Adsorption and reaction studies on cobalt/alumina catalysts prepared by changing pH coprecipitation

作者: A. Nilgün Akin , A. Erhan Aksoylu , Z. Ilsen Önsan

DOI: 10.1007/BF02475818

关键词:

摘要: Co/Al2O3 catalysts prepared by changing pH coprecipitation with Co loadings in the 8.7–36 wt.% range were analyzed TSA, TPV, pore structure, XRD as well CO, H2, O2 adsorption and CO hydrogenation. High uptake reducibility coupled low dispersion constant MSA above 17 indicate large crystallites that are less exposed to H2. hydrogenation per site decreases increasing or decreasing metal loading.

参考文章(13)
Z. İlsen Önsan, A. Erhan Aksoylu, A. Nilgün Akin, S. Gönenç Sunol, The Effect of Metal Loading on the Adsorption Parameters of Carbon Dioxide on Coprecipitated Nickel-Alumina Catalysts Turkish Journal of Chemistry. ,vol. 20, pp. 88- 94 ,(1996)
Roland L. Chin, David M. Hercules, Surface spectroscopic characterization of cobalt-alumina catalysts The Journal of Physical Chemistry. ,vol. 13, pp. 360- 367 ,(1982) , 10.1021/J100392A016
Sandra Bessell, Support effects in cobalt-based fischer-tropsch catalysis Applied Catalysis A-general. ,vol. 96, pp. 253- 268 ,(1993) , 10.1016/0926-860X(90)80014-6
A. Nilgün Akın, Z. İlsen Önsan, Kinetics of CO hydrogenation over coprecipitated cobalt-alumina Journal of Chemical Technology & Biotechnology. ,vol. 70, pp. 304- 310 ,(1997) , 10.1002/(SICI)1097-4660(199711)70:3<304::AID-JCTB766>3.0.CO;2-D
Ruud Snel, Olefins from Syngas Catalysis Reviews-science and Engineering. ,vol. 29, pp. 361- 445 ,(1987) , 10.1080/01614948708078612
R Zhang, JA Schwarz, A Datye, JP Baltrus, The effect of second-phase oxides on the catalytic properties of dispersed metals: Cobalt supported on 12% WO3/Al2O3 Journal of Catalysis. ,vol. 135, pp. 200- 222 ,(1992) , 10.1016/0021-9517(92)90280-U
S. Narayanan, R. Unnikrishnan, V. Vishwanathan, Nickel-alumina prepared by constant and varying pH method: Evaluation by hydrogen-oxygen chemisorption and aniline hydrogenation Applied Catalysis A-general. ,vol. 129, pp. 9- 19 ,(1995) , 10.1016/0926-860X(95)00087-9
G Leofanti, M Padovan, G Tozzola, B Venturelli, Surface area and pore texture of catalysts Catalysis Today. ,vol. 41, pp. 207- 219 ,(1998) , 10.1016/S0920-5861(98)00050-9
Calvin H Bartholomew, Robert J Farrauto, Chemistry of nickel-alumina catalysts Journal of Catalysis. ,vol. 45, pp. 41- 53 ,(1976) , 10.1016/0021-9517(76)90054-3