Synergistic effects between active metal species and carriers show vital importance to redox catalysts. For this study, a successful synthetic strategy is obtained from hybrid materials involving the combination of phosphomolybdic acid (PMA) and Zr-MOF. The electronic structures of the PMA/UiO-6...

Three nanocomposites of phosphomolybdic acid supported on TiO2and ZnO nanoparticles were synthesized and characterized by means of FESEM, FTIR and XRD analysis. Photocatalytic activity of the synthesized nanocomposite was investigated for aniline as an organic pollutant model. Relatively, good d...

An ecofriendly solid acid catalyst was synthesized by impregnating phosphomolybdic acid on zirconia followed by doping with Silver nanoparticles to form composite. We report here, the synthesis, characterization and photocatalytic behavior of AgNPs doped Keggin Ions/ Zirconia which is synthesize...

Microsphere-structured polypyrrole (PPy) induced and doped by phosphomolybdic acid with high redox activity is synthesized by a facile in situ polymerization method. The diameter of the microsphere can be controlled in the range of 100˜120 nm by the introduction of p-toluene sulfonic acid (TSA),...

Copper chromite (CuCr2O4) catalysts were prepared by ceramic and coprecipitation methods and characterized by X-ray diffraction, scanning electron microscopy (SEM), elemental, differential calorimetric (DSC), thermogravimetric and granulometric analysis, mass spectroscopy and infrared spectrosco...

Deactivation mechanisms of copper chromite (CuCr2O4⋅CuO) catalyst for vapor-phase selective hydrogenation for furfuryl alcohol have been investigated using ex situ and in situ X-ray absorption fine structure (XAFS), X-ray photon spectroscopy (XPS), and Auger Electron Spectroscopy (AES). At 200 °...

Various copper chromite catalysts with and without promoters were prepared by simultaneous co-precipitation and digestion technique and the role of promoters (Al, Ba and Zn) was investigated for hydrogenolysis of glycerol to 1,2-propylene glycol (1,2-PG) in both batch and continuous operations. ...

In the recent years, the interest in the ethanol production from renewable natural sources, as a possible alternative energy vector, has strongly grown in the world. The low-cost ethanol availability has also favored the study of the production of different chemicals such as ethylene, ethyl ethe...

TiO2 atomic layer deposition (ALD) overcoatings were applied to copper chromite catalysts to increase the stability for 2-furfuraldehyde (“furfural”) hydrogenation. After overcoating, about 75% activity was preserved compared to neat copper chromite: much higher activity than an alumina-ALD-ov...

Refractory wear in furnaces is a key cost driver in pyrometallurgical processes, leading to periodical relining that involves maintenance and increased operational costs. One of the main factors in refractory wear is the chemical attack by the molten phases from the bath. This chemical interacti...

The catalytic generation by ethanol decomposition and partial oxidation over copper-chromite and copper-zinc catalyst supported on alumina has been investigated. The catalysts have been prepared by the method of combustion synthesis, characterized by a fast heating rate and a short reaction time...

A novel copper chromite based burning rate catalyst for composite solid propellants was synthesized by the thermal decomposition of basic copper ethylamine chromate. Thermal decomposition of the precursor to copper chromite was followed by TG–DSC techniques and the volatile products formed were...

Iron oxide and copper chromite are the known burn rate enhancers used in a composite solid propellant. Lot of research has been carried out to understand the mechanism or location of action of the burn rate modifiers so as to better tailor the burning rate of a composite propellant. The literatu...

The present study deals with the production of monodispersed copper chromite nanoparticles in a continuous flow micro channel reactor. The precursors used were aqueous solutions of copper nitrate and chromium nitrate. A mixture of the precursor at a fixed copper to chromium metal ion ratio and c...

Hexavalent chromium is highly toxic and elaborate technology is necessary for ensured removal during drinking water production. The present study aimed at estimating the potential of a micro-sized iron hydroxide (μGFH] adsorbent for chromate removal in competition to ions presents in drinking w...

The structure of bis(2-phenylethylammonium) chromate (VI) (2phCr) was determined from X-ray diffraction data. The compound crystallizes in the monoclinic system (space group C2/c) with the lattice parameters: a = 38.136 (2) Å, b = 11.2334 (6) Å, c = 8.1643 (4) Å; β = 98.480 (2) V = 3459.3 (3) Å...

Implant and medical device infection is a significant and potentially deadly problem in biomaterials today. In order to mitigate this issue vancomycin was either adsorbed or covalently attached to the calcium aluminum oxide surface and tested for antibacterial activity. Covalent attachment was a...

For the long-term stable operation of the entrained flow gasifier in the coal chemical industry, the flux agents are generally adopted to adjust the fusibility of coal ash. Therefore, it is necessary to understand the underlying mechanism for the impact of typical oxide flux agents on viscosity ...

In this study, inhibited effect of graphene oxide (GO) on calcium leaching of cement pastes exposed to deionized water for 14 and 28 days was investigated using combined advanced techniques of ICP–MS, XRD, TGA, MIP, and SEM. After leaching for 28 days, mass loss of calcium hydroxide decreased f...

The present study aims to determine the influence of aluminum and calcium availability from two different aluminosilicate sources (COx argillite and sediment), thermally treated at 750 °C, on the formation, the structure and the working properties of the resulting alkali-activated materials. De...