Zeolite supported Pd catalysts for the complete oxidation of methane: A critical review

Hai Ying Chen, Jing Lu, Joseph M. Fedeyko, Agnes Raj

Research output: Contribution to journalReview articlepeer-review

41 Scopus citations

Abstract

This review summarizes the recent literature reports on the development of zeolite supported Pd catalysts for the complete oxidation of methane. In-depth analysis reveals that different types of zeolite framework structures, regardless of the dimensionality, pore opening structure, and channel size, have little influence on the methane oxidation activity or the on-stream stability of the supported Pd catalysts. In contrast, the Si/Al ratio of a zeolite support plays a critical role. Both the catalytic activity and the on-stream stability of a Pd/zeolite catalyst increase with the increase of the Si/Al ratio. Catalysts supported on siliceous zeolites consistently show excellent light-off activity and remarkable on-stream stability whether in a dry or wet feed. Silanol nest defect sites in a siliceous zeolite are proposed to be the anchoring sites promoting the formation and minimizing the sintering of finely dispersed Pd nanoparticles. Remaining challenges in overcoming the sulfur poisoning effect are discussed.

Original languageEnglish
Article number118534
JournalApplied Catalysis A: General
Volume633
DOIs
StatePublished - Mar 5 2022

Funding

HYC is grateful for the financial support from the DOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (VTO) and for the guidance of Ken Howden, Kevin Stork, Siddiq Khan, and Gurpreet Singh at DOE VTO.

Keywords

  • Methane oxidation
  • Pd catalysts
  • PdO nanoparticles
  • Silanol nest defect sites
  • Siliceous zeolite
  • Zeolite support

Fingerprint

Dive into the research topics of 'Zeolite supported Pd catalysts for the complete oxidation of methane: A critical review'. Together they form a unique fingerprint.

Cite this