High Conversion of CaO-Catalyzed Transesterification of Vegetable Oils with Ethanol

Unruean, Palawat; Nomura, Kotohiro; Kitiyanan, Boonyarach

doi:10.5650/jos.ess21374

Cited by 11 publications

(7 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…triglycerides and methanol transform into glycerol and FAME directly. 12,15 In contrast, some studies have considered the three steps of the mechanistic process considering the kinetics of the transformation of di-and monoglycerides. 11,15,17,18 Some of the obtained kinetic parameters are condensed in Table 1.…”

Section: Esterification and Transesterificationmentioning

confidence: 99%

“…For instance, to simplify calculations, some authors have considered the diglycerides and monoglycerides reactions too fast and have based their models on a one‐step process, i.e. triglycerides and methanol transform into glycerol and FAME directly 12,15 . In contrast, some studies have considered the three steps of the mechanistic process considering the kinetics of the transformation of di‐ and monoglycerides 11,15,17,18 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A review of the use of SrO in catalysts for biodiesel production

Tavizón‐Pozos,

Cruz‐Aburto

2023

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

SrO has attracted attention for its use as a heterogeneous catalyst in producing biodiesel from transesterification owing to its high alkaline character and low solubility in methanol. In studies conducted in this decade, reaction conditions such as the methanol–oil molar ratio, reaction time, catalyst loading and temperature have been optimized in these systems. Furthermore, several works have been carried out to improve the physicochemical properties and increase the leaching resistance of this material. Thus, the new trends in using SrO in transesterification reactions are that this oxide should be supported or combined with Al2O3, TiO2, ZrO2, or Fe2O3, CaO, metal–organic frameworks, zeolites or La2O3. It has been observed that strontium can form mixed crystalline phases with these oxides by increasing the (M2+O2−) pairs and Lewis basicity of the oxygens, resulting in increased basicity and catalytic activity. Moreover, the transition metal oxides may provide Lewis acidity. Hence, these strontium‐containing catalytic systems have demonstrated a bifunctionality that can perform esterification and transesterification reactions at the same time. In addition, the combination of these oxides decreases the leaching of the catalyst. Other materials such as metal–organic frameworks, zeolites, and La2O3 have been studied as SrO supports, showing that they can be used in oil transesterification reactions.

show abstract

Section: Esterification and Transesterificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A review of the use of SrO in catalysts for biodiesel production

Tavizón‐Pozos,

Cruz‐Aburto

2023

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

show abstract

“…45 We also recently reported that CaO catalyzed high yield synthesis of FAEs by transesterification of soybean, rice bran, and palm oils with ethanol at 150−200 °C. 47 The closed reaction system maintains high conversion (99%) especially at high temperature in the presence of CaO (1.0 wt %) irrespective of the kind of plant oil. 47 On the basis of these results, we thus have an interest in applying the catalyst for conversion of FAEs to fine chemicals including the monomer synthesis of biobased aliphatic polyesters.…”

Section: ■ Introductionmentioning

confidence: 97%

“…47 The closed reaction system maintains high conversion (99%) especially at high temperature in the presence of CaO (1.0 wt %) irrespective of the kind of plant oil. 47 On the basis of these results, we thus have an interest in applying the catalyst for conversion of FAEs to fine chemicals including the monomer synthesis of biobased aliphatic polyesters. 1,3−5,12−15 This is because the conventional monomer synthesis with ethyl (or methyl) 10-undecenoate (derived from castor oil) by transesterification generally requires excess 1,1′-carbonyl diimidazole, 33 p-toluene sulfonic acid, or NaOMe 35 or NEt 3 and 4,4-dimethylaminopyridine, 36 whereas reports for the catalytic transesterification in the presence of Sc(CF 3 SO 3 ) 3 34 or Cu/V 2 O 5 32 were also known.…”

Section: ■ Introductionmentioning

confidence: 97%

“…Calcium oxide (CaO) has been widely considered as the efficient transesterification catalyst of vegetable oils due to its low cost and easy commercial availability with high international reserves as well as high basicity, high safety, and low alcohol solubility. ,− It has been postulated that the oxygen anion presented on the CaO surface that possesses basic properties initiates the base-catalyzed reaction by abstracting a proton from alcohol as well as by the interaction between a Lewis basic site (oxygen anion) and reactants (esters); these double activated intermediates could thus facilitate undergoing transesterification . We also recently reported that CaO catalyzed high yield synthesis of FAEs by transesterification of soybean, rice bran, and palm oils with ethanol at 150–200 °C . The closed reaction system maintains high conversion (99%) especially at high temperature in the presence of CaO (1.0 wt %) irrespective of the kind of plant oil .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

CaO Catalyzed Transesterification of Ethyl 10-Undecenoate as a Model Reaction for Efficient Conversion of Plant Oils and Their Application to Depolymerization of Aliphatic Polyesters

Sudhakaran

Siddiki

Kitiyanan

et al. 2022

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

Transesterification of ethyl 10-undecenoate (derived from castor oil) with cyclohexanemethanol over a CaO catalyst (prebaked at 300 °C) gave undec-10-enoate exclusively (yield 92%, selectivity 95−98%) at 100 °C, and the activity increased at 120 °C with maintaining the high selectivity (97− 98%). The transesterification with other alcohols, especially primary alcohols (2-ethyl-1-butanol, 1-hexanol, 3-buten-1-ol, and 10-undecen-1-ol), afforded the corresponding esters with high selectivity, indicating the possibility for application of efficient conversion of plant oils to various fine chemicals including the monomer for the synthesis of polyesters. Efficient acid-, base-free depolymerization of aliphatic polyesters, poly(ethylene adipate) and poly(butylene adipate), has been demonstrated in this catalysis by transesterification with ethanol and cyclohexanemethanol, affording corresponding adipates and ethylene glycol or butylene glycol exclusively: the reusability of a CaO catalyst has also been demonstrated.

show abstract

Soy‐based polyester: Sustainable solutions for emerging materials

Chaudhary,

Patel,

Parekh

et al. 2024

Polymer Engineering & Sci

View full text Add to dashboard Cite

Innovative and renewable polymers and additives are the focus of increased research due to public and environmental pressure. There has been a recent uptick in interest from scientists in biobased “green” plasticizers that can be covalently bonded to replace harmful and migratory phthalate‐based plasticizers. Vegetable oils (VOs) are one of the biosources, as they are both plentiful and sustainable. This review aims to highlight the synthesis methods for soy‐based polyesters. Therefore, the chemistry of soybean oil as a polymeric material and its role in the synthesis of polyesters derived from soybeans are the primary topics of this review. This review covers the many ways in which soybean oil and its derivatives can be used to synthesize polyester, either directly or indirectly.Highlights The need for sustainable polymers is explored. Soybean oil‐based polyesters are covered. Modification and chemistry to convert soybean oil into polyester are described. Applications of soybean‐based polyesters are provided.

show abstract

High Conversion of CaO-Catalyzed Transesterification of Vegetable Oils with Ethanol

Cited by 11 publications

References 57 publications

A review of the use of SrO in catalysts for biodiesel production

A review of the use of SrO in catalysts for biodiesel production

CaO Catalyzed Transesterification of Ethyl 10-Undecenoate as a Model Reaction for Efficient Conversion of Plant Oils and Their Application to Depolymerization of Aliphatic Polyesters

Soy‐based polyester: Sustainable solutions for emerging materials

Contact Info

Product

Resources

About