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A kinetic study on thermal chlorination of l-chloro-2,2,2-trifluoroethane

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Abstract

HCFC-133a (l-chloro-2,2,2-trifluoroethane) was thermally chlorinated in an integral reactor under atmospheric pressure in a temperature range between 573 and 723 K. From the analysis of the data it was confirmed that the reaction was a two-step series-parallel reaction and each step was a second-order reaction. The ratio of the second-step rate constant to the first-step rate constant did not change with temperature and its value was 1.13. The activation energy was 106 kJ/g-mol. These results indicate that the product distribution is the sole function of conversion of HCFC-133a.

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Abbreviations

A:

HCFC-133a

B:

Cl2

C i :

concentration of component i (i=A, B, R or S)

C to :

concentration of component i at. reactor inlet [kg-mol/m3]

E:

activation energy [kJ/g-mol]

{F}inAo :

molar feed rate of A [kg-mol/s]

F(X A :

function of {X}inA defined by Eq. (16)

k1, k2 :

rate constants [m3/kg-mol·s]

R:

HCFC-123, or gas law constant

ri :

reaction rate for compound i [kg-mol/m3·s]

S:

CFC-113a

SR :

selectivity of R

t:

time [s]

V:

volume of reactor [m3]

v :

volumetric feed rate [m3/s]

X A :

conversion of A [-]

α:

k2/k1 [-]

τ:

space time ( = V/v) [s]

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Authors and Affiliations

  1. Department of Chemical Engineering, Sung Kyun Kwan University, 440-746, Suvvon, Korea

    Ki June Yoon, Gyu Il Shim, Kun You Park & Hoon Sik Kim

  2. Korea Institute of Science and Technology, P.O. Box 131, 130-650, Cheongryang, Seoul, Korea

    Kun You Park & Hoon Sik Kim

Authors
  1. Ki June Yoon
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  2. Gyu Il Shim
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  3. Kun You Park
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  4. Hoon Sik Kim
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Yoon, K.J., Shim, G.I., Park, K.Y. et al. A kinetic study on thermal chlorination of l-chloro-2,2,2-trifluoroethane. Korean J. Chem. Eng. 10, 220–225 (1993). https://doi.org/10.1007/BF02705271

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  • DOI: https://doi.org/10.1007/BF02705271

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