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Effect of Si precursor on structural and catalytic properties of nanosize magnesium silicates

Paper ID Volume ID Publish Year Pages File Format Full-Text
39509 45825 2014 11 PDF Available
Title
Effect of Si precursor on structural and catalytic properties of nanosize magnesium silicates
Abstract

Two Si precursors, inorganic (sodium silicate) and organic (tetraethoxy silane), were used to synthesize magnesium silicate (MgSil) nanomaterials. The effect exerted by the nature of Si precursors on the morphology and structural properties of the samples was studied by chemical analyses, X-ray diffraction, HRTEM, FTIR spectroscopy, XPS, N2 adsorption, solid-state NMR spectroscopy and TPD of CO2 and NH3 techniques. The characterization results show that MgSil-org sample possessed hollow nanospheres which are composed of small platelets and sheets; in contrast, MgSil-inorg sample showed nanotubular structure due to more alkaline nature of the inorganic Si precursor. Additionally, MgSil-org sample have different textural characteristics, acidic and basic properties. MgSil-org sample have higher surface areas, more uniform mesoporous pores, and more number of acidic and basic sites as well as higher activities in transesterification of tributyrin and esterification of palmitic acid with methanol than MgSil-inorg sample. MgSil-org sample is stable and showed excellent reusability for more than five cycles without any loss of activity in transesterification and esterification reactions.

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Keywords
Magnesium silicate; Nanomaterials; Tetraethoxy silane; Sodium silicate; Biodiesel; Transesterification.
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Effect of Si precursor on structural and catalytic properties of nanosize magnesium silicates
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 488, November 2014, Pages 208–218
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