Double redox process to synthesize CuO-CeO catalysts with strong Cu-Ce interaction for efficient toluene oxidation.

In this study, a novel double redox (DR) method was developed to synthesize highly active CuO-CeO (CuCe-DR) catalyst for catalytic oxidative decomposition of toluene. Compare with CuCe-C catalyst prepared by co-precipitation method, CuCe-DR catalyst exhibits a higher Ce ion and incorporated Cu ion concentration, and has a stronger Cu-Ce interaction. Ce and incorporated Cu ions can induce the formation of oxygen vacancies, and thus increasing the amount of surface chemisorbed oxygen on CuCe-DR catalyst.

Expanding the Synthesis Field of High-Silica Zeolites.

Aluminosilicate zeolites are synthesized under hydrothermal conditions in a basic/alkaline medium in the pH range between 9 and 14. The synthesis of MFI-type zeolite in an acidic medium is presented. The critical parameter determining the zeolite formation in an acidic medium was found to be the isoelectric point (IEP) of gel particles.