Showing papers in "Journal of Catalysis in 2009"

TL;DR: In this paper, an artificial photocatalyst (Pt-PdS/CdS) with a high quantum efficiency (QE) of up to 93% in photocatalytic H(2) production in the presence of sacrificial reagents under visible light irradiation, and is very stable under the reaction conditions.

TL;DR: In this article, a new MOF based on the MIL-53 topology and non-coordinated amino groups has been synthesized and characterized, and the performance of the IRMOF-3 catalysts demonstrates that the basicity of the aniline-like amino group is enhanced when incorporated inside the MOF structure.

TL;DR: In this paper, a novel BiOCl/Bi2O3 photocatalyst functional under visible light irradiation was reported, which demonstrated 5.7 times efficiency in evolving CO2 from gaseous 2-propanol (IP), and 10.5 times of efficiency in removing aqueous 1,4-terephthalic acid (TA) under visible-light (λ ⩾ 420 nm ) irradiation.

TL;DR: In this article, a reverse microemulsion synthesis of palladium and magnesium in silica was used for CO2 methanation, and the Pd-Mg/SiO2 catalyst had greater than 95% selectivity to CH4 at a carbon dioxide conversion of 59%.

TL;DR: In this paper, Ni-based bimetallic catalysts supported on MCM-41 mesoporous molecular sieves (Ni-Ti, Ni-Mn, and Ni-Zr+)-were prepared by direct hydrothermal synthesis.

TL;DR: In this article, a series of 10%Co/ITQ-2 model catalysts have been prepared by combining a reverse micellar synthesis with a surface silylated ITQ 2 delaminated zeolite.

TL;DR: In this article, isotopic switch experiments were used to study the relationship between reaction intermediates and product distribution for the Methanol-to-Olefins (MTO) reaction over the archetype H-SAPO-34 catalyst during a full deactivation cycle.

TL;DR: In this article, the authors report that some base metal oxides such as Co 3 O 4, MnO 2, and NiO are intrinsically active catalysts for CO oxidation below 50°C when pretreated at moderate temperature between 150 and 250°C in a stream of non-reducing dry gases, for example, dry air, CO in air, or N 2.

TL;DR: In this article, a set of nanocrystalline cobalt oxide (Co 3 O 4 )-based catalysts have been prepared by means of an innovative soft reactive grinding (SRG) procedure.

TL;DR: In this article, the effect of oxygen mobility on the bio-ethanol steam reforming of ZrO2-supported cobalt catalysts was investigated, and it was found that the addition of ceria was found to improve the catalytic stability as well as activity.

TL;DR: An accessibility index (ACI) was derived from infrared spectroscopy of substituted alkylpyridines with different size (pyridine: 0.57 nm, 2,6-lutidine; 0.67 nm, and 2,4,6collidine:0.74 nm) as mentioned in this paper.

TL;DR: In this paper, a MOF containing an Au(III) Schiff base complex lining the pore walls has been prepared by a post-synthesis method, which gives higher activity than homogeneous and gold-supported catalysts reported up to now.

TL;DR: In this paper, the photocatalytic oxidation of benzyl alcohol and its derivatives, such as 4-methoxybenzyl alcohol, 4-chlorobenzyl alcohol (CB), 4-nitrobenzinzyl al alcohol (NB), 4-(trifluoromethyl) benzyl (TRB) alcohol, and 4-tertiary-butyl-benzymethyl alcohol (TBBA), into corresponding aldehydes was investigated under both UV and visible light irradiation.

TL;DR: In this article, first-principle density functional theory (DFT) calculations were used to construct an intrinsic kinetic database that was used in a variable time step kinetic Monte Carlo simulation to follow the kinetics and the molecular transformations in the selective hydrogenation of acetylene-ethylene feeds over Pd and Pd-Ag surfaces.

TL;DR: In this article, gold nanoparticles on nanoparticulated ceria have been used to selectively convert 5-Hydroxymethyl-2-furfural (HMF) into DMF under mild conditions (65-130°C, 10 bar O 2 ) in the absence of any base, by using gold nano-articles.

TL;DR: In this paper, the deactivating effects produced by CO2 or H2O presence on its activity for preferential oxidation of CO in a H2-rich stream were explored by means of operando-DRIFTS experiments.

TL;DR: In this paper, the authors showed that the synergy between the MoOx and the Rh metal surface results in a high chemoselectivity and activity in the hydrogenolysis of tetrahydrofurfuryl alcohol.

TL;DR: In this paper, the reaction proceeds through the formation of a well-ordered, oxygen-rich FeO(1.1) film that reacts with CO through the redox mechanism.

TL;DR: In this article, the mechanisms of Co/ceria catalyst deactivation during steam reforming, oxidative steam reforming and partial oxidation of ethanol were explored by comparing the results from different characterization techniques with those obtained from catalytic testing in a fixed-bed reactor.

TL;DR: In this article, the authors investigated the glycerolysis of urea and showed that γ-Zirconium phosphate shows a good activity as a catalyst as it affords 80% of conversion of glycerol under mild reaction conditions.

TL;DR: In this article, a concept is presented, which helps to rationalize the success of the industrially applied preparation route for Cu/ZnO/(Al2O3) catalysts.

TL;DR: In this paper, Ni 2 P catalysts supported on mesoporous silica (MCM-41) were prepared by temperature programmed reduction through a novel method using nickel(II) dihydrogenphosphite, Ni(HPO 3 H) 2, as a precursor salt, and preparing three catalysts with nickel loadings of 5, 10 and 15 wt% denoted as Ni 2P- x, where x is the percentage in weight of nickel.

TL;DR: In this article, the influence of support (silica or titania) and loading of Fe promoter on the activity and selectivity of Rh-based catalysts for the direct synthesis of ethanol from syngas were explored.

TL;DR: In this article, the authors reported the dehydration of glycerol over vanadium phosphate oxide (VPO) catalysts in a gas-phase fixed-bed reactor at temperatures from 250 to 350°C with O2/glycerol ratios of 0 −13.6.

TL;DR: In this paper, a one-pot, two-step procedure using a single gold catalyst has been devised to produce secondary symmetric and asymmetric amines derived from benzylamines with high atom efficiency.

TL;DR: In this paper, reaction kinetics studies were carried out using hexanoic acid, as a representative carboxylic acid, in the presence of 1-pentanol and 2-butanone, as representative biomass-derived alcohol and ketone species.

TL;DR: In this article, commercial H-ferrierite (Si/Al = 29) with the characteristic plate-like morphology was used as starting material for catalytic pyrolysis of low-density polyethylene.

TL;DR: In this article, a global kinetic model is proposed which includes the inhibiting effect of NO 2 on the NO oxidation reaction, and the model predicts the experimental observations for a wide range of temperatures within acceptable error limits.

TL;DR: In this paper, the Mars and van Krevelen mechanism for CO and H2 oxidation was proposed and supported by comparing the model to the experimental data, and the results showed that the mechanism was able to achieve high selectivity.

TL;DR: In this article, the authors used magnetron sputtering to grow 13.9 nm gold nanoparticles on a fumed silica support, which are thermally stable when annealed in an oxygen containing environment up to at least 500 °C.