Catalyst bauxite-based

Spectra of a spent bauxite-based desulfurization catalyst pellet ( 7 x 13 mm, examined in air) are shown in Fig. 9. The outside of the pellet was black and the single-beam spectrum S showed some of the continuum absorption found with chars. The compensated spectrum S/So, however, showed appreciable spectral structure. The broad band near 750 cm is probably due to the bauxite, and the absorptions near 3000, 1320 and 1000 cm-- - to a mixture of hydrocarbons and thio species formed during the reaction. The feature near 1640 cm l is probably caused by an olefinnic species. 

InTox A process for destroying toxic wastes in aqueous solution by oxidation with oxygen at high temperatures and pressures in a pipe reactor. No catalyst is required. The reactions take place at approximately 300°C and 120 atm. Developed by InTox Corporation, UK, based on a process for extracting aluminum from bauxite developed by Lurgi in the 1960s. See also Zimpro. 

Aluminum oxide (alumina), AI2O3, has lugh technological value. Sol-gel processing of alumina has created novel applications and improved some of its properties. Products such as catalyst earners, abrasives, fibers, films for electronic applications, aerogels, and membranes for molecular filtration have been developed based on sol-gel processing. See also Alumina Adsorption (Process) and Bauxite Aluminum and Aluminum Alloys and Engineered Materials. 

The effect of basicity on the following catalysts for Claus reaction was investigated Chromosorb-A cobalt-molybdate activated alumina bauxite and Porasil. The base loadings were 1-6 wt %. 

Catalytic desulfurization of straight-run naphthas with bauxite or fuller s earth was once widely used, and the comparison of octane numbers of Table 10-1 is based on such processes. Vaporized gasoline was passed through the catalyst at about 750 F, and the hydrogen sulfide produced from the decomposition of mercaptans, sulfide, and disulfides was frac tionated or washed from the product. 

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