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《Chinese Journal of Catalysis》 1993-03
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CARBONYL SULFIDE HYDROLYSIS ON ALKALIZED Y-A_2O_3 CATALYST AT LOWER TEMPERATURE Ⅰ.CATALYST ACTIVITY AND COMPENSATION EFFECT

Tan, Shi-shao;Li, Chun-hu;Guo, Han-xian;Shi, Jian-ping and Yang, Xing-min (Research Institute of Coal Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024)  
A series of A12O3 catalysts impregnated with alkali metal oxides and alkali earth metal oxides for COS hydrolysis was prepared,The activities of the catalysts in a lower temperature range (45-100C) were investigated by means of microreactor-cbromatograpb. It was shown that the catalytic activity was closely related to the oxide and its content. It was also observed that a compensation effect existed by studying the reaction rate constant (K) at various temperatures, j. e. the activation energy (E) increased with the increase of the pro-exponential factor (A), Both compensation effect parameter (K0) and energy distribution exponential factor (1/6) were closely related to the metal ionic radius (dm). The isokinetic temperatures (Ts) of all prepared catalysts were obtained. A possible explanation for the compensation effect in COS hydrolysis was given.
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