Výsledky vyhledávání - "Rhône-Poulenc Recherches"

Vapour phase hydrolysis : a new access to 2,2,2-trifluoroethanol

Autor: Rhône-Poulenc Recherches, L. Gilbert, H. Pernot, J.M. Popa, Michel Gubelmann, Claude Doussain, Philippe-Jean Tirel

Hydrolyses of 1-halo-2,2,2-trifluoroethanes (HCFC 133a, 133b, 134) in 2,2,2-trifluoroethanol (TFE) were studied in the presence of modified lanthanum phosphates. Thermodynamic equilibrium could be achieved when the reactions were carried out in the v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::41bd00808917702bf0e6ce4f0a23a19d
https://doi.org/10.1016/s0167-2991(08)63384-4

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Kinetic study and modeling of coarsening in a BaTiO3 powder at 850 °C

Autor: Claude Magnier, Michèle Pijolat, Françoise Valdivieso, Michel Soustelle

Publikováno v: Solid State Ionics
Solid State Ionics, Elsevier, 1996, 83 (3-4), pp.283-292. ⟨10.1016/0167-2738(95)00253-7⟩

International audience; The influence of the gaseous atmosphere and the Ba/Ti ratio on the decrease in specific surface area in a BaTiO3 powder was studied at 850 °C. A model involving elementary steps and the BaTiO3 point defects was proposed to qu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7005da5a0619b8208da6a03cfce3241a
https://doi.org/10.1016/0167-2738(95)00253-7

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The Frontier Between Adsorption and Precipitation of Polyacrylic Acid on Calcium Carbonate

Autor: C. Geffroy, Bernard Cabane, Alain Foissy, F. Tournilhac, Jacques Persello

Publikováno v: Revue de l'Institut Français du Pétrole
Revue de l'Institut Français du Pétrole, EDP Sciences, 1997, 52 (2), pp.183-190. ⟨10.2516/ogst:1997017⟩
Revue de l'Institut Français du Pétrole, 1997, 52 (2), pp.183-190. ⟨10.2516/ogst:1997017⟩

International audience; Adsorption of polymers on mineral surfaces allowing colloidal stability have widespread applications in industrial processes. The binding mechanism has been quite well described on oxide surfaces. Mainly in terms of hydrogen b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a263156892d6a2d2cac56989ac5cb2b1
https://hal.archives-ouvertes.fr/hal-02079085/document

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Microgels and ionic associations in solutions of cellulose diacetate

Autor: Henri Chanzy, J. P. Joseleau, C. Leonard, E. Fleury, J. Dubois

Publikováno v: Cellulose
Cellulose, 1994, 1 (2), pp.131-144. ⟨10.1007/BF00819663⟩
Cellulose, Springer Verlag, 1994, 1 (2), pp.131-144. ⟨10.1007/BF00819663⟩

Solutions of cellulose diacetate (CDA) from two sources (cotton linters and wood pulp Floranier) were analysed in various solvents by size exclusion chromatography (SEC). Without special precautions, the SEC chromatograms presented three peaks — or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a41ace20846e317447467efa4120846b
https://hal.science/hal-02318248

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Polyunsaturated aldehydes by direct polyvinylogation of carbonyl compounds using functionalized phosphonates

Autor: Gérard Plé, Yvan Ramondenc, Lucette Duhamel, Pierre Chabardes, Jean-Marie Poirier, Yann Le Gallica, Jérome Guillemonta

Publikováno v: Tetrahedron Letters
Tetrahedron Letters, Elsevier, 1990, 31 (22), pp.3129-3132. ⟨10.1016/S0040-4039(00)94712-9⟩

Carbonyl compounds are converted into polyethylenic aldehydes in a one pot reaction with the anions of phosphonates 1. followed by a mild acidic hydrolysis.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79205e78635d1f4a84e360f0e4e0ae7e
https://hal-normandie-univ.archives-ouvertes.fr/hal-02385892

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Influence of surface area and additives on the thermal stability of transition alumina catalyst supports. I: Kinetic data

Autor: Jean-Pierre Brunelle, Pierre Burtin, Michèle Pijolat, Michel Soustelle

Publikováno v: Applied catalysis
Applied catalysis, Elsevier, 1987, 34, pp.225-238. ⟨10.1016/S0166-9834(00)82458-6⟩

International audience; The influence of surface area and additives on the transformation of transition aluminas into alpha alumina was studied using differential thermal analysis and by measuring the rate of transformation by X-ray diffraction of sa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5fdbbf286b4fb2cf4d890d78fff20ac
https://hal-emse.ccsd.cnrs.fr/emse-00610506

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