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Tunable isoparaffin and olefin yields in Fischer–Tropsch synthesis achieved by a novel iron-based micro-capsule catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
54089 46996 2015 6 PDF Available
Title
Tunable isoparaffin and olefin yields in Fischer–Tropsch synthesis achieved by a novel iron-based micro-capsule catalyst
Abstract

•Zeolite micro-capsule catalyst is prepared by in situ crystallization route.•The size of micro-capsule catalyst is 1–2 μm.•The micro-capsule catalyst realizes tandem catalytic synthesis with higher efficient.•The zeolite micro-capsule catalyst exhibits the highest middle isoparaffin selectivity of 46.5%.

A novel iron-based micro-capsule catalyst with interior Fe/Silica core and exterior H-ZSM-5 shell was synthesized via in-situ crystallization route on Fe/SBA-15 catalyst by using steam-assisted crystallization (SAC) process and evaluated for direct synthesis of middle isoparaffin from syngas in a fixed-bed reactor. Structure characterization indicated that the size of micro-capsule catalyst was about 1–2 μm. According to activity test results, original Fe/SBA-15 catalyst exhibited a low selectivity of isoparaffin as 8.2%. But the as-prepared micro-capsule catalyst achieved an excellent performance for isoparaffin synthesis with the selectivity up to 46.5%. Meanwhile, the physical mixture catalyst (Fe/SBA-15 and H-ZSM-5) exhibited lower isoparaffin selectivity with 33.9% than that of the micro-capsule catalyst. The spatial confinement effect of the micro-capsule catalyst played an important role for the high selectivity of isoparaffin synthesis.

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Keywords
Fischer–Tropsch synthesis; Iron; Micro-capsule catalyst; Spatial confinement effect; Isoparaffin
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Tunable isoparaffin and olefin yields in Fischer–Tropsch synthesis achieved by a novel iron-based micro-capsule catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 251, 1 August 2015, Pages 41–46
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us