Reinterpretation of rate data for the reaction of ClF and F{sub 2}

Technical Report · Sat Jan 01 04:00:00 EST 1994

DOI:https://doi.org/10.2172/10117670· OSTI ID:10117670

Trowbridge, L D

Experimental data reported by Reiner and Simmons on the rate of recombination of ClF + F{sub 2} have been reinterpreted to yield a single rate equation. This reinterpretation assumes that the recombination reaction is surface area dependent and is first order in partial pressure of each of F{sub 2} and ClF. The recombination rate equation used fits quite well three data sets which varied significantly in available NiF{sub 2} surface area. Resulting equation is dn(ClF{sub 3})/dt = A S P(F{sub 2})P(ClF)(1 {minus} {Theta})e-{sup {minus}E/RT}, where dn(ClF{sub 3})/dt is the rate of formation of ClF{sub 3}in mol/s, S is the surface area of NiF{sub 2} catalyst in cm{sup 2}, P(X) is the partial pressure of species X in Torr, R is the gas constant (1.987 cal/mol-K), and T is the temperature in Kelvin. The pre-exponential A, and activation energy E are given by: A = 2.853 {times} 10{sup {minus}8} mole/s-cm{sup 2} {minus} Torr{sup 2}, and E = 11665 cal/mole, and the term (1 {minus} {Theta}), a product surface-coverage related inhibition factor, is given by: (1 {minus} {Theta}) = (1 + 0.184 P(ClF{sub 3})){sup {minus}1} (but (1 {minus} {Theta}) is never allowed to be less than 16%)

• Research Organization: Oak Ridge K-25 Site, TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10117670
• Report Number(s): K/TCD--1091; ON: DE94005819
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201
CATALYSTS
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHLORINE FLUORIDES
FLUORINE
NICKEL FLUORIDES
RECOMBINATION