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A different variation in size for water adsorption is observed for the faujasite-type zeolites (Figure 5). These zeolites at first contract, reaching a limit of 0.3-0.45 % at 0 = 0.7-0.8, and then they expand. Except for zeolite CaY, their sizes, even at p/ps 0.85, remain below their initial values. The maximum contraction is observed for zeolite NaY, and the minimum for NaX. [Pg.409]

In the following material, sections taken from the original papers are presented in smaller type. Annotations are in the usual type size. For convenience, figures and tables are renumbered in sequence with those of this chapter. For access to references cited in excerpts, see the complete papers. Stereo illustrations of maps and models (not part of the papers) are derived from files kindly provided by Zhaohui Xu. I am indebted to Xu and to Leonard J. Banaszak for allowing me to use their work as an example and for supplying me with an almost complete reconstruction of this structure determination project. [Pg.170]

The optimum conditions needed to achieve the desired sulfur capture efficiency (90 percent) is dependent on sorbent type, coal type, and fluidized bed design. Representative conditions are a bed temperature of 1116 K, a sorbent particle of 1 mm, and a Ca/S ratio of about 3. The bed temperature selection is based on the admittedly shaky evidence that this is where the maximum sulfation peaks. The particle size selection is a compromise between a desire to use high gas velocities and the observed decrease in sulfation with increasing size (Figure 2). The Ca/S ratio corresponds to a maximum sulfation of about 0.3. For these conditions the mass feed rate of a limestone sorbent is 0.345 that of the coal feed and the flow rate of the partially sulfated spent sorbent is 0.285 the coal feed rate. [Pg.80]

Fig. 1.4a. The large range of type sizes in ChemText facilitates making slides, posters, and interesting figures. Both normal and bold are shown. Fig. 1.4a. The large range of type sizes in ChemText facilitates making slides, posters, and interesting figures. Both normal and bold are shown.
Type (2) PMMA is the dispersed phase and PS is the continuous phase. Almost all of the samples were of this type, and Figures 8, 9, 10, 11, and 12 illustrate the group, showing the phase behavior and particle sizes for the 10-wt % PMMA series. [Pg.384]

Organized according to framework size, skeleton type (see Figure 3), main group atom, and transition metal atom. [Pg.1756]

N2 adsorption in zeolites NaX and NaY is similar but higher than in the silicalite (S-1), which has a more dense structure (Table 2). In the case of the exchanged zeolites type Y (Figure 2), the amount of N2 adsorbed by the CaY sample is larger than for the NaY zeolite. The first material has half the amount of cations in comparison with NaY, but with similar size. Additionally, the increase in the size of the cation (Ca", Sr", Ba ) causes a decrease in the amount of N2 adsorbed. [Pg.487]

Jacket and Coil Type.—Figure 5 shows the construction of the first multiple-effect evaporator invented and patented by Pecqueur, and the heating surface consists simply of dished copper bottoms. The whole arrangement of the multiple effect is very simple, but naturally the capacity is small as such a construction is always limited in size. Figure 6 shows Howard s vacuum pan with jacket for the concentration of sugar juice. A similar pan was used by Roth for the same purpose. [Pg.369]

Over most canopies/urban areas, with horizontal scale Lc, as shown in Figure 2.1, there are considerable variations in the types, sizes and layout of obstacles, buildings and streets. Over larger canopies/urban areas there are usually also significant variations in the natural topography around the canopy and ground level within the canopy. [Pg.31]


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See also in sourсe #XX -- [ Pg.35 , Pg.353 , Pg.356 , Pg.357 , Pg.360 , Pg.365 ]




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