关键词: La₂O₃/SiO₂催化剂, 稳态及脉冲动力学

Abstract: The kinetics of isomerization of 1-butene over La₂O₃/SiO₂ catalyst has been investigated by the flow-reciculation glass reactor by the steady-state and pulse methods. The activity of isomerization for butene decreased with increasing the partial pressure of water. The steady-state kinetics of isomerization for butene obeyed the L-H mechanizm kinetic equation, which represented the rate equation of first order approximately. The heats of adsorption for 1-butene, 2-butene and water were determined by the pulse method. The values of adsorption heats for 1-butene, 2-butene and water were coincided with the values estimated by the method of orthoganol design. The pulse kinetics of isomerization for 1-butene obeyed the Bassett equation of first order. The relative activity of isomerization for 1-butene to t-2-butene and c-2-butene by the steady-state method were coincided with the values by the pulse method. The intrinsical activation energy of isomerization for 1-butene to t-2-batene and c-2-butene were coincided with the values by the pulse method.

Key words: La₂O₃/SiO₂ catalyst, steady-state and pulse kinetics