Honeycomb catalyst body
AssigneeNGK Insulators, Ltd.
InventorsHiroyuki Suenobu, Shogo Hirose
Life of this patent
Estimating the term…
Abstract
The honeycomb catalyst body is equipped with a honeycomb structure body having partition walls that define a plurality of cells extending from a first end face as one of the end faces to a second end face as the other end face and serving as through channels of a fluid. The partition walls each have a base layer containing from 50 to 90 mass % of zeolite and a coat layer with which the surface of the base layer 11 is coated with a thickness of from 1 to 50 μm. The coat layer is either a coat layer (A) containing from 1 to 5 mass % vanadia and titania or a coat layer (B) containing from 1 to 5 mass % vanadia and a composite oxide of titania and tungsten oxide.
Claims9
A honeycomb catalyst body comprising:
- a honeycomb structural body having partition walls that define a plurality of cells extending from a first end face as one of the end faces to a second end face as the other end face, and serving as through channels of a fluid,
- the partition walls each having a support layer composed of 50 mass % or more of ceramic, an intermediate layer with which the surface of the support layer is coated and that contains from 50 to 95 mass % of zeolite, and a coat layer with which the surface of the intermediate layer is coated, and
- the coat layer being either a coat layer (A) containing vanadia and titania, or a coat layer (B) containing vanadia and a composite oxide of titania and tungsten oxide, wherein the coat layer contains from 1 to 5 mass % vanadia and has a thickness of from 1 μm to 50 μm.
Dependencies are inferred from the claim text.