Patent ID: 6153167
Filing Date: 2000-11-28
Classification: C01G,G01N

Abstract:
A method of preparing gaseous compositions comprising a metal carbonyl, at ppm concentration, the method comprising the steps of:(a) placing metal of the metal carbonyl to be produced into a first test vessel at a first temperature, the metal being of a form selected from the group consisting of powders and filings;(b) pressurizing the first test vessel with a gas comprising carbon monoxide from a carbon monoxide source vessel;(c) heating the first test vessel to a second temperature and at a rate sufficient to initiate reaction of carbon monoxide with the metal to promote metal carbonyl formation, thereby forming a gas composition comprising a metal carbonyl;(d) quenching the reaction of the carbon monoxide with the metal by transferring some of the gas composition comprising a metal carbonyl from the first test vessel to a second test vessel which is at a third temperature, the third temperature being lower than the second temperature; and(e) diluting the gas composition comprising the metal carbonyl in the second test vessel with an inert gas from an inert gas source container.