Showing papers in "Catalysis Science & Technology in 2012"

TL;DR: Graphene is one of the most promising materials in nanotechnology and from a theoretical point of view, it provides the ultimate two-dimensional model of a catalytic support as mentioned in this paper, and some promising results have already been obtained with few-layer graphene.

TL;DR: In this article, the features of deconstruction of hemicellulosic biomass by acid hydrolysis to produce pentose sugar feedstock for furfural synthesis have been discussed in brief.

TL;DR: In this article, a review of mixed metal oxides (MMOs) in organic synthesis is presented, containing alkali, alkaline, rare earth and noble metals, and their applications are summarized.

TL;DR: An overview of the type of catalysts used for this reaction, the mechanisms with which they operate and the parameters influencing their activity and selectivity are presented and discussed critically in this paper, where the main challenges to be tackled in this vibrant area of research are highlighted.

TL;DR: Controlled mesoporosity is successfully introduced into zeolite Y crystals through a surfactant templating approach as mentioned in this paper, which shows superb hydrothermal stability in the resulting mesostructure, while retaining strong acidity.

TL;DR: In this paper, a novel non-TiO2 photocatalyst, Bi2WO6, which shows high activity under visible light irradiation, is reviewed, as well as several methods for improving the photocatalytic activity.

TL;DR: In this article, the incorporation of GR or CNT into CdS significantly enhanced the photocatalytic activities for both reactions and significant band-gap narrowing was observed due to the incorporation.

TL;DR: In this article, the advantages and disadvantages of current electrochemical, photo-electrochemical and bio-electronic processes for CO2 conversion are discussed, and future directions for research in this area are discussed.

TL;DR: In this article, a polymeric nitrogen-rich graphitic carbon nitride (g-C3N4-T) nanocatalyst was synthesized for the first time with a facile approach by directly treating low-cost thiourea in air.

TL;DR: Mesoporous graphitic carbon nitrides were synthesized by a thermal-induced polymerization of NH4SCN on the surface of silica nanoparticles as the templates as mentioned in this paper.

TL;DR: This review surveys the advances in target- and diversity-oriented asymmetric organocatalytic Michael reactions developed between 2009 and early 2011.

TL;DR: In this article, a novel graphene oxide (GO) enwrapped Ag3PO4 composite was fabricated through an ion-exchange method of CH3COOAg and Na2HPO4 in the presence of GO sheets.

TL;DR: A series of Fe3+-containing porous metal-organic frameworks (MOFs) have been tested for the rearrangement of α-pinene oxide to camphonelal and isopinocamphone in the absence of solvent.

TL;DR: In this paper, the authors focus on experimental and theoretical studies related to in situ observations of surface segregation and phase separation phenomena taking place on the outermost surface layers of alloy catalysts.

TL;DR: In this paper, the mechanism of fixation of CO2 with ethylene oxide catalyzed by quaternary ammonium salts by experimental and density functional theory (DFT) studies is investigated.

TL;DR: This perspective article outlines the recent approaches on the heterogeneous catalysis for this challenging subject with related literatures.

TL;DR: In this paper, the photocatalytic activity of co-doped Ag-ZnO was investigated for the degradation of Napthol Blue Black (NBB) dye in aqueous solution under solar light irradiation.

TL;DR: In this article, the performance of catalysts comprising zeolite ZSM-5 impregnated with precious metals including Ag, Cu, Ni, Pd, Ir and Ru, have been tested for the methanol to hydrocarbons reaction in a continuous flow fixed bed reactor.

TL;DR: The ZIF-9 catalyst was easily isolated from the reaction mixture by simple filtration and reused several times without a significant degradation in activity and there was no contribution from leached active species and conversion was only being possible in the presence of the solid catalyst as discussed by the authors.

TL;DR: In this paper, a series of mesoporous niobium phosphates were synthesized at different pH values in an aqueous solution, which exhibited high surface area (213-297 m2 g−1), narrow pore size distribution (3-4 nm) and a great number of strong Lewis and Bronsted acid sites.

TL;DR: A reaction network indicating a high selectivity for platinum- catalysed aromatic carbon–oxygen bond cleavage accompanied by acid-catalysed methyl group transfer reactions is described.

TL;DR: In this paper, the authors investigated the catalytic activity and electrochemical properties of polyaniline nanofibers (PANINFs) and found that such nanocomposites exhibit excellent catalytic capability toward reduction of 4-nitrophenol to 4-aminophenol by NaBH4 and exhibit remarkable catalytic performance for H2O2 reduction.

TL;DR: In this article, a deprotonated mesoporous graphitic carbon nitride (mpg-C3N4) was achieved by a simple method of treatment of as-prepared materials with different basic aqueous solutions (K2CO3, KOH, tBuOK).

TL;DR: In this article, the authors demonstrated that the mixture of reduced graphene oxide (CuONF/rGO) nanocomposites can serve as an effective photocatalyst for degradation of rhodamine B (RhB) under UV irradiation.

TL;DR: A review of recent developments in the use of iron catalysts for asymmetric transformations, including hydrogenations, transfer hydrogenation, hydrosilylation and oxidation reactions, can be found in this paper.

TL;DR: In this paper, the authors provide an in-depth analysis of lanthanide ion semiconductor photocatalysts with focus on titania-based photocatalyst, and delineate the underlying factors responsible for the enhanced activities observed by several research groups.

TL;DR: In this article, the authors show that the catalytic activity is directly proportional to the increase of surface area of the sulfide phases (Co9S8 and MoS2) present in Co-promoted MoS 2 unsupported catalysts.

TL;DR: This perspective aims at encouraging the judicious use of first-principles kinetic models in industrial settings based on a critical discussion of present-day best practices, identifying existing gaps, and defining where further progress is needed.

TL;DR: This review of Morita–Baylis–Hillman carbonates and acetates in organocatalysis aims to cover these exciting reactions, paying special attention on the nature of the MBH adduct.

TL;DR: In this paper, the photocatalytic performance of ZnO-reduced graphene oxide (RGO)-carbon nanotube (CNT) composites was investigated in the degradation of methylene blue.