Silica-based micro- and mesoporous catalysts for dry reforming of methane

Li, Ziwei; Das, Sonali; Hongmanorom, Plaifa; Dewangan, Nikita; Wai, Ming Hui; Kawi, Sibudjing

doi:10.1039/c8cy00622a

Cited by 133 publications

(68 citation statements)

References 127 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They were the species at G band (~1580 cm −1 ) and D band (~1330 cm −1 ), which are related to the graphitic carbon and its defective structures, respectively ( 46 ). Therefore, from the perspective of material design, the CaO-Ni bifunctional sorbent-catalyst developed in this study has room to be improved in terms of the carbon-resistant ability, which could be achieved by manipulating the particle size of metallic Ni ( 47 ) and/or using the bimetallic Ni-based catalysts ( 48 ).…”

Section: Resultsmentioning

confidence: 99%

Calcium-looping reforming of methane realizes in situ CO ₂ utilization with improved energy efficiency

et al. 2019

View full text Add to dashboard Cite

Closing the anthropogenic carbon cycle is one important strategy to combat climate change, and requires the chemistry to effectively combine CO2 capture with its conversion. Here, we propose a novel in situ CO2 utilization concept, calcium-looping reforming of methane, to realize the capture and conversion of CO2 in one integrated chemical process. This process couples the calcium-looping CO2 capture and the CH4 dry reforming reactions in the CaO-Ni bifunctional sorbent-catalyst, where the CO2 captured by CaO is reduced in situ by CH4 to CO, a reaction catalyzed by catalyzed by the adjacent metallic Ni. The process coupling scheme exhibits excellent decarbonation kinetics by exploiting Le Chatelier’s principle to shift reaction equilibrium through continuous conversion of CO2, and results in an energy consumption 22% lower than that of conventional CH4 dry reforming for CO2 utilization. The proposed CO2 utilization concept offers a promising option to recycle carbon directly at large CO2 stationary sources in an energy-efficient manner.

show abstract

Section: Resultsmentioning

confidence: 99%

Calcium-looping reforming of methane realizes in situ CO ₂ utilization with improved energy efficiency

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Zeolite materials were deemed as idea supports to confine metal particles, owing to the diverse porosities, controllable synthesis process, and large surface areas . The encapsulating Ni NPs in mesoporous zeolites, thus enhancing sintering resistance, has been reported by several groups . For example, Gong et al designed a nickel phyllosilicate nanotubes catalyst for ethanol steam reforming, which showed high thermal stability of nickel nanoparticles at 650°C due to the confinement effect of phyllosilicate nanotubes, thus improving the stability and inhibiting carbon deposition .…”

Section: Introductionmentioning

confidence: 99%

“…[27][28][29][30] The encapsulating Ni NPs in mesoporous zeolites, thus enhancing sintering resistance, has been reported by several groups. 17,[31][32][33][34][35][36][37][38][39] For example, Gong et al…”

Section: Introductionmentioning

confidence: 99%

Selective steam reforming of n‐dodecane over stable subnanometric NiPt clusters encapsulated in Silicalite‐1 zeolite

et al. 2020

View full text Add to dashboard Cite

Multimetallic nanocatalysts have attracted increasing attention for steam reforming owing to highly exposed active sites, but often suffering from severe sintering. Herein, we design subnanometric Ni‐Pt bimetal clusters (ca. 1.7 nm) encapsulated in Silicalite‐1 zeolite (2Ni0.5Pt@S‐1) through ligand‐stabilized method to prevent sintering by fixing the metal into microporous channels. In the steam reforming of n‐dodecane test, 2Ni0.5Pt@S‐1 gave an excellent activity and stability with a decrease of conversion only 4% at 600°C for 4 hr, which was about a quarter that of 2Ni0.5Pt/S‐1 synthesized by co‐impregnation method, ascribing to superior sinter‐resistance of encapsulation structure. Moreover, 2Ni0.5Pt@S‐1 exhibited a higher H2 selectivity up to 69.9% than that of 2Ni0.5Pt/S‐1 (64.4%), owing to suppressed methanation reaction based on subnanometric clusters. Shape‐selective steam reforming of n‐dodecane and ofm‐xylene was also observed, because of m‐xylene could hardly diffuse into the zeolite channels due to its bulky molecular size, further preventing potential deactivation by tars in reforming process.

