Characterization of the Li1-xHxAlO2 system; 0.00 ≤x ≤ 0.90

D. C. Tomczak*, S. H. Thong, K. R. Poeppelmeier

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

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 languageEnglish (US)
Pages (from-to)139-146
Number of pages8
JournalCatalysis Letters
Volume12
Issue number1-3
DOIs
StatePublished - Mar 1 1992

Keywords

  • Catalysis by LiHAlO
  • reactions of 2-propanol on LiHAlO
  • structure of LiHAlO catalyst

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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