| 학회 |
한국화학공학회 |
| 학술대회 |
2008년 가을 (10/23 ~ 10/24, 부산 BEXCO) |
| 권호 |
14권 2호, p.3493 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Structure and Catalytic Performance of Ni2P/MCM-41 Catalysts |
| 초록 |
Nickel phosphide (Ni2P) catalysts supported on silica and MCM-41 showed high HDS activity for 4,6-DMDBT compared to a commercial Ni-Mo-S/Al2O3 catalyst at 573 K (300 oC) and 613 K (340 oC) and 3.1 MPa based on equal sites loaded in the reactor.The desulfurization was dominated by the hydrogenation pathway over the Ni2P catalysts and showed less inhibition by S and N-compounds compared to the sulfide catalysts.Selectivity and performance was higher on the more dispersed catalysts in the order Ni2P/MCM-41 ＞ Ni2P/SiO2-L and this is attributed to the increase in the number of and quality of active sites.Smaller Ni2P particles have better resistance to S and N compounds due to the stronger interaction between Ni and P in the dispersed Ni2P phase.EXAFS line shape analysis indicates the formation of a phospho sulfide phase which is favored for the catalysts with shorter Ni-Ni bond length particularly under high S in feed and at relatively high temperature.The phase is responsible for the high activity of the nickel phosphide catalysts. |
| 저자 |
이용걸1, 조계성1, 전진우1, S.Ted Oyama2
|
| 소속 |
1단국대, 2Department of Chemical Engineering |
| 키워드 |
hydrotreating; Ni2P; EXAFS
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
