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Photooxidation and dark thermal oxidation of 1-butene on cationic forms of zeolite Y: a spectroscopic study

“…In a recent work, the photooxidation of small chain alkenes in zeolites ZSM-5, X and Beta has been investigated. 19,20 The results confirm that photooxidation of straight chain alkenes on Na-and Ba-forms of zeolites takes place at room temperature under visible light irradiation, although a number of products have been observed. From the outcome of photooxidation several mechanisms have been proposed (Fig.…”

Development of alternative photocatalysts to TiO2: Challenges and opportunities

“…264,265 Myli et al reported the production of benzaldehyde from toluene and acrolein from propene in zeolites X, Y and ZSM-5, emphasizing the shape-selective properties of the materials and successful removal of the products from the zeolite after their formation. 266 The factors influencing product formation in the photo-oxidation of alkenes in zeolites have been studied by Xiang et al, who pointed out the importance of considering the light wavelength, thermochemistry and the type of zeolite used in the reaction. 267 The performance of a series of transition metalexchanged BEA zeolites on the selective photo-oxidation of benzene was studied by Shimizu et al 268 While phenol and CO 2 were the main products detected on TiO 2 , selective formation of phenols or dihydroxybenzenes could be achieved depending on the metal immobilized on the BEA zeolite.…”

Zeolite and mesoporous silica nanomaterials: greener syntheses, environmental applications and biological toxicity

“…In order to avoid wasting the unreacted template and precursors, a recycling strategy can be implemented in which the zeolite nanocrystals are removed from the synthesis solution by centrifugation and then the synthesis solution is reheated to produce more zeolite nanocrystals. [29][30][31] The recycling strategy is depicted schematically in Fig. 4.…”