KINETIC STUDY OF THE GASEOUS IODINE-FUSED SILVER NITRATE REACTION. Technical Report No. 1. (thesis)
A study was made of the reaction between gaseous I/sub 2/ and molten silver nitrate at 215 deg C and 151 deg C using radioactive I/sup 131/ as a tracer to continuously monitor the system. The data are correlated by a mechanism in which gaseous I/sub 2/ diffuses to the liquid-gas interface, reacts, and the molten products diffuse into the bulk of the liquid. It is assumed that both gas and liquid phases are well mixed and resistance to diffusion is in the films on both sides of the interface. The value of the overall transfer coefficient varies from 2.16 x 10/sup -5/ to 4.75 x 10/sup -5/ (gm moles/sec cm/ sup 2/ atm) for bed thicknesses varying from 0.507 to 0.127 cm. This mechanism holds for 50% conversion or greater depending on bed thickness and temperature. The remainder of the reaction is much slower and is believed dependent on the diffusion of reacted products through the main body of liquid in which a concentration gradient was established. This is explained by an increase in viscosity of the reaction mixture with an increase in concentration of products and poorer mixing. A method for the gravimetric analysis of the fused mixture AgNO/sub 3/-AgI-AgIO/sub 3/ based on the relative solubilities of the salts in water and ammonia hydroxide was used to analyze the reaction products. A differential grinding and radioactive counting technique was used to determine concentration profiles in the reacted solids. Preliminary data are presented on the solid-liquid phase diagram of the aforementioned three-component system. (auth)
- Research Organization:
- Ohio State Univ. Research Foundation, Columbus
- NSA Number:
- NSA-16-031585
- OSTI ID:
- 4776430
- Report Number(s):
- TID-16807
- Country of Publication:
- United States
- Language:
- English
Similar Records
PHASE RELATIONSHIPS FOR THE AgNO$sub 3$-AgI-AgIO$sub 3$ SYSTEM
Silicon preparation and purity from the reaction of sodium with silicon tetrafluoride and silicon tetrachloride: a thermochemical study