Heterogeneous acid catalyst based on sulfated iron ore tailings for oleic acid esterification

Prates, Caroline Duarte; Ballotin, Fabiane Carvalho; Limborço, H.; Ardisson, José D.; Lago, Rochel M.; Teixeira, Ana Paula C.

doi:10.1016/j.apcata.2020.117624

Cited by 28 publications

(10 citation statements)

References 41 publications

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“…Sulfonated metal oxide materials have high acidity; therefore, they are the promising heterogeneous acid catalysts for biodiesel production via esterification reactions. Among these, sulfonated iron oxides are of great importance due to iron oxides’ efficiency and availability [ 60 ].…”

Section: Catalysis In Transesterificationmentioning

confidence: 99%

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

2021

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The excessive utilization of petroleum resources leads to global warming, crude oil price fluctuations, and the fast depletion of petroleum reserves. Biodiesel has gained importance over the last few years as a clean, sustainable, and renewable energy source. This review provides knowledge of biodiesel production via transesterification/esterification using different catalysts, their prospects, and their challenges. The intensive research on homogeneous chemical catalysts points to the challenges in using high free fatty acids containing oils, such as waste cooking oils and animal fats. The problems faced are soap formation and the difficulty in product separation. On the other hand, heterogeneous catalysts are more preferable in biodiesel synthesis due to their ease of separation and reusability. However, in-depth studies show the limited activity and selectivity issues. Using biomass waste-based catalysts can reduce the biodiesel production cost as the materials are readily available and cheap. The use of an enzymatic approach has gained precedence in recent times. Additionally, immobilization of these enzymes has also improved the statistics because of their excellent functional properties like easy separation and reusability. However, free/liquid lipases are also growing faster due to better mass transfer with reactants. Biocatalysts are exceptional in good selectivity and mild operational conditions, but attractive features are veiled with the operational costs. Nanocatalysts play a vital role in heterogeneous catalysis and lipase immobilization due to their excellent selectivity, reactivity, faster reaction rates owing to their higher surface area, and easy recovery from the products and reuse for several cycles.

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Section: Catalysis In Transesterificationmentioning

confidence: 99%

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

2021

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“…Among these, the homogeneous catalytic systems exhibited a fast reaction rate; however, some disadvantages in these systems are still significant, such as corrosive nature and nonregenerable. 12 Besides, the enzymatic catalytic systems are also commonly used in biodiesel production, but their practical applications are always limited by the poor stability and high cost. 13 Hence, the investigation of heterogeneous catalytic systems for the production of biodiesel recently has become a research hotspot owing to their high catalytic activity, stability, reusability and easy regeneration, 14 but heterogeneous base catalysts are not suitable for catalyzing free fatty acids and oils with high acid values due to saponification reactions.…”

Section: Introductionmentioning

confidence: 99%

MOF-derived zirconia-supported Keggin heteropoly acid nanoporous hybrids as a reusable catalyst for methyl oleate production

et al. 2021

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“…Figure 4 shows that another plant waste increases biodiesel yield percentage. Figure 4 a exemplified that a higher biodiesel yield (77%) was attained through bagasse waste ash with 80 °C of reaction temperature 46 , 47 . Using of papaya stem ash, the maximum biodiesel yield was received as 85% by 80 °C of reaction temperature, as shown in Fig.…”

Section: Resultsmentioning

confidence: 96%

Environmental remediation at vegetable marketplaces through production of biowaste catalysts for biofuel generation

Sathish

Saravanan

Poures

et al. 2023

Sci Rep

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Large quantities of vegetable biowaste are generated at marketplaces, usually in highly populated locations. On the other hand, nearby markets, hotels, and street shops generate much cooking oil waste and dispose of them in the sewage. Environmental remediation is mandatory at these places. Hence, this experimental work concentrated on preparing biodiesel using green plant wastes and cooking oil. Biowaste catalysts were produced from vegetable wastes and biofuel generated from waste cooking oil using biowaste catalysts to support diesel demand and Environmental remediation. Other organic plant wastes such as bagasse, papaya stem, banana peduncle and moringa oleifera are used as heterogeneous catalysts of this research work. Initially, the plant wastes are independently considered for the catalyst for biodiesel production; secondary, all plant wastes are mixed to form a single catalyst and used to prepare the biodiesel. In the maximum biodiesel yield analysis, the calcination temperature, reaction temperature, methanol/oil ratio, catalyst loading and mixing speed were considered to control the biodiesel production. The results reveal that the catalyst loading of 4.5 wt% with mixed plant waste catalyst offered a maximum biodiesel yield of 95%.

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Heterogeneous acid catalyst based on sulfated iron ore tailings for oleic acid esterification

Cited by 28 publications

References 41 publications

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

MOF-derived zirconia-supported Keggin heteropoly acid nanoporous hybrids as a reusable catalyst for methyl oleate production

Environmental remediation at vegetable marketplaces through production of biowaste catalysts for biofuel generation

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