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Promoting effect of Fe in oxidative dehydrogenation of ethylbenzene to styrene with CO2 (I) preparation and performance of Ce1 − xFexO2 catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
50029 46777 2014 4 PDF Available
Title
Promoting effect of Fe in oxidative dehydrogenation of ethylbenzene to styrene with CO2 (I) preparation and performance of Ce1 − xFexO2 catalyst
Abstract

•The formation of Ce–Fe solid solutions could create more oxygen vacancies.•Oxygen vacancies can promote the absorption and activation of CO2.•The high transmission capacity of oxygen promoted the activity of catalysts.

To improve the lattice structure of CeO2 and the transmission capacity of oxygen, Ce1 − xFexO2(x ≤ 0.2)solid solutions were prepared by a hydrothermal method and used in oxidative dehydrogenation of ethylbenzene to styrene with CO2. Ce1 − xFexO2 solid solutions were characterized by powder X-ray diffraction, Raman spectroscopy, N2-adsorption, H2 temperature-programmed reduction and H2–O2 titration. Results showed that approximately 20% of Fe3 + could dissolve into the CeO2 lattice while portions of Fe2O3 were highly dispersed on the surface of the Ce1 − xFexO2 solid solution. The formation of Ce–Fe solid solutions could create more oxygen vacancies to promote the absorption and activation of CO2, which improves the activity of the catalyst and increased ethylbenzene conversion by as much as 13%.

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Keywords
CeO2; Fe doping; Ce1 − xFexO2 solid solution; Ethylbenzene dehydrogenation; CO2
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Promoting effect of Fe in oxidative dehydrogenation of ethylbenzene to styrene with CO2 (I) preparation and performance of Ce1 − xFexO2 catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 50, 5 May 2014, Pages 21–24
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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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