Showing papers in "Journal of Catalysis in 2011"

TL;DR: In this paper, the influence of zeolite pore size and shape selectivity on the conversion of glucose to aromatics was investigated, and it was shown that large pore spaces and steric hindrance play a major role for aromatic production.

TL;DR: In this paper, two mechanisms, i.e., dissociative and associative mechanisms, over different N-doping configurations are investigated and the results show that N-graphene surface is covered by O with 1/6 monolayer, which is used for reactions in this work.

TL;DR: In this article, the authors investigated the kinetics of the catalytic hydrodeoxygenation of phenol and substituted phenols on the dual-functional catalyst system Pd/C and H(3)PO(4) in order to understand the elementary steps of the overall reaction.

TL;DR: In this article, the catalytic conversion of anisole (methoxybenzene), a phenolic model compound representing a thermal conversion product of biomass lignin, to gasoline-range molecules has been investigated over a bifunctional Pt/HBeta catalyst at 400°C and atmospheric pressure.

TL;DR: In this paper, the hydrogenation/hydrodeoxygenation of furfural was studied on a Cu/SiO 2 catalyst at 230-290 ˚C. Detailed kinetics, density function (DFT) calculations, and spectroscopic studies were combined to investigate this reaction.

TL;DR: In this article, the conversion of furfural in H 2 over SiO 2 -supported Ni and Ni Fe bimetallic catalysts has been investigated at 1 bar in the 210-250°C temperature range.

TL;DR: In this paper, a series of well-characterized acid catalysts, including Zr-P, SiO2-Al2O3, WOX/ZrO2, γ-Al 2O3 and HY zeolite, were compared for aqueous-phase dehydration of xylose.

TL;DR: In this paper, the authors developed an efficient method to generate highly active Pd nanoparticles supported on graphene (Pd/G) by microwave-assisted chemical reduction of corresponding aqueous mixture of a palladium salt and dispersed graphite oxide (GO) sheets.

TL;DR: In this article, the conversion of furfural (FAL) and 2-methyl pentanal (MPAL) under hydrogen has been studied over silica-supported monometallic Pd and bimetallic pd-Cu catalysts.

TL;DR: In this article, the authors studied the methanation of CO2 catalyzed by ceria doped with Ni, Co, Pd, or Ru, and found that Ce 0.95Ru0.05O2 was the best catalysts.

TL;DR: In this paper, a comprehensive reaction network for CO2 hydrogenation to methanol on supported Cu catalysts is studied using periodic density functional theory calculations, and all of the elementary reaction steps in the reaction network are identified in an unbiased way with the dimer method.

TL;DR: Wang et al. as discussed by the authors, 2011CBA00508; Key Scientific Project of Fujian Province [2009HZ0002-1] and National Natural Science Foundation of China [20873108, 20923004]

TL;DR: In this paper, a post-functionalization method for metal-organic frameworks (MOFs) was developed to introduce acidity for catalysis, resulting in a Bronsted sulfoxy acid group attached to up to 50% of the aromatic terephthalate linkers of the structure.

TL;DR: In this article, the authors found that internal framework defects are crucial for the deactivation behavior of ZSM-5 catalysts and that the activity and deactivation rate depend on different physical properties, which means that they can be varied independently.

TL;DR: In this paper, ordered layered double hydroxides (LDHs) consisting of zinc and/or copper hydroxide were synthesized and combined with aluminum or gallium to convert gaseous CO2 to methanol or CO under UV-visible light using hydrogen.

TL;DR: In this paper, in situ techniques including XRD, EPR, XANES, and FT-IR were employed to reveal the structural changes of the Au-Cu bimetallic particles during different pretreatment and reaction conditions, and to clarify the essence of the synergistic effect between gold and copper.

TL;DR: In this paper, a hybrid material was synthesized by reacting H 3 PMo 12 O 40 with the ionic liquid 1-butyl-3-methyl imidazolium bromide, which showed high catalytic activity in the oxidation of dibenzothiophene (DBT) with 29% H 2 O 2 aqueous solution as the oxidant.

TL;DR: Several nanocrystalline Co3O4 catalysts were investigated for their activity and selectivity during the oxidation of 1,2-dichloroethane, which was selected as a model chlorinated volatile organic compound.

TL;DR: In this article, the structure of alumina-supported cobalt catalysts promoted with platinum and their catalytic performance in Fischer-Tropsch synthesis were investigated under realistic reaction conditions.

TL;DR: In this paper, the effect of Pt particle size on important kinetic and mechanistic aspects of the water-gas shift (WGS) reaction, namely the concentration (μmol g−1) and chemical structure of active adsorbed reaction intermediates present in the carbon-path and the hydrogen-path, was investigated for the first time.

TL;DR: A series of highly active supported Pt catalysts, developed by sodium borohydride reduction under mild preparation conditions, were used to eliminate indoor formaldehyde (HCHO) at ambient temperature as discussed by the authors.

TL;DR: In this article, the authors show that the In content of the bimetallic particles increases with increasing bulk In/Pt ratio and reduction temperature, and that an increasing donation of electronic charge from In to Pt occurs with increasing In content in the PtIn particles.

TL;DR: In this paper, a sequential deposition-precipitation method was used to synthesize bimetallic catalysts with different Au/Ag atomic ratios for the reaction of CO oxidation.

TL;DR: In this article, in situ transmission electron microscopy (TEM) images of the Pt nanoparticles were acquired during the exposure to 10 mbar synthetic air at 650 degrees C, revealing that the sintering was governed by the Ostwald ripening mechanism.

TL;DR: In this article, the effects of acid identity on CH3OH dehydration were examined using density functional theory (DFT) estimates of acid strength (as deprotonation energies, DPE) and reaction energies, combined with rate data on Keggin polyoxometalate (POM) clusters and zeolite H-BEA.

TL;DR: In this article, a mixed-linker metal-organic framework based on the Cu-BTC structure has been synthesized in which the benzene-1, 3, 5-tricarboxylate (BTC) linkers have been partially replaced by pyridine-3,5-dicarboxyate (PyDC), and it has been shown that a desired amount of PyDC (up to 50%) can be incorporated without changing significantly the crystal structure.

TL;DR: By integrating strongly plasmonic Au nanoparticles with strongly catalytic TiO 2, a 9-fold improvement in the photocatalytic decomposition rate of methyl orange was reported in this paper.

TL;DR: In this article, the impact of water on the stability of Mo and CoMo sulfide catalysts in hydrodeoxygenation of phenolic compounds was investigated and it was shown that large amounts of water at reaction temperature lead to the exchange of an important fraction of edge sulfur atoms on non-promoted MoS2 catalysts, hence changing the nature of the active sites.

TL;DR: In this paper, a 3D-ordered macroporous (3DOM) La1−xKxCoO3 (x = 0-0.3) perovskite-type oxide catalysts with large pore sizes and interconnected macroporic frameworks were successfully synthesized by a novel method of carboxy-modified colloidal crystal templates (CMCCT).

TL;DR: In this paper, a series of Co catalysts supported on carbon nanotubes (CNTs) and carbon spheres (CSs) with different cobalt particle sizes (3-45mm) were prepared by different methods and using different precursors.