PREPARATION OF DIFFERENT POLYOXOMETALATES AND APPLICATION IN ELECTROCHEMICALLY MEDIATED DELIGNIFICATION OF CHEMICAL PULP
Different polyoxometalates (POMs) were prepared and applied in the electrochemically mediated delignification system (EM) as mediators. The chemical structures and characteristics of these POMs were analyzed as well as the electrochemical properties. The delignification performances of the POM-mediated electrochemical system were discussed. The results showed that different types of POMs had different delignification ratios. When the Ti/RuTiOx was used as anode surface material, the prepared PMO7V5 gave out the highest delignification ratio, 42.0％, among referred POMs and the viscosity loss was only 11.3％. The delignification performance did not have any direct relationship with the cylic voltammogram reversibility of the prepared POM as mediators in this electrochemical delignification system. The type of substituted element in the POM structure affected the electrochemical catalytic capability to some extent.
electrochemical mediated delignification POM poplar kraft pulp
Wu Kejia Wang Shoujuan Kong Fangong Zhan Huaiyu Fu Shiyu Liu Yu
Key Laboratory of Pulp and Paper Engineering of Ministry of Education, Shandong Institute of Light I Key Laboratory of Pulp and Paper Engineering of Ministry of Education, Shandong Institute of Light I State Key Laboratory of Pulp & Paper Engineering,South China University of Technology, Guangzhou,510
国际会议
广州
英文
589-592
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）