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Fischer–Tropsch synthesis catalysed by small TiO2 supported cobalt nanoparticles prepared by sodium borohydride reduction

Paper ID Volume ID Publish Year Pages File Format Full-Text
38843 45793 2016 8 PDF Available
Title
Fischer–Tropsch synthesis catalysed by small TiO2 supported cobalt nanoparticles prepared by sodium borohydride reduction
Abstract

•Small cobalt nanoparticles (1.7 nm) supported on TiO2 resulted very active and stable in the FTS.•CoNPs in the range of 1.7–7 nm were synthesized using NaBH4 and immobilized on TiO2.•The stability of the small CoNPs was attributed to the promoting effect of boron.

Cobalt nanoparticles in the range of 1.7–7 nm were synthesized in water using sodium borohydride as reducing agent and subsequently immobilized on TiO2. Both colloidal and TiO2 supported NPs were characterized by TEM, XRD, HRTEM, XPS, TGA, ICP techniques and their catalytic performance of the supported catalysts evaluated in the Fischer–Tropsch synthesis. As a general trend, an increase in activity and TOF was observed when the particle size decreased. These results were rationalized by the higher reducibility of the catalysts bearing the smaller nanoparticles. The unconventional stability of these relatively small CoNPs in FTS was attributed to the promoting effect of boron on the stability of the cobalt nanocrystals.

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Keywords
Fischer–Tropsch synthesis; Cobalt nanoparticles; Sodium borohydride; Titanium oxide; Boron promotion
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Fischer–Tropsch synthesis catalysed by small TiO2 supported cobalt nanoparticles prepared by sodium borohydride reduction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 513, 5 March 2016, Pages 39–46
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
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Price after discount Only $4.95
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Full-text PDF Download
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