Synthesis and characterization of spherically-shaped CaO/γ-Al 2 O 3  catalyst and its application in biodiesel production

Marinković, Dalibor; Avramović, Jelena M.; Stanković, Miroslav; Stamenković, Olivera S.; Jovanović, D.; Veljković, Vlada B.

doi:10.1016/j.enconman.2017.04.079

Cited by 72 publications

(32 citation statements)

References 59 publications

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“…The results that were obtained from the EDX analysis of the gangue material showed predominance of magnesium (4 cps/ev) and calcium (4.2 cps/ev) ( Figure 1). The predominance of magnesium or other related transitional metals in heterogeneous catalysts has been widely shown to have a positive impact on their mass transfer capabilities in the transesterification process, subsequently enhancing the biodiesel production at lower reaction rates [22].…”

Section: Gangue Characterisationmentioning

confidence: 99%

“…Catalysts 2019, 9, x FOR PEER REVIEW 3 of 13 traditional nucleation and growth mechanism [21]. The crystallisation mechanisms may be a function of the chemical nature of the oxide and the process temperature [22]. In the conventional biodiesel production process, oil is derived from oilseed crops, which is associated with the food versus fuel dilemma [23,24].…”

Section: Gangue Characterisationmentioning

confidence: 99%

“…that was used to obtain ultrafine nano-oxides, crystallisation does not follow a traditional nucleation and growth mechanism [21]. The crystallisation mechanisms may be a function of the chemical nature of the oxide and the process temperature [22].…”

Section: Introductionmentioning

confidence: 99%

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Heterogeneous Nanomagnetic Catalyst from Cupriferous Mineral Processing Gangue for the Production of Biodiesel

et al. 2019

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The commercialisation of biodiesel as an alternative energy source is challenged by high production costs. The cost of feedstock, catalyst and separation of the dissolved catalyst (homogeneous catalyst) from the product are the major contributors to the total manufacturing cost of biodiesel. This study investigated the potential of a heterogeneous catalyst produced from mineral processing waste for biodiesel production. Tailings from the concentration of cupriferous minerals served as the starting material for synthesis of the catalyst. The nanomagnetic catalysts were prepared using co-precipitation (CMCO) and sol-gel (CMSG) methods, combined with zero-valent iron nanoparticles (ZVINPs) to form a hydride catalyst (CMSG/ZVINPs). Catalyst properties were assessed using SEM, TEM, BET and EDX. The catalyst activity was enhanced by a large number of basic sites that were afforded by the presence of calcite and magnesite. Good surface areas and particle sizes of 58.9 m2/g and 15.4 nm, and 52.6 m2/g and 16.9 nm were observed for the catalysts that were prepared using the CMSG and CMCO methods, respectively. 173 emu/g mass magnetisation was obtained for CMSG/ZVINPs, which was sufficient for the catalyst to be regenerated and reused for biodiesel production by exploiting the magnetic properties. The maximum yield obtained with this catalyst was 88% and an average of 27% decrease in biodiesel yield was observed after four reaction cycles. The physicochemical properties of the biodiesel produced complied with the ASTM standard specification. The results showed that mineral processing tailings are a viable starting material for catalyst preparation in biodiesel production.

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Section: Gangue Characterisationmentioning

confidence: 99%

Section: Gangue Characterisationmentioning

confidence: 99%

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Heterogeneous Nanomagnetic Catalyst from Cupriferous Mineral Processing Gangue for the Production of Biodiesel

et al. 2019

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“…The dependence of the world on the fossil fuels is a topic of discussion by many scientists, researchers, and environmental activists worldwide. Biodiesel, as a biofuel, with numerous advantages (biodegradability, lower content of CO 2 ,SO 2 , and hydrocarbons during combustion, high flash point, high lubricant properties, and high octane number) is a serious competitor to fossil diesel [1,2]. Also, very important is the fact that biodiesel obtained in accordance to standard does not require modification of existing diesel engine [3].…”

Section: Introductionmentioning

confidence: 99%

Solid Green Biodiesel Catalysts Derived from Coal Fly Ash

Stanković¹,

Pavlović²,

Marinković³

et al. 2020

Renewable Energy - Resources, Challenges and Applications

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Coal fly ash (CFA) is generated during the combustion of coal for energy production. Many studies are based on its utilization as the most abundant, cheap aluminosilicate industrial residue, which is recognized as a risk for the environment and human health. The present review is focused on CFA origin, chemical properties, and its catalytic application for biodiesel production. The aluminosilicate nature and the presence of rare earth elements make CFA suitable for different adsorption, catalytic, and extraction processes for obtaining valuable products including alternative fuels and pure elements. However, the presence of toxic elements is a potential environmental problem, which should be solved in order to avoid soil, water, and air pollution. The most used modification methods are alkali activation, hydrothermal, and thermal treatment that improve the structural, morphological, and textural properties. The active catalytic form could be obtained by impregnation or ion exchange method. It was found that such synthesized materials have significant catalytic potential in the biofuel chemistry. In the case of biodiesel production, the high values of conversion or yield can be achieved under mild low-energy reaction conditions in the presence of low-cost waste-based catalysts.

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“…Al 2 O 3 and ZSM-5 are potential solutions because of large surface areas, lower cost, easily accessible and no potential leaching hazard. Furthermore, Al 2 O 3 and ZSM-5 were widely used as catalysts in biodiesel production, shown by researches namely Marinkovic et al (2017), Mohadesi et al (2015), Zabeti et al (2009), Fawaz et al (2019)…”

Section: Introductionmentioning

confidence: 99%

Waste cooking oil processing for fatty acid methyl ester and mono glycerides production with magnetite catalyst

Widayat¹,

Hadiyanto²,

Putra³

et al. 2020

Food Res.

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The objective of this research was to produce biodiesel using waste cooking oil and various magnetite catalysts with the esterification-transesterification process. Magnetite catalysts tested were α- Fe2O3, α- Fe2O3/Al2O3, α- Fe2O3/ZSM-5 catalysts. Catalysts were prepared through chemical precipitation and calcination. The esterificationtransesterification process was carried out with the conditions WCO: methanol molar ratio of 15:1, catalyst (1% wt of oil), heated at 65℃ for 3 hrs. The results showed biodiesel production using α- Fe2O3-ZSM-5 catalyst obtained higher %FAME (83.28%), yield (91.915%) and monoglyceride content (16.72%) compared to others due to larger pore volume. Biodiesel produced passed the requirement of Indonesian National Standard (SNI) based on density, acid number and viscosity.

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Synthesis and characterization of spherically-shaped CaO/γ-Al 2 O 3 catalyst and its application in biodiesel production

Cited by 72 publications

References 59 publications

Heterogeneous Nanomagnetic Catalyst from Cupriferous Mineral Processing Gangue for the Production of Biodiesel

Heterogeneous Nanomagnetic Catalyst from Cupriferous Mineral Processing Gangue for the Production of Biodiesel

Solid Green Biodiesel Catalysts Derived from Coal Fly Ash

Waste cooking oil processing for fatty acid methyl ester and mono glycerides production with magnetite catalyst

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