Showing papers in "Journal of Molecular Catalysis in 2012"

TL;DR: In this article, a co-precipitation method was used for the ethynylation of formaldehyde to 1,4-butynediol and the obtained catalysts were characterized by N2 physisorption, TEM, XRD, H2-TPR and FT-IR.

TL;DR: In this paper, the surface area and structure of the catalysts were characterized by BET and XRD and the results of XRD characterization indicated that the excellent performance of the catalyst was closely related to the formation of a new compound with XRD diffraction peaks at 25.6 at 28.5.

TL;DR: In this paper, an efficient catalyst composed of calcium pyrophosphate and calcium phosphate was developed to catalyze dehydration of lactic acid to acrylic acid, which achieved a higher conversion rate and higher selectivity toward acrylic acid.

TL;DR: In this paper, a rare earth Nd salt of Dawson type heteropoly acid (Nd3P2Mo15V3O62·nH2O) was prepared by doping rare-earth Nd in H9P 2Mo15v3O 62·n H2O, and characterized by infrared spectroscopy (FTIR), X-ray diffraction (XRD).

TL;DR: In this paper, the kinetics of polyethylene polymerization catalyzed by supported binuclear metallocene/MAO/SiO 2 in slurry phase was investigated and the effects of polymerization factors, such as diffusion index, polymerization pressure and temperature on the kinetic parameters such as reaction order(n), the apparent activation energy(E a) and the chain propagation rate constant(K p) were determined and the concentration of active site(C*) was obtained by kinetic extrapolation method.

TL;DR: In this article, the effects of key factors, such as the mixing modes of material, aging time, crystalization temperature, and dosage of H2O on the crystallinity and crystal size were investigated.

TL;DR: Using basic copper acetate(Cu2(OH)3(OCOCH3)·H2O) which was prepared by hydrothermal method as Precursor,Copper-Manganese catalysts were prepared by ion exchange and calcinations as mentioned in this paper.

TL;DR: In this article, an analysis of methanol to hydrocarbons system has been carried out, where Enthalpy change, Gibbs free energy change and equilibrium constant at different temperatures were calculated for each reaction.

TL;DR: In this paper, the physical structure and chemical properties of the prepared Cu/S-TiO2 were characterized by UV-Vis, XRD, XPS,EXAFS and FESEM techniques.

TL;DR: In this article, the photocatalytic degradation of p-fluorobenzoic acid in sewage has been studied in the presence of Pt/TiO2, and the effect of reaction time, initial pH and initial concentration of pollutant on photocatalysis degradation were investigated.

TL;DR: In this paper, a biodegradable poly[3-hydroxypropionic acid](PHP) was obtained by ester exchange polymerization of 3-Hydroxyl propionic acid methyl ester(3-HPM) using SO3H-functionalized ionic liquids as catalysts.

TL;DR: In this article, a study on the efficacy of tin tetrachloride supported on silica aerogels catalyst(Sn/Si) in the esterification of maleic anhydride (MA) with butanol(BO) at reflux in which DBM and DBF are synthesized directly.