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http://dx.doi.org/10.5012/jkcs.2006.50.1.053

Syntheses of FAPO-5 Molecular Sieves with Microwave Irradiation and Their Characterization  

Jang, Jong-San (한국화학연구원)
Lee, Jin-Ho (한국화학연구원)
Jeong, Seong-Hwa (한국화학연구원)
Hwang, Jin-Su (한국화학연구원)
Publication Information
Journal of the Korean Chemical Society / v.50, no.1, 2006 , pp. 53-59 More about this Journal
Abstract
.FAPO-5 molecular sieves were synthesized starting from the same reactant gel at 170 oC using microwave irradiation technique and conventional hydrothermal reaction. The FAPO-5 molecular sieves were characterized by several techniques such as SEM, FTIR, UV/Vis, and ESR. Moreover, the oxidation of styrene over FAPO-5s was carried out, and compared to check the oxidation and epoxidation ability of the two FAPO-5s. FAPO-5 can be obtained easily by microwave irradiation within 15 min at 170oC, whereas FAPO-5 synthesis is completed in 6 h by conventional electric heating, confirming the acceleration about 20 times by microwave technique. There are no appreciable differences between two FAPO-5s in surface area and coordination state of iron. The FAPO-5 synthesized by microwave irradiation shows higher epoxide selectivity in the styrene epoxidation, which may be explained by the higher hydrophobicity of the catalyst.
Keywords
FAPO-5; Microwaves; Synthesis; Epoxidation
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