images and Ni particle size distributions of spent (A) Ni@SiO2-20 h, (B) In0.1Ni@SiO2 20 h, (C) In0.5Ni@SiO2-20 h, (D) In1.0Ni@SiO2-20 h, (E) In3.0Ni@SiO2-20 h, and (F) In7.0Ni@SiO2-20 h catalysts. Reprinted with permission from [146].…”

Section: Metal Oxides As Activity Promotersmentioning

confidence: 99%

Catalytic Upgrading of Clean Biogas to Synthesis Gas

et al. 2022

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“…To avoid the carbon deposition, several approaches have been reported: Liu et al prepared a core-shell catalyst with Ni-ZrO 2 @microporous SiO 2 structure [ 16 ], Peng et al fabricated a unique catalyst with Ni NPs confined on a dendric mesoporous SiO 2 [ 17 ], Lin et al also developed a core-shell catalyst with Ni-CeO 2 @microporous SiO 2 structure [ 18 ], and Liu et al reported an intermetallic alloy nano catalyst (In x Ni@SiO 2 ) [ 19 ]. In this context, we hypothesized that metal NPs embedded into support (metal) oxides would physically suppress the formation of carbon species (Fig.…”

Section: Introductionmentioning

confidence: 99%

One-Step Solvothermal Synthesis of Ni Nanoparticle Catalysts Embedded in ZrO2 Porous Spheres to Suppress Carbon Deposition in Low-Temperature Dry Reforming of Methane

et al. 2022

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Ni nanoparticle catalysts embedded in ZrO2 porous spheres and ZrO2 porous composite spheres, SiO2-ZrO2, MgO-ZrO2, and Y2O3-ZrO2, with 83−115 nm diameter and 167–269 m2/g specific surface area were prepared by a one-pot and one-step solvothermal reaction from precursor solutions consisting of Ni(NO3)2‧6H2O, Zr(OnBu)4, and acetylacetone in moist ethanol combined with either Si(OEt)4, magnesium acetylacetate, or Y(OiPr)3. The obtained Ni catalysts have high specific surface areas of 130–196 m2/g, even after high-temperature reduction by H2 at 450 °C for 2 h. They were utilized as catalysts for low-temperature dry reforming of methane (DRM) at 550 °C to suppress carbon deposition on Ni nanoparticles. The Ni catalysts embedded in SiO2-ZrO2 and Y2O3-ZrO2 demonstrated high catalytic activity and long stability in the reaction. Moreover, carbon deposition on Ni nanoparticles in the DRM reaction was effectively suppressed in when using the SiO2-ZrO2 and Y2O3-ZrO2 composites. Graphical abstract

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“…The inhibition of metal sintering by immobilizing Ni nanoparticles via confining strategy was particularly efficient to overcome carbon deposition. [15] For instance, Peng et al [16][17][18] proposed confined structure with porous SiO 2 as the shell along with alloying, and additives which enhanced the coking resistance and stability of Ni-based catalysts for DRM. More recently, Song et al [19] reported a molybdenum-doped nickel nanocatalyst stabilized at the edges of a single-crystalline MgO and showed robust stability for DRM at 800 °C.…”

Section: Introductionmentioning

confidence: 99%

“…The inhibition of metal sintering by immobilizing Ni nanoparticles via confining strategy was particularly efficient to overcome carbon deposition [15] . For instance, Peng et al [16–18] . proposed confined structure with porous SiO 2 as the shell along with alloying, and additives which enhanced the coking resistance and stability of Ni‐based catalysts for DRM.…”

Section: Introductionmentioning

confidence: 99%

Promoting Dry Reforming of Methane Catalysed by Atomically‐Dispersed Ni over Ceria‐Upgraded Boron Nitride

Maitarad

Zhang

et al. 2022

Chemistry An Asian Journal

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Dry reforming of methane (DRM) is a very promising protocol to mitigate the greenhouse gases by making use of CO 2 and CH 4 to produce valuable syngas. Nibased catalysts exhibit high activity and low cost for DRM, but suffer from inferior stability because of serious carbon deposition. Herein, we proposed atomically dispersed Ni supported by ceria-upgraded boron nitride whose specific activity exceeds that of boron nitride-supported Ni by 3 times. The results of temperature-programmed surface reaction show ceria enhanced the adsorption of CO 2 and its surface-active oxygen species would contribute to the activation of CH 4 . Moreover, Ni exhibited a strong metalsupport interaction which suppressed the metal sintering during the DRM reaction while the incorporation of BN could suppress carbon deposition. The incorporation of active metal oxides into inert support provides a route to adjust the interaction between metal and support, and to achieve a synergistic improvement in catalytic performance.

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Confined Ni-In intermetallic alloy nanocatalyst with excellent coking resistance for methane dry reforming

Cited by 126 publications

References 78 publications

Catalytic Upgrading of Clean Biogas to Synthesis Gas

Catalytic Upgrading of Clean Biogas to Synthesis Gas

One-Step Solvothermal Synthesis of Ni Nanoparticle Catalysts Embedded in ZrO2 Porous Spheres to Suppress Carbon Deposition in Low-Temperature Dry Reforming of Methane

Promoting Dry Reforming of Methane Catalysed by Atomically‐Dispersed Ni over Ceria‐Upgraded Boron Nitride

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