ISSN:
1572-879X
Keywords:
Catalysis by Li1−x HAlO2
;
structure of Li1−x HAlO2 catalyst
;
reactions of 2-propanol on Li1−x HAlO2
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The mechanism of cation replacement in the Li1−x H x AlO2; 0.00 ⩽x ⩽ 0.90 system was investigated with XRD. Examination of the peak position and intensity associated with the 018 and 110 Bragg reflections $$(R\bar 3m)$$ in a series of partially replaced samples showed that the cation replacement process proceeded by a two phase mechanism. Catalytic characterization of αLiAlO2 with the 2-propanol probe reaction revealed the formation of the condensation products methyl-cyclopentene, 4-methyl-2-pentanone, and 4-methyl-2-pentanol. These products were seen in addition to propylene and acetone. Catalytic characterization of Li1−x H x AlO2;x = 0.90 with 2-propanol showed a significant decrease in condensation activity and no change in the propylene/acetone ratio relative to αLiAlO2. This suggests that the decrease in the amount of lithium eliminated the basic sites necessary for the condensation reactions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00767196
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