| 학회 |
한국화학공학회 |
| 학술대회 |
2018년 가을 (10/24 ~ 10/26, 대구 EXCO) |
| 권호 |
24권 2호, p.1431 |
| 발표분야 |
분리기술(Separation Technology) |
| 제목 |
Highly selective separation of Pd2+ and Pt4+ using novel oxathia-crown ethers: Experimental and DFT complexation studies |
| 초록 |
Novel oxathia-crown ethers (CE) derivatives were successfully synthesized via cyclization of bis-epoxides with 1,2-benzenedithiol using trimethylamine catalyst and metal template in water. Liquid-liquid extraction (LLE) was performed to evaluate the CE complexations with Pd2+ and Pt4+. Among the CEs, 2HDBS214C4 (2i) exhibited the highest Pd2+ selectivity even in the presence of other platinum- or precious group metals (Pt4+, Ru3+, Rh3+, Au3+). DFT studies reveal that 2i has the most compatible cavity dimension (ØCE=1.58 Å) with Pd2+ (ØPd2+ = 1.56 Å) and the most stable complex based on binding energy calculations. NMR analysis demonstrates that S heteroatoms of 2i participated in 1:1 CE-Pd2+ coordination. The results demonstrate its applicability as selective extractant for the separation of Pd2+ and Pt4+ in secondary automobile catalyst waste. This work was supported by NRF funded by the Korea government funded by the Ministry of Science and ICT (2017R1D1A1B03028102 and 2017R1A2B2002109) and Ministry of Education(2009-0093816 and 22A20130012051(BK21Plus)). |
| 저자 |
Khino Parohinog1, Grace Nisola2, 민상훈1, 한정우2, 이성풍3, 정욱진4, Torrejos Rey Eliseo3
|
| 소속 |
1Dept. of Energy Science and Technology, 2명지대, 3Dept. of Chemical Engineering, 4서울시립대 |
| 키워드 |
추출 |
| E-Mail |
|
| 원문파일 |
초록 보기 |
