Zobrazeno 1 - 10
of 112
pro vyhledávání: '"J.P. Bonnelle"'
In the field of heterogeneous catalysis. it is convenient to distinguish. in a perfectly unjustified and over··simplified way. bet:leen metal catalysts. 2nd the other catalysts. The fj.J'st are easy to define : they are those in which a reduced met
Publikováno v:
Applied Catalysis A: General. 84:169-186
Several methods of preparation are reported for compounds based on transition metals (Me = Ni,Cu,Co) and rare earth elements (Re = La,Ce,Pr,Nd ...). The starting materials were intermetallics or nitrate mixtures. In the latter case the precursors of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d21ffe117fa54862d8901fafbfab479
https://doi.org/10.1016/0926-860x(92)80114-r
https://doi.org/10.1016/0926-860x(92)80114-r
Some new rare-earth based oxide catalysts are used to partially hydrogenated the rapeseed oil. The binary oxide Ce-Ni-O presents a good selectivity in the partial hydro-genation but a large extent of Z/E isomerization. The ratio of the iodine value (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::727f4f2cd36850c70eec8b8c763d64dd
https://doi.org/10.1016/s0167-2991(08)63325-x
https://doi.org/10.1016/s0167-2991(08)63325-x
Autor:
J.P. Bonnelle, R. Hubaut
The copper-chromium oxide has two different active sites in a reduced state. The cuprous ions associated with a hydride and two anionic vacancies are the hydrogenation (HYD) sites. The chromium ions in the same environment are the sites where occur t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b498e5590c742053131113ca74e78f4
https://doi.org/10.1016/s0167-2991(08)61133-7
https://doi.org/10.1016/s0167-2991(08)61133-7
Catalysts containing 0.2-4 wt.% MoO3 on anatase (AN) and rutile (RT) titania were characterized by ESR, ISS, surface potential (SP) techniques, acidity probe reactions (decomposition of isopropanol and butene-1 izomerization) and tested in butene-1 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1158eeb7b4b71a7f5cbbb893c9a0b108
https://doi.org/10.1016/s0167-2991(08)60211-6
https://doi.org/10.1016/s0167-2991(08)60211-6
Publikováno v:
Applied Catalysis. 22:243-255
Reactions of various allylic alcohols were studied on a copper chromite catalyst. Three different reactions were observed: hydrogenation, isomerization and deoxygenation. By comparison with some other model compounds such as butanol, butanone and but
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::078417258c3e904fc325a186e0eec157
https://doi.org/10.1016/s0166-9834(00)82633-0
https://doi.org/10.1016/s0166-9834(00)82633-0
Publikováno v:
Journal of Molecular Catalysis. 9:357-368
By varying the nature of the substituents (R may be alkyl or aryl) at the nitrogen atom of the ligands φ2PNR1R2, a good increase in selectivity to normal aldehyde is observed during hydroformylation of hex-1-ene on RhClCO (Pφ2NR1R2)2 catalysts. It
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7936d08b9b6d865a59cddfe01cf896ec
https://doi.org/10.1016/0304-5102(80)80028-9
https://doi.org/10.1016/0304-5102(80)80028-9
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 7:151-162
ESCA measurements on cobalt oxides reveal (1) chemical shifts which correlate with effective cationic charge; (2) satellite peaks which indicate the transitions taking place; (3) the presence of two oxygen peaks O(I) and O(II) for readily reducible t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd96dcfaceca15f61818a8ba7cd68cb0
https://doi.org/10.1016/0368-2048(75)80047-8
https://doi.org/10.1016/0368-2048(75)80047-8
Publikováno v:
Journal of Organometallic Chemistry. 186:389-400
Treatment of nickel(II) tetrafluoroborate with some open-structured ligands of type 1,4,8,11-tetrathiaundecane (TTU) gives complexes which are characterised by laser microprobe mass analyses (LAMMA) and photoelectron spectroscopy (ESCA).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a45c7032a5f2c2491a09589804cd9d3
https://doi.org/10.1016/s0022-328x(00)82419-5
https://doi.org/10.1016/s0022-328x(00)82419-5
Autor:
J.P. Bonnelle, A. D'huysser
Publikováno v:
Applications of Surface Science. 3:38-47
Resume “Copper chromites” oxides are known to be catalysts in the selective hydrogenation of polyalkenes in monoalkenes or in the reduction of fatty esters into higher alcohols. X-ray photoelectron spectroscopy has been used to characterize the n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7232fe88ffd70f8938d9b2e308c395de
https://doi.org/10.1016/0378-5963(79)90059-x
https://doi.org/10.1016/0378-5963(79)90059-x