Synthesis and properties of the micro/mesoporous materials in the ternary systems TiO2–Al2O3–SiO2
Анотація
A method of one-stage synthesis of Ti- and Al-containing moleculer sieves (Ti, Al-MMS) and mesoporous zeolites (Ti, Al-MZ) containing materials based on has been proposed; the kinetics of their formation and texture features has been studied. The materials obtained have been characterized by methods of IR-spectroscopy (FTIR), X-ray diffraction (XRD), and adsorption of nitrogen. The formation of zeolite structures (up to ~ 25 %) has been shown to be accompanied with destruction of mesophase structure but to occurr in the mesopore walls. Testing the materials obtained as catalysts in the reaction of dehydration and oxidative dehydrogentation of propane into propylene has shown a high selectivity (~ 75 %) in the dehydration reaction with yield of propylene about 33 %.
Посилання
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