Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (3): 397-401.DOI: 10.12068/j.issn.1005-3026.2015.03.021

• Materials & Metallurgy • Previous Articles     Next Articles

Microwave Hydrothermal Synthesis and Characterization of Y/SBA-15

SHI Chun-wei, WU Wen-yuan, BIAN Xue, BAI Yu-ting   

  1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2014-01-08 Revised:2014-01-08 Online:2015-03-15 Published:2014-11-07
  • Contact: WU Wen-yuan
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Abstract: A microwave radiation hydrothermal method to control synthesis of micro-and mesoporous Y/SBA-15 composite molecular sieves was reported. The effects of pH, molar ratio of silica and P123, microwave power, stirring speed, and crystallization temperature on the growth of Y/SBA-15 were observed by X-ray diffraction(XRD). The composite zeolite synthesis conditions were identified:the pH value was 2.5, the molar ratio of silica and P123 was 58, the microwave power was 200W, the stirring speed was 250r/min, and the crystallization temperature was 120℃. The synthesized samples were characterized by N2 adsorption-desorption and TEM. The results showed that synthetic products with regular crystallinity of short rod of uniform size show the microporous and the mesoporous structures at the same time. Pore size distribution of microporous and mesoporous structures is uniform. The adsorption study indicated that Y/SBA-15 has the average pore diameter of 4.05013nm, the pore volume of 0.350525cm3/g, and the hole wall thickness of 2.2nm, respectively.

Key words: microwave hydrothermal method, composite molecular sieve, characterization, microporous, mesoporous

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