In catalytic reactions, such materials either make use of acidic or basic surface sites or act as supports for reduced metal nanoparticles, single-atom catalysts or surface organometallic chemistry (SOMC) species, rather than forming metal–carbon bonds themselves. In principle, in situ conversion ...
The presence of stuck particles in the experimental data gives rise to small ‘dimer’ peaks at interparticle separations 2R in the measured g(r) which cannot be entirely eliminated (indicated as ‘d.p.’ in Figs. 2b, 3c and 5c). In experiments on mixtures of SiO2 and COOH particles (...
This work reports on recently investigated structural and magnetic properties of three FexOy–SiO2 nanocomposites prepared by the alkoxide route of the sol–gel method. Depending on the presence or absence of catalyst and on its nature (acidic or basic), important differences among the samples have...
Although Aza-CMP-Co catalysts exhibited good performance under near-neutral conditions compared with other reported systems, significant performance loss in terms of overpotential, onset potential, Tafel slopes and TOFs occurred when the alkaline electrolyte was exchanged for a mildly basic example. ...
Qiang Liu and Jeroen A. van Bokhoven Water structures on acidic zeolites and their roles in catalysis. Chem. Soc. Rev. 2024DOI: 10.1039/D3CS00404Jhttps://doi.org/10.1039/D3CS00404J 5. Nature Commun.:使用带有冷冻凝胶覆盖层的光电极实现稳定的水分解 ...
Effects of the nature of the aluminum source on the acidic properties of some mesostruc- tured materials. Micropor Mesopor Mater., 1998, 26(1/2/3): 193-213.Occelli ML, Biz S, Auroux A, Ray GJ (1998) Effects of the nature of the aluminum source on the acidic properties of some ...
In comparison, the undoped sample MT, which does not involve any B–OH− redox reaction, has very similar Cvol in both basic (1 M KOH) and acidic electrolytes (1 M H2SO4, Supplementary Fig. 22). These data lend further support to the proposed B–OH− redox reaction that ...
of branched olefins. This distribution is consistent with the non-acidic nature of the inert SiO2support. The product distributions on each catalyst are consistent with a Schulz Flory distribution, which is determined by the ratio of the rate of olefin insertion, or propagation (α), to β-...
10), Fe single atoms in the Fe/CDs@PPSNs exhibit high stability, and no leaching of ferrous or ferric ions can be detected even incubated in a mild acidic environment for 3 days (Fig. 3h, i) due to the strong binding ability of Fe-N bonds in the pore channels. It is known that ...
To explore the origin of high selectivity of propylene in propane activation, DFT calculations were carried out to explore reaction pathways toward propylene and other minor product formations on Cu surface in acidic environment. Both kinetics and thermodynamics were considered. Cu2O was selected as the...