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Transesterification of rapeseed oil under flow conditions catalyzed by basic solids: MAl(La)O (M = Sr, Ba), MMgO (M = Y, La)

Paper ID Volume ID Publish Year Pages File Format Full-Text
41029 45875 2012 11 PDF Available
Title
Transesterification of rapeseed oil under flow conditions catalyzed by basic solids: MAl(La)O (M = Sr, Ba), MMgO (M = Y, La)
Abstract

Binary composites on basis of MAlO (M = Sr, Ba), MMgO (M = Y, La), MLaO (M = Sr, Ba) prepared by precipitation and calcined at 700–1200 °C were characterized by thermal analysis (TG–DTA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy of adsorbed probe molecule CDCl3 (FTIR), low temperature nitrogen adsorption and heat desorption of argon and their catalytic activity towards the transesterification reaction of rapeseed oil was studied in the flow fixed bed reactor at 200 °C and 20 atm. The phase composition, texture and surface composition of the catalysts are determined by their chemical nature and calcination temperature. The performance of the catalysts calcined at 700–750 °C diminishes in the order of SrLaO > BaLaO > LaMgO ≥ YMgO > BaAlO700 > SrAlO700 and is in a straight correlation with the integrated intensity of absorption of surface carbonate species representing the amount of the strong basic sites on the surface of the catalysts. Thermal treatment of MAlO (M = Sr, Ba) catalysts at 1200 °C exerts minor influence on their performance.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (111 K)Download as PowerPoint slideHighlights► Catalysts MAl(La)O (M = Sr, Ba), MMgO (M = Y, La) synthesized by precipitation. ► Catalysts for rapeseed oil transesterification with methanol in flow fixed bed reactor. ► Their surfaces contain three types of basic sites strongly differing in strength. ► The activity of the catalysts increases in order SrAlO < BaAlO < YMgO ≤ LaMgO < BaLaO < SrLaO.

Keywords
Biodiesel; Solid base catalysts; FTIR spectra; Rapeseed oil; Transesterification
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Transesterification of rapeseed oil under flow conditions catalyzed by basic solids: MAl(La)O (M = Sr, Ba), MMgO (M = Y, La)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 419–420, 29 March 2012, Pages 73–83
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
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Any Questions? feel free to contact us