fulltext.study @t Gmail

Heterogeneous catalysts for the production of new lubricants with unique properties

Paper ID Volume ID Publish Year Pages File Format Full-Text
43494 45972 2008 5 PDF Available
Title
Heterogeneous catalysts for the production of new lubricants with unique properties
Abstract

The heterogeneously catalyzed nucleophilic addition of carboxylic acid to the epoxide center in the epoxidized methyl-cis-9-octadecenoate (eOME) was attempted and the lubricant properties of the resulted hydroxy esters are reported. It is demonstrated that solid acid catalysts like Nafion, Nafion–silica composites (SAC), Amberlyst 15, Amberlite IR 120, zeolite H-Y and montmorillonite were promising and selective catalysts for hydroxy ester formation at reaction temperature 30 °C. The lubricant properties of various hydroxy esters were evaluated by rotary bomb testing, which indicates higher oxidation stability of the hydroxyl di esters than the starting material, methyl oleate. The viscosity index calculation shows that the viscosities of the hydroxy esters are significantly influenced by the size of the carbon chain and nature of the carboxylic acid.

Graphical abstractThe heterogeneously catalyzed nucleophilic addition of carboxylic acids to epodized methyl-cis-9-octadecenoate (eOME) was investigated. Solid acid catalysts like Nafion, Nafion/silica composites, Amberlyst, Amberlite, zeolite Y and montmorillonite were used. Taking into consideration catalyst stability and cost-efficiency, the best results were obtained with Amberlyst 15. Lubricant properties of the resulting fluids were tested. The carbon chain length of the carboxylic acid used influenced the oils viscosity.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Methyl oleate; Epoxide; Hydroxy ester; Nafion silica composites; Heterogeneous catalysis; Renewable feedstock; Rapeseed oil
First Page Preview
Heterogeneous catalysts for the production of new lubricants with unique properties
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 - Volume 348, Issue 2, 15 October 2008, Pages 266–270
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