メキシコにおける第7回世界石油会議に出席して
1967 年 46 巻 9 号 p. 647-652
詳細
1967 年 46 巻 9 号 p. 647-652
Among the many papers presented at the 7th World Petroleum Congress in Mexico, the followings seem to me to be interesting.
(1) On the production of isoprene as the raw material of synthetic natual rubber.
Isoprene is now generally produced by the reaction between aluminium tripropyl and propylene, but Dr. Wilkes of Chevron Research Co. proposed the process to use potassium for the dimerisation of propylene.
The dimer obtained is mainly composed of 4-methyl-1-pentene which is then isomerized to 2-methyl-2-pentene, followed by the cracking to produce isoprene.
(2) New oligomer synthesis
Dr. R. Kh. Freidlina of USSR proposed the use of Fe (CO) 5 for the Oligomerisation between CCl4+CH2=CH2, although the ratios of n in CCl3 (CH2-CF2) n Cl did not change in the change of the initiater from peroxides to Fe (CO) 5.
Next, the hydrodimerisation of acrylonitrile to adiponitrile was reported by Dr. M. M. Baizeru of Monsanto Chemical Co.
(3) Oxidation
Dr. F. K. Fields of Amoco Chemical Cor. reported the ozonolysis of olefins in the presence of anionic reagents such as alkali, ammonia and hydroxylamine.
In the presence of ammonia, cyclohexadiene converted to pyridine and similar reactions were observed in the Ozonolysis of cyclic dienes.
The propylene oxide production was corned out by the reaction of hydroperoxide with propylene in the presence of Mo catalyst. Dr. R. Landau of Landau of Halcon International Inc. used the hydroperoxide from ethylbenzene, although various kinds of modified processes are well known, such as acetaldehyde-propylene, cyclohexanonpropylene processes.
(4) Acetylene production
Hydrogen plasma-jet process for the production of acetylene starting from methane was reported by USSR chemist, and the necessary electrical energy is said to be 10kWhr per 1 kg of acetylene. Spark and plasma-jet processes are now being closed up as the acetylene productions processes.
