Published 2017 | Version v1
Journal article Metadata-only

Analysis of the interaction of CO2 with Na, K, and Ca-exchanged mordenite. An infrared spectroscopic study

Creators

  • 1. UNAM, Facultad de Quimica, Unidad de Investigacion en Catalisis, Ciudad Universitaria, 04510 Ciudad de Mexico (Mexico)

Description

To enquire on the CO2 capture on solid adsorbents, the interactions of CO2 with mordenite exchanged with Na, K, and Ca were analyzed using Ftir spectroscopy. The results reveal that physisorbed CO2 and different carbonate species are present on the zeolite surface. At high CO2 concentration, the cation polarizing power determines the type of carbonates formed: mainly bidentate carbonates on Ca-mordenite; bi and polydentate carbonates on Na-mordenite; polydentate carbonates on K-mordenite. At low CO2 (10-4 Torr), mostly bidentate carbonates are formed. Pre-absorbed water produces bicarbonates and decreases CO2 adsorption. (author)

Additional details

Publishing Information

Journal Title
Journal of the Mexican Chemical Society
Journal Volume
61
Journal Issue
2
Journal Page Range
p. 102-108
ISSN
1870-249X

INIS

Country of Publication
Mexico
Country of Input or Organization
Mexico
INIS RN
49083368
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACID CARBONATES; ADSORBENTS; ADSORPTION; CAPTURE; CARBON DIOXIDE; CARBONATES; CATIONS; CONCENTRATION RATIO; FOURIER TRANSFORMATION; INFRARED SPECTRA; INTERACTIONS; MORDENITE; SOLIDS; SURFACES; WATER
Descriptors DEC
CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHARGED PARTICLES; DIMENSIONLESS NUMBERS; HYDROGEN COMPOUNDS; INORGANIC ION EXCHANGERS; INTEGRAL TRANSFORMATIONS; ION EXCHANGE MATERIALS; IONS; MATERIALS; MINERALS; OXIDES; OXYGEN COMPOUNDS; SILICATE MINERALS; SORPTION; SPECTRA; TRANSFORMATIONS; ZEOLITES