Usually this is done by content of alkali metal oxides.① Alkali glass fiber, content of alkali metal oxide is higher than 12%; ② medium-alkali glass fibers, alkali metal oxide is in a range of 6% ~12%; ③ low-alkali glass fiber, alkali metal oxide is in a range of 2% to 6%;...
Forming a metal oxide by treating an acidic solution containing a metal to yield a precursor in the form of a semi-liquid, semi-solid or solid, and treating the precursor to yield a product including the metal oxide. An organic or inorganic component may be combined with the precursor to ...
In particular, the metal oxides solubility in molecular solvents required highly acidic or basic conditions [22,39]. Former, ILs are proposed as promising solvents for dissolving metal oxides but these are toxic and expensive which drastically reduced their utilization on large-scale [39]. Several ...
adsorption species. Nevertheless, the concept of the self-assembly of metal oxides having acid–base sites and an organic modifier having two functional groups with different basicities or acidities, provides an effective strategy for preparing metal oxide materials that have enhanced catalytic properties...
Methods and compositions for removing metal oxides The invention relates to methods and compositions for removing metal oxide soils from surfaces. The compositions include an anionic surfactant and a pH adjuster at an acidic pH. In one embodiment, the invention relates to a method of rem... ND ...
Several acidic and basic oxide promoted Cr/ SiO 2 catalysts were prepared and investigated in oxidative dehydrogenation of ethane in the presence of carbo... S Wang,K Murata,T Hayakawa,... - 《Catalysis Letters》 被引量: 70发表: 2001年 ChemInform Abstract: Critical Performance Evaluation of Ca...
or may be generated in situ on the solid support. The supported catalyst may be prepolymerized. In addition third components can be added in any stage of the preparation of the supported catalyst. Third components can be defined as compounds containing Lewis acidic or basic functionalities exemplif...
since then the solvent does not compete with the substrate surface to form molecular interactions with the polymer. When the deposition occurs from more basic or acidic solvents, less polymer will be deposited due to a competing effect. In Fig.2, the amount of PMMA deposited on the surface of...
The breakdown caused by the acidic tumor milieu permits the nanocarrier to escape the lysosomal destruction and expose the active substance. Alternatively, premature degeneration of the coating may transform the inert NP into a toxic agent by promoting immunogenicity or inflammation from its unprotected ...
Chemical stability refers to MOFs’ durability under various chemical conditions, including moisture, solvents, acidic, basic, or aqueous solutions containing coordinating anions. On the other hand, thermal and mechanical stability refers to MOFs' capacity to maintain structural integrity when exposed to ...