Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: International Zeolite Conference; SEOUL, SOUTH KOREA; SEOUL, SOUTH KOREA
Год издания: 1997
Аннотация: A process of adsorption of ethylene on partially decationated HNaZSM-5 at ambient temperature was studied. It was found that a dependence of the rate of surface oligomer formation upon time or ethylene coverage exhibited a pronounced maximum. A simple kinetic model to describe experimental data was proposed. The model is based on tПоказать полностьюhe assumptions that i) the limiting step of reaction is the step of activation of ethylene; ii) the kinetic constant of oligomer chain growth does not depend upon length of hydrocarbon chain and iii) the course of reaction is limited by the void volume of zeolite framework. Based on the values of the kinetic constants obtained it is assumed that the specific activity of the zeolites in the reaction of the chain prolongation does not depend upon the decationation degree whereas the activity in the reaction of chain initiation (ethylene activation) decreases with increase of sodium content.
Журнал: PROGRESS IN ZEOLITE AND MICROPOROUS MATERIALS, PTS A-C
Выпуск журнала: Vol. 105
Номера страниц: 1755-1762
ISSN журнала: 01672991
Место издания: AMSTERDAM
Издатель: ELSEVIER SCIENCE BV