Abstract
The mechanism of cation replacement in the Li1-xHxAlO2; 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 {Mathematical expression} 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-xHxAlO2;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.
Original language | English |
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Pages (from-to) | 139-146 |
Number of pages | 8 |
Journal | Catalysis Letters |
Volume | 12 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - Mar 1992 |
Keywords
- Catalysis by LiHAlO
- reactions of 2-propanol on LiHAlO
- structure of LiHAlO catalyst
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Catalysis