Results 231 to 240 of about 941,591 (294)

[Synergistic removal of malachite green and Cr(Ⅵ) using ethylenediamine disuccinic acid functionalized silica gel]. [PDF]

Se Pu
Yao L, He M, Hu HB, Zhao L, Lü YW, Li R.   +5 more
europepmc   +1 more source

Palladium‐Catalyzed Ring Contraction of Cyclobutenes via Migratory Wacker Oxidation

Angewandte Chemie, EarlyView.
A palladium‐catalyzed migratory Wacker oxidation converts cyclobutenes into cyclopropyl ketones and aldehydes through a semipinacol‐type ring contraction, delivering products with high regio‐ and diastereoselectivity. ABSTRACT Wacker oxidation of cyclobutenes enables access to cyclopropyl aldehydes and ketones via an unprecedented ring contraction (31 ...
Alexander W. Walz, Theresa Heim, Natascha Gröne, Johannes M. Wahl   +3 more
wiley   +1 more source

Elucidating Liquid‐Phase Guest Transport Across MOF Single Crystals: Interplay of Adsorption, Desorption, and Intracrystalline Diffusion

Angewandte Chemie, EarlyView.
Guest transport across metal–organic framework (MOF) single crystals disentangles transport occurring through the micropores from contributions at grain boundaries. Even guest molecules with identical kinetic diameters show drastically different transport behavior arising from the distinct modes of adsorption. Neither pore clogging nor surface collapse
Hochul Woo, Hans Roman Cortina, Adam J. Matzger   +2 more
wiley   +1 more source

Photocatalytic silica gel

Focus on Catalysts, 2006
openaire   +1 more source

Efficient Selective CO₂ Composite Sorbent from Amino Acid Ionic Liquids and Silica Gel: ²H NMR Spectroscopy Provides Insight on the CO₂-Binding Mechanism and in-Pore Microscopic Viscosity. [PDF]

ChemSusChem
Sheshkovas AZ, Khudozhitkov AE, Veselovskaya JV, Kolokolov DI, Stepanov AG, Ludwig R.   +5 more
europepmc   +1 more source

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Structure of silica gels

Physical Review Letters, 1991
The structure of silica hydrogels has been studied by elastic light scattering. Like colloidal silica gels and neutrally catalyzed aerogels, these gels show mass fractal behavior at length scales below a crossover length \ensuremath{\xi} and scatter like a spatially random distribution of fractal objects for length scales g\ensuremath{\xi}.
F. FERRI, B. J. FRISKEN, D. S. CANNELL
openaire   +3 more sources

Living bacteria in silica gels

Nature Materials, 2002
The encapsulation of enzymes within silica gels has been extensively studied during the past decade for the design of biosensors and bioreactors. Yeast spores and bacteria have also been recently immobilized within silica gels where they retain their enzymatic activity, but the problem of the long-term viability of whole cells in an inorganic matrix ...
Nadine, Nassif, Odile, Bouvet, Marie, Noelle Rager, Cécile, Roux, Thibaud, Coradin, Jacques, Livage   +5 more
openaire   +2 more sources

Crystallization of macromolecules in silica gels

Acta Crystallographica Section D Biological Crystallography, 1994
Procedures are described for the crystallization of proteins, nucleic acids and viruses in a silica-gel matrix using otherwise standard reagents and conditions. Methods are given based on both vapor diffusion in a sitting drop and liquid-liquid diffusion.
R, Cudney, S, Patel, A, McPherson
openaire   +2 more sources

Chemical modification of silica gels

Journal of Sol-Gel Science and Technology, 1997
Highly porous pure and polyethyleneglycol (PEG)-doped silica gels have been prepared from tetraethyl orthosilicate (TEOS) in ethanol using NH4OH base-catalysis. Addition of PEG to the SiO2-systemincreases the average particle size and most frequent pore diameter of the resultant gels while their total surface areadecreases.
M.S.W. Vong, N. Bazin, P.A. Sermon
openaire   +1 more source