Results 251 to 260 of about 205,983 (305)

Nanoparticles as Sacrificial Pore Fillers for the Fabrication of High-Permeability Polyelectrolyte Multilayer Membranes. [PDF]

ACS Appl Nano Mater
Andrade JR, Watt TR, Moazezi P, Te Brinke E, de Vos WM.   +4 more
europepmc   +1 more source

Sustainable synthesis of quinazolinones: exploring multicomponent reactions with a novel magnetic palladium catalyst. [PDF]

Front Chem
Liang X, Yang Z, Li B.
europepmc   +1 more source

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SiO2

2006
P. Villars, K. Cenzual, J. Daams, R. Gladyshevskii, O. Shcherban, V. Dubenskyy, N. Melnichenko-Koblyuk, O. Pavlyuk, S. Stoiko, L. Sysa   +9 more
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Trapping of BTX compounds by SiO2, Ag–SiO2, Cu–SiO2, and Fe–SiO2 porous substrates

Chemosphere, 2010
Adsorption isotherms of BTX aromatic hydrocarbons (benzene, toluene, and p-xylene) on pristine (SiO2) and metal-doped (Ag-SiO2, Cu-SiO2 and Fe-SiO2) mesoporous and microporous substrates were measured and interpreted. These adsorbents were synthesized by the sol-gel procedure and their BTX sorption isotherms were obtained by the gas chromatographic ...
M A, Hernández, M, Asomoza, F, Rojas, S, Solís, R, Portillo, M A, Salgado, C, Felipe, Y, Portillo, F, Hernández   +8 more
openaire   +2 more sources

Reduction processes in Cu/SiO2, Co/SiO2, and CuCo/SiO2 catalysts

Catalysis Today, 2012
Abstract Cu/SiO 2 , Co/SiO 2 , and bimetallic CuCo/SiO 2 catalysts have been synthesized and their reduction behavior characterized by TPR, in situ XRD, and in situ XANES. In Cu/SiO 2 , a two step reduction process, CuO → Cu 2 O → Cu 0 , occurred. Two forms of the intermediate Cu 2 O with different degrees of reducibility were observed. Addition
Miranda L. Smith, Andrew Campos, James J. Spivey   +2 more
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Preparation of (Ni–B)/SiO2, Ni/SiO2 and NiO/SiO2 nanocomposites

Journal of Non-Crystalline Solids, 2003
Abstract In this work we report composites of nickel–boron (Ni–B)/SiO 2 , Ni 3 B/SiO 2 , Ni/SiO 2 and NiO/SiO 2 . As precursor of the nickel compounds, we used nanometric amorphous Ni–B alloy particles. The nanometric Ni–B particles were prepared by aqueous chemical reduction and studied by transmission electron microscopy (TEM), differential ...
L. Narváez, O. Dominguéz, J.R. Martı́nez, F. Ruiz   +3 more
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The structure of CaO–SiO2 and PbO–SiO2 glasses

Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B, 2022
Whereas the cybotactic theory and thermodynamic modelling have proved invaluable tools in understanding the structures and properties of alkali silicate glasses, questions have been raised as to their validity for alkaline earth and related glasses such as PbO–SiO2.
Adrian C. Wright, Natalia M. Vedishcheva
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Monolithic aerogels in the systems SiO2B2O3, SiO2P2O5, SiO2B2O3P2O5

Journal of Non-Crystalline Solids, 1984
Abstract The gels in the binary and ternary systems: SiO 2 B 2 O 3 , SiO 2 P 2 O 5 , SiO 2 B 2 O 3 P 2 O 5 ; were prepared by hydrolysis and polydensation of metalorganic compounds. The gelling times vary with the molar percentage of SiO 2 . The solvent was evacuated under hypercritical conditions in an autoclave in order to obtain aerogels free
T. Woignier, J. Phalippou, J. Zarzycki
openaire   +1 more source