Editorial Board - English
Publication date: February–March 2019Source: Comptes Rendus Chimie, Volume 22, Issues 2–3Author(s): (Source: Comptes Rendus Chimie)
Source: Comptes Rendus Chimie - April 2, 2019 Category: Chemistry Source Type: research
Editorial Board - French
Publication date: February–March 2019Source: Comptes Rendus Chimie, Volume 22, Issues 2–3Author(s): (Source: Comptes Rendus Chimie)
Source: Comptes Rendus Chimie - April 2, 2019 Category: Chemistry Source Type: research
Sommaire / Contents
Publication date: February–March 2019Source: Comptes Rendus Chimie, Volume 22, Issues 2–3Author(s): (Source: Comptes Rendus Chimie)
Source: Comptes Rendus Chimie - April 2, 2019 Category: Chemistry Source Type: research
Second international symposium Clays and ceramics for environmental applications
Publication date: February–March 2019Source: Comptes Rendus Chimie, Volume 22, Issues 2–3Author(s): Liva Dzene, Mejdi Jeguirim, Jocelyne Brendlé, Lionel Limousy (Source: Comptes Rendus Chimie)
Source: Comptes Rendus Chimie - April 2, 2019 Category: Chemistry Source Type: research
Oxygen demand of waters associated with the use of sewage sludge compost and limestone outcrop as a filtration system
Publication date: Available online 12 March 2019Source: Comptes Rendus ChimieAuthor(s): Ana Pérez Gimeno, Jose Navarro Pedreño, María Belén Almendro Candel, Ignacio Gómez Lucas, Antonis A. ZorpasAbstractThe use of composted sewage sludge (SW) and limestone outcrop residue (LR) as water filter systems has been tested. An experimental design based on the use of columns (0–30 cm) was used with both wastes under a heavy irrigation regime (2000 mL/week) for 12 weeks. Half of them were irrigated with nonsaline water (NS) and the others with saline water (S). Four treatments combining the quality of the irrigation water ...
Source: Comptes Rendus Chimie - March 12, 2019 Category: Chemistry Source Type: research
External mass transport process during the adsorption of fluoride from aqueous solution by activated clay
Publication date: Available online 6 March 2019Source: Comptes Rendus ChimieAuthor(s): Sami Guiza, Houda Hajji, Mohamed BaganeAbstractThe removal of fluoride ions from an aqueous solution using a modified sulfuric acid clay was studied in batch adsorption. The adsorption kinetics were studied to identify the retention mechanisms. For kinetics study, perfectly stirred batch experiments were carried out after the adjustment of the parameters influencing the system, such as the pH, the adsorbent dosage, the initial concentration of fluoride ions, and the stirring speed. It appears that the rate of fluoride ion removal (1) inc...
Source: Comptes Rendus Chimie - March 6, 2019 Category: Chemistry Source Type: research
Complexes featuring N-heterocyclic carbenes with bowl-shaped wingtips
Publication date: Available online 27 February 2019Source: Comptes Rendus ChimieAuthor(s): Hamzé Almallah, Mélodie Nos, Virgile Ayzac, Eric Brenner, Dominique Matt, Christophe Gourlaouen, Mohamad Jahjah, Akram HijaziAbstractThree imidazolium salts having their two N-substituents equipped with remote calix[4]arenyl termini have been synthesised and converted into N-heterocyclic carbene (NHC) complexes of the type [PdCl2(NHC)(pyridine)]. An X-ray diffraction study carried out for one of the complexes, namely, trans-[1,3-bis(4-{25,26,27,28-tetrapropyloxycalix[4]aren-5-yl}phenyl)imidazol-2-ylidene](pyridine)palladium(II) dic...
Source: Comptes Rendus Chimie - February 28, 2019 Category: Chemistry Source Type: research
Insights on the influence of the precursors on the sol–gel synthesis of hybrid organic–inorganic saponite-like materials
Publication date: Available online 27 February 2019Source: Comptes Rendus ChimieAuthor(s): Dylan Chaillot, Jocelyne Miehé-Brendlé, Simona BenniciAbstractLamellar organic–inorganic hybrid materials, especially talc- and saponite-like structures, have been broadly investigated over the past decades because of the combination of the thermal and mechanical properties of the inorganic part with the possibility to finely tune hydrophilic–hydrophobic balance, ion exchange capacity, and properties through the choice of the silicon source. These compounds are generally produced by coprecipitation or hydrothermal synthesis met...
Source: Comptes Rendus Chimie - February 28, 2019 Category: Chemistry Source Type: research
Voltammetric oxidation of acetophenone derivatives and benzophenone in acetonitrile on a platinum and glassy carbon electrode
Publication date: Available online 28 February 2019Source: Comptes Rendus ChimieAuthor(s): László Kiss, Sándor Kunsági-MátéAbstractThe voltammetric oxidation of five para-substituted acetophenone derivatives (containing nitro, chloro, bromo, methyl and hydroxyl groups as substituents) and that of benzophenone was studied on a platinum and glassy carbon electrode in acetonitrile media. Electrode passivation was observed in the case when all selected compounds are on a glassy carbon electrode; an oxidation peak appeared between 2.5 and 3 V. The voltammograms of 4′-hydroxyacetophenone showed an additional peak around...
