Microwave irradiation technique was used to promote the extraction processes of bromide complex anions of Pt（Ⅱ） and Pd（Ⅱ） from aqueous biphase system of polyethyleneglyol/（NH4）2SO4. The results showed that und...Microwave irradiation technique was used to promote the extraction processes of bromide complex anions of Pt（Ⅱ） and Pd（Ⅱ） from aqueous biphase system of polyethyleneglyol/（NH4）2SO4. The results showed that under microwave irradiation the distribution ratio of metals, extraction capacity and extraction ratio increased significantly as compared with conventional extraction technique. Under microwave irradiation the extraction ratio of Pt or Pd achieved 100.0% and 99.6%, respectively. The non-isothermal kinetics on the extraction reaction also approved the enhanced extraction rate.展开更多
The thermal decomposition behaviour of europium p-chlorobenzoate complex with l, 10-phenanthroline and its kinetics were studied in nitrogen by non-isothermal thermogravimetry. Its thermal decomposition occurs mainly ...The thermal decomposition behaviour of europium p-chlorobenzoate complex with l, 10-phenanthroline and its kinetics were studied in nitrogen by non-isothermal thermogravimetry. Its thermal decomposition occurs mainly in three steps.. The intermediate and residue for each step of decomposition were identified from TG curve. The kinetic parameters were obtained from analysis of the TG-DTG curves by the Achar method. the Madhusudanan- Krishnan-Niman (MKN ) method and Ozawa method respectively. The most probable mechanisms function for the first and second stage were suggested by comparing the kinetic parameters.展开更多
文摘Microwave irradiation technique was used to promote the extraction processes of bromide complex anions of Pt（Ⅱ） and Pd（Ⅱ） from aqueous biphase system of polyethyleneglyol/（NH4）2SO4. The results showed that under microwave irradiation the distribution ratio of metals, extraction capacity and extraction ratio increased significantly as compared with conventional extraction technique. Under microwave irradiation the extraction ratio of Pt or Pd achieved 100.0% and 99.6%, respectively. The non-isothermal kinetics on the extraction reaction also approved the enhanced extraction rate.
基金the National Natural Science Foundation of China(21101127,21073141)National Defense Pre-Research Foundation of China(9140A28020111BQ3401)National Defense Pre-Research Foundation of China(A3120110005)~~
文摘The thermal decomposition behaviour of europium p-chlorobenzoate complex with l, 10-phenanthroline and its kinetics were studied in nitrogen by non-isothermal thermogravimetry. Its thermal decomposition occurs mainly in three steps.. The intermediate and residue for each step of decomposition were identified from TG curve. The kinetic parameters were obtained from analysis of the TG-DTG curves by the Achar method. the Madhusudanan- Krishnan-Niman (MKN ) method and Ozawa method respectively. The most probable mechanisms function for the first and second stage were suggested by comparing the kinetic parameters.
