Particle size distributions, obtained from

Figure 7. Pt particles size distribution obtained from TEM on AI2O3 support with a TEM image of the catalyst. (The researchers wish to express their gratitude to DARPA for funding Grant N66001-02-1-8942.)...

Figure 13.2 Laser diffraction particle size distributions obtained from several lots of an API used in a low-dose formulation (API is unmilled).

This appendix reports the weights for the moments of the particle size distribution obtained from an eight order Taylor Series approximation to the scattering efficiency for the anomalous diffraction case... 

Figure 359. Comparison of typical particle size distributions obtained from spray drying (left) and fluidized bed agglomeration (right)...

In addition to particle size distribution obtained from the particle size analyzer, some photomicrographs were obtained to characterize further the nature of the suspensions. As can be seen in Figure 9, the precipitated dye solids are aggregates of small spherical shaped particles. The size of the individual particles making up the aggregates ranges from 0.01 to 0.3pm . 

Figure 7. Particle size distribution obtained from cross-sections of STM image.

Diffusion losses of aerosol nanoparticles due to internal surface area of filter housing units and associated tubing can be quantitated by comparing aerosol particle size distributions obtained from an aerosol that follows different paths within the reactor. As shown in Figure 6.29, the solid circle data is the particle... 

In small-scale suspension polymerization, inhibitors are often removed from the monomer before it is dispersed in the continuous phase. In large-scale operation, however, the inhibitor may not be removed. Its presence lowers the risk of premature polymerization, which can be dangerous when large amounts of monomer are being handled. Consequently, the particle size distribution obtained from the large reactor may differ from that in the small reactor because drop breakage can occur before significant amounts of polymer are formed (that is, when the drop viscosity is still relatively low). 

FIGURE 12.15 Particle size distribution obtained from the analysis of TEM micrographs for Vulcan XC72 supported catalysts. 

The resulting precision of particle size distributions obtained from different total numbers counted has been evaluated by Lines who showed that the average standard deviation of any point on a typical weight percentage size distribution was... 

When studying cyclone performance, or any issue in powder technology, it can be advantageous to fit models to the experimentally determined particle size distributions obtained from laboratory measurements. In this way the particle size distribution can be characterized using only two parameters the... 

The procedure to fabricate colloidal silver, (Ag°) , spherical nanoparticles is similar to that already described (see Section 9.3.3) The Cu( AOT)2 is replaced by the silver derivative. The relative concentration of Na(AOT), Ag(AOT)2, and the reducing agent remain the same. Control of the particle size is obtained from 2 nm to 6 nm (67). To stabilize the particles and to prevent their growth, 1 p.l/mL of pure dodecanethiol is added to the reverse micellar system containing the particles. This induces a selective reaction at the interface, with covalent attachment, between thio derivatives and silver atoms (68). The micellar solution is evaporated at 60°C, and a solid mixture of dodecanethiol-coated nanoparticles and surfactant is obtained. To remove the AOT and excess dodecanethiol surfactant, a large amount of ethanol is added and the particles are dried and dispersed in heptane. A slight size selection occurs, and the size distribution drops from 43% to 37%. The size distribution is reduced through the size selected precipitation (SSP) technique (38). 

With the methods discussed in Chapter 6.5. we are able to produce small polymer particles from solutions of polymers in compressed gases [52,53], First results indicate that, depending on the process conditions and the nozzle design, a wide variety of spherical particles, small fibrils, or longer fibres can be obtained. Sometimes the particle-size distribution obtained is very uniform, in other cases, a wide variety of sizes is obtained. In some cases, the monomer was used as solvent for the equivalent polymer. The particles, fibrils, etc., obtained may be used for direct spray-coating of surfaces but they also offer new opportunities as raw materials in their own right. New products are underway that are based on such technologies. 

Fig. 4.5 Metal particle size distributions obtained by HRTEM measurements of (A) Ru2oG40H, (B) RU40G4OH, (C) RusoGSOH, and (D) RuiooGSOH solution deposited on a carbon-coated copper grid. The representative HRTEM image is of RusoGSOH. Reprinted with permission from J. Phys. Chem. B 2006, 770, 1123-113 . Copyright 2006 American Chemical Society.

It would be clear that higher Li/Co ratio is suitable to produce dense material with higher bulk density and higher tap density (Fig. 2.18). Here, it should be noted that the particle size distribution obtained by the wet method is different from that by SEM photograph in some cases. The relations between the Li/Co ratio and the particle size distributions determined by the microtrack method (wet... 

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