Enhanced Toluene Combustion over Cryptomelane Catalysts: Influence of Cu Doping on Physicochemical Properties and Catalytic Performance.

ABSTRACT: The catalytic combustion of toluene over cryptomelane and Cu-doped cryptomelane catalysts was investigated to evaluate the effect of copper incorporation on catalytic performance. It was found that a small addition of Cu into the cryptomelane framework resulted in a notable decrease in the temperature of 90% toluene conversion. To elucidate the structure-activity relationship, the catalysts were comprehensively characterized using XRD, FTIR, SEM-EDS, N₂ physisorption, XRF, XPS, O₂-TPD, and H₂-TPR techniques. The results revealed that Cu doping modifies the physicochemical properties of cryptomelane, most importantly the share of lattice and surface oxygen species, enhancing redox behavior and oxygen mobility, which in turn improves catalytic activity. For t

SUBMITTER: Mokrzycki J 

PROVIDER: S-EPMC12786640 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature