Journal
CATALYSIS SCIENCE & TECHNOLOGY
Volume 4, Issue 4, Pages 1005-1011Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cy00745f
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Funding
- National Natural Science foundation of China [21073238, 21203253, 21203255]
- National Basic Research Program of China [2011CB211704]
- Key Program of Technology Innovation of Hubei Province [2013AGB002]
- Special Fund for Basic Scientific Research of Central Colleges, South-Central University for Nationalities [YZZ12001]
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Highly ordered mesoporous Al-SBA-15 materials with high Al/Si ratios (0.2, 0.5 and 1.0) have been synthesized by a modified pH-adjusting method, and ruthenium catalysts supported on the Al-SBA-15 were prepared by incipient wetness impregnation and tested in a fixed bed reactor at high temperature (250 degrees C) in order to study their bifunctional catalytic performance in Fischer-Tropsch synthesis. The samples were characterized by ICP-AES, XRD, Al-27 MAS NMR, N-2 physisorption, NH3-TPD, TEM, TPR and IR spectroscopy of adsorbed pyridine. The results showed that the selectivities of hydrocarbons were significantly influenced by Al/Si ratio in the support. The 4Ru(1.0) catalyst with Al/Si ratio of 1.0 exhibited typical bifunctional properties in Fischer-Tropsch synthesis, lower selectivity (24.9%) of heavy hydrocarbons (C-13+) and much higher selectivities of olefins and iso-paraffins were found in the products.
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