Showing papers in "Catalysis Today in 2011"

TL;DR: In this paper, two types of low-temperature catalysts, the metal oxide catalyst and metal exchanged zeolite catalyst, were reviewed for selective catalytic reduction of NO x with ammonia (NH 3 -SCR) especially at temperature below 200°C.

TL;DR: In this paper, a review of recent trends in the chemistry of these processes for biofuel production and the catalysts used is presented, with a focus on the use of catalysts.

TL;DR: In this paper, a review of the recent advances in the reaction mechanism and kinetics on group 8-10 base metal catalysts is presented, with special attention paid to the roles of metal particles and the deactivation mechanism of the catalyst during the reaction.

TL;DR: In this article, the aqueous phase oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) at 295 K and high pH in a semibatch reactor was evaluated.

TL;DR: Hierarchical zeolites have attracted significant attention during the first decade of the 21st century, and so far this interest continues to increase as mentioned in this paper, however, this particular facet has not yet been reviewed in detail.

TL;DR: In this paper, the authors review the research progress in catalytic hydrolytic dehydrogeneration from ammonia borane for chemical hydrogen storage and discuss hydrogen release from aqueous hydrazine boranes, derivatives of AB, as new hydrogen storage materials.

TL;DR: In the early 1980s, three-way catalysts (TWCs) were used in combination with electronic fuel injection, oxygen sensors and a microprocessor to provide closed loop control of the engine around the stoichiometric point.

TL;DR: In this article, the conversion of CO 2 with H 2 to methanol (MeOH) over a commercial Cu/ZnO catalyst (Sud-Chemie, Germany) was studied under process conditions.

TL;DR: In this paper, a review examines the extent to which carbon materials have been used as catalyst support materials in the fields of energy and environmental chemistry and identifies potential research applications and directions.

TL;DR: The options developed over the past two decades for the conversion of methane into valuable chemicals and fuels while avoiding the high energy requirements of the steam reforming process for producing H2/CO mixtures are briefly examined in this paper.

TL;DR: A review of the studies published worldwide on killing bacteria, fungi, prions and cancer cells using photocatalytic reaction with titanium dioxide is presented in this paper, where the potential use of titanium dioxide nanoparticles in daily life and in development of new selfcleaning and antimicrobial surfaces and paints along with toxicological data are also included in this review.

TL;DR: In this paper, the physicochemical properties of the catalysts were characterized by several techniques, such as XRD, SEM (EDS), TEM, and FT-IR, and the effects of catalyst loading, peroxymonosulfate concentration and reaction temperature on phenol degradation were investigated.

TL;DR: In this article, a high pressure batch reactor and a fixed bed flow reactor were used to produce high quality transportation fuel from low-grade resources for cooking oil and trapped grease over sulfide catalysts.

TL;DR: In this article, the authors compared the performance of methanol to olefins (MTO) conversion over three zeolites with different topologies, namely SAPO-34, H-ZSM-5 and ZSM-22.

TL;DR: Graphene-based semiconductors nanocomposites were synthesized via a single-step photocatalytic reduction process in this article, which demonstrated that a range of photocatalyststs, not just TiO2, can be used to reduce and incorporate graphene oxide (RGO), which has higher photoelectrocatalytic efficiencies than their parent materials.

TL;DR: In this paper, the authors studied the selectivity of 5-hydroxymethyl-2-furfural (HMF) with ethanol over a series of mesoporous silica catalysts.

TL;DR: In this article, water taken from the outlet of a wastewater treatment plant from the South East of Spain has been treated by means of TiO2-based solar photocatalysis, and the presence of significant amounts of nine emerging pollutants (order of magnitude of ng/l): trimethoprim, ofloxacin, enrofloxacIN, clarithromycin, acetaminophen, diclofenac, caffeine, thiabendazole and carbamazepine; and trace amounts of another two were detected, namely acetamip

TL;DR: In this paper, various catalytic methodologies for the utilisation of renewable biomass for the sustainable production of liquid fuels and commodity chemicals are reviewed, focusing on second generation processes starting from lignocellulose as a sustainable feedstock, thus circumventing the food vs fuel dilemma, and on green features of these new processes.

TL;DR: In this article, the selective catalytic reduction (SCR) of NOx with NH3 over environmental-friendly iron titanate catalyst (FeTiOx) was investigated in detail.

TL;DR: In this article, different Mg-Al mixed oxides derived from hydrotalcites were prepared and tested for ethanol catalytic condensation and different procedures for preparing the catalysts lead to different distributions of acid and basic sites, and therefore to different reactivity.

TL;DR: In this paper, an effective photocatalytic reduction of CO2 using AgBr/TiO2 photocatalyst under visible light (λ ≥ 420nm) was studied, and the results showed that 23.2% AgBr and TiO2 had relatively high reduction yields under visible-light irradiation for 5h, with a methane yield of 128.56, methanol yield of 77.87, ethanol yield of 13.28, and CO yield of 32.14μmolg−1, respectively.

TL;DR: In this article, the authors highlight key catalytic discoveries that led to commercialized, industrial processes and show how catalysis evolved over the last 250 years into major industries focused not only at catalyst production, but also significantly impacting the production of commodity, specialty and fine chemicals, as well as petrochemical, petroleum, emissions control, and polymerization.

TL;DR: In this article, the effect of pre-treatment of lignocellulosic biomass (beech wood) was investigated in terms of product yields and bio-oil composition.

TL;DR: In this paper, the authors evaluated the performance of Fe alginate gel beads in the presence of H2O2 under visible light irradiation and showed that high concentration of FeCl3 caused a significant increase in the Fe content of the gel bead during preparation.

TL;DR: In this article, a combinatorial approach was used to obtain a large variety of catalytic properties of μ-nitrido diiron phthalocyanine complexes, e.g., mild catalytic oxidation of methane in water at near-ambient conditions.

TL;DR: In this article, the performance of catalysts in NO selective catalytic reduction by NH3 was tested in the temperature range of 100-500 ǫ c. In situ diffuse reflectance infrared transform spectroscopy (DRIFTS) study was carried out for revealing the reaction mechanism.

TL;DR: In this paper, a detailed investigation on how charge compensating anions and synthesis pH affect the structural properties and CO2 adsorption capacity of Mg-Al hydrotalcites (HTs).

TL;DR: In this article, the photocatalytic degradation and mineralization of the antibiotic sulfamethoxazole (SMX) in aqueous TiO 2 suspensions was investigated.

TL;DR: In this paper, the performance of Ni, NiRh, NiCo and NiCo catalysts supported on Ce-Zr-oxide synthesized by pseudo sol-gel method have been investigated.

TL;DR: In this article, a microkinetic model is developed in the free energy landscape based on density functional theory (DFT) to quantitatively investigate the reaction mechanism of chemoselective partial hydrogenation of crotonaldehyde to crotyl alcohol over Pt(1.1).