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Synthesis of C2-oxygenates from syngas over Rh-based catalyst supported on SiO2, TiO2 and SiO2–TiO2 mixed oxide

Paper ID Volume ID Publish Year Pages File Format Full-Text
50579 46803 2012 5 PDF Available
Title
Synthesis of C2-oxygenates from syngas over Rh-based catalyst supported on SiO2, TiO2 and SiO2–TiO2 mixed oxide
Abstract

SiO2, TiO2 and SiO2–TiO2 mixed oxide were synthesized by sol–gel method and used as supports for Rh-based catalysts. The effect of support on the performance of Rh-based catalysts for C2-oxygenates synthesis from syngas was investigated by XRD, N2 adsorption-desorption, FT-IR, H2-TPD, H2-TPR and TPSR techniques. The results indicated that SiO2–TiO2 supported catalyst had higher dispersion of Rh and thus more Rh+ sites, better capability for CO adsorption and dissociation, and moderate ability for hydrogenation. As a result, SiO2–TiO2 supported Rh-based catalyst exhibited higher activity and C2 oxygenates selectivity compared with counterparts supported on TiO2 and SiO2.

Graphical abstractAmong Rh-based catalysts supported SiO2, TiO2 and SiO2–TiO2 mixed oxide, SiO2–TiO2 supported catalyst exhibits best catalytic activity toward C2 oxygenates.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► SiO2–TiO2 supported catalyst is more effective for the formation of C2 oxygenates. ► SiO2–TiO2 supported catalyst has higher dispersion of Rh which leads to more Rh+ sites. ► SiO2–TiO2 supported catalyst has excellent capability for CO dissociation. ► SiO2–TiO2 supported catalyst has moderate ability for hydrogenation.

Keywords
Syngas; C2 oxygenates; Rh-based catalysts; SiO2–TiO2 mixed oxide
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Synthesis of C2-oxygenates from syngas over Rh-based catalyst supported on SiO2, TiO2 and SiO2–TiO2 mixed oxide
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 23, 5 June 2012, Pages 20–24
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