Dechlorination degradation of 3-chlorophenol with Pd/Al bimetallic system
1. Introduction Hydrodechlorination (HDC) technology has been proved an effective degradation method for chloroorganic compounds (COC) in contaminated water. For COC degradation, HDC often employs the Pd-based bimetallic system mostly using palladized iron (Pd/Fe) particles to treat aqueous COC due to the relatively low cost, easy availability, and broad applicability of zero-valent iron (ZVI). Although Pd/Fe bimetallic particles can effectively remove COC in contaminated water, the material may not be stable for an extended run owing to ZVI corrosion. The uncontrollable corrosion would cause loss of catalyst base, iron oxide precipitation, and excessive H2 formation, which further lead to the deactivation of Pd/Fe. Recently, new attempts were made by selecting other metal substrates to replace Fe for HDC in Pd-based bimetallic systems, including Mg, Zn, or nanoscale Sn particles. In this work, Al was selected as the substrate for preparing Pd-based bimetallic material. In addition, Al is the most abundant metal element in the earth; moreover, zero-valent Al has a low standard electrode potential.
Yang Bo Zhang Feng-Zhen
School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen, 518060
国际会议
北京
英文
176-177
2011-11-24（万方平台首次上网日期，不代表论文的发表时间）