Oxidative and Reductive SSIE

Similarly, Feeley and Sachtler [256] showed that cation exchange of solid palladium with H-Y was mediated by an oxidative gas phase. These authors assumed that PdCl2 formed from Pd and chlorine and that PdCl2 subsequently diffused into the pore system, reacted there and replaced the protons under formation of Pd + on cation positions and HCl. 

RSSIE in the above systems was investigated by TPR/TG (temperature-programmed reduction monitored by a thermobalance), XRD, TEM/EDAX, XPS and IR. However, in the case of CuO/H-ZSM-5, it turned out that employment of a reducing agent was not necessary for incorporation of Cu cations, since auto-reduction occurred. 

Interest in the preparation of galHum-containing and indium-containing zeolites by reductive solid-state ion exchange was stimulated by the fact that these materials might also be promising catalysts for aromatization of alkanes and redox reactions, respectively. 

Only a small fraction of GajOj conversion may occur according to Eq. (31) upon calcination under high vacuum  

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