Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Denise Cagniant"'
Autor:
Denise Cagniant, Jean-Michel Trichard, Julien Starck, Pierre Magri, Philippe Burg, R. Gruber, Sébastien Muller
Publikováno v:
Catalysis Today. 119:291-294
Several samples of exhaust diesel soot are investigated by inverse gas chromatography and linear solvation energy relationship (LSER) modelling according to their soluble organic fraction content and their time of exposure in oxidative conditions. Th
Publikováno v:
Fuel. 83:845-850
The preparation of active carbons from nitrogen-enriched lignites was previously described by the authors. This study is carried on with the aim of investigating the role played by the mineral matters of lignites on the process and on the properties
Autor:
Philippe Burg, Denise Cagniant
Publikováno v:
Carbon. 41:1031-1035
Two samples of soot are studied in the present work. The results obtained on a virgin diesel soot (VDS) are compared to those obtained on the corresponding material after removal of its soluble organic fraction (SOF). The adsorption properties of bot
Publikováno v:
Carbon. 41:867-879
Carbonaceous materials are of interest in many areas, and the study of these materials is an increasing development in fields such as environment and energy. For example, they are particularly used in the storage of gaseous combustibles and in the re
Autor:
Philippe Burg, Peggy Fydrych, Denise Cagniant, Pierre Magri, G. Nansé, Anna Jankowska, R. Gruber, J. Bimer
Publikováno v:
Fuel Processing Technology. 79:233-237
One investigated way to prepare selective adsorbents towards mixtures of volatile organic compounds (VOCs) is to modify lignite by nitrogen-enrichment. These chemically modified coals are prepared by condensation of urea with the lignite before the c
Autor:
Denise Cagniant, R. Gruber, Pierre Magri, Stanislaw Berlozecki, G Nansé, J. Bimer, P.D. Salbut
Publikováno v:
Journal of Analytical and Applied Pyrolysis. 65:1-23
The preparation of active carbons containing nitrogen surface functions is considered by ammoxidation of various raw materials like pinewood, peat and lignite. To have an accurate knowledge of the nitrogen functions introduced, diffuse reflectance IR
Publikováno v:
Carbon. 40:1521-1531
The aim of this work is to study the efficiency of the nitrogen enrichment by urea of lignites and the induced changes of the adsorptive properties towards volatile organic compounds (VOCs) of the activated carbons derived from these modified precurs
Publikováno v:
Fuel. 80:107-115
The reductive alkylation of a French petroleum asphaltene (Lagrave) was studied with potassium in THF, in absence of an electron transfer reagent. From the number of butyl and benzyl groups added to the starting asphaltene, the difference of reactivi
Autor:
Maja D. Stefanova, Denise Cagniant, Andrzej Krztoń, Svetlana Grishchuk, R. Gruber, I.E. Nosyrev, Janusz Pajak
Publikováno v:
Fuel. 75:1549-1556
The modifications afforded by several chemical treatments to the main functional groups of a bituminous coal were characterized by diffuse reflectance infrared spectroscopy. The starting materials were the polyanions and potassium coal adducts obtain
Publikováno v:
Fuel Processing Technology. 48:29-37
Previous experiments carried out on several carbonization phases showed a relationship between tar migration and the coking pressure. In the present study, tests analogous in principle to the previous ones were conducted at a pilot scale with 400 kg