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8208501 
Journal Article 
Catalytic reduction of chloronitrobenzene to chloroanilines - Communication 1. Reduction in the presence of nickel catalysts 
Sokolova, NP; Balandin, AA; Maksimova, NP; Skul'Skaya, ZM 
1966 
1 
Bulletin of the Academy of Sciences of the USSR. Division of Chemical Science
ISSN: 0568-5230 
Kluwer Academic Publishers-Plenum Publishers 
15 
11 
1824-1829 
English 
1. The industrial catalyst Ni/kieselguhr with 50% Ni catalyzes the reduction of p-chloronitrobenzene to p-chloroaniline in an autoclave under a pressure of 50-100 atm with a yield of up to 99% under optimum conditions. The catalyst is deactivated during operation as a result of of the influence of the HCl partially formed upon it. 2. When this catalyst is used in a flow-type apparatus under atmospheric pressure, it is found that under optimum conditions the reaction proceeds to an extent of 64% with 0.8% splitting out of HCl. 3. An investigation of powdered nickel as a catalyst for the reduction of p-chloronitrobenzene indicated that when experiments are conducted in an autoclave it is inactive, while in a flow-type apparatus at atmospheric pressure, up to 88% p-chloroaniline can be obtained with 0.4-0.9% splitting out of HCl. 4. An alloy of Ni - Cu (1 : 1) proved inactive for the investigated reaction when the experiments were conducted in an autoclave; in a flow-type catalytic apparatus at atmospheric pressure, the yield of pchloroaniline did not exceed 25%. © 1967 Consultants Bureau.