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2005
Zeolites
V 1350
28- 210
Zeolites
Synthesis of Template-Free Zeolite Nanocrystals by Reverse Microemulsion—Microwave Method. — Pure zeolite A nanocrystals with uniform and small size
(40—80 nm) are synthesized by solubilizing the synthesis gel (5.85 Na2O:2.7 SiO2:1.00
Al2O3:182 H2O) into a mixture of cetyltrimethylammonium bromide and cyclohexane
followed by microwave heating at 75 °C. The samples are characterized by XRD and
SEM. The reverse microemulsion possibly acts as a space-confining nanoreactor, and
microwaves provide fast, homogeneous, and preferential heating of the aqueous phase
where zeolite crystals are produced. The method can potentially provide a general route
to synthesize small, uniform, dispersable, and template-free zeolite nanocrystals. —
(CHEN, Z.; LI, S.; YAN*, Y.; Chem. Mater. 17 (2005) 9, 2262-2266; Dep. Chem.,
Univ. Calif., Riverside, CA 92521, USA; Eng.) — W. Pewestorf
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