Showing papers in "Catalysis Today in 2017"

TL;DR: A review of the electrosynthetic ammonia production devices can be found in this paper, where the authors highlight the key remaining challenges in the electro-synthesis of ammonia and summarise the seminal literature in the field.

TL;DR: In this article, the progress of the Haber-Bosch process in both solid and liquid electrolyte cells is reported, and the experimental studies are divided into high (T < 500°C), intermediate (500°C>T < 100°C) and low (T > 0.5°C).

TL;DR: In this paper, the authors investigated the chemical resistance of glassy carbon under electrochemical oxidative conditions, which occur under oxygen-involving reactions like oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).

TL;DR: In this paper, a series of nickel catalysts supported on CexZr1-xO2(CZ) were investigated for CO2 hydrogenation to methane were investigated at reaction temperatures between 200 and 350 °C.

TL;DR: The photocatalytic membrane reaction (PMR) as discussed by the authors is a hybrid process combining membrane separation and heterogeneous photocatalysis, which can be used to perform a variety of chemical reactions (e.g. degradation or synthesis of organic compounds).

TL;DR: In this paper, the authors highlight the recent advances in methane conversion processes at high and low temperatures and discuss the progress in developing heterogeneous catalytic and electrocatalytic systems to overcome this challenge.

TL;DR: In this paper, a machine-learning algorithm was integrated into the descriptor-based design approach for rapid screening of transition-metal catalysts, which can capture complex, nonlinear adsorbate/substrate interactions with the root mean squared errors (RMSE) ∼ 0.12

TL;DR: In this paper, a series of co-doped ZnO (YVZ) nanoparticles have been synthesized by surfactant assisted sol gel method with an aim to enhance the photocatalytic activity under visible light for degradation of organic pollutants.

TL;DR: In this paper, a comprehensive overview on the preparation of photocatalytic nanocomposite materials and their application for pollutants degradation is provided, focusing on modern synthetic approaches to synthetize UV and visible light active nanocatalysts, on their post-synthesis surface functionalization and on their incorporation in suitable host matrices toward nanocomposition preparation.

TL;DR: In this paper, the authors compared the performance of associative (AM) and dissociative (DM) mechanisms with the Mars-van Krevelen (MvK) mechanism for catalyzing N 2 electroreduction to ammonia.

TL;DR: In this article, the ability of biochar to activate sodium persulfate (SPS) for the oxidation of sulfamethoxazole (SMX), a representative antibiotic belonging to the family of emerging micro-contaminants, was tested.

TL;DR: In this paper, the authors present a summary of the recent progress on the utilization of wall-coated and packed-bed microreactors for carrying out heterogeneously catalyzed gas-liquid and liquid-liquid reactions, with a focus on the microreactor operation principles and selected reaction examples with promising application potential.

TL;DR: In this paper, a homogeneous Ni-Co alloy supported on silica is prepared with oleylamine/oleic acid (OAm/OAc) organic pair by incipient wetness impregnation (IWI) method.

TL;DR: A series of ZrO2 catalysts supported on mesoporous SBA-15 silica were synthesized and examined as catalysts in the production of γ-valerolactone (GVL) from biomass-derived levulinic acid and its esters via a catalytic transfer hydrogenation (CTH) using several alcohols as hydrogen donors as mentioned in this paper.

TL;DR: A review of operando spectroscopy studies concerning all catalyst types and applications can be found in this paper, where historical and current operando studies are extensively reviewed, and the number of publications continues to increase.

TL;DR: In this paper, three-dimensional cubic mesoporous carbon (CMK) materials were employed for adsorptive and oxidative removal (via heterogeneous persulfate activation) of toxic phenolic compounds.

TL;DR: In this paper, the concept of electron donation and the nature of the adsorbed species are examined, and their relationship with electronic and structural factors related to dinitrogen activation is considered.

TL;DR: In this paper, the single metal site in a porphyrine-like structure has a simple advantage of limiting the competing Hydrogen Evolution Reaction (HER), and the difference in binding site structure gives a fundamental energy-shift in the scaling relation between the COOH* vs. H* intermediate (CO2RR vs. HER).

TL;DR: In this paper, density functional theory calculations were carried out on a new class of materials in pursuit of nitrogen activation and electrochemical ammonia formation at ambient conditions, where nitrogen is reduced to ammonia and the source of proton provided by the anode could be either water splitting or H 2.

TL;DR: In this paper, hierarchical BiOX (X: Cl, Br, I) microspheres were successfully synthesized by a microwave-assisted solvothermal method from bismuth (III) nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O) using ethylene glycol and ethanol as solvents.

TL;DR: In this paper, a series of Cu-ZnO/Al2O3/ZrO2 catalysts were obtained and tested for methanol synthesis from CO2 hydrogenation at the reaction temperature of 463 K and 5.0 K.

TL;DR: In this article, multiwall carbon nanotubes (MWCNT)-loaded TiO2 nanotube (TNT) composites were synthesized by hydrothermal method.

TL;DR: In this article, the structural evolution of an industrial Pd/C catalyst in the presence of hydrogen and acetylene was determined by means of in situ X-ray absorption spectroscopy and Xray powder diffraction.

TL;DR: In this paper, the effect of Pt particle size and reaction conditions (e.g., temperature and space velocity) on the selectivity of CO and CH4 was identified, and the Pt-Ov-Ti3+ species formed at the interface between Pt and reducible TiO2 support was identified as the active sites for the formation of CO.

TL;DR: In this paper, the authors focus on the overview of research and development of methanol-based coal conversion technologies in China, and discuss the commercial and successfully demonstrated units in China on both the synthesis and its utilization.

TL;DR: In this article, the photocatalytic performance of the resulting hybrid materials was compared with pristine supports using phenol and methylene blue (MB) under two different irradiation conditions (UV-vis and Vis only light).

TL;DR: In this paper, a review of the photocatalytic degradation of pollutants in the presence of natural organic matter (NOM) using TiO2 as a photocatalyst is presented.

TL;DR: In this article, a self-supported integrated electrode exhibits outstanding catalytic activity towards the hydrogen evolution reaction (HER), which can deliver current densities of −10, −20 and −100 mV at small overpotentials of 68, 94 and 134 mV, respectively.

TL;DR: In this article, a graphitic carbon nitride/titania (g-C 3 N 4 /TiO 2 ) composites coupled with calcium carbonate (CaCO 3 ) were synthesized by annealing mixtures of melamine, commercial TiO 2 (P25) and calcium acetate (CA(CH 3 COO) 2 ) at 550°C for 3h.

TL;DR: A series of rare earth elements with different ionic radii (Gd, Sm and Nd) doped ceria solid solutions and pure ceria catalyst were rapidly prepared by citrate-complexation method as mentioned in this paper.