fulltext.study @t Gmail

Strontium zirconate heterogeneous catalyst for biodiesel production: Synthesis, characterization and catalytic activity evaluation

Paper ID Volume ID Publish Year Pages File Format Full-Text
40701 45863 2012 7 PDF Available
Title
Strontium zirconate heterogeneous catalyst for biodiesel production: Synthesis, characterization and catalytic activity evaluation
Abstract

Strontium zirconate oxide was synthesized by co-precipitation and the citrate route and was evaluated as a heterogeneous catalyst for biodiesel production. The catalyst samples were characterized by XRD, FTIR, and TG, and catalytic activity was measured based on the ester content of the biodiesel produced that was quantified by GC. The co-precipitate samples were obtained in alkaline pH and had a mixture of the perovskite and pure strontium and zirconium oxide phases. Ester conversion using these samples was approximately 1.6%, indicating no catalytic activity. The citrate route was more efficient in producing perovskite when carried out at pH 7–8; excess SrCO3 was found on the catalyst surface due to CO2 adsorption, thus demonstrating no catalytic activity. The same synthesis carried out at pH 2 resulted in free OH− groups, with a small amount of the carbonate species that produced ester yield values of 98%. Therefore, matrices based on strontium zirconate produced via the citrate route in acidic media are potential heterogeneous catalysts for transesterification.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (207 K)Download as PowerPoint slideHighlights► Heterogeneous biodiesel catalysts based on Sr and Zr were synthesized. ► Co-precipitation and citrate route were evaluated in synthesis of SrZrO3 matrix. ► Synthesized catalyst properties were studied upon XDR, TG and IR. ► SrZrO3 (SZCRA) matrix has showed catalytic activity providing 98% of ester content. ► Employed heterogeneous reaction conditions were similar to those which using NaOH.

Keywords
Strontium zirconate; Citrate route; Heterogeneous catalyst; Biodiesel
First Page Preview
Strontium zirconate heterogeneous catalyst for biodiesel production: Synthesis, characterization and catalytic activity evaluation
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 445–446, 28 November 2012, Pages 76–82
Authors
, , , , , , ,
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