IBM Journal of Research and Development
IBM Skip to main content
  Home     Products & services     Support & downloads     My account  

  Select a country  
Journals Home  
  Systems Journal  
Journal of Research
and Development
    Current Issue  
    Recent Issues  
    Papers in Progress  
    Recent publications  
    Author's Guide  
  Contact Us  
  Related links:  
     IBM Research  

IBM Journal of Research and Development  
Volume 28, Number 6, Page 679 (1984)
  Full article: arrowPDF   arrowCopyright info


Mechanisms of electroless metal plating: II. Decomposition of formaldehyde

by P. Bindra, J. M. Roldan, G. V. Arbach
A detailed investigation of the decomposition of formaldehyde was carried out to account for the fact that formaldehyde decomposition on Group VIII metals, e.g., Pd, occurs without simultaneous hydrogen generation, while on Group IB metals, e.g., Cu, formaldehyde decomposition is accompanied by hydrogen evolution. It was found that in principle metals may be divided into three main classes: (a) metals with positive free energy of hydrogen adsorption, (b) metals with free energy of hydrogen adsorption close to zero, and (c) metals with negative free energy of hydrogen adsorption. In the case of class (a) metals formaldehyde oxidation is accompanied by hydrogen evolution; for class (b) metals there is no simultaneous hydrogen evolution; and class (c) metals show low catalytic activity for formaldehyde oxidation. Hence, formaldehyde cannot be used as a reducing agent for electroless plating of class (c) metals.
Related Subjects: Chemistry and chemical engineering; Electroless plating; Materials; Packaging