Metal fibers for catalyst non-wovens

US8293678B2 · kind B2 · utility

Assignee

• Heraeus Materials Technology GmbH & Co. KG · DE

Inventors

• Uwe Jantsch · Blaustein, DE
• David Francis Lupton · Gelnhausen, DE
• Harald Manhardt · Bruchköbel, DE
• Stefan VORBERG · Hanau, DE

Key dates

• Filing date: Jul 30, 2009
• Grant date: Oct 23, 2012
• Expiry date: Jul 30, 2029

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N3/2835
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A metal fiber based on one or several elements from the group of platinum, palladium, rhodium, ruthenium, and iridium with 0 to 30% by weight of one or several additional alloy elements from the group of nickel, cobalt, gold, rhenium, molybdenum, and tungsten, contains 1 to 500 ppm by weight of boron or phosphorus. A non-woven material or netting, in particular for the production of nitrogen oxide or for the production of hydrocyanic acid, is made of such fibers. For the production of fibers based on noble metals having up to 30% by weight of additional alloy metals by drawing the fibers from a melt, the melting point of the metal is reduced by at least 400 ° C., before drawing of the fibers, by additionally alloying with boron or phosphorus, and the boron or the phosphorus is removed again from the fibers.