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Arrangement channel method

Figure 4 shows the dependence on final rotational state of the C1-hH2(v=0, j =0)—> HCl(v=0jO DCSs at two different coUision energies. We observe that the DCSs all have a very similar shape. Likely, this implies that the overaU shape of the DCS is determined by the reactive probabdity (opacity) as a function of impact parameter and by an overall deflection function (h), while the product final state distribution is governed by the shape of the PES in the exit region of the arrangement channels. We remark also that the determination of fully final-state resolved DCS does not present any particular difficulty for our time-independent method, but would not be feasible with some of the time-dependent methods which have been applied recently to the X-hH2 reactions. [7, 16]... [Pg.58]

Template-directed synthetic methods have been widely employed to create ordered mesoporous materials, in particular SiO and TiO. Mesoporous materials have unique features, for example, controllable pore size, high surface area, and regularly arranged channel systems [93]. [Pg.93]

One of the most frequently used micro reactor types relies on the use of micro-structured platelets with multiple parallel channels, typically manufactured by methods other than routinely used for chip processing, encased in a housing [3,4, 12, 13, 18, 28-39]. If more than one platelet is used, which is usually done to increase throughput, a stack-like arrangement is preferred for parallel feed. Such stacks are either welded directly from the outside [29, 30], are encompassed by a cover [3,18, 31, 32, 37-39], have end caps with fluidic connectors [12,13, 33] or are inserted into a recess of a housing, which is typically composed of two parts [4, 28, 34-36, 40 1]. [Pg.261]

These microporous crystalline materials possess a framework consisting of AIO4 and SiC>4 tetrahedra linked to each other by the oxygen atoms at the comer points of each tetrahedron. The tetrahedral connections lead to the formation of a three-dimensional structure having pores, channels, and cavities of uniform size and dimensions that are similar to those of small molecules. Depending on the arrangement of the tetrahedral connections, which is influenced by the method used for their preparation, several predictable structures may be obtained. The most commonly used zeolites for synthetic transformations include large-pore zeolites, such as zeolites X, Y, Beta, or mordenite, medium-pore zeolites, such as ZSM-5, and small-pore zeolites such as zeolite A (Table I). The latter, whose pore diameters are between 0.3... [Pg.31]


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See also in sourсe #XX -- [ Pg.381 ]




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