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Preparation of shaped magnesium oxide/carbon catalysts using rice grains as an exotemplate and carbon precursor

Paper ID Volume ID Publish Year Pages File Format Full-Text
40214 45846 2013 10 PDF Available
Title
Preparation of shaped magnesium oxide/carbon catalysts using rice grains as an exotemplate and carbon precursor
Abstract

•An in situ transformation technique was used to prepare biomorphic shaped MgO/C.•Nonporous rice particle was used as exotemplate and C precursor.•The biomorphic shaped MgO/C materials exhibit good catalytic performance.

Biomorphic magnesium oxide and magnesium oxide/carbon catalysts have been synthesized via an in situ transformation technique using rice grains as a template and carbon precursor. During preparation, MgO precursors are dispersed on the surface of rice grains with the aid of the rice-cooking process, and further transformed into solid bases upon calcination. Biomorphic MgO/carbon materials are formed when calcination is performed in a nitrogen atmosphere. These particles are spindle shaped catalysts with a circumference of several millimeters. Pyrolysis at higher temperature aids in the formation of porous structures, and the resulting MgO/carbon materials display high specific surface area (>260 m2/g) and more strongly basic sites. The presence of black carbon affects the catalytic behavior of MgO in the methylation of cyclopentadiene. These shaped MgO/carbon materials exhibit much higher catalytic performance than MgO at lower reaction temperatures.

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Keywords
Magnesium oxide; Rice grains; In situ transformation; Exotemplate; Black carbon
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Preparation of shaped magnesium oxide/carbon catalysts using rice grains as an exotemplate and carbon precursor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 460–461, 10 June 2013, Pages 26–35
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