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Special Issue "Advances in Green Chemistry and Sustainable Chemistry"

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A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: closed (28 February 2010)

Special Issue Editor

Guest Editor
Prof. Dr. Luis Paulo N. Rebelo (Website)

Instituto de Tecnologia Química e Biológica, ITQB, Universidade Nova de Lisboa, Av. da República, Apartado 127, 2780-901 Oeiras, Portugal

Special Issue Information

Dear Colleagues,

An issue devoted to Green and Sustainable Chemistry constitutes a timely exercise, mainly when one witnesses the growing importance of novel alternative solvents, which may not merely act as such but also as new clean extraction media, catalysts, electrolytes, additives, composite nanomaterials, and even as new pharmaceuticals and/or microorganisms metabolite inducers and/or enzyme stabilizers.

Prof. Dr. Luis Paulo N. Rebelo
Guest Editor

Keywords

  • clean solvent technologies
  • recycling
  • (no) toxicity
  • (non -)flammability
  • (non -)volatility
  • biodegradability
  • catalysis
  • atom economy
  • aqueous and alcohol solutions
  • ionic liquids
  • supercritical fluids
  • bio-based materials
  • renewable feedstocks

Related Special Issue

Published Papers (6 papers)

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Research

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Open AccessArticle Eco-Contribution for the Production of N-Arylnitrones: Solvent-Free and Assisted by Microwaves
Int. J. Mol. Sci. 2010, 11(6), 2576-2583; doi:10.3390/ijms11062576
Received: 2 March 2010 / Revised: 4 May 2010 / Accepted: 12 June 2010 / Published: 22 June 2010
Cited by 8 | PDF Full-text (92 KB) | HTML Full-text | XML Full-text
Abstract
A simple green approach for the production of benzylideneaniline oxides is offered. This contribution was performed via the condensation of phenylhydroxylamine with several aryl aldehydes, in the absence of both catalyst and solvent, and using microwave irradiation as the activating reaction mode. [...] Read more.
A simple green approach for the production of benzylideneaniline oxides is offered. This contribution was performed via the condensation of phenylhydroxylamine with several aryl aldehydes, in the absence of both catalyst and solvent, and using microwave irradiation as the activating reaction mode. In addition, good yields of the products were achieved in a short time. It is also worth noting that the work-up procedure is simple and the products do not require further purification. Finally, an interesting comparison without the use of microwave irradiation is also discussed. Full article
(This article belongs to the Special Issue Advances in Green Chemistry and Sustainable Chemistry)
Open AccessArticle The Solubility Parameters of Ionic Liquids
Int. J. Mol. Sci. 2010, 11(5), 1973-1990; doi:10.3390/ijms11051973
Received: 1 March 2010 / Revised: 21 April 2010 / Accepted: 22 April 2010 / Published: 27 April 2010
Cited by 48 | PDF Full-text (353 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The Hildebrand’s solubility parameters have been calculated for 18 ionic liquids from the inverse gas chromatography measurements of the activity coefficients at infinite dilution. Retention data were used for the calculation. The solubility parameters are helpful for the prediction of the solubility [...] Read more.
The Hildebrand’s solubility parameters have been calculated for 18 ionic liquids from the inverse gas chromatography measurements of the activity coefficients at infinite dilution. Retention data were used for the calculation. The solubility parameters are helpful for the prediction of the solubility in the binary solvent mixtures. From the solubility parameters, the standard enthalpies of vaporization of ionic liquids were estimated. Full article
(This article belongs to the Special Issue Advances in Green Chemistry and Sustainable Chemistry)
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Open AccessArticle Physico-Chemical Properties and Phase Behaviour of Pyrrolidinium-Based Ionic Liquids
Int. J. Mol. Sci. 2010, 11(4), 1825-1841; doi:10.3390/ijms11041825
Received: 23 February 2010 / Revised: 25 March 2010 / Accepted: 20 April 2010 / Published: 21 April 2010
Cited by 25 | PDF Full-text (392 KB) | HTML Full-text | XML Full-text
Abstract
A review of the relevant literature on 1-alkyl-1-methylpyrrolidinium-based ionic liquids has been presented. The phase diagrams for the binary systems of {1-ethyl-1-methylpyrrolidinium trifluoromethanesulfonate (triflate) [EMPYR][CF3SO3] + water, or + 1-butanol} and for the binary systems of {1-propyl-1-methylpyrrolidinium trifluoromethanesulfonate [...] Read more.
A review of the relevant literature on 1-alkyl-1-methylpyrrolidinium-based ionic liquids has been presented. The phase diagrams for the binary systems of {1-ethyl-1-methylpyrrolidinium trifluoromethanesulfonate (triflate) [EMPYR][CF3SO3] + water, or + 1-butanol} and for the binary systems of {1-propyl-1-methylpyrrolidinium trifluoromethanesulfonate (triflate) [PMPYR][CF3SO3] + water, or + an alcohol (1-butanol, 1-hexanol, 1-octanol, 1-decanol)} have been determined at atmospheric pressure using a dynamic method. The influence of alcohol chain length was discussed for the [PMPYR][CF3SO3]. A systematic decrease in the solubility was observed with an increase of the alkyl chain length of an alcohol. (Solid + liquid) phase equilibria with complete miscibility in the liquid phase region were observed for the systems involving water and alcohols. The solubility of the ionic liquid increases as the alkyl chain length on the pyrrolidinium cation increases. The correlation of the experimental data has been carried out using the Wilson, UNIQUAC and the NRTL equations. The phase diagrams reported here have been compared to the systems published earlier with the 1-alkyl-1-methylpyrrolidinium-based ionic liquids. The influence of the cation and anion on the phase behaviour has been discussed. The basic thermal properties of pure ILs, i.e., melting temperature and the enthalpy of fusion, the solid-solid phase transition temperature and enthalpy have been measured using a differential scanning microcalorimetry technique. Full article
(This article belongs to the Special Issue Advances in Green Chemistry and Sustainable Chemistry)
Open AccessArticle Synthesis of Hydrophilic and Amphiphilic Acryl Sucrose Monomers and Their Copolymerisation with Styrene, Methylmethacrylate and α- and β-Pinenes
Int. J. Mol. Sci. 2010, 11(4), 1792-1807; doi:10.3390/ijms11041792
Received: 26 February 2010 / Revised: 3 April 2010 / Accepted: 12 April 2010 / Published: 16 April 2010
Cited by 9 | PDF Full-text (532 KB) | HTML Full-text | XML Full-text
Abstract
Herein, we report the synthesis of monomethacryloyl sucrose esters, and their successful free radical homo- and co-polymerisation with styrene, methylmethacrylate, α- and β-pinene. The chemical, physical, structural and surface chemical properties of these polymers, containing a hydrophobic olefin backbone and hydrophilic sugar [...] Read more.
Herein, we report the synthesis of monomethacryloyl sucrose esters, and their successful free radical homo- and co-polymerisation with styrene, methylmethacrylate, α- and β-pinene. The chemical, physical, structural and surface chemical properties of these polymers, containing a hydrophobic olefin backbone and hydrophilic sugar moieties as side chains, have been investigated. Biodegradation tests of the copolymer samples by a microbial fungal culture (Aspergillus niger) method showed good biodegradability. The chemical structure and surface chemistry of the synthesized homo- and co-polymers demonstrate their potential technological relevance as amphiphilic and biodegradable polymers. Full article
(This article belongs to the Special Issue Advances in Green Chemistry and Sustainable Chemistry)
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Open AccessArticle Extraction of Biomolecules Using Phosphonium-Based Ionic Liquids + K3PO4 Aqueous Biphasic Systems
Int. J. Mol. Sci. 2010, 11(4), 1777-1791; doi:10.3390/ijms11041777
Received: 1 March 2010 / Revised: 13 April 2010 / Accepted: 13 April 2010 / Published: 15 April 2010
Cited by 94 | PDF Full-text (236 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Aqueous biphasic systems (ABS) provide an alternative and efficient approach for the extraction, recovery and purification of biomolecules through their partitioning between two liquid aqueous phases. In this work, the ability of hydrophilic phosphonium-based ionic liquids (ILs) to form ABS with aqueous [...] Read more.
Aqueous biphasic systems (ABS) provide an alternative and efficient approach for the extraction, recovery and purification of biomolecules through their partitioning between two liquid aqueous phases. In this work, the ability of hydrophilic phosphonium-based ionic liquids (ILs) to form ABS with aqueous K3PO4 solutions was evaluated for the first time. Ternary phase diagrams, and respective tie-lines and tie-lines length, formed by distinct phosphonium-based ILs, water, and K3PO4 at 298 K, were measured and are reported. The studied phosphonium-based ILs have shown to be more effective in promoting ABS compared to the imidazolium-based counterparts with similar anions. Moreover, the extractive capability of such systems was assessed for distinct biomolecules (including amino acids, food colourants and alkaloids). Densities and viscosities of both aqueous phases, at the mass fraction compositions used for the biomolecules extraction, were also determined. The evaluated IL-based ABS have been shown to be prospective extraction media, particularly for hydrophobic biomolecules, with several advantages over conventional polymer-inorganic salt ABS. Full article
(This article belongs to the Special Issue Advances in Green Chemistry and Sustainable Chemistry)

