scholarly journals Heterogeneous Catalysts Based on H3PW12O40 Heteropolyacid for Free Fatty Acids Esterification

10.5772/26847 ◽  
2011 ◽  
Author(s):  
Marcio Jose da Silva ◽  
Abiney Lemos ◽  
Fernanda de Lima Menezes ◽  
Aline Mendes de Andrade ◽  
Manuel Gonzalo Hernandez Terrones
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Heterogeneous Catalysts

Esterification of free fatty acids with methanol to biodiesel using heterogeneous catalysts: From model acid oil to microalgae lipids

2017 ◽  
Vol 308 ◽  
pp. 101-109 ◽  
Author(s):  
Marc Veillette ◽  
Anne Giroir-Fendler ◽  
Nathalie Faucheux ◽  
Michèle Heitz
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Heterogeneous Catalysts ◽  
Acid Oil

Reusable and efficient heterogeneous catalysts for biodiesel production from free fatty acids and oils: Self-solidifying hybrid ionic liquids

Energy ◽  
2020 ◽  
Vol 211 ◽  
pp. 118631 ◽  
Author(s):  
Mantian Li ◽  
Jinyi Chen ◽  
Youjie Huang ◽  
Meichen Li ◽  
Xiaocheng Lin ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Ionic Liquids ◽  
Free Fatty Acids ◽  
Heterogeneous Catalysts ◽  
Biodiesel Production

Synthesis and Characterization of Different Transition Metal-Alginate Based Heterogeneous Catalyst for Esterification Reaction

2016 ◽  
Vol 709 ◽  
pp. 57-60
Author(s):  
Fei Ling Pua ◽  
Kah Thong Looi ◽  
Shamala Gowri Krishnan ◽  
Sharifah Nabihah
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Transition Metal ◽  
Free Fatty Acids ◽  
Heterogeneous Catalyst ◽  
Heterogeneous Catalysts ◽  
Biodiesel Production ◽  
Esterification Reaction ◽  
Homogeneous Catalyst

In recent years, attention has been drawn to produce heterogeneous catalyst to replace homogeneous catalyst in biodiesel industry. This study was focused on the synthesis of three different types of alginate based heterogeneous catalyst (Ferric-alginate, Copper-alginate, and Nickel alginate) and the effect of the catalyst on esterification of oleic acid. Morphology and elemental analysis was conducted to investigate the properties of the catalyst. The new heterogeneous catalysts were used to catalyze the esterification of oleic acid at reaction temperature of 60°C and 2 hours reaction time. Fe-alginate has achieved the highest free fatty acids (FFAs) conversation rate of 82.03%. The results and findings proved that transition metal-alginate heterogeneous catalyst has the potential and ability to esterify the free fatty acids prior biodiesel production from high free fatty acids feedstock.

Le biodiesel. II. Production — une synthèse

2008 ◽  
Vol 35 (1) ◽  
pp. 107-117 ◽  
Author(s):  
J. Nikiema ◽  
M. Heitz
Keyword(s):  
Fatty Acids ◽  
Physical Properties ◽  
Free Fatty Acids ◽  
Reaction Temperature ◽  
Heterogeneous Catalysts ◽  
Enzymatic Interesterification ◽  
Operating Parameters ◽  
Heating Value ◽  
Lower Heating Value ◽  
Lower Heating

Biodiesel is a biofuel obtained from vegetable or animal oils and fats. These are mainly composed of triglycerides but can contain significant amounts of water and free fatty acids, depending on their origin. Biodiesel is generally produced by transesterification, with or without catalyst, by enzymatic interesterification, by microemulsification, or by pyrolysis. Transesterification (with acid, basic, or enzymatic homogeneous or heterogeneous catalysts) is the most frequently used reaction. The operating parameters, including the types and concentrations of alcohol and catalyst, the reaction temperature and duration as well as the agitation intensity, must be optimized for successful application. In general, biodiesel is characterized by a higher viscosity and a lower heating value than those of petrodiesel. To improve these physical properties, petrodiesel or additives can be added to biodiesel.

GENERAL EFFECTS OF α-MELANOCYTE STIMULATING HORMONE IN THE RABBIT

1965 ◽  
Vol 48 (4) ◽  
pp. 609-618 ◽  
Author(s):  
H. K. Dyster-Aas ◽  
C. E. T. Krakau
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Serum Calcium ◽  
Calcium Level ◽  
Serum Calcium Level ◽  
Systemic Effects ◽  
List Type ◽  
Aqueous Flare ◽  
Melanocyte Stimulating Hormone ◽  
Blood Aqueous Barrier

ABSTRACT In addition to the previously described permeability disturbance in the blood aqueous barrier of the eye, measured as an increase of the aqueous flare, a series of transitory systemic effects have been recorded following the subcutaneous injection of synthetic α-MSH: marked increase of the free fatty acids in plasma, decrease in the serum calcium level, decrease in the blood pressure, increase in the skin temperature, increased frequency and diminished amplitude of respiration, presence of slow waves in the EEG. There is a correlation between the magnitude of the aqueous flare increase and the increase of free fatty acids in plasma and also between the aqueous flare and the minimum serum calcium level.

The Relationship of Fasting Free Fatty Acids, Adipose Tissue, Insulin Resistance, and Fasting Glucose Concentrations with Subsequent ß-Cell Function in Nondiabetic Subjects

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 1812-P
Author(s):  
MARIA D. HURTADO ◽  
J.D. ADAMS ◽  
MARCELLO C. LAURENTI ◽  
CHIARA DALLA MAN ◽  
CLAUDIO COBELLI ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Fatty Acids ◽  
Adipose Tissue ◽  
Free Fatty Acids ◽  
Cell Function ◽  
Fasting Glucose ◽  
Relationship Of ◽  
The Relationship

1010-P: Effects of MEDI0382, an Oxyntomodulin-Like Peptide with Targeted GLP-1/Glucagon Receptor Activity, on Amino Acids, Ketones, and Free Fatty Acids

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 1010-P
Author(s):  
VICTORIA E. PARKER ◽  
DARREN ROBERTSON ◽  
TAO WANG ◽  
DAVID C. HORNIGOLD ◽  
MAXIMILIAN G. POSCH ◽  
...  
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Free Fatty Acids ◽  
Receptor Activity ◽  
Glucagon Receptor
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