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Reaction Kinetics, Mechanisms and Catalysis
Authors: Luis Ernesto Sandoval-Díaz, Ericsson David Coy-Barrera, and Carlos Alexander Trujillo

preparation; the literature where silica supports for diverse catalytic systems are used is very abundant, especially for mesostructured materials [ 7 – 12 ]. Silica gels can be produced by the polymerization of silica in aqueous solutions, which might

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inert and thermally stable under synthesis conditions. Selection of the proper salts A great number of salts S form crystalline solvates due to reaction with methanol (1) Analysis of the literature data on methanol

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ethylene trimerization are catalyst precursors (metal compounds) and ligands in a ternary system or, in the quaternary system, promoter and cocatalyst (alkyl aluminum or alkyl aluminum oxide). The Literature shows that when Ni, Co, Mn, Cu, Mo, To, V

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described in a literature [ 9 ]. Temperature programmed reduction (TPR) measurements were carried out to investigate copper dispersion and reducibility. Results and discussion Physicochemical properties of the prepared catalysts

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emphasized that, according to literature data, the different nature of the ads -CO species (carbonyl, formate, carbonate, and carboxylate) is determined by the surface coverage, temperature, and the presence of other components [ 5 ]. It may also

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–O a ), 960 ν as (Mo=O), 860 ν as (Mo–O b –Mo), and 780 ν as (Mo–O c –Mo). Similarly to Pt–PMo 12 [ 7 ] changes in the spectrum were observed for the Ir–PMo 12 after calcination at 450 °C (spectrum 1, Fig. 2 ). According to literature data, the

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ions. MgAl 2 O 4 was synthesized according to a method described in the literature [ 33 ]. Magnesium aluminate spinel supported platinum catalysts with different Pt loadings were prepared using a colloidal deposition method. A platinum

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64 was synthesized according to the literature, using tetrapropylammonium bromide as template, n-butylamine as base, colloidal silica and tetrabutylorthotitanate as silicon and titanium source [ 19 ]. Ag deposition was carried out by a twinned

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catalysts with 1, 3, and 10% Ag doping as well as silver-free were characterized by H 2 -TPR to obtain information on interaction between VO X species and dispersed silver. The results are shown in Fig. 3 . According to the literature [ 23 ], V 2 O 5

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with an online gas chromatograph (SHIMADZU, GC-8A) equipped with a packed column (TDX-01) and a thermal conductivity detector. The conversion and selectivity were calculated as described in the literature [ 23

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