• ###### polymers
• Because the main method of characterization of coordination polymers is X-ray crystallography, growing a crystal of sufficient size and quality is important. (wikipedia.org)
• ###### distribution
• The coordination number and coordination geometry of a metal center is determined by the nonuniform distribution of electron density around it, and in general the coordination number increases with cation size. (wikipedia.org)
• ###### physisorption
• Micromeritics 3Flex Surface Characterization Analyzer is a fully automated, three-station instrument capable of high-performance physisorption (mesopore and micropore) analysis. (empa.ch)
• ###### molecular
• The Brunauer-Emmett-Teller (BET) method cannot be used to provide a reliable evaluation of the surface area if the solid contains pores of molecular dimensions (i.e. narrow micropores). (springer.com)
• Therefore, the volume measured considering the finest scale of surface roughness will depend on the atomic or molecular size of the gas. (wikipedia.org)
• ###### inherent
• The inherent null surface tension of supercritical fluids avoids the pore collapse phenomenon in the gel structure during solvent elimination. (empa.ch)
• Δ P = 2 H γ {\displaystyle \ \Delta P=2H\gamma } In the Kelvin equation, the saturation vapor pressure, surface tension, and molar volume are all inherent properties of the species at equilibrium and are considered constants with respect to the system. (wikipedia.org)
• ###### determine
• The shape and size of the compound (eluent) determine how the compound interacts with the gel (stationary phase). (wikipedia.org)
• ###### occur
• Unsaturated conditions occur above the water table where the pressure head is negative (absolute pressure can never be negative, but gauge pressure can) and the water that incompletely fills the pores of the aquifer material is under suction. (wikipedia.org)
• ###### different
• The sample cell volume can be at different types and size, like G-DenPyc 2900 technology specified, the volume can be 0.1ml up to 500ml. (wikipedia.org)
• ###### narrow
• With size exclusion chromatography, there are short and well-defined separation times and narrow bands, which lead to good sensitivity. (wikipedia.org)
• ###### method
• Because the main method of characterization of coordination polymers is X-ray crystallography, growing a crystal of sufficient size and quality is important. (wikipedia.org)
• ###### usually
• Aerogels are usually obtained from wet gels by using the supercritical drying technology, able to avoid the pore collapse phenomenon in order to keep intact the porous texture of the wet material. (empa.ch)
• ###### areas
• The texture is influenced by the composition of the initial glass, which directs size and type of decomposition areas. (wikipedia.org)
• ###### sample
• The sample size used is 65 mm x 65 mm and 12-13mm in thickness. (empa.ch)
• ###### pressure
• This pressure drop ( Δ P {\displaystyle \scriptstyle \Delta P} ) is due solely to the liquid/vapor surface tension and curvature of the meniscus, as described in the Young-Laplace equation. (wikipedia.org)