Near instantaneous gelation of crude oil using naphthalene diimide based powder gelator

Datta, Saptarshi; Samanta, Samaresh; Chaudhuri, Debangshu

doi:10.1039/c7ta10103a

Cited by 35 publications

(36 citation statements)

References 29 publications

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“…Recently phase selective gels formed from the oil‐water mixture by direct powder gelators at room temperature was reported . The low molecular weight organogelators based on L‐phenylalanine, D‐/L‐arabinose based enantiomers, alkyl bicarbamates, C 2 ‐symmetric benzene, and N‐acetylglucosamine were utilized for an excellent phase selective gelation from biphasic mixture .…”

Section: Introductionmentioning

confidence: 99%

Phenoxy‐Alkyl Maleates as Phase‐Selective Organogelators for Gelation of Edible Oils

Kumar

Nayak

2018

Euro J Lipid Sci & Tech

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Phase selective gelation may solve environmental problems such as water pollution and fire accidents during oil storage, a major problem for aquatic bodies. The objective of this work is to synthesize a series of phenoxy‐alkyl maleates (n‐PAM) oleogelators with homologous alkyl chain lengths for efficient phase selective gelation. The n‐PAM molecules are found to form oleogel in various edible oils among which sunflower oil shows best gelation. The gelation behavior increases with an increase in alkyl chain length of the n‐PAM gelators as observed from their low minimum gelation concentration (MGC) values. Oleogels thermal stability is examine through tube inversion method and differential scanning calorimetry (DSC). The rheological studies suggest that the oleogel of sunflower oil is mechanically stable and show typical viscoelastic properties. The field emission scanning electron microscopy (FE‐SEM) study of the gels shows sheet‐like morphology. Furthermore, the n‐PAM gelators exhibit quick phase selective gelation of edible oils at low MGC. Both the edible oil and gelator are quantitatively regained from recovered oleogel by employing the vacuum distillation. It is believed that these n‐PAMs could aid in reducing the environmental impacts of oil spills. Practical Applications: The phenoxy‐alkyl maleates gelators present in the MS show gelation ability in various edible oils at low minimum gelation concentration. These molecules also form efficient phase selective gelation with edible oils. Both oil and gelator can be recovered through vacuum distillation and gelator can be reused multiple times. Thus, all these advantages strongly point that out their bright future, in particular in edible oil spill recovery, could aid in reducing the environmental impacts from oil spills. Herein, the synthesized phenoxy alkyl maleate derivatives are reported as separators of edible oil from the oil‐water biphasic mixture. Initially, the gelator is solubilized in the biphasic mixture by heating. Later, gelation ability is observed by tube inversion method. From the phase selective gel, oil and gelator are separated through a distillation method. The recovered gelator can be reused in oil recovery process. This application may find use in oil recovery from waste plant of edible oil industries.

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Section: Introductionmentioning

confidence: 99%

Phenoxy‐Alkyl Maleates as Phase‐Selective Organogelators for Gelation of Edible Oils

Kumar

Nayak

2018

Euro J Lipid Sci & Tech

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“…To solve this problem, Konda et al 41 used a heating–cooling cycle, but this is not possible in practice. The naphthalene diimide-based powdery gelator reported by Datta et al 15 shows excellent oil solidification, but its preparation procedure is relatively complex. Satisfactorily, COGA does not require complex organic synthesis procedures and molecular framework design.…”

Section: Resultsmentioning

confidence: 99%

“…PSOG is usually divided into two types: co-solvent form 11–14 and solid powder form. 15–17 For the former, it brings about problems such as the transportation and storage of a large amount of carrier solvents, and possible secondary pollution for marine and aquatic ecosystems. 18,19 For powdery organic gelling agents, they can be sprayed directly onto the oil surface for oil spill recovery.…”

Section: Introductionmentioning

confidence: 99%

Phase-selective cellulose nanofibril-based oil gelling agent for oil spill recovery

Shen

Chen

et al. 2022

Environ. Sci.: Nano

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“…Phase‐selective gelation (PSG) of supramolecular organogelator is an ongoing research interest because of its potential application in oil spill remediation . PSG process allows the gelator to from gel preferentially with oil (or water‐immiscible solvents) from a biphasic mixture of oil and water.…”

Section: Resultsmentioning

confidence: 99%

Cholesterol‐Coupled Diazine‐Phenol Gelator: Cyanide Sensing, Phase‐Selective Gelation in Oil Spill Recovery and Dye Adsorption

2020

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Cholesterol-appended gelator 1 describing the linking of 2hydroxy-1-naphthaldehyde with cholesterol coupled benzaldehyde via hydrazine linker has been synthesized and established as multi responsive material. It forms stable gels from semiaqueous and benzenoid solvents, as well as in hydrocarbons and fuel oils. Aggregation of the gelator takes place because of the function of several weak forces in solution. Extensive π-π stacking between the naphthalene units and hydrophobic interaction exerted by the cholesterol surface encourage gelation. The phenolic À OH serves as an anion binding site. Importantly, 1,4-dioxane-H 2 O gel of 1 is CN À-responsive and shows gel-to-sol phase transformation with color and fluorescence changes selectively in presence of CN-ion. Gelator 1 also exhibits phase-selective gelation (PSG) behaviour and forms stable gels with water-immiscible solvents from their aqueous biphasic mixtures. Such phase-selective gelation of 1 avails some potential and promising real-life applicability in environmental remediation (oil spill recovery and purification of dye-contaminated water). The gel phase selectively removes cationic dyes such as Crystal Violet (CV) and Malachite Green (MG) from aqueous solution in a short time with high efficiency (∼ 99 %).

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Near instantaneous gelation of crude oil using naphthalene diimide based powder gelator

Abstract: A naphthalene diimide based organogelator is reported that solidifies heavy crude oil from water in seconds, even when applied in the powder form.

Cited by 35 publications

References 29 publications

Phenoxy‐Alkyl Maleates as Phase‐Selective Organogelators for Gelation of Edible Oils

Phenoxy‐Alkyl Maleates as Phase‐Selective Organogelators for Gelation of Edible Oils

Phase-selective cellulose nanofibril-based oil gelling agent for oil spill recovery

Cholesterol‐Coupled Diazine‐Phenol Gelator: Cyanide Sensing, Phase‐Selective Gelation in Oil Spill Recovery and Dye Adsorption

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