Now showing items 1-10 of 706
Comparação de técnicas de determinação de ésteres em cachaça
(Sociedade Brasileira de Química, 2009)
An analytical comparison of three different techniques for quantitative profile of esters in cachaça is reported. The Ministério da Agricultura Pecuária e Abastecimento (MAPA) recommends the use of GC/FID or volumetry. ...
Interesterificação de óleo de soja para produção de ésteres metílicos de ácidos graxos catalisada por óxido de cálcio
(Universidade Federal de Santa MariaBrasilEngenharia QuímicaUFSMPrograma de Pós-Graduação em Engenharia QuímicaCentro de Tecnologia, 2018-08-02)
Price instability of fossil fuels and search for renewable energies have stimulated government programs to increase the percentage of biodiesel in diesel. This biofuel is generally produced by the transesterification ...
Quantitative ester analysis in cachaca and distilled spirits by gas chromatography-mass spectrometry (GC-MS)
(AMER CHEMICAL SOC, 2008)
An analytical procedure for the separation and quantification of ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl lactate, ethyl octanoate, ethyl nonanoate, ethyl decanoate, isoamyl octanoate, and ethyl laurate in ...
A New Proposal Using a Turbine in the Reactor with a Cavitation System in the Biodiesel Synthesis
The present research investigates the effect of a cavitation system with a turbine in comparison to the vigorous stirring on the process of biodiesel synthesis by the transesterification reaction using oil (triglycerides) ...
Desenvolvimento de m??todo cromatogr??fico para quantifica????o de alquil ??steres em amostras de biodiesel
(Instituto de Qu??micaPrograma de P??s Gradua????o em Qu??micaIQbrasil, 2016-09-08)
Simple and low energy consuming synthesis of cyanate ester functional naphthoxazines and their properties
(Royal Society of Chemistry, 2016-03)
Naphthoxazines functionalized with a cyanate ester group are synthesized in high yield under moderate conditions, including room temperature synthesis, compared with general benzoxazine synthesis. Additionally, this synthesis ...
Mechanical Properties Evaluation of a Recycled Flax Fiber-reinforced Vinyl Ester
(Sage Publications Ltd, 2005-06-01)
The effect of recycled powder incorporation on the mechanical properties of the thermosetting matrix (vinylester) and thermoplastic matrix (polypropylene) was studied. In the case of thermosetting matrix, flexural and ...