A review on state-of-the-art catalysts for methane partial oxidation to syngas production

Siang, Tan Ji; Jalil, Aishah Abdul; Liew, Shi Yan; Owgi, A.H.K.; Rahman, A.F.A.

doi:10.1080/01614940.2022.2072450

Cited by 5 publications

(2 citation statements)

References 162 publications

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“…Owing to the development of mixed metal oxides on the catalyst surface, the catalyst exhibits remarkable catalytic activity and resistance to deactivation. Therefore, it renders the SAPO-5 a viable substitute for existing commercially accessible supports, although its high cost continues to pose a significant challenge [51,52].…”

Section: H 2 /Co Ratiomentioning

confidence: 99%

Promoter Impact on 5Ni/SAPO-5 Catalyst for H2 Production via Methane Partial Oxidation

Al-Anazi,

Bellahwel,

et al. 2024

Catalysts

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Compared to steam reforming techniques, partial oxidation of methane (POM) is a promising technology to improve the efficiency of synthesizing syngas, which is a mixture of CO and H2. In this study, partial oxidation of methane (POM) was used to create syngas, a combination of CO and H2, using the SAPO-5-supported Ni catalysts. Using the wetness impregnation process, laboratory-synthesized Ni promoted with Sr, Ce, and Cu was used to modify the SAPO-5 support. The characterization results demonstrated that Ni is appropriate for the POM due to its crystalline structure, improved metal support contact, and increased thermal stability with Sr, Ce, and Cu promoters. During POM at 600 °C, the synthesized 5Ni+1Sr/SAPO-5 catalyst sustained stability for 240 min on stream. While keeping the reactants stoichiometric ratio of (CH4:O2 = 2:1), the addition of Sr promoter and active metal Ni to the SAPO-5 increased the CH4 conversion from 41.13% to 49.11% and improved the H2/CO ratio of 3.33. SAPO-5-supported 5Ni+1Sr catalysts have great potential for industrial catalysis owing to their unique combination of several oxides. This composition not only boosts the catalyst’s activity but also promotes favorable physiochemical properties, resulting in improved production of syngas. Syngas is a valuable intermediate in various industrial processes.

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Section: H 2 /Co Ratiomentioning

confidence: 99%

Promoter Impact on 5Ni/SAPO-5 Catalyst for H2 Production via Methane Partial Oxidation

Al-Anazi,

Bellahwel,

et al. 2024

Catalysts

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“…The coupling of thermo-catalytic process with photocatalysis has been proposed as a solution to increase selectivity and reduce operating temperature for PO processes [19], but optimal catalysts for this application are also yet to be found. Despite recent advancements in the development of novel catalysts, catalytic PO processes are generally still greatly hindered by carbon deposition, which causes very rapid catalyst deactivation and remains a major obstacle to the development of the process on a large scale [20]. The influence of the cracking reaction can also increase the product syngas H 2 /CO ratio significantly above the stoichiometric 2, which renders the product syngas unsuitable for direct implementation for processes such as methanol synthesis, requiring again costly post-treatment and the adjustment of the ratio to the desired value.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Process Conditions for H2 Production by Chemical Looping Reforming

Storione,

Boscherini,

Miccio

et al. 2024

Energies

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A syngas production process was studied cyclically, exploiting the redox properties of Ce-based oxygen carriers. The two steps of the looping cycle were investigated through thermogravimetric analysis and fixed bed experiments. While TGA experiments were focused on the identification of the optimal temperatures ranges for methane partial oxidation (900–1000 °C) and carrier regeneration (400–900 °C), fixed bed testing was performed isothermally (at 900 or 950 °C), with a 10% CH4 feed stream in N2 to investigate material stability and cyclic performance reproducibility. The effect of the process times on carbon deposition, specific syngas yields, and selectivity was inspected, together with the investigation of best conditions to fully regenerate the carrier, adjust the syngas final ratio, and to ensure stable performances. The obtained results ensured the possibility to work in fully isothermal operations, with CH4 conversion of up to 38% and specific yields of syngas per mass of O2 carrier between 4.0–6.8 mmol∙g−1, preserved even across cycles, thus paving the path to the development of alternative and effective processes for syngas production. Under the operating conditions of the lab-scale experiment, an effective reforming time was 20 min, corresponding to 1.16 times of the characteristic time of reaction kinetics at 950 °C.

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Theoretical insights into the size effect of α-Fe2O3 oxygen carrier on chemical looping reforming of methane

Zhang,

Su,

et al. 2024

Chemical Engineering Science

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A review on state-of-the-art catalysts for methane partial oxidation to syngas production

Cited by 5 publications

References 162 publications

Promoter Impact on 5Ni/SAPO-5 Catalyst for H2 Production via Methane Partial Oxidation

Promoter Impact on 5Ni/SAPO-5 Catalyst for H2 Production via Methane Partial Oxidation

Improvement of Process Conditions for H2 Production by Chemical Looping Reforming

Theoretical insights into the size effect of α-Fe2O3 oxygen carrier on chemical looping reforming of methane

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