Oxidative dehydrogenation of n-octane using Ba and Ga-modified faujasite type catalysts prepared by different methods

Ndlela, Siyabonga S.; Friedrich, Holger B.; Cele, Mduduzi N.

doi:10.1007/s10934-020-01008-6

Cited by 2 publications

(3 citation statements)

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“…[24] Ga 2 O 3 also exists two different reduced peaks, and the peak at lower reduced temperature was attributed to the chemisorption of H 2 on Ga + species, the peak at higher temperature around 533 °C corresponds to the reduction of Ga 3 + to Ga + . [25] For other composite oxides samples, the amount of reduction peaks is approximately the same. The overall trend of composite oxides samples in the reduction peak range is that with the increase of Ga 2 O 3 ratio, the reduction temperature gradually shifts to a lower temperature.…”

Section: Resultsmentioning

confidence: 84%

“…The reduction peak above 700 °C is ascribed to reduced bulk ceria [24] . Ga 2 O 3 also exists two different reduced peaks, and the peak at lower reduced temperature was attributed to the chemisorption of H 2 on Ga + species, the peak at higher temperature around 533 °C corresponds to the reduction of Ga 3+ to Ga + [25] . For other composite oxides samples, the amount of reduction peaks is approximately the same.…”

Section: Resultsmentioning

confidence: 85%

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The Catalytic Performance of Ga₂O₃−CeO₂ Composite Oxides over Reverse Water Gas Shift Reaction

et al. 2022

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The conversion of CO 2 into other C1 raw materials is considered to be the best way to solve the greenhouse effect and energy crisis. Reverse water gas shift (RWGS) reaction is the best way to obtain high value-added product raw material syngas and its reactor can be realized in any heavy carbon industry. Here, a series of Ga 2 O 3 À CeO 2 composite oxide catalysts with different ratios of Ga 2 O 3 and CeO 2 were developed by gel sol-gel method. Compared with pure Ga 2 O 3 , CeO 2 , the composite oxides catalysts have smaller grains and exhibit excellent selectivity of CO in RWGS reaction. It was found that Ga 2 O 3 has different reaction intermediates compared with CeO 2 and Ga 2 O 3 À CeO 2 , so it is easy to produce methane under high H 2 conditions, while CeO 2 is beneficial to improve the selectivity of CO. Therefore, Ga 2 O 3 À CeO 2 has the potential to serve as a new and highly selective catalyst for reverse water gas shift reaction.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 85%

The Catalytic Performance of Ga₂O₃−CeO₂ Composite Oxides over Reverse Water Gas Shift Reaction

et al. 2022

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“…A variety of classes of catalysts have been employed for the ODH of n-octane. These include unsupported metal oxides [43][44][45][46], supported metal oxides [47][48][49][50][51][52], mixed metal oxides, zeolites [53,54] and hydroxyapatites [24,[55][56][57]. This review focuses on unsupported and supported metal oxides.…”

Section: Catalysts Usedmentioning

confidence: 99%

Gas-Phase Oxidative Dehydrogenation of n-Octane over Metal Oxide Catalysts: A Review

Ntola,

Shozi

2024

Catalysts

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The oxidative dehydrogenation (ODH) of alkanes, whereby hydrogen is removed to form unsaturated compounds, is an important process, particularly in the petrochemical industry. The ODH of lighter alkanes (C3–C6) is well-reported in the literature, and while there are several reports on the ODH of n-octane (C8), there is no reported review of the important findings in the literature. This review discusses the gas-phase ODH of n-octane occurring at high temperatures (300–550 °C). The mechanisms via which the n-octane ODH of occurs are also briefly discussed. The oxidants (mainly O2 and CO2) and catalysts (supported and unsupported metal oxides) are discussed as well as the effect of these and the temperature on the type of products formed and their various distributions. Furthermore, the review looks at the acid–base and redox properties of the catalysts and how they affect product formation. Some challenges as well as perspectives of the ODH process are also highlighted.

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Oxidative dehydrogenation of n-octane using Ba and Ga-modified faujasite type catalysts prepared by different methods

Cited by 2 publications

References 52 publications

The Catalytic Performance of Ga₂O₃−CeO₂ Composite Oxides over Reverse Water Gas Shift Reaction

The Catalytic Performance of Ga₂O₃−CeO₂ Composite Oxides over Reverse Water Gas Shift Reaction

Gas-Phase Oxidative Dehydrogenation of n-Octane over Metal Oxide Catalysts: A Review

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Oxidative dehydrogenation of n-octane using Ba and Ga-modified faujasite type catalysts prepared by different methods

Cited by 2 publications

References 52 publications

The Catalytic Performance of Ga2O3−CeO2 Composite Oxides over Reverse Water Gas Shift Reaction

The Catalytic Performance of Ga2O3−CeO2 Composite Oxides over Reverse Water Gas Shift Reaction

Gas-Phase Oxidative Dehydrogenation of n-Octane over Metal Oxide Catalysts: A Review

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The Catalytic Performance of Ga₂O₃−CeO₂ Composite Oxides over Reverse Water Gas Shift Reaction

The Catalytic Performance of Ga₂O₃−CeO₂ Composite Oxides over Reverse Water Gas Shift Reaction