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[高分] Preparation and characterization of hexagonal zirconium phosphate nanoparticles and its application in synthesis of chemicals in solvent-free conditions
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作者： H Karimi 摘要： Zirconium phosphate (ZP) nanoparticles as an effective, eco-friendly and recoverable solid acid catalyst were prepared using polyvinyl alcohol (PVA), zirconyl chloride and phosphoric acid through precipitation. After calcinations of PVA/ZP at 550 °C for 4 h, pure ZP nanoparticles with hexagonal shape were obtained. H-bonds between ZP and PVA along polymer chains play an important role in the dispersion of in situ formed ZP. The catalysts were characterized by several instrumental techniques such as BET, ICP-OES, XRD, FT-IR, SEM and TEM. TPD-NH3 analysis suggests the presence of reasonable amount of Brnsted acid sites. The acidic properties were studied in synthesis of some fine chemicals. 收起 会议名称： of the 5th International Conference on Nanostructures 会议时间： 2014/03/06 |
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