Role of hydrogen in catalytic dehydrogenation: Film diffusion controlled deactivation |
| |
Authors: | N George B V Kamath A G Basrur and K R Krishnamurthy |
| |
Institution: | (1) Department Chemistry, M.S. University of Baroda, 390 002 Baroda, India;(2) Research Centre, Indian Petrochemicals Corporation, Ltd., 391 346 Baroda, India |
| |
Abstract: | The function of hydrogen used as carrier gas in catalytic dehydrogenation is to increase the selectivity and stability of
catalysts. It slows down catalyst deactivation by either inhibiting deposition of potential coke precursors or facilitating
their desorption by rehydrogenation. This function, in gas-solid catalytic dehydrogenation appears to be interphase mass transfer
controlled by increased hydrogen linear flow velocities decreasing the extent of deactivation. Besides, deactivation appears
to progress through two regimes, an initial short term followed by a long term deactivation. |
| |
Keywords: | Pt− Sn/Al2O3 dehydrogenation deactivation |
本文献已被 SpringerLink 等数据库收录! |
|