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The effect of acetic acid pretreatment for cobalt catalysts prepared from cobalt nitrate

Paper ID Volume ID Publish Year Pages File Format Full-Text
53113 46911 2007 4 PDF Available
Title
The effect of acetic acid pretreatment for cobalt catalysts prepared from cobalt nitrate
Abstract

The effects of acetic acid pretreatment for dried catalysts prepared from cobalt nitrate were investigated. Cobalt catalyst prepared from cobalt nitrate, followed by treatment of 2.2 M acetic acid, namely CoN/2.2Ac catalyst, showed the highest CO conversion as well as the lowest CO2 and CH4 selectivities in liquid-phase Fischer–Tropsch synthesis. On the contrary, cobalt catalyst prepared from cobalt acetate exhibited poor catalytic activity due to very low reduction degree of supported cobalt. The higher catalytic activity for CoN/2.2Ac catalyst could be ascribed to the formation of the mixture of cobalt nitrate and cobalt acetate with suitable ratio between them during acetic acid treatment, which led to an optimum balance between the dispersion and reduction degree of supported cobalt, eventually realizing the higher catalytic activity. Various catalysts were characterized by XRD, TPR and H2 chemisorption.

Keywords
Fischer–Tropsch synthesis; Co/SiO2 catalyst; Acetic acid; Cobalt precursor; Syngas
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The effect of acetic acid pretreatment for cobalt catalysts prepared from cobalt nitrate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 5, May 2007, Pages 773–776
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
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