Aluminum modified

Shin R-W, Lee VM-Y, Trojanowsky JQ (1994) Aluminum modifies the properties of AD PHFtau proteins in vivo and in vitro. J Neurosci 14 7221-7233... 

Figure 5.13 V static and MAS NMR spectra ofVjOj, V0,/Si02 and VO, supported on aluminum-modified Si02 (Sio.8Alo.2O2). Adapted from ref [97].

Tsai, M.S. and Wu, W.C., Aluminum modified colloidal silica via sodium silicate. Mater. Lett., 58, 1881, 2004. 

Figure 13. Sodium- and ammonium-stabilized and aluminum-modified surfaces of colloidal silicas.

The industrial development of silica sol manufacturing methods is reviewed. Primary attention is focused on the preparation of monodispersed sols from water glass by the ion-exchange method. Details are given for variations of manufacturing process and for the characteristics of both the processes and sols obtained. Furthermore, the following surface modifications of particles are demonstrated silica sols stabilized with ammonia, amine, and quaternary ammonium hydroxide aluminum-modified or cation-coated silica sol and lithium silicate. Finally, future trends in silica sol manufacturing are discussed from the viewpoint of not only raw materials and improvement of the procedures but also the function of the silica sols and their particle shape. 

Alkali metal hydroxides, dissolution rate effect, 521-523f Alkoxides, formation of uniform precipitates, 451-464 Aluminum, silicic acid effect on adsorption in food, 612/ 613 Aluminum in biological systems, 604, 605f, 606 Aluminum-modified silica sol, formation, 62, 63/ Aluminum-silicon interactions in biology,... 

Figure 10. Corrosion of aluminum-modified Type 304 SS for 28 days in steam contg. 30 ppm 0 at 650°C (8)...

Aluminum-modified sols, compared with unmodified sols of the same specific surface area, as additives in concrete mixture containing polycarboxylates as superplasticizers achieved not only increased workability time but also improved strength. Greenwood et al. [17]. 

In a series of patent applications [28-31] Davies et al. show that the problems caused by high amounts of alkali metal ions could be overcome by using silica sols as the water-based binder instead of solutions of alkah silicates. The preferred sols had a particle size between 5 and 10 nm and a Si02/Na20 mole ratio of about 50 1. They also found that they could increase the pot life of the shop primer by using aluminum-modified silica sols. 

Aluminum-modified silica sol with a particle size of 12 nm in a pigmented ink-jet ink formulation gave a print with improved optical density and superior rub resistance compared with a reference ink [48]. 

Chem. Descrip. Aluminum-modified zinc phosphate CAS 7779-90-0 EINECS/ELINCS 231-143-9 Uses Corrosion inhibitor, pigment for coatings Features Replacement for zinc chromate, lead oxide, strontium chromate, barium chromate, etc. 

Oleoresinous phenolic varnishes are excellent coatings that dry in 2-4 h and show exterior durability, corrosion resistance (especially when aluminum-modified), compatibility, solubility, and good package stability. Recoatability and intercoat adhesion are also excellent. The films are sensitive, however, to strong solvents and concentrated acids and alkalies. Unlike systems containing cross-linking phenolics, films containing these resins remain flexible. 

Berger, F., Weimnann, M., Aldinger, F., and Miiller, K. Solid-state NMR studies of the preparation of Si-Al-C-N ceramics from aluminum-modified polysilazanes and polysUylcarhodiimides. ChertL at. 2004 16 919-929. 

It is worth pointing ont here that the manifestations of internal stresses in single-phase crystalline materials (such as MgO, CaO, and gypsum) do not in any way limit their variety in more complex structures, for example, in snch two-phase materials as amorphous silica or aluminum-modified silica filled with various crystals, or in even more complex materials, such as cement compositions. 

To improve the compatibility between SNPs and hydrophilic polymers, modification of SNPs was performed before mixing with the polymers or monomers (Yang et al., 2013b). Aluminum-modified colloidal sihca was used to prepare polyacrylamide (PAM)/silica NC gels with enhanced mechanical performance by in situ polymerization of AM in the presence of aluminum-modified silica. The hydrogel showed up to 15 times in compression stress compared with PAM hydrogel because... 

Silica/chromia catalysts have also been modified by the incorporation of other oxides such as alumina" or zirconia," by impregnating a silica support with zirconium acetylacetonate or aluminum sec-butoxide or co-gelling the silica gel with appropriate soluble salts. Zirconia-modified catalysts are similar to those with added titanium in their effect but have not been widely reported. Aluminum-modified catalysts have increased activity and provide lower-molecular-weight polymers, but the procedure for their preparation is complicated. Neither type of catalyst is widely described in the literature but they are reported as containing different active sites." ... 

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