The gaseous oxidation of diethyl ether
Tóm tắt
A detailed study has been made of the gaseous oxidation of diethyl ether in the low-temperature region. The reaction has many characteristics of hydrocarbon oxidation, although there is one essential difference: excess oxygen tends to retard the rate of ether combustion. The principal products during the induction period are acetaldehyde, peracetic acid and ethanol. In the later stages of reaction, acetaldehyde and peracetic acid are consumed; ethanol and acetic acid being the principal end-products. It is assumed that an ‘ether radical’, CH 3 CHOCH 2 CH 3 , formed by the initiation process, decomposes to yield acetaldehyde and an ethyl radical. Subsequently, there are two concurrent reactions. First, the ethy radicals are oxidized throughout the course of the reaction, ethanol being the principal product of this process. Secondly, acetaldehyde is oxidized to peracetic acid, the peracetic acid decomposing in the later stages of reaction to form copious amounts of acetic acid. It is thought that the peracetic acid is the compound that is primarily responsible for chain-branching.
Từ khóa
Tài liệu tham khảo
Bailey H. C., 1952, Proc. Roy, Soc. A, 212, 311
Bell K. M., 1956, Proc. Roy, Soc. A, 238, 256
Bricker C. E., 1945, Analyt. Chem., 17, 400
Chamberlain G. H. N. & Walsh A. D. 1949a Third symposium on combustion pp. 368 375. Baltim ore: Williams and Wilkins.
Chamberlain G. H. N., 1952, Proc. Roy, Soc. A, 215, 175
Cullis C. F., 1956, Proc. Roy, Soc. A, 237, 530
Cullis C. F., 1957, Proc. Roy, Soc. A, 242, 516
Cullis C. F., 1958, Proc. Roy, Soc. A, 246, 248
Egerton, 1956, Proc. Roy, Soc. A, 235, 158
Ermakova K. I., 1940, J, Phys. Chem. U .S.S.R., 14, 148
Freeman G. R., 1958, Proc. Roy, Soc. A, 245, 49
Gray J. A. 1950 Thesis London University.
Gray P., 1954, Proc. Roy, Soc. A, 221, 462
Gray P., 1957, Chem. Soc. Special Publ., 9, 97
Knox J. H., 1954, Proc. Roy, Soc. A, 221, 151
Leger E., 1953, J•Chem, Phys., 21, 1310
Lemay A., 1955, Canad. J, Chem., 33, 1316
Lemay A., 1957, Canad. J, Chem., 35, 124
McDowell C. A. & Farmer J. B. 1955 Fifth symposium on combustion p. 453. New York: Reinhold Publishing Corporation.
McDowell C. A. & Thomas J. H. 1949
McDowell C. A., 1950, J, Chem. Soc., 2208
Neiman M. B., 1953, Dokl, ANauk. S.S.S.R ., 90, 583
Newitt E. J. 1956 Thesis London University.
Ouellet L., 1949, J, Chem. Phys., 17, 746
Ouellet L., 1950, J, Chem. Phys., 18, 383
Ouellet L., 1951, Canad. J, Chem., 29, 76
Townend D. T. A., 1937, Proc. Roy, Soc. A, 158, 415
Waddington D. J. 1959 Seventh symposium on combustion p. 165. London: B utterw orth's Scientific Publications.