A5083429639- Inorganic Fluorides and Related Compounds
- Luminescence Properties of Advanced Materials
- Glass properties and applications
- Advancements in Battery Materials
- Extraction and Separation Processes
- Metal-Organic Frameworks: Synthesis and Applications
- Chemical Synthesis and Characterization
- Dielectric properties of ceramics
- Crystal Structures and Properties
- Inorganic Chemistry and Materials
- Phosphorus and nutrient management
- Concrete and Cement Materials Research
- Eurasian Exchange Networks
- Clay minerals and soil interactions
- Minerals Flotation and Separation Techniques
- Advanced Battery Materials and Technologies
- Solid-state spectroscopy and crystallography
- Mine drainage and remediation techniques
- Ferroelectric and Piezoelectric Materials
- Ancient Mediterranean Archaeology and History
- Archaeology and Historical Studies
Chouaib Doukkali University
1997-2023
Université Clermont Auvergne
1989-1998
Centre National de la Recherche Scientifique
1992-1998
Clermont-Ferrand’s Superior National School of Chemistry
1992
Single crystals of α-Ba2P2O7, dibarium diphosphate, were obtained by solid-state reaction. The orthorhombic structure is isotypic with α-Sr2P2O7 and the second polymorph for this composition. built from two different BaO9 polyhedra (both m symmetry), Ba—O distances in ranges 2.7585 (10)–3.0850 (6) 2.5794 (13)–2.9313 (4) Å. These are further linked sharing corners along [010] either edges or triangular faces perpendicularly to form three-dimensional framework. This polyhedral linkage...
Clogging in the heat exchangers of phosphoric acid concentration unit is a phenomenon which hinders proper functioning installation. It results accumulation undesirable solid deposits on pipes and consequently decrease its performance. This deposit mainly anhydrous or hemihydrate gypsum addition to Na2SiF6. Phosphoric desulphation before step allows reducing this effect. Barium carbonate used for retention sulphate ions using simple experimental protocol can easily be inserted into...
The 5D3-5D4 cross-relaxation and de-excitation of the 5D4 level Tb3+ in β-NaYF4 has been investigated by analysis 5D3 decay curves as a function concentration. It is worth noticing that both aforementioned mechanisms are predominantly dipole-dipole character (Ro ~ 2.4 nm Ro 3 respectively). La relaxation croisée – et la désexcitation du niveau de l'ion dans ont été étudiées par l'analyse des déclins luminescence issue en fonction concentration ions Tb3+. Le mécanisme le processus transfert à...
Modeling by full factorial design is used to determine the optimal operating conditions for pretreatment of industrial phosphoric acid from sulfate, fluoride, organic matter, chromium and cadmium. The effects process factors (sediment weight ratio acid, temperature time reaction) on removal these impurities were determined correlated mechanism their elimination. results predicted using linear model show high values regression coefficients (R2 sulfate = 0.97, R2 fluoride matter 0.95, Cr 0.96...
Jbel Igîlîz is a mountain known by the medieval texts for having sheltered place of birth Ibn Tûmart, founder Almohad Empire (1120-1269) which extended to Maghreb and large part Iberian Peninsula.It therefore site great historical importance Middle Ages Maghreb.Situated in Moroccan Anti-Atlas (fig), was located 2004 Fili, A. Van Staëvel, J.-P.1.The excavations that have been undertaken since 2009 shown it offers particularly relevant anchor initiate archaeological study evolution countryside...
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