show abstract

“…This is because syngas is a valuable feedstock to produce high purity hydrogen through water gas shift reaction (WGSR), methanol and other liquid fuels as well as considerable chemicals such as ammonia and acetic acid via Fischer‐Tropsch synthesis process. Syngas can be produced from one or the combination of some of the hydrocarbon reforming reactions (bi‐reforming or tri‐reforming) such as carbon dioxide (dry) reforming of methane (DRM), steam reforming of methane (SRM), partial oxidation of methane (POM), and steam reforming of larger hydrogen molecules such as toluene (SRT) (Table ). Combined reforming reactions can be used to tune the composition of syngas because different H 2 /CO ratio is usually obtained from different reforming reactions.…”

Section: Introductionmentioning

confidence: 99%

Sintering and Coke Resistant Core/Yolk Shell Catalyst for Hydrocarbon Reforming

Wang

Kawi

2018

ChemCatChem

Self Cite

View full text Add to dashboard Cite

Syngas/hydrogen production via hydrocarbon reforming reactions is crucial. Whereas, they need high reaction temperature to obtain economically feasible hydrocarbon conversions, which renders the active and cheap transition metal based catalysts easy to be sintered, leading to the high carbon deposition rate and gradual degradation of catalytic performance. Therefore, developing sintering and carbon resistant catalysts becomes one of the most important issues for these reforming reactions to be industrially applied. Designing catalysts with core/yolk shell structure turns out to be one of the most effective strategies to solve this issue. Herein, recent progress which has been made in the synthesis method for core/yolk shell catalysts with different shell materials such as SiO2, zeolite, CeO2 and Al2O3 is summarized. Additionally, specific applications of these core/yolk catalysts for various hydrocarbon reforming reactions such as dry reforming, steam reforming and methane oxidation are reviewed with the emphasis on revealing the reasons leading to their outstanding catalytic performance. Lastly, possible research directions in core/yolk shell catalysts are proposed.

show abstract

Silica-based micro- and mesoporous catalysts for dry reforming of methane

Abstract: With wide availability, high thermal stability and high specific surface area, silica-based micro- and mesoporous materials show promising performance for dry reforming of methane reaction, boosting efficient and sustainable utilization of greenhouse gases.

Cited by 133 publications

References 127 publications

Calcium-looping reforming of methane realizes in situ CO ₂ utilization with improved energy efficiency

Calcium-looping reforming of methane realizes in situ CO ₂ utilization with improved energy efficiency

Selective steam reforming of n‐dodecane over stable subnanometric NiPt clusters encapsulated in Silicalite‐1 zeolite

Sintering and Coke Resistant Core/Yolk Shell Catalyst for Hydrocarbon Reforming

Contact Info

Product

Resources

About

Silica-based micro- and mesoporous catalysts for dry reforming of methane

Abstract: With wide availability, high thermal stability and high specific surface area, silica-based micro- and mesoporous materials show promising performance for dry reforming of methane reaction, boosting efficient and sustainable utilization of greenhouse gases.

Cited by 133 publications

References 127 publications

Calcium-looping reforming of methane realizes in situ CO 2 utilization with improved energy efficiency

Calcium-looping reforming of methane realizes in situ CO 2 utilization with improved energy efficiency

Selective steam reforming of n‐dodecane over stable subnanometric NiPt clusters encapsulated in Silicalite‐1 zeolite

Sintering and Coke Resistant Core/Yolk Shell Catalyst for Hydrocarbon Reforming

Contact Info

Product

Resources

About

Calcium-looping reforming of methane realizes in situ CO ₂ utilization with improved energy efficiency

Calcium-looping reforming of methane realizes in situ CO ₂ utilization with improved energy efficiency