作　　者： ; ; ; ; ;

机构地区： 广东工业大学轻工化工学院

出　　处： 《无机盐工业》 2005年第7期15-17,共3页

摘　　要： 一步水热法是将氧氯化锆和氨水按比例混和后,直接加入高压反应釜中进行水热反应的工艺。由于不需要经过前驱物的制备流程,简化了工艺,由于原料中引入的NH+4及Cl-在水热反应中起到了矿化剂的作用,与传统工艺比较,产物的晶化程度提高。通过单因素优化实验,较佳的工艺条件为:氧氯化锆的浓度为0.5～1mol/L,氨水质量分数13%～25%,反应混合物的pH为9～10,水热温度180～200℃,水热压力1.0～1.5MPa,保温2～3h,产品的平均粒度约10nm。 One-step hydrothermat method is that ZrOCl_2·8H_2O solution and ammonia water are mixed in proportion and then added directly into autoclave to reaction.Because the preparation of the precursor is not needed,so the process is simplified and the NH^+_4 and Cl^- in the raw material are acted as a mineralizer in the hydrothermal reaction,thus the crystallinity of the product can be increased.By single factor optimization experiment,the optimum process conditions are as follows:the concentration of ZrOCl_2·8H_2O and ammonia water is 0.5~1 mol/L and 13%~15%(wt%) respectively,the reaction pH is 9~10,the hydrotherimal temperature and pressure is 180~200 ℃ and (0.10~0.12) MPa respectively,the reaction time is 2~3 h and the average size of the product is about 10 nm.

关 键 词： 纳米二氧化锆 一步水热法 氧氯化锆

领　　域： [化学工程]