Review

Jump to: Research

Open AccessReview Green Chemistry in Protected Horticulture: The Use of Peroxyacetic Acid as a Sustainable Strategy
Int. J. Mol. Sci. 2010, 11(5), 1999-2009; doi:10.3390/ijms11051999
Received: 16 March 2010 / Revised: 31 March 2010 / Accepted: 18 April 2010 / Published: 3 May 2010
Cited by 6 | PDF Full-text (83 KB) | HTML Full-text | XML Full-text
Abstract
Global reduction of chemical deposition into the environment is necessary. In protected horticulture, different strategies with biodegradable products are used to control pathogens. This review presents the available tools, especially for the management of protected horticultural species, including vegetables and ornamental plants. [...] Read more.
Global reduction of chemical deposition into the environment is necessary. In protected horticulture, different strategies with biodegradable products are used to control pathogens. This review presents the available tools, especially for the management of protected horticultural species, including vegetables and ornamental plants. An analysis of the potential for degradable products that control pathogens and also encourage other productive factors, such as oxygen in the root system, is presented. Biosecurity in fertigation management of protected horticulture is conducted by using peroxyacetic acid mixtures that serve three basic principles: first, the manufacture of these products does not involve polluting processes; second, they have the same function as other chemicals, and third, after use and management there is no toxic residue left in the environment. The sustainability of protected horticulture depends on the development and introduction of technologies for implementation in the field. Full article
(This article belongs to the Special Issue Advances in Green Chemistry and Sustainable Chemistry)

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