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Appraisal of catalysts for the hydrolysis of carbon disulfide
Author(s) -
Tong S.,
Dalla Lana I. G.,
Chuang K. T.
Publication year - 1992
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450700315
Subject(s) - catalysis , bauxite , hydrolysis , desorption , water vapor , inorganic chemistry , sulfur , condensation , carbon fibers , chemistry , chemical engineering , oxide , materials science , organic chemistry , adsorption , composite material , thermodynamics , physics , composite number , engineering
Industrial alumina‐ and titania‐based catalysts were tested for CS 2 hydrolysis in a Berty reactor. Activated bauxite is the most active catalyst below 290°C and titanium oxide above 290°C. TGA experiments examining water desorption from 50°C to 550°C showed complete desorption from titania by 300°C and continuous desorption even beyond 550°C for alumina and bauxite. Using the Kelvin equation to predict capillary condensation over the range of pore sizes of these catalysts, condensation of water vapour should be negligible but for sulfur vapour considerable blocking of pores is predicted for alumina. Much of the internal area of aluminas may thus become inaccessible to vapor molecules. These observations suggest why alumina‐based catalysts exhibit lower activity for CS 2 and COS hydrolysis in modified Claus plant reactors.