Process for providing catalytically active platinum metal layers

US5855959A · kind A · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Juergen Boecker · Oberhausen, DE
• Michael Butz · Bietigheim-Bissingen, DE
• Alfred Frey · Thun, CH
• Petra Hofmeister · Rottenburg am Neckar, DE
• Hans-Dieter Schmidt · Wissen, DE

Key dates

• Filing date: Apr 2, 1993
• Grant date: Jan 5, 1999
• Expiry date: Apr 2, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C18/30
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A process for depositing catalytically active platinum metal layers from an ionogenic, acidic, platinum metal ions-containing solution which further contains sulfonic acid. This activation leads to more uniform catalyst layers with greater surfaces which are catalytically more efficient. The process according to the invention can be implemented in any chemical process utilizing platinum metal catalysts, e.g. chemical synthesis, environment applications or metallization of surfaces.