초록 ▼

There is disclosed a honeycomb structure. A honeycomb structure includes a pillar-shaped honeycomb structure body having partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, the partition walls are constituted

There is disclosed a honeycomb structure. A honeycomb structure includes a pillar-shaped honeycomb structure body having partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, the partition walls are constituted of a porous body having aggregates and a bonding material to bond the aggregates to one another in a state where pores are formed among the aggregates, the aggregates include molten silica particles, the bonding material includes glass, a content ratio of SiO2 in the porous body is 70 mass % or more, and a thermal expansion coefficient of the porous body at 40 to 800° C. is from 1.5 to 6.0×10−6/° C.

대표청구항 ▼

1. A honeycomb structure comprising a pillar-shaped honeycomb structure body having partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, wherein the partition walls are constituted of a porous body having aggre

1. A honeycomb structure comprising a pillar-shaped honeycomb structure body having partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, wherein the partition walls are constituted of a porous body having aggregates and a bonding material to bond the aggregates to one another in a state where pores are formed among the aggregates, the aggregates include molten silica particles, and the bonding material includes glass, anda content ratio of SiO2 in the porous body is 70 mass % or more, and a thermal expansion coefficient of the porous body at 40 to 800° C. is from 1.5 to 6.0×10−6/° C. 2. The honeycomb structure according to claim 1, wherein porosity of the partition walls is from 10 to 60%. 3. The honeycomb structure according to claim 2, wherein a mass ratio of an alkali metal included in the porous body is from 10 mass % or less. 4. The honeycomb structure according to claim 3, which further comprises a catalyst loaded onto at least one of each surface of the partition walls and each pore formed in the partition walls, and including titanium oxide as a main component and further including tungsten oxide and vanadium oxide. 5. The honeycomb structure according to claim 2, which further comprises a catalyst loaded onto at least one of each surface of the partition walls and each pore formed in the partition walls, and including titanium oxide as a main component and further including tungsten oxide and vanadium oxide. 6. The honeycomb structure according to claim 1, wherein a mass ratio of an alkali metal included in the porous body is from 10 mass % or less. 7. The honeycomb structure according to claim 6, which further comprises a catalyst loaded onto at least one of each surface of the partition walls and each pore formed in the partition walls, and including titanium oxide as a main component and further including tungsten oxide and vanadium oxide. 8. The honeycomb structure according to claim 1, which further comprises a catalyst loaded onto at least one of each surface of the partition walls and each pore formed in the partition walls, and including titanium oxide as a main component and further including tungsten oxide and vanadium oxide.