Characterization of the acidic and basic properties of αLiAIO2, γLiAIO2, and calcined "HAIO2" using isopropyl alcohol

D. C. Tomczak, J. L. Allen, Kenneth R Poeppelmeier

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Characterization of both the acidic and basic sites of αLiAIO2, γLiAIO2, and calcined "HAIO2" was carried out with the isopropyl alcohol probe reaction. All three materials catalyzed the formation of both propylene and acetone. The formation of propylene is indicative of acidic-basic pair sites, while the presence of acetone is indicative of basic sites. In addition to the formation of both propylene and acetone, base-catalyzed acetone aldol condensation products were formed on both αLiAIO2 and calcined "HAIO2." Both materials produced a C6DIENE (2-methyl-1,3-pentadiene or 4-methyl-1,3-pentadiene) aldol condensation product, while αLiAIO2 also produced the aldol condensation products 4M2PONE (4-methyl-2-pentanone) and 4M2POL (4-methyl-2-pentanol). The reaction pathways that describe the formation of the various C6 products were used to infer the nature of the basic sites on the materials. Additional information obtained from TPD and FTIR of chemisorbed CO2 demonstrate that the basic sites on αLiAIO2 are similar in strength and number to MgO.

Original languageEnglish
Pages (from-to)155-165
Number of pages11
JournalJournal of Catalysis
Volume146
Issue number1
DOIs
Publication statusPublished - 1994

Fingerprint

isopropyl alcohol
2-Propanol
Acetone
acetone
Alcohols
propylene
Propylene
Condensation
condensation
products
pentanone
Temperature programmed desorption
probes
3-hydroxybutanal
1,3-pentadiene

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Characterization of the acidic and basic properties of αLiAIO2, γLiAIO2, and calcined "HAIO2" using isopropyl alcohol. / Tomczak, D. C.; Allen, J. L.; Poeppelmeier, Kenneth R.

In: Journal of Catalysis, Vol. 146, No. 1, 1994, p. 155-165.

Research output: Contribution to journalArticle

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