Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

REPORT procedure creating tables

This preparation procedure also creates solid-state phases that are key to the performance of the Mo-V-Nb-Te-0 catalyst for propane ammoxidation. High activity and selectivity result when the x-ray powder diffraction pattern shows the presence of specific diffraction lines attributed to two separate phases denoted as Ml and M2 by Mitsubishi Chemical Corp. The diffraction lines assigned to these two phases are given in Table 7 (146). The coexistence of these two phases is viewed as key to the successful functioning of the catalyst. Specifically, the Ml phase is purportedly responsible for the oxidative dehydrogenation of propane to propylene, the key intermediate in the reaction network. This reaction sequence, in which the first step is the formation of a propylene intermediate, is the same as noted previously with other propane ammoxidation catalysts, most notably with the V-Sb-0 catalyst (see above). The M2 phase of the Mo-V-Nb-Te-0 catalyst is reportedly the center for the selective ammoxidation of the propylene intermediate to acrylonitrile. As the first-formed intermediate, propylene is apparently the source of all the observed reaction products. Although a detailed kinetic analysis has not been presented, a cursory report, published in Japan, summarized the kinetic experiments for the conversion of propane and propylene over a... [Pg.289]

When menu selection is complete, the user s query is translated into extended SQL statements which are then passed to the ADT shell for execution. In translating the query the assumption is made that tables will be joined via the special join operation described above and that a compound must pass all specified search conditions to qualify for retrieval. This simple interface allows users to create most reports for themselves without assistance. A consultant s help is available for producing special reports that require complex SQL commands and/ or command procedures. [Pg.267]


See other pages where REPORT procedure creating tables is mentioned: [Pg.161]    [Pg.138]    [Pg.145]    [Pg.244]    [Pg.684]    [Pg.78]    [Pg.246]    [Pg.364]    [Pg.183]   
See also in sourсe #XX -- [ Pg.132 , Pg.133 , Pg.134 , Pg.135 , Pg.136 ]




SEARCH



Create

Create table

Creating

Tables, creating

© 2024 chempedia.info