欢迎访问过程工程学报, 今天是

›› 2005, Vol. 5 ›› Issue (6): 648-650.

• 过程与工艺 • 上一篇    下一篇

不同水热温度下脂肪族多元醇对还原Cu2+产物的影响

陈庆春,刘晓东,邓慧宇   

  1. 东华理工学院材料科学与工程系
  • 出版日期:2005-12-20 发布日期:2005-12-20

Influence of Aliphatic Polyols on the Products Reduced from Cu2+ at Different Hydrothermal Temperatures

CHEN Qin-chun,LIU Xiao-dong,DENG Hui-yu   

  1. Department of Materials Science and Engineering, East China Institute of Technology
  • Online:2005-12-20 Published:2005-12-20

PDF

被引次数

4

摘要： 以CuSO4×5H2O和NaOH为原料，核糖醇、木糖醇和山梨醇3种脂肪族多元醇为还原剂，X射线衍射和扫描电镜为表征手段，研究了80, 150, 180℃水热温度下铜的还原. 结果表明，80℃时，产物都是Cu2O，添加核糖醇和木糖醇时是大小不等的八面体，添加山梨醇时生长为大八面体；150℃时，产物都是Cu2O，添加核糖醇时是八面体及棱角较圆滑的去顶八面体，添加木糖醇和山梨醇时是大小不等的八面体；180℃时，产物都是Cu，添加核糖醇时多为小颗粒组成的球形，添加木糖醇时是大小不等的无序颗粒，添加山梨醇时为小颗粒组成的八面体，且棱角有一些较大的颗粒排列. 可初步认为，3种多元醇的还原能力依次为核糖醇>木糖醇>山梨醇，且还原反应先生成Cu2O，随温度升高，再被还原成Cu.

关键词: 脂肪族多元醇, Cu2+还原, 水热温度, 氧化亚铜, Cu

Abstract: With CuSO4×5H2O and NaOH as main sources, three kinds of aliphatic polyols such as adonitol, xylitol and D-sorbitol as reductives, via XRD and SEM the reduction of Cu2+ was studied at different hydrothermal temperatures of 80, 150 and 180℃, respectively. The results show that all the products are Cu2O at 80℃ and their morphologies are different size octahedrons with addition of adonitol and xylitol, and octahedron at large sizes only with addition of D-sorbitol; at 150℃, the products are all Cu2O too, they are octahedrons and angle-free octahedrons with addition of adonitol and different size octahedrons with addition of xylitol and D-sorbitol; while the temperature is 180℃, the products are all Cu, and they are spheres consisting of small particles when adonitol added, not ordered particles with addition of xylitol, and octahedrons consisting of small particles when D-sorbitol added. It is concluded that the reductive ability order is adonitol>xylitol>D-sorbitol and the Cu forms after Cu2O.

Key words: aliphatic polyols, reduction of Cu2+, hydrothermal temperature, Cu2O, Cu