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Catalytic performance and attrition strength of spray-dried iron catalysts for slurry phase Fischer–Tropsch synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
41839 45901 2010 8 PDF Available
Title
Catalytic performance and attrition strength of spray-dried iron catalysts for slurry phase Fischer–Tropsch synthesis
Abstract

Three iron Fischer–Tropsch (F–T) catalysts (100 Fe/3 Cu/5 K/16 SiO2 in parts by weight) in the form of micro-spherical particles were prepared by spray drying. Their particle size distribution was rather broad, ranging from 5 to 40 μm in diameter, regardless of the source of silica (colloidal silica, tetraethyl orthosilicate, or potassium silicate) employed in their preparation. Catalyst prepared employing colloidal silica had the highest attrition strength among all catalysts studied. After 345 h of testing in a stirred tank slurry reactor its morphology remained essentially unchanged, and it experienced small reductions in the volume mean diameter (5.4%) and generation of particles smaller than 10 μm in diameter was very small (0.7%). Catalytic performance of these catalysts during F–T synthesis was excellent. Syngas conversion was between 71 and 76%, whereas methane selectivity was between 2.0 and 3.5% and that of C5+ hydrocarbons was 78–89% (on C-atom basis).

Graphical abstract. Three iron Fischer–Tropsch (F–T) catalysts were prepared by spray drying. Catalyst prepared employing colloidal silica had the highest attrition strength among all catalysts studied. After 345 h of F–T synthesis in a stirred tank slurry reactor (STSR) it retained its micro-spherical particle morphology. Catalytic performance of these catalysts during F–T synthesis was excellent (methane selectivity 2.0–3.5% and C5+ hydrocarbons 78–89% on C-atom basis).Figure optionsDownload full-size imageDownload high-quality image (165 K)Download as PowerPoint slideResearch highlights▶ Micro-spherical Fe F–T catalysts were prepared by spray drying. ▶ Catalytic performance was evaluated in a stirred tank slurry reactor (STSR). ▶ One of the catalysts retained micro-spherical shape after F–T reaction in the STSR. ▶ Catalysts had low methane (1.8–3.5%) and high C5+ hydrocarbon selectivity (75–89%).

Keywords
Fischer–Tropsch synthesis; Iron catalyst; Spray drying; Stirred tank slurry reactor; Attrition strength
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Catalytic performance and attrition strength of spray-dried iron catalysts for slurry phase Fischer–Tropsch synthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 388, Issues 1–2, 20 November 2010, Pages 240–247
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