Cu-Ce Dual-Atom Sites Embedded in Zeolites Boost Resistance to Impurity Interference for Environmental Catalysis.

ABSTRACT: Biodiesel, a carbon-neutral alternative to fossil fuels, plays a vital role in decarbonizing transportation, with global production exceeding 40 million tons annually. However, its widespread use introduces elevated phosphorus and metal cations into vehicle exhaust, severely deactivating Cu-SSZ-13 catalysts for NO_X reduction through pore blockage, framework degradation, and Cu sites loss. We present a Cu-Ce dual-atom catalyst embedded in SSZ-13 that maintains high performance in ammonia-selective catalytic reduction under phosphorus-rich conditions. Ce species, precisely positioned in eight-membered rings, displace P-sensitive [ZCu²⁺OH]⁺ sites, enriching the catalyst with P-tolerant Z₂Cu²⁺ species in six-membered rings. Concurrent Ce─P

SUBMITTER: Chen Y 

PROVIDER: S-EPMC12668302 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature