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Applied Sciences
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Ionic Liquids for Green Chemical Technology
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Ionic Liquids for Green Chemical Technology

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: closed (15 July 2018) | Viewed by 12990

Special Issue Editors

Prof. Dr. Francisco José Hernández Fernández

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Guest Editor
Chemical and Environmental Engineering, Technical University of Cartagena, 30202 Cartagena, Spain
Interests: ionic liquid; supercritical fluid; green chemistry; bioenergy; fuel cell
Prof. Dr. Antonia Pérez de los Ríos

E-Mail Website
Guest Editor
Department of Chemical Engineering, University of Murcia, Campus de Espinardo, 30071 Murcia, Spain
Interests: ionic liquid; green chemistry; membrane technology; fuel cell; biofuel
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to announce an upcoming Special Issue focusing on “Ionic Liquids for Green Chemical Technology”, with Guest Editors Francisco José Hernández-Fernández and Antonia Pérez de los Ríos. It is our pleasure to invite you to contribute to this Special Issue.

Ionic liquids are molten salts characterized by low melting points, typically below 100 °C. The unique physical and chemical properties of ionic liquids and the potential to tune these properties by selecting appropriate cations and anions, make ionic liquids remarkably versatile for many chemical applications. Indeed, these media have been used in replacement of volatile organic solvents in a wide variety of chemical processes, such as reaction media in biochemical and chemical catalysis and in separation and purification processes. Applications of ionic liquids for new materials and energy production has also blossomed, though only within the last decade.

We, therefore, invite authors globally to contribute original research articles and review papers defining the most recent developments and ideas in the field of “Ionic Liquids for Green Chemical Technology”. Potential topics include, but are not limited to, the following:

  • Ionic liquids in biochemical/chemical synthesis and catalysis.
  • Ionic liquids in biomass conversion for the production of fine chemicals
  • Ionic liquids in separation processes
  • Ionic liquids in integrated reaction/separation processes
  • Ionic liquids in fuel production: biodiesel and bioethanol production
  • Ionic liquid technologies for fuel cells
  • Ionic liquids in bioplastics and biopolymers
  • Ionic liquids in composite materials and their applications in catalysis
Prof. Dr. Francisco José Hernández Fernández
Prof. Dr. Antonia Pérez de los Ríos
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Ionic liquid
  • green chemistry
  • green solvent
  • composite material
  • bioenergy

Published Papers (3 papers)

