VAPORIZATION OF IRIDIUM AND RHODIUM

Journal Article · Thu Jun 01 00:00:00 EDT 1961 · Journal of Chemical Physics (U.S.)

DOI:https://doi.org/10.1063/1.1731792· OSTI ID:4044100

Panish, M B; Reif, L

The vaporization of iridium and rhodium was studied by Knudsen effusion and Langinuir evaporation techniques. The vapor pressure of iridium over the temperature range of 2100 to 2600 deg K is represented by the equation: logn/sub m//sub m/ = the temperature range of 2050 to 2200 deg K by the equation: logp/sub m//sub m/ = 0.28--(28300/T). Third-law analyses of the data yield the following heats of vaporization: iridium' DELTA H/sub 2//sub 9//sub 8/ = 158.4 plus or minus 0.5 kcal/mole; rhodium, DELTA H/sub 2//sub 9//sub 8/ = 132.8 plus or minus 0.3 kcal/ mole. Estimated boiling points for iridium and rhodium are 4800 deg and 3980 deg K, respectively. (auth)

• Research Organization: Avco Corp., Wilmington, Mass.
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-022286
• OSTI ID: 4044100
• Journal Information: Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 34; ISSN JCPSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BOILING
CHEMISTRY
EVAPORATION
IRIDIUM
KNUDSEN EFFUSION
PRESSURE
RHODIUM
TEMPERATURE
VAPORS