Highly active, acidic sulfactive metal hydrogenation catalysts comprising Mo and/or W plus Ni and/or Co are prepared by methods comprising as the essential novel feature impregnating gamma alumina particles with an aqueous solution havin... GA Mickelson - US 被引量: 7发表: 1980年 Hydrodenitrogen...
While the sodium phase showed little to no preference for Cs + in highly acidic or basic solutions containing large concentrations of NaNO 3 , the potassium phase yielded a Sr 2+ K d of around 7100 ml g 1 in 2.5 M NaNO 3 /l M NaOH solutions, and a K d of 3500 ml g 1 for a...
This work presents the synthesis of SiO2/Nb2O5and SiO2/ZnS heterostructures using the microwave-assisted hydrothermal (MAH) method, which is fast and has low temperature. The silica used in the synthesis was obtained by burning the rice husk without any pre- or post-treatments. The obtained s...
To find the number of basic fluxes from the given compounds: SiO₂, MgO, CaO, FeO, B₂O₃, and CaCO₃, we will analyze each compound based on its chemical behavior.1. Identify Basic Fluxes: Basic fluxes are typically me
Iron nanoparticles tuned to catalyze CO2 electroreduction in acidic solutions through chemical microenvironment engineering ACS Catal. (2022) S. Yan et al. Electron localization and lattice strain induced by surface lithium doping enable ampere-level electrosynthesis of formate from CO2 Angew. Chem. Int...
Industrially, SiO2 NPs are produced as precipitated silica from sodium silicate solution in an acidic medium and as fumed (or pyrogenic) silica from quartz sand or SiCl4 put in a flame. For example, Rhodia uses Fontainebleau quartz sand first mixed with Na2CO3 and heated at 900 °C. The ...
In order to find a nonvolatile acidic agent, we used COOH functionalized silica beads instead of acetic acid. To prove the efficiency, the (ep)oxidation reactions were performed with several metal complexes based on BPMEN ligands. Although those metal complexes are not the most efficient for oxy...
) termed as (Eu-SMZL) thin films have been synthesized by highly acidic sol–gel technique and calcined at 450 °C for 2 h. The nano-porous Eu-SMZL films showed the improved structure and morphology with increasing Eu2O3 content. The XRD and FTIR investigation proved an increase in the ...
In aqueous phase the presence of SiO_2 increased the rate of degradation of Methylene Blue in comparison with pure TiO_2 in acidic conditions, whereas Acid Orange 7 photodegradation was faster in basic solution in the presence of TiO_2/SiO_2 1:1 composite. In gaseous phase, composites ...
To identify material composition and understand how the resin was built from basic siloxy groups, the ESI-FTMS spectra of A and B were acquired. Figure 1 shows the ESI-FTMS spectrum of A (MVi0.20TPh0.40Q0.40, Mw: 3589 g/mol; Mn: 1737 g/mol) synthesized under slightly acidic condensation...