Zobrazeno 1 - 10
of 24
pro vyhledávání: '"O.F. Gorriz"'
Publikováno v:
Catalysis Today. :800-804
Dehydrogenation catalysts based on chromia supported on γ-alumina, containing about 3 wt.% of chromium and increasing amounts of tin (up to 3 wt.%), were prepared and characterized by means of several techniques, such as N 2 adsorption–desorption
Publikováno v:
Applied Catalysis A: General. 319:111-118
Cu/SiO2 catalysts were prepared via a sol–gel process in the presence and absence of a hydroxy-carboxylic acid (tartaric acid) as a non-surfactant template or pore-forming agent. These catalysts were characterized by means of nitrogen sorption, X-r
Publikováno v:
Industrial & Engineering Chemistry Research. 40:136-143
The interaction of chromium with an alumina submitted to different pretreatments by temperature-programmed reduction (TPR) was studied. The Cr-alumina interaction is analyzed in relation to texture, structure, and surface acidity of the support, in c
Publikováno v:
Applied Catalysis A: General. 204:33-48
A comparative study of the different preparation conditions required to produce supported copper catalysts by the wet impregnation (WI) and the ion-exchange (IE) methods has been carried out. Two silicas with different textural characteristics, and o
Autor:
Luis E. Cadús, O.F Gorriz
Publikováno v:
Applied Catalysis A: General. 180:247-260
The present paper constitutes the first stage of a systematic study of the influence of precursor nature and structure on the catalyst behavior in dehydrogenation of propane, by varying the nature of the ligands and the nuclearity of the starting com
Publikováno v:
Industrial & Engineering Chemistry Research. 38:396-404
Chromium oxide was supported on different commercial aluminas. Their characteristics were assessed by different techniques (X-ray diffraction, X-ray photoelectron, laser Raman, and electron paramagnetic resonance spectroscopies, and Brunauer−Emmett
Publikováno v:
Applied Catalysis A: General. 165:259-271
A series of copper on silica catalysts prepared by using the ion exchange methods with copper loading between 0.45 and 3 wt% have been studied by means of different techniques such as TPR, EPR, XANES, XRD, XRF, BET and methanol dehydrogenation reacti
Publikováno v:
Applied Catalysis A: General. 153:119-132
This work deals with the performance of mechanical mixtures of SnO2 and MoO3 (prepared separately) in the selective oxidation of methanol. Synergetic cooperations occur between these phases in the oxidation of methanol. The catalysts are investigated
Publikováno v:
Applied Catalysis A: General. 129:93-100
Temperature-programmed desorption was used to investigate the acidic properties of a commercial γ-alumina. A model which accurately interprets the thermodesorption spectra was developed by means of the Monte Carlo method. A discrete distribution in
Publikováno v:
Industrial & Engineering Chemistry Research. 31:2670-2674
Propane dehydrogenation and coke formation over a series of alumina-supported chromia catalysts with different chromia contents were examined. X-ray photoelectron spectroscopy (XPS) showed that the calcined catalysts displayed Cr(VI) and Cr(III) in p