Source: Comptes Rendus Chimie - February 28, 2019 Category: Chemistry Source Type: research
Development of a new cathode for the electro-Fenton process combining carbon felt and iron-containing organic–inorganic hybrids
Publication date: Available online 22 February 2019Source: Comptes Rendus ChimieAuthor(s): Simona M. Miron, Jocelyne Brendlé, Ludovic Josien, Florence Fourcade, Franck Rojas, Abdeltif Amrane, Lionel LimousyAbstractNew kinds of electrodes were prepared for implementation in the electro-Fenton process. Based on carbon felt/organic–inorganic talc like hybrid (TLH), the electrodes were successfully prepared by a simple one-step sol–gel procedure at room temperature, from aminopropyltrimethoxysilane, magnesium and iron(III) hexahydrated chlorides, carbon felt, and ethanol. They were characterized by X-ray diffraction, Four...
Source: Comptes Rendus Chimie - February 23, 2019 Category: Chemistry Source Type: research
Preparation and characterization of H3−2(x+y)MnxCoyPMo12O40 heteropolysalts. Application to adipic acid green synthesis from cyclohexanone oxidation with hydrogen peroxide
Publication date: Available online 22 February 2019Source: Comptes Rendus ChimieAuthor(s): Sihem Mouanni, Tassadit Mazari, Dahbia Amitouche, Sihem Benadji, Leila Dermeche, Catherine Roch-Marchal, Chérifa RabiaAbstractH3−2(x+y)MnxCoyPMo12O40 heteropolysalts (x + y ≤ 3/2 and x, y: 0–1.5) were prepared by a cationic exchange method based on barium sulfate precipitation. Structural and textural properties of salts were examined by several physicochemical techniques such as infrared, scanning electron microscopy-energy dispersive X-ray, and 31P nuclear magnetic resonance spectroscopies, X-ray diffraction diffraction, and...
Source: Comptes Rendus Chimie - February 23, 2019 Category: Chemistry Source Type: research
Regioselective palladium-catalyzed Suzuki–Miyaura coupling reaction of 2,4,6-trihalogenopyrido[2,3-d]pyrimidines
Publication date: Available online 22 February 2019Source: Comptes Rendus ChimieAuthor(s): Yassine Riadi, Saïd Lazar, Gérald GuillaumetAbstractAn effective, regioselective, and novel strategy to the access of 2,4,6-trisubstituted pyrido[2,3-d]pyrimidines is developed from the corresponding 2,4,6-trihalogenopyrido[2,3-d]pyrimidine through a Suzuki–Miyaura coupling reaction involving a novel regioselective halogen discrimination.Graphical abstract (Source: Comptes Rendus Chimie)
Source: Comptes Rendus Chimie - February 23, 2019 Category: Chemistry Source Type: research
Recovery of sterols from vegetable oil distillate by enzymatic and non-enzymatic processes
This article reviews these lipase-assisted sterol extractions and their main advantages and drawbacks in economic and environmental terms. (Source: Comptes Rendus Chimie)
Source: Comptes Rendus Chimie - February 21, 2019 Category: Chemistry Source Type: research
Improved Cu- and Zn-based catalysts for CO2 hydrogenation to methanol
In this study the influence of metal dispersion, spinel formation, and surface properties of binary and ternary catalysts (CuOCeO2, ZnOCeO2, CuOZnOCeO2, and CuOZnOAl2O3) was evaluated. The catalysts prepared by polyol method using polyethylene glycol as a solvent have been tested in the CO2 hydrogenation to methanol performed at atmospheric pressure. The catalysts prepared by polyol method presented improved properties in terms of metal oxide dispersion, morphology (i.e. sponge-like shape for the CeO2-containing catalysts), and a large variety of metal and metal oxide species on the surface. Moreover, the CuOZnOCeO2 and Cu...
Source: Comptes Rendus Chimie - February 14, 2019 Category: Chemistry Source Type: research
Elaboration of alumina-based materials by solution combustion synthesis: A review
Publication date: Available online 28 January 2019Source: Comptes Rendus ChimieAuthor(s): Kawthar Frikha, Lionel Limousy, Jamel Bouaziz, Simona Bennici, Kamel Chaari, Mejdi JeguirimAbstractAlumina (Al2O3) is by far the most commonly used material in industry. It is applied in microelectronics, refractory, catalytic processing, coatings, energy storage, environment protection, and in a wide variety of other industrial applications. In the past decades, various methods have been adopted to synthesize alumina with different properties. Among these methods, solution combustion is considered as an efficient and economic synthes...
Source: Comptes Rendus Chimie - January 29, 2019 Category: Chemistry Source Type: research
