Investigation of the hydrochlorination of SiCl/sub 4/. Quarterly report, October 9, 1982-January 8, 1983. Flat-Plate Solar-Array Project, Advanced-Materials Research Task

Technical Report · Tue Jan 18 04:00:00 EST 1983

DOI:https://doi.org/10.2172/6396100· OSTI ID:6396100

Mui, J. Y.P.

A basic, experimental study on the hydrochlorination of silicon tetrachloride and metallurgical-grade silicon with hydrogen gas to form trichlorosilane has been carried out to greatly expand the range of reaction conditions. The equilibrium constant, K/sub p/, for the hydrochlorination reaction was measured as a function of temperature, pressure, and concentration. The variation of the equilibrium constant as a function of temperature provided the measurement on the heat of reaction, ..delta..H, by the Second Law Method. The value of ..delta..H was measured to give 10.6 Kcal/mole. The equilibrium constant was also studied as a function of concentration. In agreement with the theory, the equilibrium constant remained constant with respect to the varying H/sub 2//SiCl/sub 4/ feed ratios. On the other hand, the effect of pressure on the equilibrium constant was found to be more complex. At the lower-pressure range of 25 psig to 100 psig, the equilibrium constant remained constant within experimental error. However, at the higher-pressure range of 150 psig to 500 psig, the equilibrium constant showed a much higher value.

• Research Organization: Solarelectronics, Inc., Bellingham, MA (USA)
• DOE Contract Number: NAS-7-100-956061
• OSTI ID: 6396100
• Report Number(s): DOE/JPL/956061-6; ON: DE83007036
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
CHLORIDES
CHLORINATION
CHLORINE COMPOUNDS
DIRECT ENERGY CONVERTERS
ELEMENTS
ENTHALPY
EQUIPMENT
HALIDES
HALOGEN COMPOUNDS
HALOGENATION
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGENATION
KINETICS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
REACTION HEAT
REACTION KINETICS
SEMIMETALS
SILANES
SILICON
SILICON CHLORIDES
SILICON COMPOUNDS
SILICON SOLAR CELLS
SOLAR CELL ARRAYS
SOLAR CELLS
SOLAR EQUIPMENT
SYNTHESIS
THERMODYNAMIC PROPERTIES