Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
71954 | Microporous and Mesoporous Materials | 2016 | 8 Pages |
•The uniformly sized zeolite microspheres with 0.5–1 μm was synthesized successfully.•C12+ selectivity was effectively suppressed in aggregated nanorods zeolite.•Isoparaffin selectivity was obviously improved by hierarchical zeolite structure.•The selectivity of the isoparaffin reached 30.9% with the hierarchically-structured catalyst.
A hierarchically spherical Co based zeolite catalyst with aggregated nanorods structure (simplified as Co/AN-Z) was prepared by an in-situ self-assembly crystallization route of Co/SBA-15 under hydrothermal synthesis environment. The obtained Co/AN-Z catalyst with uniformly sized zeolite microspheres with 0.5–1 μm was evaluated for improved Fischer–Tropsch synthesis (FTS) reaction activity and isoparaffin selectivity. The selectivities of isoparaffin and C5-11 hydrocarbons were higher with a narrower product distribution as well as CH4 and C12+ selectivities were lower on the Co/AN-Z catalyst than those on the commercial HZSM-5 supported Co catalyst (Co/HZSM-5) for FTS reaction. The demonstrated route of the hierarchically spherical Co based zeolite catalyst can be extended to synthesize bifunctional catalyst and expected to find a new approach for tandem reaction.
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