Showing papers in "Journal of Catalysis in 2016"

TL;DR: In this paper, two series of Pd/ZnO catalysts were used to investigate structure activity relationships for direct CO2 hydrogenation and the results illustrate the importance of controlling the PdZn particle size and its surface structure for the catalysts to achieve high methanol selectivity.

TL;DR: In this paper, three model ceria catalysts were synthesized and analyzed with isothermal soot oxidation, H2-TPR, and Raman spectroscopy, and the results suggest that the initial activity of the catalyst is determined by the number of catalyst-soot contact points rather than the catalyst surface area.

TL;DR: In this paper, the state of the art in CO 2 conversion and a perspective on the potential of such technology is given. But, as stated in the paper, "each atom of C we can recycle is an atom of fossil carbon left in the underground for next generations that will not reach the atmosphere today" and "the need to reduce the emission of carbon dioxide into the atmosphere is pushing toward the use of renewable carbon".

TL;DR: In this paper, Ni catalysts supported on various metal oxides were fabricated and their catalytic activity for CO2 methanation was evaluated and it was shown that the CO2 conversion for most of catalysts drastically increased at 225-250°C and reached a maximal value at 300-350°C.

TL;DR: A series of manganese confined titania nanotubes (Mn/TNT) prepared by alkaline hydrothermal synthesis technique and were investigated for the Selective Catalytic Reduction (SCR) of NO x with NH 3 in the presence of excess (10−vol%) oxygen.

TL;DR: In this article, the authors combined density functional theory (DFT), kinetic Monte Carlo (KMC) simulations and experimental measurements to gain insight into the mechanisms of CO2 conversion by hydrogen on the Pt nanoparticle (NP).

TL;DR: In this article, a porphyrin-based porous organic polymer (POP-TPP) was synthesized from free-radical polymerization of tetrastyrylporphyrin monomer under solvothermal conditions.

TL;DR: In this article, infrared spectroscopy or temperature programmed desorption (TPD) was used to quantify framework Lewis acid sites in zeolite Beta (Sn-Beta) with four Lewis base titrants (pyridine, deuterated acetonitrile, n-propylamine, ammonia).

TL;DR: In this article, gas-diffusion electrodes are prepared with commercial Cu2O and ZnO mixtures deposited onto carbon papers and evaluated for the continuous CO2 gas phase electroreduction in a filter-press electrochemical cell.

TL;DR: In this article, the catalytic properties of Fe 2 O 3 to metallic Fe, followed by carburization of the metallic species, were investigated in the absence of an added oxidant.

TL;DR: In this article, a periodic density functional theory study complemented by ab initio thermodynamic analysis was carried out to identify the active sites and mechanism of selective oxidation of methane to methanol in Cu/ZSM-5 catalysts.

TL;DR: In this article, highly dispersed CeO2/TiO2 and bare TiO2 catalysts were fabricated and their structural, surface, and optical properties and activity for CO2 photoreduction were explored.

TL;DR: A series of Cu/ZnO catalysts (Cu:Zn molar ratio = 0.2-6.0), prepared by coprecipitation and subsequent calcination and reduction, has been characterized and evaluated in the gas-phase hydrogenation of furfural (FUR) as discussed by the authors.

TL;DR: In this paper, a 3D printed Cu/Al2O3 catalytic system with a woodpile porous structure is synthesized by 3D printing and then sintered at high temperature to generate a copper-supported rigid structure with high mechanical strength, a high surface-to-volume ratio, and controlled porosity.

TL;DR: In this article, the Co@C nanoparticles with surface CoOx patches covered by thin layered carbon (Co@C) have been directly synthesized by thermal decomposition of Co-EDTA complex.

TL;DR: In this article, the use of ionic liquids (ILs) as organocatalysts for the cycloaddition of CO2 to epoxides is analysed, and examples of one-pot processes starting from alkenes or diols that may be used to produce carbonates are described.

TL;DR: In this article, a new visible light photocatalysis mechanism was proposed for the enhanced performance of Bi@BiOCl with plasmonic Bi metal, exposed facets, and oxygen defects.

TL;DR: In this article, the authors investigated CO2 methanation on 5% and 0.5% Ru/Al2O3 catalysts by steady-state kinetic measurements and transient DRIFTS-MS.

TL;DR: In this article, the Ni2P/SiO2 catalysts were used for direct upgrading of an actual pyrolysis bio-oil derived from cedar chips, and the deoxygenation activity of the nickel phosphide catalysts was higher than that of conventional catalysts such as Ni, SiO2, Pd/C and an FCC-catalyst.

TL;DR: In this article, a comparative mechanistic study of the dry reforming reaction network at 700°C is provided for Ni, Pd and Pt surfaces by using density functional theory (DFT).

TL;DR: In this article, a series of mesoporous Fe x Ce 1− x O 2− δ catalysts with high surface area were prepared by a surfactant-assisted method.

TL;DR: In this article, the formation mechanisms of extra-framework Al species (EFAL) Al(OH)3H2O during dealumination were determined by using periodic density functional theory (DFT) calculations including dispersion corrections and free energy estimation.

TL;DR: In this paper, a new efficient visible-light-driven composite photocatalyst comprising SnS 2 nanoflakes and conjugated polymer (CPVC) from the dehydrochlorination of polyvinyl chloride (PVC) was developed.

TL;DR: In this paper, the effect of Ga3+ incorporation is attributed to the formation of Ga-containing spinel structure, which creates electronic heterojunction with excess ZnO phase to account for the facilitated reduction of Zn2+ to Zn0 to form CuZn when in contact with Cu nanoparticle.

TL;DR: In this paper, a combined experimental and computational study was conducted to reveal the kinetics of tandem glucose isomerization and fructose dehydration to 5-hydroxymethylfurfural (HMF) over a bifunctional zeolite H-BEA-25 in water.

TL;DR: In this paper, transition metal (Fe, Co, Ni, and Cu)-doped α-MnO2 nanowires were synthesized by a one-step hydrothermal method as CO oxidation catalysts.

TL;DR: In this paper, the authors investigated catalytic hydrogenation of CO2 to methane over Ru/rutile TiO2, focusing on the influence of the pretreatment temperature on the activity.

TL;DR: In this article, the structural dependence and reaction mechanism of CO oxidation over 3D-ordered macroporous (3D-CeO2)-based catalysts was investigated.

TL;DR: In this article, three-dimensional ordered macroporous CeO 2 and its supported Pd@Co nanocatalysts were prepared using polymethyl methacrylate-templating and modified polyvinyl alcohol-protected reduction methods, respectively.

TL;DR: In this article, the authors explore bifunctional catalysts using Au-Cd-based alloys inspired by theoretical modelling and find that the catalytic performance is most consistent with Au-terminated step surface on a bulk alloy, possibly formed through adsorbate-induced restructuring.