| 학회 | 한국화학공학회 |
| 학술대회 | 2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 | 22권 2호, p.2178 |
| 발표분야 | 재료 |
| 제목 | Organic Sulfonium-Directed Synthesis of Silicate Zeolite Ananlogues |
| 초록 | Zeolite (i.e., microporous crystalline aluminosilicates) and zeolite analogues are very important materials as adsorbents, molecular sieves, and catalysts in current industries and science. Most zeolites are hydrothermally synthesized using ammonium cations as structure-directing agents (SDAs). Cyclic ethers, metal complexes, and phosphonium cations are also used, although uncommon. In this contribution, we show that sulfonium cations can be employed as SDAs for the synthesis of silicate zeolite analogues. We synthesized a crystalline silicate zeolite of MEL structure type and three other zeolite analogues composed of germanosilicate frameworks using tributylsulfonium, triphenylsulfonium, tri-p-tolylsulfonium. Among them, one germanosilicate was obtained with a new zeolite structure, which was solved using X-ray powder diffraction with the aid of charge-flipping method. The organosulfonium cations are quite stable under the zeolite synthesis condition, and are readily removed from the zeolite framework by air or ozone calcination. We believe that the organosulfonium cations would give a great opportunity to synthesize new zeolite and zeolite analogues. |
| 저자 | 조창범1, 이승준2, 조성준3, 유 룡1 |
| 소속 | 1기초과학(연), 2한국과학기술원, 3전남대 |
| 키워드 | 화공나노소재 |
| 원문파일 | 초록 보기 |
