Fabrication of hollow cage-like CaO catalyst for the enhanced biodiesel production via transesterification of soybean oil and methanol

Huang, Jing; Zhang, Yun; Muhammad, Yaseen; Qu, Hui‐Ying; He, Ruining; Tong, Zhangfa

doi:10.1016/j.fuel.2020.119799

Cited by 56 publications

(15 citation statements)

References 79 publications

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“…The biodiesel yield tended to increase with increasing amount of methanol, and reached a maximum of 98.4% when the molar ratio of methanol to oil was 15:1. In contrast to Huang's study [28], the biodiesel yield reached only 97.8% at the same molar ratio of methanol to oil. It was also observed that when the molar ratio of oil to methanol was increased to 20:1, the yield of biodiesel decreased remarkably due to dilution effect.…”

Section: The Influence Of Molar Ratiocontrasting

confidence: 85%

Enhanced transesterification of rapeseed oil to biodiesel catalyzed by KCl/CaO

Shuang¹,

Li²,

Qin³

et al. 2022

Comptes Rendus. Chimie

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A series of supported solid base catalysts were prepared by impregnation of chloride salts over CaO. The catalytic activity of the prepared catalysts was tested for the transesterification reaction of biodiesel from rapeseed oil and methanol. The KCl/CaO catalyst containing 15% KCl exhibited the highest catalytic activity after calcination at 600 °C for 6 h. A reaction optimization study was carried out using KCl/CaO as catalyst leading to operation conditions for achieving a 98.3% yield of fatty acid methyl ester (FAME) at 2.5 h and 65 °C, a catalyst amount of 10%, and a mole ratio of methanol to rapeseed oil of 15:1. It was found that the highest FAME yield at 2.5 h was faster than that at 6 h for commercial CaO catalysts under the same reaction conditions. The characterization results showed that the pore size of CaO particles was greatly improved by the addition of KCl, which facilitated better access of the reactive molecules to the active sites of the catalyst.

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Section: The Influence Of Molar Ratiocontrasting

confidence: 85%

Enhanced transesterification of rapeseed oil to biodiesel catalyzed by KCl/CaO

Shuang¹,

Li²,

Qin³

et al. 2022

Comptes Rendus. Chimie

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“…Glycerol carbonate (GC) is one of the most promising derivatives in glycerol derivatives. 1–4 GC was widely used in original solvents, elastomers, surfactants, adhesives, inks, paints, lubricants due to its remarkable biodegradability, water solubility, low viscosity, low toxicity and high boiling point. 5–7 Moreover, GC molecules contain different functional groups, which show high reactivity with alcohols, amines, carboxylic acids, ketones and isocyanates.…”

Section: Introductionmentioning

confidence: 99%

Embedded ionic liquid modified ZIF-8 in CaMgAl hydrotalcites for bio-glycerol transesterification

et al. 2022

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“…A heterogeneous base catalyst such as CaO is one of the best and most used catalysts in biodiesel production due to its high catalytic and basicity levels, moderate condition operability, and high biodiesel conversion (Faruque et al 2020 ). Numerous studies had reported excellent CaO catalyst activity, including Kouzu et al ( 2008 ) who conducted transesterification of biodiesel from soybean oil and obtaining a 99% conversion with 120 min and 65°C reaction time and temperature; Viola et al ( 2012 ) obtaining a 93% biodiesel conversion in 80 min and 65°C from transesterification of used cooking oil; Colombo et al ( 2017 ) who conducted transesterification of soybean oil in a recycling reactor and achieved a 100% biodiesel conversion with 75-min reaction time and 3% w / w catalyst mass; Huang et al ( 2021 ) achieving 97.8% biodiesel yield with 2 h and 65°C reaction time and temperature from transesterification of soybean oil. However, the possible suspension formation and high glycerin viscosity in the product consequently made CaO to be mostly used as a support catalyst (Helwani et al 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Novel iron sand-derived α-Fe2O3/CaO2 bifunctional catalyst for waste cooking oil-based biodiesel production

Prameswari

Widayat

Buchori

et al. 2022

Environ Sci Pollut Res

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The main aim of this work was to develop a heterogeneous Fe 2 O 3 /CaO 2 bifunctional catalyst prepared from iron sand and 3 different CaO 2 sources (CaCO 3 , Ca (OH) 2 , and limestone) using wet impregnation and calcination methods for biodiesel production. The effects of different CaO 2 sources and Fe/Ca ratio in the catalyst were investigated to provide insight into the catalyst character and biodiesel yield. X-ray diffraction, X-ray fluorescence, and scanning electron microscopy analyses were used to characterize the catalyst. CaCO 3 was concluded as the best CaO 2 source, while the best Fe/Ca configuration was found to be 1:4, giving the highest biodiesel yield (97.0401%) with no diglycerides. Greater addition of Fe loading would result in an amorphous structure, and all catalysts were relatively crystalline. Fe was concluded to favor the esterification reaction and biodiesel formation, while CaO 2 was seen to favor the transesterification reaction and fatty acid methyl ester (FAME) formation. The catalyst mechanism was also established in this study, where esterification of free fatty acid (FFA) and glycerol took place on the acid site to produce diglyceride and transesterification of triglyceride by methanol occurred on the basic site.

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Fabrication of hollow cage-like CaO catalyst for the enhanced biodiesel production via transesterification of soybean oil and methanol

Cited by 56 publications

References 79 publications

Enhanced transesterification of rapeseed oil to biodiesel catalyzed by KCl/CaO

Enhanced transesterification of rapeseed oil to biodiesel catalyzed by KCl/CaO

Embedded ionic liquid modified ZIF-8 in CaMgAl hydrotalcites for bio-glycerol transesterification

Novel iron sand-derived α-Fe2O3/CaO2 bifunctional catalyst for waste cooking oil-based biodiesel production

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