New Insights into the Decomposition Behavior of NH₄HSO₄ on the SiO₂-Decorated SCR Catalyst and Its Enhanced SO₂-Resistant Ability.

ABSTRACT: This article illustrates the detailed decomposition behavior of NH₄HSO₄ on the TiO₂ and TiO₂-SiO₂ supports, along with the effect of SiO₂ addition on the sulfur resistance of the corresponding V₂O₅-based catalysts. For TiO₂ support, sulfate species selectively occupied its surface basic hydroxyl groups, while Si-OH groups functioned as the main sites for the accommodation of NH₄HSO₄ over the TiO₂-SiO₂ mixed support, enabling its surface sulfate species with higher thermal stability. Compared with NH₄ ⁺ on the TiO₂ surface, NH₄ ⁺ on the TiO₂-SiO₂ mixed support was much easie

SUBMITTER: Ye D 

PROVIDER: S-EPMC6648227 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature