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Direct synthesis of LPG from carbon dioxide over hybrid catalysts comprising modified methanol synthesis catalyst and β-type zeolite☆

Paper ID Volume ID Publish Year Pages File Format Full-Text
39829 45837 2014 6 PDF Available
Title
Direct synthesis of LPG from carbon dioxide over hybrid catalysts comprising modified methanol synthesis catalyst and β-type zeolite☆
Abstract

•CZZA/Pd-β catalyst was effective for LPG synthesis.•Reaction pathway of CO2 to LPG was expressed.•Iso-butane can be obtained in extra-ordinary high selectivity.

Hydrogenation of carbon dioxide to C3 and C4 paraffins (LPG) was studied by using hybrid catalysts composed of Zr-modified Cu–Zn catalyst with Pd-modified β zeolite. Various factors that affect catalyst activity, including reaction temperature, space velocity, pressure, and the ratio of H2 to CO2 were investigated thoroughly. The hybrid catalysts exhibited stable activity over 100 h and extraordinary high selectivity of LPG synthesis (especially iso-butane) even under low temperature (260 °C) and low pressure (2 MPa). Conversion of CO2 and the yield of hydrocarbon reached 25.2% and 13.3%, respectively, while keeping the selectivity of LPG and CH4 75% and 1%, respectively. The iso-butane/n-butane ratio was about 16/1, whose value was much higher than that of thermodynamic equilibrium (about 1/1).

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Keywords
Carbon dioxide; Iso-butane; Hybrid catalysts
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Direct synthesis of LPG from carbon dioxide over hybrid catalysts comprising modified methanol synthesis catalyst and β-type zeolite☆
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 475, 5 April 2014, Pages 155–160
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