Morphology and performance of Cu/ZnO based catalyst: Comparison between Al2O3 and SiC support

Halim, N S Abd; Zabidi, Noor Asmawati Mohd; Tasfy, Sara Faiz Hanna; Shaharun, Maizatul Shima

doi:10.1063/1.4968073

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…Díez-Ramírez et al have presented an interesting example of trimetallic catalyst 37.5:12.5:50 Pd:Cu:Zn (mol %) supported on β-SiC pellets for the CO 2 hydrogenation to methanol (CH 3 OH) at ambient pressure. , Previous studies on the textural and morphological properties of oxide/oxide-free supports for bimetallic Cu–Zn-based active phases to be employed for the selective CO 2 hydrogenation to methanol prompted the authors to explore the high thermal conductivity, mechanical strength, and chemical inertness of β-SiC matrices as catalyst supports for the hydrogenation reactions. In particular, the chemical inertness of SiC was crucial to avoid undesired interactions between the support and the metal active phase while maximizing those synergistic interactions between different metal components in the active phase.…”

Section: Catalytic Applicationsmentioning

confidence: 99%

Porous Silicon Carbide (SiC): A Chance for Improving Catalysts or Just Another Active-Phase Carrier?

et al. 2021

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There is an obvious gap between efforts dedicated to the control of chemicophysical and morphological properties of catalyst active phases and the attention paid to the search of new materials to be employed as functional carriers in the upgrading of heterogeneous catalysts. Economic constraints and common habits in preparing heterogeneous catalysts have narrowed the selection of active-phase carriers to a handful of materials: oxide-based ceramics (e.g. Al2O3, SiO2, TiO2, and aluminosilicates–zeolites) and carbon. However, these carriers occasionally face chemicophysical constraints that limit their application in catalysis. For instance, oxides are easily corroded by acids or bases, and carbon is not resistant to oxidation. Therefore, these carriers cannot be recycled. Moreover, the poor thermal conductivity of metal oxide carriers often translates into permanent alterations of the catalyst active sites (i.e. metal active-phase sintering) that compromise the catalyst performance and its lifetime on run. Therefore, the development of new carriers for the design and synthesis of advanced functional catalytic materials and processes is an urgent priority for the heterogeneous catalysis of the future. Silicon carbide (SiC) is a non-oxide semiconductor with unique chemicophysical properties that make it highly attractive in several branches of catalysis. Accordingly, the past decade has witnessed a large increase of reports dedicated to the design of SiC-based catalysts, also in light of a steadily growing portfolio of porous SiC materials covering a wide range of well-controlled pore structure and surface properties. This review article provides a comprehensive overview on the synthesis and use of macro/mesoporous SiC materials in catalysis, stressing their unique features for the design of efficient, cost-effective, and easy to scale-up heterogeneous catalysts, outlining their success where other and more classical oxide-based supports failed. All applications of SiC in catalysis will be reviewed from the perspective of a given chemical reaction, highlighting all improvements rising from the use of SiC in terms of activity, selectivity, and process sustainability. We feel that the experienced viewpoint of SiC-based catalyst producers and end users (these authors) and their critical presentation of a comprehensive overview on the applications of SiC in catalysis will help the readership to create its own opinion on the central role of SiC for the future of heterogeneous catalysis.

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Section: Catalytic Applicationsmentioning

confidence: 99%

Porous Silicon Carbide (SiC): A Chance for Improving Catalysts or Just Another Active-Phase Carrier?

et al. 2021

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“…[22,[30][31][32][33][34][35][36]. However, the use of β-SiC in this reaction has not been widely reported in the literature [37], even though it has shown excellent properties in many reactions [38][39][40][41][42][43]. β-SiC exhibits high thermal conductivity and mechanical strength, low specific weight and chemical inertness, so that this support is appropriate to avoid interactions with the active phases.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Pd/Cu ratio in Pd-Cu-Zn/SiC catalysts for the CO 2 hydrogenation to methanol at atmospheric pressure

Díez-Ramírez

Díaz

Sánchez

et al. 2017

Journal of CO2 Utilization

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Morphology and performance of Cu/ZnO based catalyst: Comparison between Al2O3 and SiC support

Cited by 2 publications

References 10 publications

Porous Silicon Carbide (SiC): A Chance for Improving Catalysts or Just Another Active-Phase Carrier?

Porous Silicon Carbide (SiC): A Chance for Improving Catalysts or Just Another Active-Phase Carrier?

Optimization of the Pd/Cu ratio in Pd-Cu-Zn/SiC catalysts for the CO 2 hydrogenation to methanol at atmospheric pressure

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