IR-spectroscopic investigation of the acid properties of the surface of zirconium oxide modified by sulfate ions

Journal Article · Thu Dec 01 00:00:00 EST 1988 · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:6089906

Komarov, V S; Sinilo, M F

The methods of IR spectroscopic and gravimetric measurements of the adsorption of pyridine and ammonia were used to study the acid properties of zirconium oxide, modified by sulfate ions. It was shown that the total acidity and the ratio of the numbers of Lewis and Broensted acid centers depend on the content of sulfate ions and the temperature of vacuum conditioning of the samples. It was established that the function of Broensted centers is performed by hydroxyl groups. It was shown that pyridine and ammonia molecules, chemisorbed on acid centers, are additionally coordinated by SO/sub 4//sup 2/minus// anions.

• Research Organization: Institute of General and Inorganic Chemistry, Minsk (USSR)
• OSTI ID: 6089906
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Vol. 29:3; Other Information: Translated from Kinet. Katal.; 29: No. 3, 701-705(May-Jun 1988)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
INFRARED SPECTRA
ZIRCONIUM OXIDES
CATALYTIC EFFECTS
ADSORPTION
AMMONIA
BROENSTED ACIDS
CHEMISORPTION
GRAVIMETRIC ANALYSIS
HETEROGENEOUS CATALYSIS
LEWIS ACIDS
PH VALUE
PYRIDINE
QUANTITY RATIO
SORPTIVE PROPERTIES
SULFATES
SURFACE TREATMENTS
AZINES
CATALYSIS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYRIDINES
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SORPTION
SPECTRA
SULFUR COMPOUNDS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
400201* - Chemical & Physicochemical Properties