ZHAVORONKOV 438 



Communist Party of the Soviet Union. He was elected, in 1953, 

 a Corresponding Member of the U.S.S.R. Academy of Sciences, 

 and in June 1962, an Academician. In June 1958, Zhavronkov 

 visited the United States to attend the 50th Anniversary of the 

 Institute of Chemical Engineers in Philadelphia, Penna. 



In the beginning of his scientific career, Zhavoronkov studied 

 processes for obtaining hydrogen and a nitrogen-hydrogen mix- 

 ture and their purification from carbon dioxide and carbon 

 monoxide for production of synthetic ammonia. In 1936-50 he 

 investigated hydro -aerodynamics of scrubbers and fractional 

 columns. For this work in 1950 the Academy of Sciences 

 awarded him the D. I. Mendeleev Prize. 



The works of Zhavoronkov in later years dealt with the pro- 

 cesses of separating liquid and gas mixtures by absorption, 

 rectification, molecular distillation and chemical ion exchange. 

 Together with others, he completed a series of works on the 

 theory of processes of concentration of stable isotopes and 

 worked out methods for isolating isotopes of hydrogen, carbon, 

 nitrogen, oxygen, boron and other light elements. 



In September 1962, Zhavoronkov was appointed Director of 

 the U.S.S.R. Academy of Sciences Institute of General and In- 

 organic Chemistry. 

 Bibliography: 



Hydraulic Basis of the Scrubber Process and Heat Transfer 

 in Scrubbers. Moscow: 1944. 



and V. A. Malyusov . Molecular distillation. Chemical 

 Industry, 1950, #11-12. 



Nitrogen in Nature and in Technology. Moscow: 1951. 

 Sources of Technical Combined Nitrogen. Moscow: 1951. 

 and V. A. Mamosov, N. A. Malafeev. Mass transfer in the 

 process of film absorption. Chemical Industry, 1951, #8, 

 1953, #4. 



and A. I. Maier . Separation of mixtures by methods of mole- 

 cular distillation. Methods and Processes of Chemical 

 Technology. Collection 1. Moscow-Leningrad: 1955. 

 and V. A. Mamosov, N. N. Umnik. Separation of mixtures by 

 method of high vacuum rectification. Methods and Processes 

 of Chemical Technology. 1. Moscow-Leningrad: 1955. 

 and 0. V. Uvarov, N. N. Sevryugova. Physico-chemical 

 constants of heavy oxygen water. Utilization of Labelled 

 Atoms in Analytic Chemistry. Moscow: 1955. 

 and S. I. Babkov. Industrial method of obtaining concentrates 

 of the heavy isotope of nitrogen. Chemical Industry, 1955, 

 #7. 



