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Stabilized ordered-mesoporous Co3O4 structures using Al pillar for the superior CO hydrogenation activity to hydrocarbons

Paper ID Volume ID Publish Year Pages File Format Full-Text
45229 46407 2016 11 PDF Available
Title
Stabilized ordered-mesoporous Co3O4 structures using Al pillar for the superior CO hydrogenation activity to hydrocarbons
Abstract

•Metal oxide pillared ordered-mesoporous Co3O4 showed superior FTS activity and stability.•Al2O3-pillared meso-Co3O4 showed excellent stability by forming stronger interaction.•Al2O3 modification can effectively stabilize ordered-mesoporous structures by acting as an ordered mesoporous channel reactor.

The metal oxide pillared ordered-mesoporous Co3O4 was investigated to design a stable and superior catalyst for CO hydrogenation into linear hydrocarbons through Fischer–Tropsch Synthesis (FTS) reaction. Enhanced structural stability was observed in ordered-mesoporous Co3O4 even under hydrogen-excess conditions after modification with a metal oxide pillar of Al2O3. The mesoporous Co3O4 was synthesized using a hard template of highly ordered three dimensional mesoporous KIT-6. A small number of metal oxide pillars such as Al2O3, Mn2O4, and SiO2 with 5 wt% were subsequently added to the ordered-mesoporous Co3O4 through the incipient wetness impregnation method. The Al2O3-modifed mesoporous Co3O4 catalyst demonstrated superior CO conversion with a stable activity in CO hydrogenation reaction. The enhanced catalytic stability seems to be attributable to the lower mobility of the Al2O3 pillar which formed stronger interactions with the mesoporous Co3O4 inner surfaces. The Al2O3 modification can effectively stabilize ordered-mesoporous structures of Co3O4 by acting as an ordered mesoporous channel reactor and enhancing the transport rate of hydrocarbons formed during FTS reaction.

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Keywords
Fischer–Tropsch synthesis; Ordered-mesoporous Co3O4; Al2O3 pillar; Structural stability; Mesoporous channel reactor
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Stabilized ordered-mesoporous Co3O4 structures using Al pillar for the superior CO hydrogenation activity to hydrocarbons
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 180, January 2016, Pages 139–149
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