Stabilized metal-exchanged SAPO material
AssigneeBASF SE
InventorsSubramanian Prasad, Martin C. Wende, Jaya L. Mohanan
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Abstract
Described are catalyst materials and catalytic articles comprising a metal exchanged SAPO material comprising a plurality of substitutional sites consisting essentially of Si(4Al) sites and substantially free of Si(0Al) sites. The materials and catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.
Claims16
A selective catalytic reduction catalyst material comprising a metal exchanged, vapor phase ammonium-stabilized SAPO material comprising a plurality of substitutional sites consisting essentially of Si(4Al) sites and substantially free of Si(0Al) sites, wherein the metal is selected from Cu, Fe, Co, Ce and Ni, wherein the catalyst material is effective to catalyze the selective catalytic reduction of nitrogen oxides in the presence of a reductant at temperatures between 200° C. and 600° C.
A selective catalytic reduction catalyst material comprising a metal exchanged, vapor phase ammonium-stabilized non-zeolitic molecular sieve material having the CHA structure type, wherein the metal is selected from the group consisting of Cu, Fe, Co, Ce, and Ni.
A Cu-SAPO-34 material exhibiting a NMR spectra as shown in FIG. 1.
Dependencies are inferred from the claim text.