Catalyst having a three-dimensional dent structure in the form of a hexagon

Patent metadata

Field	Value
Publication number	US-9757720-B2
Application number	US-201414769324-A
Country	US
Kind code	B2
Filing date	Feb 20, 2014
Priority date	Feb 21, 2013
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A catalyst includes a gas-permeable textile sheet material made of noble-metal-containing wire having a three-dimensional secondary structure produced thereon. The secondary structure is a three-dimensional dent structure including dents arranged adjacent to each other in rows in two spatial directions. The dents are in the form of a hexagon. The dent structure is formed by self-organization in a denting process.

First claim

The invention claimed is:

1. A catalyst comprising:
a gas-permeable textile sheet structure composed of noble metal-containing wire and having a three-dimensional secondary structure produced thereon, the secondary structure being a dent structure having adjacent dents arranged next to one another in two dimensions, the dent structure having the shape of a hexagon and being formed by self-organization in a denting operation.

2. The catalyst according to claim 1 , wherein the sheet structure defines a base area in which the dent structure extends in two dimensions and wherein the catalyst is configured for the flow of a fluid through the catalyst in a flow direction, the base area extending perpendicular to the flow direction.

3. The catalyst according to claim 1 , wherein adjacent indentations are separated from one another by an edge zone.

4. The catalyst according to claim 1 , wherein the noble metal-containing wire is made of a noble metal.

5. The catalyst according to claim 1 , wherein the catalyst comprises a plurality of textile sheet structures arranged one after the other, indentations of adjacent textile sheet structures being offset relative to one another.

6. The catalyst according to claim 5 , wherein each of the textile sheet structures has an upper side having concave, inward-curving indentations and an underside having convex outward-curving indentations, and wherein the textile sheet structures are arranged one after the other such that the upper sides and the undersides of the textile sheet structures are located opposite one another.

7. The catalyst according to claim 1 , wherein the textile sheet structure has openings, each opening having a width of less than 500 μm.

Assignees

• Heraeus Deutschland Gmbh & Co Kg

Inventors

• Lukas Annette
• Glaab Guenter
• Humm Stephan
• Goelitzer Hubertus

Classifications

• B01J2219/32213

  Plurality of essentially parallel sheets · CPC title

• B01J2219/32248

  Sheets comprising areas that are raised or sunken from the plane of the sheet · CPC title

• B01J19/32

  Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer · CPC title

• B01J23/464

  Rhodium · CPC title

• B01J2219/32491

  Woven or knitted materials · CPC title