Structure Sensitivity in the Hydrodechlorination of Chlorophenols |
| |
Authors: | Eun-Jae Shin and Mark A Keane |
| |
Institution: | (1) Department of Chemical Engineering, The University of Leeds, Leeds, LS2 9JT, UK E-mail: |
| |
Abstract: | The gas phase hydrodechlorination of methanolic and mixed methanol/water solutions of 2-chlorophenol, 2,6-dichlorophenol, 2,4,5-trichlorophenol and pentachlorophenol has been studied at 573 K over nickel/silica catalysts of varying (1.5–20.3 wt.% Ni) nickel loading. Each catalyst was 100% selective in promoting hydrodechlorination: the variation of catalytic activity and selectivity with time-on-stream is illustrated and catalyst deactivation is addressed. Dechlorination is quantified in terms of specific rate constants, phenol selectivity/yield and chlorine removal efficiencies. Increasing the nickel loading resulted in a marked increase in dechlorination efficiency while the introduction of water into the feed lowered the activity. |
| |
Keywords: | Catalytic hydrodechlorination nickel/silica structure sensitivity |
本文献已被 SpringerLink 等数据库收录! |
|