Browsing by Author "Emovon, E. U."

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    Catalyzed Thermal Decomposition of Organic Acids: Part 2.—Catalyzed Decomposition of Cyclopentane- and Cycloheptane-carboxylic Acids by Hydrogen Bromide
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (1), 1973) Ahonkhai, S. I.; Emovon, E. U.
    Cyclopcntanc- and cycloheptane-carboxylic acids decompose by a molecular mechanism into carbon monoxide, water and the corresponding alkene on catalysis by HBr in a seasoned Pyrex vessel. The decomposition is homogeneous and first order in acid and catalyst, HBr. The second order rate constants, expressed by the Arrhenius equations are: k2 = 1012.17e-29 550/RTcm3mol-1 s-1 for cycloheptanecarboxylic acid and k2 = 1013.49e-34 590/RTcm3mol-1 S-1 for cyclopentanecarboxylic acid over the temperature range 369.0-434.0°C (R in cal mol"1).
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    Thermal Decomposition of Ethyl, Isopropyl and t-Butyl Fluorides in the Gas Phase
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (11), 1972) Dastoor, P. N.; Emovon, E. U.
    Ethyl, isopropyl and t-butyl fluorides decompose in a flow system into hydrogen fluoride and the corresponding olefin by a predominantly molecular mechanism. The first order rate constants are given by the Arrhenius equations: ethyl fluoride (520–600°C) : k/s–1= 1012.16±0.04exp–59 200±2000/RT, isopropyl fluoride(445–522°C) : k/s–1= 1011.83±0.02 exp–53 900±800/RT, t-butyl fluoride (329–370°C) : k/s–1= 1013.96±0.01 exp–50 400±900/RT.