cu系湿式氧化催化剂的制备及降解苯酚的活性研究-材料物理与化学专业毕业论文.docx

哈尔滨理工大学工学硕士学位论文
关键词催化湿式氧化;氧化铜;Ce02;苯酚
哈尔滨理工大学工学硕士学位论文
Study on the preparation and the activity in phenol degradationof Cu series wet oxidation catalyst
Abstract
Wet air oxidation(WAO)is one technology for the treatment of hazardous, toxic and high anic wastewater under the high temperature(125— 320。O)and pressure(—20MPa).However,the severe operation conditions have restricted it from being widely wet oxidation technique(CWAO) gains great attention for it could decrease reaction temperature and press,shorten reaction time and raise oxidation efficiency,SO the development of catalysts with high activity and stability has been focally researched and e the key point of CWAO application.
In this paper,load type catalyst CuO/7-A1203 was prepared by soakage The technical conditions such as concentration of the soakage solution,soakage time, calcination temperature,calcination time,etc were optimized,and the optimum conditions was determined as follows:concentration of CuS04 is 6%,soakage temperature is 30℃,soakage time is temperature is 400"C,
calcination time is 4h。Applied this techinics to CWAO of phenol and optimized
the processing parameters such as reaction temperature,oxygen partial pressure, intension of stir and dosage of the optimized conditions was get as follows:reaction temperature is 180。C,oxygen partial pressure is 3MPa, intension of stir is 600r/min and dosage of the catalyst is 29/L。XRD,XPS,SEM were used to investigate the relationship between the surface microstructure and catalytic activity and that between the reusing times and catalytic activity of CuO/1,-A1203,The results showed that the decreasing of the catalytic activity
should be ascribed to the phase change of the support and the formation of a new
complex Cu,A1204 in high temperature.
Chosen Ce as the aids,the doping modification of CuO/7-A1203 catalyst was
proceeded then CuO-Ce02/7-A1203 catalyst was prepared by
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