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Research

15 pages, 2717 KiB  
Article
Removal of Ionic Liquids from Oil Sands Processing Solution by Ion-Exchange Resin
by Hong Sui, Jingjing Zhou, Guoqiang Ma, Yaqi Niu, Jing Cheng, Lin He and Xingang Li
Appl. Sci. 2018, 8(9), 1611; https://doi.org/10.3390/app8091611 - 11 Sep 2018
Cited by 15 | Viewed by 4235
Abstract
Ionic liquids (ILs) have been reported to be good process aids for enhanced bitumen recovery from oil sands. However, after the extraction, some ionic liquids are left in the residual solids or solutions. Herein, a washing–ion exchange combined method has been designed for [...] Read more.
Ionic liquids (ILs) have been reported to be good process aids for enhanced bitumen recovery from oil sands. However, after the extraction, some ionic liquids are left in the residual solids or solutions. Herein, a washing–ion exchange combined method has been designed for the removal of two imidazolium-based ILs, ([Bmim][BF4] and [Emim][BF4]), from residual sands after ILs-enhanced solvent extraction of oil sands. This process was conducted as two steps: water washing of the residual solids to remove ILs into aqueous solution; adsorption and desorption of ILs from the solution by the sulfonic acid cation-exchange resin (Amberlite IR 120Na). Surface characterization showed that the hydrophilic ionic liquids could be completely removed from the solid surfaces by 3 times of water washing. The ionic liquids solution was treated by the ion-exchange resin. Results showed that more than 95% of [Bmim][BF4] and 90% of [Emim][BF4] could be adsorbed by the resins at 20 °C with contact time of 30 min. The effects of some typical coexisted chemicals and minerals, such as salinity, kaolinite (Al4[Si4O10](OH)8), and silica (SiO2), in the solution on the adsorption of ionic liquids have also been investigated. Results showed that both kaolinite and SiO2 exerted a slight effect on the uptake of [Bmim][BF4]. However, it was observed that increasing the ionic strength of the solution by adding salts would deteriorate the adsorption of [Bmim]+ on the resin. The adsorption behaviors of two ILs fit well with the Sips model, suggesting the heterogeneous adsorption of ionic liquids onto resin. The adsorption of ionic liquids onto Amberlite IR 120Na resin was found to be pseudo-second-order adsorption. The regeneration tests showed stable performance of ion-exchange resins over three adsorption–desorption cycles. Full article
(This article belongs to the Special Issue Ionic Liquids for Green Chemical Technology)
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11 pages, 3368 KiB  
Article
Effect of Ionic Liquids on the Isobaric Vapor-Liquid Equilibrium Behavior of Acetone-Chloroform
by Qinglin Gao, Zongchang Zhao, Peng Jia and Xiaodong Zhang
Appl. Sci. 2018, 8(9), 1519; https://doi.org/10.3390/app8091519 - 01 Sep 2018
Cited by 4 | Viewed by 4166
Abstract
Isobaric vapor-liquid equilibrium (VLE) data of the ternary system acetone + chloroform + 1,3-dimethylimidazolium dimethylphosphate ([MMIM][DMP]) or 1-ethyl-3-methylimidazolium diethylphosphate ([EMIM][DEP]) were obtained at 101.3 kPa. Results indicated that the addition of [MMIM][DMP] or [EMIM][DEP] could eliminate the azeotropic point of the binary system [...] Read more.
Isobaric vapor-liquid equilibrium (VLE) data of the ternary system acetone + chloroform + 1,3-dimethylimidazolium dimethylphosphate ([MMIM][DMP]) or 1-ethyl-3-methylimidazolium diethylphosphate ([EMIM][DEP]) were obtained at 101.3 kPa. Results indicated that the addition of [MMIM][DMP] or [EMIM][DEP] could eliminate the azeotropic point of the binary system of acetone + chloroform when the mole fraction of ionic liquids (ILs) was above 0.15. Besides, the experimental data could be well correlated by the nonrandom two-liquid (NRTL) model. The structures as well as interactions between molecular solvents (acetone, chloroform) and the ion pairs ([MMIM][DMP], [EMIM][DEP]) were studied by quantum chemical calculations. The result indicated that the interaction energies (ΔE) follow the order of ΔE(acetone + [EMIM][DEP]) > ΔE(acetone + [MMIM][DMP]) > ΔE(chloroform + [EMIM][DEP]) ≈ ΔE(chloroform + [MMIM][DMP]), and chloroform had stronger affinity to ionic liquids than acetone. Full article
(This article belongs to the Special Issue Ionic Liquids for Green Chemical Technology)
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10 pages, 1569 KiB  
Article
Treatment of Mineral Oil Refinery Wastewater in Microbial Fuel Cells Using Ionic Liquid Based Separators
by Hasna Addi, Francisco Mateo-Ramírez, Víctor Manuel Ortiz-Martínez, María José Salar-García, Francisco José Hernández-Fernández, Antonia Pérez de los Ríos, Carlos Godínez, El Mostapha Lotfi, Mohammed El Mahi and Luis Javier Lozano Blanco
Appl. Sci. 2018, 8(3), 438; https://doi.org/10.3390/app8030438 - 14 Mar 2018
Cited by 17 | Viewed by 4074
Abstract
Microbial fuel cells (MFCs) are an environmentally friendly technology that can recover electricity directly from several wastes at ambient temperatures. This work explores the use of mineral oil refinery wastewater as feedstock in single-chamber air-cathode MFC devices. A polymer inclusion membrane based on [...] Read more.
Microbial fuel cells (MFCs) are an environmentally friendly technology that can recover electricity directly from several wastes at ambient temperatures. This work explores the use of mineral oil refinery wastewater as feedstock in single-chamber air-cathode MFC devices. A polymer inclusion membrane based on the ionic liquid methyltrioctylammonium chloride, [MTOA+][Cl−], at a concentration of 70% w/w, was used as separator, showing a good efficiency in power production and chemical oxygen demand (COD) removal. The power and the chemical oxygen demand removal reached values of 45 mW/m3 and over 80%, respectively. The evolution of other parameters of the wastewater including nitrites, phosphates and sulphates were also studied. Kjeldahl nitrogen and sulphates were significantly reduced during MFC operation. The results show that mineral oil refinery wastewater can be used as feedstock in air breathing cathode-microbial fuel cells based on polymer ionic liquid inclusion membranes. This configuration could represent a good alternative for wastewater depuration while producing energy during the process. Full article
(This article belongs to the Special Issue Ionic Liquids for Green Chemical Technology)
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