Pretreatment of Supported Wacker Catalysts and the Determination of Palladium and Copper
FANG Yi-wen1, 2, DONG Xin-fa1, XUE Liang2, WANG Wen-jin2, LIN Wei-ming1
1. School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510641, China 2. Department of Chemistry, Shantou University, Shantou 515063, China
Abstract：The supported Wacker catalysts were pretreated with two different methods. Then copper and palladium were determined by inductively coupled plasma atomic emission spectrometry(ICP-AES). The results showed that the best pretreatment method is burning-acid dissolving. With this method, the detection limits of Pd and Cu were 3.127 and 2.548 ng·mL-1, the recoveries of standard addition of Pd and Cu were 96.26% and 94.82%, and the relative standard deviations(n=11)of Pd and Cu were less than 1.237% and 1.354%, respectively. The method is efficient, accurate, and easy to operate. Pd and Cu in supported Wacker catalysts, which were sampled before calcination, after calcination and after reaction, were determined by this method, and the contents were compared with calculated values. The percentages were larger than 96.4% and 96.6% respectively. It is considered that the active components did not decrease in preparation and reaction.
方奕文1，2,董新法1,薛亮2,王文进2,林维明1 . 负载型Wacker催化剂的预处理及Pd和Cu含量的测定[J]. 光谱学与光谱分析, 2006, 26(10): 1912-1914.
FANG Yi-wen1, 2, DONG Xin-fa1, XUE Liang2, WANG Wen-jin2, LIN Wei-ming1 . Pretreatment of Supported Wacker Catalysts and the Determination of Palladium and Copper . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(10): 1912-1914.
