Chemical looping partial oxidation over FeWO /SiO2 catalysts

Li, Rui; Chen, Pei; Zhang, Xianhua; Chen, Sai; Li, Hongfang; Zeng, Liang; Mu, Rentao; Gong, Jinlong

doi:10.1016/s1872-2067(20)63544-6

Cited by 28 publications

(9 citation statements)

References 54 publications

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“…An extensively investigated topics is methane to syngas/H 2 conversion. 95,[109][110][111][112][113][114][115][116][117]123,[125][126][127]130,136,185,[193][194][195][196][197][198][199][200][201][202][203][204][205][206][207][208] A few other studies explored a phase transition sorbent concept where a single mixed oxide particle combines the function of a redox oxide (for oxygen separation), a carbonate sorbent (for CO 2 separation), and a catalyst (to catalyze chemical reactions). 95,123,130,197,198,[209][210][211] For instance, a recent study adopted the chemical looping strategy to selectively oxidize ammonia with excellent NO selectivity for nitric acid production.…”

Section: Discussionmentioning

confidence: 99%

Mixed oxides as multi-functional reaction media for chemical looping catalysis

Liu

2023

Chem. Commun.

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Section: Discussionmentioning

confidence: 99%

Mixed oxides as multi-functional reaction media for chemical looping catalysis

Liu

2023

Chem. Commun.

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“…Another way to improve the catalytic performance is to incorporate the active sites into the specific composite metal oxide structure. , Generally, the composite metal oxides are a mixture of multiple metal oxides with specific crystal structure. , Thus, they could provide various kinds of active sites to achieve high catalytic performance. Gong and co-workers described the design of an FeWO x -based oxygen carrier for partial chemical reforming in Figure a . Thermodynamic screening and kinetic analyses showed that total methane conversion and syngas yield could be increased dramatically compared to the unmodified WO 3 /SiO 2 , thereby enabling chemical looping of partial oxidation of methane (CLPOM) with 62% methane conversion, 93% CO gas phase selectivity, and 94% H 2 selectivity.…”

Section: Transport Phenomena In Structured Catalystsmentioning

confidence: 99%

“…Gong and co-workers described the design of an FeWO x - based oxygen carrier for partial chemical reforming in Figure 26a. 299 Thermodynamic screening and kinetic analyses showed that total methane conversion and syngas yield could be increased dramatically compared to the unmodified WO 3 /SiO 2 , thereby enabling chemical looping of partial oxidation of methane (CLPOM) with 62% methane conversion, 93% CO gas phase selectivity, and 94% H 2 selectivity. Moreover, FeWO x / SiO 2 demonstrated excellent catalytic performance without catalyst deactivation at 900 °C.…”

Section: Mixed Metal Oxidesmentioning

confidence: 99%

Structured Catalysts and Catalytic Processes: Transport and Reaction Perspectives

Pei,

Chen,

et al. 2024

Chem. Rev.

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The structure of catalysts determines the performance of catalytic processes. Intrinsically, the electronic and geometric structures influence the interaction between active species and the surface of the catalyst, which subsequently regulates the adsorption, reaction, and desorption behaviors. In recent decades, the development of catalysts with complex structures, including bulk, interfacial, encapsulated, and atomically dispersed structures, can potentially affect the electronic and geometric structures of catalysts and lead to further control of the transport and reaction of molecules. This review describes comprehensive understandings on the influence of electronic and geometric properties and complex catalyst structures on the performance of relevant heterogeneous catalytic processes, especially for the transport and reaction over structured catalysts for the conversions of light alkanes and small molecules. The recent research progress of the electronic and geometric properties over the active sites, specifically for theoretical descriptors developed in the recent decades, is discussed at the atomic level. The designs and properties of catalysts with specific structures are summarized. The transport phenomena and reactions over structured catalysts for the conversions of light alkanes and small molecules are analyzed. At the end of this review, we present our perspectives on the challenges for the further development of structured catalysts and heterogeneous catalytic processes.

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“…However, its performance and structure gradually changed during ten cycles, which needed further improvement on the stability. In order to improve the activity of the tungsten oxide oxygen carrier and maintain the structural stability of the oxygen carrier during cycling, Liu et al [206] prepared the Fe y WO x /SiO 2 oxygen carrier and applied it to CLR. The addition of iron greatly improved the performance of the oxygen carrier, and during the reduction process, the strong interaction between iron and tungsten resulted in the formation of the iron-tungsten alloy so that no phase separation occurred, ensuring structural stability.…”

Section: Other Oxygen Carriermentioning

confidence: 99%

Chemical looping reforming: process fundamentals and oxygen carriers

et al. 2022

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Chemical looping reforming (CLR) provides a viable process intensification approach for clean and efficient syngas production from carbonaceous fuel with inherent gas–gas separation. The rational design of metal oxide-based oxygen carriers and the scale-up of associated CLR reactor systems play important roles in CLR process development. This review first introduces the concept and advantages of CLR as well as its historical development. The process fundamentals, including basic schemes, reaction stoichiometry, thermodynamics, kinetics and reactor system design, are reviewed. The integral approach for CLR process development is illustrated, showing that the design and compatibility of oxygen carriers and reactor systems are critical for CLR performance. The reaction principle during the reduction of oxygen carriers is discussed, followed by strategies for improving the redox reactivity and stability. We further review and discuss the latest exciting advances on this subject with the purpose of illustrating factors that govern fundamental mechanisms in the redox reaction chemistry of oxygen carriers and their design principles for sustained chemical looping reactor applications. It is expected that these new advances will inspire more effective oxygen carriers and efficient reactor systems for the development and deployment of various CLR processes.

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Chemical looping partial oxidation over FeWO /SiO2 catalysts

Cited by 28 publications

References 54 publications

Mixed oxides as multi-functional reaction media for chemical looping catalysis

Mixed oxides as multi-functional reaction media for chemical looping catalysis

Structured Catalysts and Catalytic Processes: Transport and Reaction Perspectives

Chemical looping reforming: process fundamentals and oxygen carriers

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