scholarly journals Mesoporous SBA-15 Silica-supported Diisopropylguanidine: an Efficient Solid Catalyst for Interesterification of Soybean Oil with Methyl Octanoate or Methyl Decanoate

2016 ◽  
Vol 65 (10) ◽  
pp. 803-813 ◽  
Author(s):  
Wenlei Xie ◽  
Libing Hu
Keyword(s):  
Soybean Oil ◽  
Solid Catalyst ◽  
Methyl Octanoate ◽  
Methyl Decanoate

scholarly journals Manganese carbonate-zinc glycerolate, synthesis, characterization and application as catalyst for transesterification of soybean oil

2016 ◽  
Vol 22 (4) ◽  
pp. 431-443
Author(s):  
Xiaochan Zhu ◽  
Hui Liu ◽  
Dejan Skala
Keyword(s):  
Soybean Oil ◽  
Solid Phase ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Mixed System ◽  
Solid Catalyst ◽  
Manganese Carbonate ◽  
Gravimetric Analysis ◽  
Working Parameters

In this study, mixed system containing manganese carbonate (MnCO3) and zinc glycerolate (ZnGly) was synthesized, and tested as solid catalyst for transesterification of soybean oil and biodiesel production. The samples of MnCO3/ZnGly before and after usage for transesterification process were characterized using different techniques: determination of basic strength, determination of specific surface area according to Brunauer-Emmett-Teller (BET), measuring the mass change using thermal gravimetric analysis (TGA), investigating the solid phase content and presence of different specific elements and groups by X-Ray diffraction (XRD), the Fourier transform infrared (FT-IR) spectroscopy, the scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS). The effects of different working parameters of transesterification were also investigated: temperature (438-458K), duration of transesterification (0-3.5h), methanol to oil molar ratio (12:1-36:1) and used amounts of catalyst (1-5 mass%). The reusability and stability of MnCO3/ZnGly were analyzed and obtained results showed that MnCO3/ZnGly exhibited a good activity with 100% TG conversion and 81.5% FAME yield with fresh catalyst, and can give 95-100% TG conversion and 62-78% FAME yield after 13 repeated use of same amount of catalyst without regeneration processes. Content of Mn and Zn in biodiesel and glycerol was analyzed by ICP-AAS after each reuse of catalyst.

Application of calcined waste cupuaçu (Theobroma grandiflorum) seeds as a low-cost solid catalyst in soybean oil ethanolysis: Statistical optimization

2019 ◽  
Vol 200 ◽  
pp. 112095 ◽  
Author(s):  
Iasmin Maquiné Mendonça ◽  
Flavia Lopes Machado ◽  
Cláudia Cândida Silva ◽  
Sérgio Duvoisin Junior ◽  
Mitsuo Lopes Takeno ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Low Cost ◽  
Statistical Optimization ◽  
Solid Catalyst ◽  
Theobroma Grandiflorum

Production of biodiesel through transesterification of soybean oil using lithium orthosilicate solid catalyst

2012 ◽  
Vol 104 ◽  
pp. 167-173 ◽  
Author(s):  
Jian-Xun Wang ◽  
Kung-Tung Chen ◽  
Jhong-Syuan Wu ◽  
Po-Hsiang Wang ◽  
Shiuh-Tsuena Huang ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Solid Catalyst ◽  
Lithium Orthosilicate

KI-impregnated oyster shell as a solid catalyst for soybean oil transesterification

2012 ◽  
Vol 104 ◽  
pp. 329-335 ◽  
Author(s):  
Suguna Jairam ◽  
Praveen Kolar ◽  
Ratna Sharma-Shivappa ◽  
Jason A. Osborne ◽  
Jack P. Davis
Keyword(s):  
Soybean Oil ◽  
Oyster Shell ◽  
Solid Catalyst

scholarly journals Synthesis, characterization and application of [CTA+]MCM-41 in the catalytic conversion of soybean oil to fatty acid methyl esters

2016 ◽  
Vol 12 (6) ◽  
pp. 4117-4126 ◽  
Author(s):  
Vinícius Kothe ◽  
Helton José Alves ◽  
Marcos Henrique Luciano Silveira ◽  
Luiz Pereira
Keyword(s):  
Catalytic Activity ◽  
Fatty Acid ◽  
Soybean Oil ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Solid Catalyst ◽  
Reaction Yield ◽  
Acid Methyl ◽  
Mesoporous Solids ◽  
Mcm 41

The transesterification of vegetable oil and/or animal fats in homogeneous alkaline medium is still the most widely used method for the production of biodiesel. However, this process requires raw materials with low acidity and moisture content to prevent undesirable side reactions such as saponification, which leads to emulsification and promotes losses in the reaction yield. Many solid compounds can be used in catalytic processes to reduce these limitations. Heterogeneous catalysts allow easy separation of the reaction media and have the possibility of reuse in several cycles. In this work, [CTA+]MCM-41 molecular sieves were synthesized and characterized by several methods (XRD, SEM, TGA and BET) to be applied in the methanolysis of soybean oil. The resulting materials were characterized as mesoporous solids of type IV with similar textural properties and thermal stability. The catalytic activity of [CTA+]MCM-41 in soybean oil methanolysis was analyzed by gel permeation chromatography (GPC) and the best solid catalyst was applied in a factorial design that was validated by Analysis of Variance (ANOVA). The oil:methanol molar ratio and the catalyst concentration were the variables with the highest statistical effects, with the latter showing a quadratic profile in relation to the response function. The best conversion was achieved at 343 K, 30 min and 3.75 wt % catalyst, which corresponded to a product with 99.2% in fatty acid methyl esters. Calcination caused a total loss in catalytic activity due to the removal of CTA+ cations from the mesoporous solids. Hence, such activity was associated with the formation of (SiO-)(CTA+) ion pairs at the surface of the solid catalyst

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