Enhancement of the CO2 Retention Capacity of Y Zeolites by Na and Cs Treatments: Effect of Adsorption Temperature and Water Treatment

Adsorption of carbon dioxide on parent and alkaline-modified Y zeolites was investigated by temperature-programmed desorption (TPD) analysis of these materials previously saturated with CO2 at different temperatures (50−200 °C). Parent zeolite was treated with different sodium and cesium aqueous solutions, using both carbonates and hydroxides as precursors. Morphological, crystallographic, and chemical properties of these materials were determined by nitrogen physisorption, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, inductively coupled plasma (ICP), X-ray photoelectron spectroscopy (XPS), and NH3-TPD. Slight desilication phenomena were observed when hydroxides were used as precursors, whereas the treatment with Cs salts leads to higher crystallinity losses. Several successive adsorption−desorption cycles were carried out in order to check the stability of the adsorbents. Both Cs treatments lead to an enhancement of the retention capacity when adsorption is carried out at the ...

[1]  S. Ordóñez,et al.  Benzylation of benzene over Fe-modified ZSM-5 zeolites: Correlation between activity and adsorption properties , 2005 .

[2]  S. Sircar,et al.  Chemisorption of carbon dioxide on potassium-carbonate-promoted hydrotalcite. , 2007, Journal of colloid and interface science.

[3]  J. Andresen,et al.  Preparation and characterization of novel CO2 “molecular basket” adsorbents based on polymer-modified mesoporous molecular sieve MCM-41 , 2003 .

[4]  G. El-Shobaky,et al.  Comparative study of molybdenum oxide in NaY zeolite prepared by conventional impregnation and vapor-phase deposition techniques , 2006 .

[5]  J. Lercher,et al.  On the interaction of light amines and alcohols with alkali metal exchanged X zeolites , 2006 .

[6]  A. Sakoda,et al.  Adsorption of Carbon Dioxide onto Hydrophobic Zeolite under High Moisture , 1997 .

[7]  María A. Uguina,et al.  Fixed-bed adsorption of carbon dioxide–helium, nitrogen–helium and carbon dioxide–nitrogen mixtures onto silicalite pellets , 2006 .

[8]  Hsien Hui Khoo,et al.  Life cycle investigation of CO2 recovery and sequestration. , 2006, Environmental science & technology.

[9]  Z. Derriche,et al.  Adsorption of carbon dioxide by X zeolites exchanged with Ni2+ and Cr3+: isotherms and isosteric heat. , 2004, Journal of colloid and interface science.

[10]  D. Briggs,et al.  Practical surface analysis: By auger and x-ray photoelectron spectroscopy , 1983 .

[11]  T. Okuhara,et al.  Change in pore structure of MFI zeolite by treatment with NaOH aqueous solution , 2001 .

[12]  Mark E. Davis,et al.  Base catalysis by alkali modified zeolites. III. Alkylation with methanol , 1989 .

[13]  Lorenz T. Biegler,et al.  Optimization of a Pressure-Swing Adsorption Process Using Zeolite 13X for CO2 Sequestration , 2003 .

[14]  J. Scherzer.  Octane-Enhancing, Zeolitic FCC Catalysts: Scientific and Technical Aspects , 1989 .

[15]  Masaki Yasuda,et al.  Relationship between properties of various zeolites and their carbon dioxide adsorption behaviors in pressure swing adsorption operation , 1988 .

[16]  A. Auroux.  Acidity characterization by microcalorimetry and relationship with reactivity , 1997 .

[17]  R. T. Yang,et al.  Sorbents for air prepurification in air separation , 2000 .

[18]  Xiaotong Wei,et al.  Development and characterization of mesoporosity in ZSM-12 by desilication , 2006 .

[19]  W. Sachtler,et al.  FTIR study of the effects of water pretreatment on the acid sites and the dispersion of metal particles in Y zeolites and mordenites , 1992 .

[20]  Y. Okamoto,et al.  Decarbonylation of group six metal carbonyl M(CO)6 (M=Cr, Mo, W) encaged in FAU zeolites: basicity of framework oxygen , 2001 .

[21]  E Gallei,et al.  Infrared spectroscopic studies of the adsorption of carbon dioxide and the coadsorption of carbon dioxide and water on CaY- and NiY-zeolites☆ , 1976 .

[22]  K. Sing.  Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984) , 1985 .

[23]  J. Moulijn,et al.  On the introduction of intracrystalline mesoporosity in zeolites upon desilication in alkaline medium , 2004 .

[24]  J. Poston,et al.  Adsorption of CO2 on molecular sieves and activated carbon , 2001 .

[25]  Antoni W. Morawski,et al.  High temperature ammonia treatment of activated carbon for enhancement of CO2 adsorption , 2004 .

[26]  M. Seah,et al.  Auger and x-ray photoelectron spectroscopy , 1990 .

[27]  D. Brunel,et al.  Cesium oxide encapsulation in faujasite zeolites. Effect of framework composition on the nature and basicity of intrazeolitic species , 1996 .

[28]  P. Smirniotis,et al.  High-Temperature Sorbents for CO2 Made of Alkali Metals Doped on CaO Supports , 2004 .

[29]  Alírio E. Rodrigues,et al.  Adsorption Equilibrium of Methane, Carbon Dioxide, and Nitrogen on Zeolite 13X at High Pressures , 2004 .