Synthesis and Regulation between NaH(ZnPO4)2 and cr-Hopeite via a Solid State Reaction at Low-heating Temperatures

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2008,（10）
• 页码范围: 1837-1842
• 页数: 6页
• 语种: 英文

摘要

A simple and novel route for the synthesis of layered sodium hydrogen zinc phosphate, NaH(ZnPO4)2, was studied, and the target product was obtained with Na2HPO4·12H2O and Zn(NO3)2·6H2O as raw materials and polyethylene glycol-400 as a surfactant via a one step solid state reaction at 60℃ . The product was characterized with XRD, TG/DTG and FTIR. The experimental results showed that the NaH(ZnPO4)2 had only one major step of weight loss for dehydration of HPO42- into P2O74- ions at around 500℃ , so it had enough thermal stability to use as heterogeneous catalyzer for organic reactions. The comparison experimental results suggested that aging temperature control the products of the synthesis, that is, the NaH(ZnPO4)2 was formed when the reaction mixture was aged at 60℃, and theα-Zn3(PO4)2·4H2O was obtained when the reaction mixture was aged at room temperature.