Published March 1982
| Version v1
Journal article
Thermal stability and surface acidity of zeolite X enriched by La3+ and Pr3+ cations
Description
Exchange of zeolite X with La3+ and Pr3+ has been studied. Almost complete exchange (98.6% La and 99.4% Pr) is possible by repeated exchange at 100deg C with activation in between. Thermal stability and surface acidity increase with the degree of exchange. PrX shows higher surface acidity and better thermal stability than LaX. These observations have been explained taking into consideration the charge densities, ionic sizes, electronic configurations, electronegativities and oxidation states of the exchanging cations. (author)
Additional details
Publishing Information
- Journal Title
- Indian J. Chem., Sect. A
- Journal Volume
- 21
- Journal Issue
- 3
- Series
- Indian J. Chem., Sect. A.
- Journal Page Range
- 288-290
- ISSN
- 0376-4710
INIS
- Country of Publication
- India
- Country of Input or Organization
- India
- INIS RN
- 16033551
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- CATIONS; DIFFERENTIAL THERMAL ANALYSIS; HEATING; ION EXCHANGE; LANTHANUM COMPOUNDS; PH VALUE; PRASEODYMIUM COMPOUNDS; STABILITY; ZEOLITES
- Descriptors DEC
- CHARGED PARTICLES; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; IONS; MATERIALS; MINERALS; RARE EARTH COMPOUNDS; SILICATE MINERALS; THERMAL ANALYSIS