Promoter impact on 5Ni/SAPO-5 catalyst for H2 production via methane partial oxidation

Abdulaziz Al-Anazi, Omer Bellahwel, Kavitha C., Jehad Abu-Dahrieh*, Ahmed A. Ibrahim, S. Santhosh, Ahmed E. Abasaeed, Anis H. Fakeeha, Ahmed S. Al-Fatesh*

*Corresponding author for this work

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Abstract

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.

Original languageEnglish
Article number316
Number of pages21
JournalCatalysts
Volume14
Issue number5
DOIs
Publication statusPublished - 10 May 2024

Keywords

  • 5Ni+1Sr/SAPO-5
  • crystalline structure
  • methane
  • partial oxidation
  • syngas

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