A Review on Bimetallic Nickel‐Based Catalysts for CO<sub>2</sub> Reforming of Methane

Bian, Zhoufeng; Das, Sonali; Wai, Ming Hui; Hongmanorom, Plaifa; Kawi, Sibudjing

doi:10.1002/cphc.201700529

Cited by 422 publications

(240 citation statements)

References 181 publications

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“…), the catalyst bed needs to be heated from the outside of the reactor since it involves a highly exothermic reaction by combustion of methane. Nonetheless, in most cases, coke formation is relatively severe over the catalysts used for CO 2 reforming at high temperatures (> 1073 K) , .

true \begin{matrix} left {normalCH}_{4} + {normalCO}_{2} \to 2 normalCO + 2 {normalH}_{2} & left Δ H^{0} = + 247.3 normal normalkJ normal normalmo {normall}^{- 1} \end{matrix}

true \begin{matrix} left {normalCH}_{4} \to normalC + 2 {normalH}_{2} & left Δ H^{0} = + 75 normal normalkJ normal normalmo {normall}^{- 1} \end{matrix}

true \begin{matrix} left 2 normalCO \to normalC + {normalCO}_{2} & left Δ H^{0} = - 172 normal normalkJ normal normalmo {normall}^{- 1} \end{matrix}

true \begin{matrix} left {normalCH}_{4} + 2 {normalO}_{2} \to {normalCO}_{2} + 2 {normalH}_{2} normalO & left Δ H^{0} = - 806 normal normalkJ normal normalmo {normall}^{- 1} \end{matrix}

…”

Section: Reaction Mechanism Of Bimetallic Ni‐based Catalystsmentioning

confidence: 99%

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

et al. 2020

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Catalytic dry reforming of methane (DRM) is a promising way for renewable syngas production due to the utilization of both CO2 and CH4 greenhouse gases. Current approaches were made to improve the catalytic activity and coke resistance by introducing a second metal into the Ni‐based catalytic system. This bimetallic catalytic system showed a significant improvement in coke resistance due to the synergistic effect of both metals towards the reaction. This review summarizes recent developments in bimetallic catalysts in DRM which focused on the evaluation of catalysts, deactivation studies, and reaction mechanisms of developed bimetallic catalysts.

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true \begin{matrix} left {normalCH}_{4} + {normalCO}_{2} \to 2 normalCO + 2 {normalH}_{2} & left Δ H^{0} = + 247.3 normal normalkJ normal normalmo {normall}^{- 1} \end{matrix}

true \begin{matrix} left {normalCH}_{4} \to normalC + 2 {normalH}_{2} & left Δ H^{0} = + 75 normal normalkJ normal normalmo {normall}^{- 1} \end{matrix}

true \begin{matrix} left 2 normalCO \to normalC + {normalCO}_{2} & left Δ H^{0} = - 172 normal normalkJ normal normalmo {normall}^{- 1} \end{matrix}

true \begin{matrix} left {normalCH}_{4} + 2 {normalO}_{2} \to {normalCO}_{2} + 2 {normalH}_{2} normalO & left Δ H^{0} = - 806 normal normalkJ normal normalmo {normall}^{- 1} \end{matrix}

…”

Section: Reaction Mechanism Of Bimetallic Ni‐based Catalystsmentioning

confidence: 99%

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

et al. 2020

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“…Among the non-noble metal-based catalysts, Ni-based catalysts are most practical choice in favor of their high catalytic activity, low cost and large abundance [10,[23][24][25]. However, Ni-based catalysts have a critical drawback as DRM catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…The formation of bimetallic states with noble-metals and other transition metal has been extensively studied [18][19][20]25], and it has also been demonstrated that catalytic performances of Ni catalysts are strongly related to the basicity of metal-oxide supports [26][27][28][29][30][31][32][33][34]. In addition, many scientific results indicate that coke formation on Ni catalysts is less favored when their size are in a nano meter scale [35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Seo

2018

Catalysts

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Two major green house gases (CO 2 and CH 4 ) can be converted into useful synthetic gas (H 2 and CO) during dry reforming of methane (DRM) reaction, and a lot of scientific efforts has been made to develop efficient catalysts for dry reforming of methane (DRM). Noble metal-based catalysts can effectively assist DRM reaction, however they are not economically viable. Alternatively, non-noble based catalysts have been studied so far, and supported Ni catalysts have been considered as a promising candidate for DRM catalyst. Main drawback of Ni catalysts is its catalytic instability under operating conditions of DRM (>700 • C). Recently, it has been demonstrated that the appropriate choice of metal-oxide supports can address this issue since the chemical and physical of metal-oxide supports can prevent coke formation and stabilize the small Ni nanoparticles under harsh conditions of DRM operation. This mini-review covers the recent scientific findings on the development of supported Ni catalysts for DRM reaction, including the synthetic methods of supported Ni nanoparticles with high sintering resistance.

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“…Several methods have been demonstrated that can enhance carbon resistance effectively that include new preparation methods, bimetallic synergistic effect, and the strong metal–support interaction . Recently, Ni@oxide core–shell catalysts have been investigated because of their unique structure that can eliminate the sintering of Ni and carbon formation effectively .…”

Section: Introductionmentioning

confidence: 99%

Sandwich‐Like Silica@Ni@Silica Multicore–Shell Catalyst for the Low‐Temperature Dry Reforming of Methane: Confinement Effect Against Carbon Formation

2017

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We synthesize a new sandwich‐like silica@Ni@silica multicore–shell catalyst. Firstly, Ni phyllosilicate (NiPS) is supported on silica nanospheres by a simple ammonia evaporation method. Then NiPS is coated with a layer of mesoporous silica to obtain a core–shell NiPS@silica structure by the hydrolysis of tetraethylorthosilicate (TEOS). The thickness of the shell can be tuned by varying the amount of TEOS. After calcination and H2 reduction at high temperature, multiple small Ni nanoparticles (≈6 nm) are generated and supported on the inner silica core but also encapsulated within the outer mesoporous silica shell. This silica@Ni@silica multicore–shell catalyst shows a high and stable conversion (≈60 %, gas hourly space velocity=60 000 mL h−1 gcat−1) for the dry reforming of methane (DRM) at 600 °C, whereas pristine NiPS deactivates quickly because of heavy carbon formation. We investigated the spent catalysts by using thermogravimetric analysis and TEM and found that there is almost no carbon formation for this new multicore–shell catalyst. Compared with a conventional Ni@silica core–shell catalyst, our multicore–shell catalyst is much easier to synthesize and the process does not require any toxic organic solvents. We believe that this strategy to make a multicore–shell catalyst can be applied to more nanomaterials and extended to other catalytic reactions besides DRM.

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A Review on Bimetallic Nickel‐Based Catalysts for CO₂ Reforming of Methane

Cited by 422 publications

References 181 publications

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Sandwich‐Like Silica@Ni@Silica Multicore–Shell Catalyst for the Low‐Temperature Dry Reforming of Methane: Confinement Effect Against Carbon Formation

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A Review on Bimetallic Nickel‐Based Catalysts for CO2 Reforming of Methane

Cited by 422 publications

References 181 publications

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Sandwich‐Like Silica@Ni@Silica Multicore–Shell Catalyst for the Low‐Temperature Dry Reforming of Methane: Confinement Effect Against Carbon Formation

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A Review on Bimetallic Nickel‐Based Catalysts for CO₂ Reforming of Methane