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Preparation and activity of Cu/ZnO-CNTs nano-catalyst on steam reforming of methanol

Paper ID Volume ID Publish Year Pages File Format Full-Text
44127 46004 2007 8 PDF Available
Title
Preparation and activity of Cu/ZnO-CNTs nano-catalyst on steam reforming of methanol
Abstract

A novel Cu/ZnO-CNTs (carbon nano-tubes) nano-catalyst was prepared by a chemical reduction and wet impregnation method, and was applied to catalyze the steam reforming reaction of methanol. If one uses CNT as the support, the CNTs should be pre-treated by nitric acid and sulfuric acid at 60 °C for 24 h to create defects on its surface; the hydrophilicity of CNTs was improved by adding a suitable amount of ethanol. The catalysts were characterized by TEM, XRD, FTIR and TGA. A good dispersion of Cu nano-particles on the surface of CNTs with particle size about 10 nm is identified by TEM analysis. Using 23 wt% Cu80ZnO20-CNTs as the catalyst, we obtained the hydrogen yield for steam reforming of methanol of 83% at 280 °C and near 100% at temperatures higher than 320 °C with 1.5 of molar ratio of water to methanol. The higher hydrogen production (larger than 400mmol/(s kg cat)), higher selectivity of CO2 and lower CO concentration were also observed.

Graphical abstractA novel Cu/ZnO-CNTs (carbon nano-tubes) nano-catalyst was prepared by chemical reduction and wet impregnation method, and was applied to catalyze the steam reforming reaction of methanol.CH3OH + H2O ⇌ CO2 + 3H2XRD analysis of 23 wt% Cu/ZnO-CNTs catalysts; (▾) CNT, (▿) CuO, (♦) ZnO, (●) Cu. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Carbon nano-tubes; Nano-catalyst; Chemical reduction method; Methanol steam reforming
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Preparation and activity of Cu/ZnO-CNTs nano-catalyst on steam reforming of methanol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 317, Issue 2, 7 February 2007, Pages 226–233
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