uggs nederland Microwave Synthesis of NaX zeolite -

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Microwave Synthesis of Zeolite NaX

Lin Department of Chemistry, University of helmet, long transcripts, 155 ~ z5) key tone. , Pull out radio-ray diffraction into non-Noir extravagance like p · different temperatures, crystallization time is a few hours to tens of hours. In recent years, microwave irradiation method has been applied to inorganic and organic materials in the synthesis of Taiwan. ChuPochen such in the patent literature, synthesis, which refers to the NaX zeolite, but the details of the synthesis experiment without making any description. Synthesized by microwave radiation rejection NaX zeolite, has not been reported in the country. Our water glass as silicon source in order to shop for the aluminum source of aluminum acid to adjust the reaction mixture of europium hydroxide alkalinity,[link widoczny dla zalogowanych], the specific ratio (molar ratio) for SiO: / Al203-2.3, Na2O / sioz = 1.4, H2O/SiO2-57. Stir the reaction materials, enclosed in a Teflon reactor, the reactor received the microwave radiation, microwave power 650W,[link widoczny dla zalogowanych], microwave frequency of 2450MHz, the next file in the l ~ 3 (equivalent to the total power of 1O ~ 5O) use. After about 30min of radiation, cooling, filtration, washing,[link widoczny dla zalogowanych], drying the original NaX zeolite powder, the x-ray powder diffraction is shown in Figure l_ Esl consistent with the literature. The reaction mixture with the same ratio,[link widoczny dla zalogowanych], we use the conventional electric oven heating method, crystallization under 3.00 ℃, 3.7h was Nax zeolite. Comparison of reaction time, can clearly see the advantages of microwave radiation method. Not only saves time, more importantly, dramatically reduce energy consumption. NaX samples of two SEM images (Figure 2) clearly shows that the microwave radiation synthesis of sample size is small and uniform, the measured surface area of its traditional method of synthesis of NaX was about 2 times the body, there will be significant advantages. 2 () around a sample of the x-ray powder diffraction circles such as molecular sieve or catalyst containing catalytic Jing Received Date I1992-06-13 modification date of receipt of your samples ,1992-08 ~ 1o. Circle of Song Yu Contact t 2 set of samples by scanning electron photo ') mass of sample classes, (b) microwave sample
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