| 학회 | 한국화학공학회 |
| 학술대회 | 2020년 가을 (10/14 ~ 10/16, e-컨퍼런스) |
| 권호 | 26권 1호, p.778 |
| 발표분야 | 촉매 및 반응공학 |
| 제목 | Unraveling the reaction pathway and rate-determining step of aqueous formic acid dehydrogenation reaction over Pd/C |
| 초록 | Formic acid (HCOOH), which can be decomposed to H2 and CO2, is considered a promising hydrogen source/hydrogen-carrier-material. Thus, many studies have elaborated to develop highly active catalysts for dehydrogenation of formic acid to produce hydrogen. However, there is still a lack of understanding formic acid dehydrogenation (FAD) reaction itself (e.g. reaction pathway and rate-determining step). Herein, we prepared Pd/C catalysts with ultra-fine Pd particles (~ 2nm) by using trisodium citrate as a stabilizing agent. A series of aqueous FAD reaction and DFT calculation could demonstrate that the reaction pathway of FAD is a formate anion dehydrogenation pathway, not a formic acid dehydrogenation pathway. In addition, further computational prediction combined with kinetic isotope effect experiments verified that combinative desorption of hydrogen is the rate-determining step of FAD. These results would provide the mechanistic insights for developing advanced catalysts for the aqueous FAD reaction. |
| 저자 | 김용우, 김도희 |
| 소속 | 서울대 |
| 키워드 | 촉매 |
| 원문파일 | 초록 보기 |
