Abstract
The crystal size and shape of the silicoaluminophosphate molecular sieve SAPO-34 have been effectively controlled in the reaction system of Al2O3–P2O5–SiO2–TEAOH–H2O under microwave radiations. Nano sheet-like SAPO-34 crystals are obtained when using colloidal silica as the silica source. When TEOS is used as the source of silica, homogeneous SAPO-34 crystals with a particle size of about 100 nm are formed, and the morphology of the crystals changes from uniform nano particles (~100 nm) to microspheres (~1.5 μm) by varying the H2O/Al2O3 molar ratio. To further investigate the morphology control of SAPO-34, the synthetic factors, such as the silica source, water content, crystallization time and aging time have been studied in detail.
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We acknowledge the special funding support from the National Natural Science Foundation of China and the State Basic Research Projects of China (2006CB806103 and 2007CB936402).
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Lin, S., Li, J., Sharma, R.P. et al. Fabrication of SAPO-34 Crystals with Different Morphologies by Microwave Heating. Top Catal 53, 1304–1310 (2010). https://doi.org/10.1007/s11244-010-9588-3
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DOI: https://doi.org/10.1007/s11244-010-9588-3