Ion-exchanged ultrastable Y zeolites--2. Alkaline earth-exchanged zeolites

Journal Article · Fri Oct 13 00:00:00 EDT 1978 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(78)90088-X· OSTI ID:6922902

Scherzer, J; Bass, J L

Ultrastable Y zeolite was exchanged with magnesium, calcium, strontium, or barium nitrate at pH 2.5-4.3 and characterized by IR spectroscopy, pyridine adsorption, and other techniques. The results showed that the metal cations exchanged at pH Vertical Bar3: 4 predominantly exchanged for zeolitic protons and that at lower pH the exchange decreased owing to competition for exchange sites by hydronium ions; that the crystallinity and thermal stability of the exchanged zeolites was high and decreased with increasing cation radius; and that the zeolites contained both Broensted and Lewis acid sites. The effect of steaming on the zeolites is discussed.

• Research Organization: W. R. Grace and Co.
• OSTI ID: 6922902
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 54:3; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ADSORPTION
ALKALINE EARTH METAL COMPOUNDS
AZINES
BARIUM COMPOUNDS
BARIUM NITRATES
BROENSTED ACIDS
CALCIUM COMPOUNDS
CALCIUM NITRATES
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INORGANIC ION EXCHANGERS
ION EXCHANGE
ION EXCHANGE MATERIALS
LEWIS ACIDS
MAGNESIUM COMPOUNDS
MAGNESIUM NITRATES
MATERIALS
MEASURING METHODS
MINERALS
NITRATES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
PHYSICAL PROPERTIES
PYRIDINE
PYRIDINES
SORPTION
SORPTIVE PROPERTIES
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM NITRATES
STRUCTURAL CHEMICAL ANALYSIS
SURFACE PROPERTIES
ZEOLITES