Preparation of Rhodium (III)-13X Zeolite from Hydrochloric Acid Medium and Thermogravimetric and FTIR Studies of its Reprecipitated and Calcined Forms

Abstract

A yellow and an ash-grey derivatives of 13X zeolite have been prepared with RhCl₃ from HCl medium after reprecipitating with ammonia followed by calcination. The yellow form contains 3.55% nitrogen and gives a weight loss of 28.99% upto 945ºC on TG analysis. The calcined form shows total absence of nitrogen and only 0.6% weight loss. Both these forms clearly indicate the presence of Rh–H type species identified by FTIR band at 2300 cm^–1.