Highly dispersed Ce(Ⅲ) species on silica and alumina as new photocatalysts for non-oxidative direct methane coupling

摘要

Highly dispersed cerium oxide species on silica and alumina, which mainly exist as Ce(Ⅲ) species, promote non-oxidative direct methane coupling photocatalytically around room temperature, while Ce(Ⅳ) species as CeO_2 particles do not behave as a catalyst for this reaction.