Please use this identifier to cite or link to this item:
|Title:||Carbon deposition on borated alumina supported nano-sized Ni catalysts for dry reforming of CH 4|
|Citation:||Ni, J., Chen, L., Lin, J., Kawi, S. (2012-09). Carbon deposition on borated alumina supported nano-sized Ni catalysts for dry reforming of CH 4. Nano Energy 1 (5) : 674-686. ScholarBank@NUS Repository.|
|Abstract:||Borated alumina supported 5wt% Ni catalysts with B 2O 3 loading varying from 0wt%, 1wt%, 5wt% to 10wt% were prepared and characterized by XRD, H 2-TPR, CO 2-TPD, NH 3-TPD, in situ DRIFTS study, and evaluated for dry reforming of methane. The addition of B 2O 3 influences the activity and stability of the catalysts significantly. Ni particle size increases from 5.8 to 9.1nm with increasing the B 2O 3 loading from 0 to 10wt%. In the kinetic control temperature region (700°C) there is no linear relationship between the Ni particle size and the catalyst activity/stability. The formation of strong Lewis acid sites causes severe carbon deposition on 1wt% and 10wt% B 2O 3 loaded Ni catalysts, hence decreasing catalytic activity and stability. The formation of weak Lewis acid sites and O-H groups on 5wt% B 2O 3 promoted Ni catalyst is found to significantly facilitate carbon removal and improve the stability of the catalysts. The reaction mechanism of dry reforming of methane over borated-alumina supported Ni catalysts is proposed, especially the promotional effect of OH groups on the suppression of carbon formation being emphasized. © 2012 Elsevier Ltd.|
|Source Title:||Nano Energy|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 27, 2018
WEB OF SCIENCETM
checked on Apr 23, 2018
checked on Oct 19, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.