Effect of Ce/Zr ratio on the performance of Pt/CeZrO2/Al2O3 catalysts for methane partial oxidation

Silva, P.P.; Silva, F.A.; Portela, L.; Mattos, Lisiane V.; Noronha, Fábio B.; Hori, Carla Eponina

doi:10.1016/j.cattod.2005.07.004

Cited by 65 publications

(28 citation statements)

References 39 publications

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“…The Ce/Zr composition is a factor that has a strong influence on the catalytic performance of ceria-zirconia (CZ) in several types of reactions such as the reduction in three-way catalysts [160], the methane partial oxidation, and ethanol/methane reforming [161][162][163].…”

Section: Silica-supported Nickelmentioning

confidence: 99%

Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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CO 2 methanation is a well-known reaction that is of interest as a capture and storage (CCS) process and as a renewable energy storage system based on a power-to-gas conversion process by substitute or synthetic natural gas (SNG) production. Integrating water electrolysis and CO 2 methanation is a highly effective way to store energy produced by renewables sources. The conversion of electricity into methane takes place via two steps: hydrogen is produced by electrolysis and converted to methane by CO 2 methanation. The effectiveness and efficiency of power-to-gas plants strongly depend on the CO 2 methanation process. For this reason, research on CO 2 methanation has intensified over the last 10 years. The rise of active, selective, and stable catalysts is the core of the CO 2 methanation process. Novel, heterogeneous catalysts have been tested and tuned such that the CO 2 methanation process increases their productivity. The present work aims to give a critical overview of CO 2 methanation catalyst production and research carried out in the last 50 years. The fundamentals of reaction mechanism, catalyst deactivation, and catalyst promoters, as well as a discussion of current and future developments in CO 2 methanation, are also included.

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Section: Silica-supported Nickelmentioning

confidence: 99%

Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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“…Since the OSC of the support was not affected by Pt dispersion, the increased methane decomposition led to imbalance in the OSC and thus carbon deposition, leading to deactivation. In contrast, Silva et al [93,94] found that 1.5 wt% Pt/Ce0.75Zr0.25O2-Al2O3 exhibited lower activity under the same conditions. The lower activity of the catalyst was attributed to lower surface coverage and OSC.…”

Section: Catalytic Partial Oxidation Of Methane (Cpom)mentioning

confidence: 89%

Hydrogen production from simple alkanes and oxygenated hydrocarbons over ceria–zirconia supported catalysts: Review

Nahar

Dupont

2014

Renewable and Sustainable Energy Reviews

102

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The use of ceria-zirconia based catalysts in hydrogen production from simple alkanes and oxygenated hydrocarbons for the processes of steam reforming (SR), autothermal reforming ('ATR'), catalytic partial oxidation ('CPO'), and dry reforming ('DR') are reviewed in this paper. Along with preparation methods, the effects of operating conditions like molar steam to carbon ratio, oxygen to carbon ratio, and temperature on the performance of hydrogen production from methane, acetic acid, ethanol, and glycerol were examined. SR and ATR of these feedstocks over ceria-zirconia supports have been widely investigated. In comparison the utilization of these supports in the CPO and DR processes has been investigated mainly for methane as compared to oxygenated hydrocarbons. Ce-rich supports were reported to be effective in hydrogen from SR and ATR of ethanol and glycerol and in SMR in the 'low' temperature range (500-600 °C), whereas zirconium-rich supports exhibited higher catalytic activity in the 'high' temperature range (700-800 °C). In the case of DR, Ce-rich supports were effective at high temperature. The methods of preparation of the supports/catalyst are shown to affect the surface area (catalyst/support), crystallite size of (active metal/support), reducibility and dispersion of the active metal, thus affecting performance of the catalyst.

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“…For example, addition of small amounts of noble metals such as Pt, Rh can improve the catalyst performance and coking resistance [56]. Another effective way is to prepare a catalyst with high oxygen storage capacity (OSC) materials such as CeO2, for effective carbon removal via gasification by lattice oxygen [57]. In many catalytic applications, OSC materials renders the surface by oxidizing the carbon species.…”

Section: Methane Dry Reforming and Partial Oxidation To Syngasmentioning

confidence: 99%

“…The main causes for the catalyst deactivation in processing CBM are mainly fouling of the surfaces by ash (Na, K, Ca, and sulphates), chemical poisoning by sulfur and As compounds, hydrothermal sintering and fly ash erosion and abrasion [55]. Developing a catalyst which is sulfur resistant can be achieved by using high oxygen storage materials (such as CeO2, ZrO2), which reduce also the coke formation [57,328].…”

Section: Considerations On Catalyst Durability In Utilization Of Orgamentioning

confidence: 99%

Utilization of Volatile Organic Compounds as an Alternative for Destructive Abatement

et al. 2015

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Abstract:The treatment of volatile organic compounds (VOC) emissions is a necessity of today. The catalytic treatment has already proven to be environmentally and economically sound technology for the total oxidation of the VOCs. However, in certain cases, it may also become economical to utilize these emissions in some profitable way. Currently, the most common way to utilize the VOC emissions is their use in energy production. However, interesting possibilities are arising from the usage of VOCs in hydrogen and syngas production. Production of chemicals from VOC emissions is still mainly at the research stage. However, few commercial examples exist. This review will summarize the commercially existing VOC utilization possibilities, present the utilization applications that are in the research stage and introduce some novel ideas related to the catalytic utilization possibilities of the VOC emissions. In general, there exist a vast number of possibilities for VOC OPEN ACCESSCatalysts 2015, 5 1093 utilization via different catalytic processes, which creates also a good research potential for the future.

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Effect of Ce/Zr ratio on the performance of Pt/CeZrO2/Al2O3 catalysts for methane partial oxidation

Cited by 65 publications

References 39 publications

Supported Catalysts for CO2 Methanation: A Review

Supported Catalysts for CO2 Methanation: A Review

Hydrogen production from simple alkanes and oxygenated hydrocarbons over ceria–zirconia supported catalysts: Review

Utilization of Volatile Organic Compounds as an Alternative for Destructive Abatement

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