Zobrazeno 1 - 10
of 149
pro vyhledávání: '"H. Charcosset"'
Publikováno v:
Adsorption Science & Technology, Vol 2 (1985)
Some 10 wt % Pt supported on zirconia catalysts were investigated by hydrogen and oxygen chemisorptions and titrations by means of automated catharometric equipment (frontal method). Microcalorimetry was further used to determine the heats of oxygen
Externí odkaz:
https://doaj.org/article/e0707aa3f81040d8b057a35fae6634a8
Autor:
R. Maurel, D. Jaunay, C. Bolivar, H. Charcosset, Mme G. Leclercq, H. Mendez, L. Tournayan, C. Bertizeau, Roger Fréty
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 88:577-597
In an attempt to improve our knowledge of bimetallic catalysts usually used in reforming we studied three series of catalysts: Pt-Re, Pt-Ir and Ir-Os. For our Pt-Re catalysts, both metals are reduced to the metallic state and a catalytic effect of pl
Autor:
H. Charcosset, Diego Cazorla-Amorós, Angel Linares-Solano, C. Salinas-Martinez de Lecea, J. P. Joly
Publikováno v:
ChemInform. 22
Autor:
H. Charcosset, C. Salinas-Martinez de Lecea, Angel Linares-Solano, Diego Cazorla-Amorós, J. P. Joly
Publikováno v:
Energy & Fuels. 4:467-474
Publikováno v:
Fuel. 69:856-860
An e.s.r. study of THF-insoluble fractions obtained after coal hydroliquefaction has allowed the parameter dR° to be defined. This parameter reflects the ability of the reactive medium to hydrogenate radicals formed during thermal cleavage of coal,
Autor:
C. Salinas-Martínez de Lecea, H. Charcosset, Diego Cazorla-Amorós, J. P. Joly, Angel Linares-Solano, N.R. Marcilio, Amelia Martínez-Alonso
Publikováno v:
Fuel. 69:878-884
The purpose of this study was to characterize the calcium (nature, amount of various species and state of division) in carbonaceous materials such as low-rank coal char or a model char (obtained by pyrolysis of a polymeric resin at 1273 K under an in
Publikováno v:
Hyperfine Interactions. 52:297-302
Iron Mossbauer spectroscopy has been performed on liquefaction residues of two different French coals. In a three-stage liquefaction of high volatile bituminous coal (Freyming), without an added catalyst, the coal pyrite is not entirely converted int
Publikováno v:
Catalysis Today. 7:229-238
The catalytic effect of calcium during air gasification of carbonaceous materials at mild temperature is maximum when the calcium is ion exchanged on their surface. A pyrolysis or/and HNO 3 oxidation treatment performed before the cation exchange ope
Autor:
M. Oberson, Brajendra K. Sharma, Michèle Besson, P. Bussière, R. Bacaud, H. Charcosset, Gérald Djéga-Mariadassou, D. Brodski
Publikováno v:
Fuel. 69:35-43
Although tin compounds have been shown to be active in hydroliquefaction of coal, the active tin species during the liquefaction has not yet been elucidated. Some recent work suggests that metallic tin promotes the liquefaction reaction. In this stud
Publikováno v:
Fuel Processing Technology. 24:163-169
An optimized experimental procedure was used for the evaluation of the catalytic activity of various pure and doped iron oxide based catalysts in the hydroliquefaction of two different rank coals. A multi-stage operation (sulphidation, pre-hydrogenat