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Metal oxides modified NiO catalysts for oxidative dehydrogenation of ethane to ethylene

Paper ID Volume ID Publish Year Pages File Format Full-Text
54128 46998 2014 7 PDF Available
Title
Metal oxides modified NiO catalysts for oxidative dehydrogenation of ethane to ethylene
Abstract

•The sol–gel method was extended to the preparation of Zr, Ti, Mo, W, and V modified NiO catalysts for the ethane oxidative dehydrogenation reaction. The metal oxide modification results in a significant effect on the catalytic performance of NiO based catalysts in ethane ODH reaction. The transition metal doped NiO catalysts have different level of activity and selectivity in this reaction, which is dependent on the nature of doping metal. Among these five catalysts the Ni–Ti–O and Ni–W–O show high ethylene selectivity; thus, the improved ethylene production efficiency is obtained in these two catalysts.

The sol–gel method was applied to the synthesis of Zr, Ti, Mo, W, and V modified NiO based catalysts for the ethane oxidative dehydrogenation reaction. The synthesized catalysts were characterized by XRD, N2 adsorption, SEM and TPR techniques. The results showed that the doping metals could be highly dispersed into NiO domains without the formation of large amount of other bulk metal oxide. The modified NiO materials have small particle size, larger surface area, and higher reduction temperature in contrast to pure NiO. The introduction of group IV, V and VI transition metals into NiO decreases the catalytic activity in ethane ODH. However, the ethylene selectivity is enhanced with the highest level for the Ni–W–O and Ni–Ti–O catalysts. As a result, these two catalysts show improved efficiency of ethylene production in the ethane ODH reaction.

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Keywords
Ethane oxidative dehydrogenation; NiO catalyst; Doped metal oxide; Ethylene production
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Metal oxides modified NiO catalysts for oxidative dehydrogenation of ethane to ethylene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 228, 1 June 2014, Pages 58–64
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