Enhancement of the CO2 retention capacity of Y zeolites by Na and Cs treatments:: Effect of adsorption temperature and water treatment

被引：81

作者：

Diaz, Eva ^{[1
]}

Munoz, Emilio ^{[1
]}

Vega, Aurelio ^{[1
]}

Ordonez, Salvador ^{[1
]}

机构：

[1] Univ Oviedo, Dept Chem Engn & Environm Technol, E-33006 Oviedo, Spain

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2008年 / 47卷 / 02期

关键词：

D O I：

10.1021/ie070685c

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

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 degrees 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 highest temperatures (100-200 degrees C), whereas Na treatments hardly affect adsorption properties of the parent material. The evolution of the retention capacity of carbon dioxide after water adsorption-desorption was also studied. It was observed that water pretreatment enhances the adsorption capacity of the Cs-treated zeolites.

引用

页码：412 / 418

页数：7

共 34 条

[1] Acidity characterization by microcalorimetry and relationship with reactivity [J].

Auroux, A .

TOPICS IN CATALYSIS, 1997, 4 (1-2) :71-89

[2]

Briggs D., 1990, AUGER XRAY PHOTOELEC, V1

[3] Adsorption equilibrium of methane, carbon dioxide, and nitrogen on zeolite 13X at high pressures [J].

Cavenati, S ;

Grande, CA ;

Rodrigues, AE .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2004, 49 (04) :1095-1101

[4]

DAVISON J, 2004, P 7 INT C GREENH GAS, V1, P3

[5] Fixed-bed adsorption of carbon dioxide-helium, nitrogen-helium and carbon dioxide-nitrogen mixtures onto silicalite pellets [J].

Delgado, JA ;

Uguina, MA ;

Sotelo, JL ;

Ruíz, B .

SEPARATION AND PURIFICATION TECHNOLOGY, 2006, 49 (01) :91-100

[6] Benzylation of benzene over Fe-modified ZSM-5 zeolites:: Correlation between activity and adsorption properties [J].

Díaz, E ;

Ordóñez, S ;

Vega, A ;

Auroux, A ;

Coca, J .

APPLIED CATALYSIS A-GENERAL, 2005, 295 (02) :106-115

[7] Enhancement of the CO2 retention capacity of X zeolites by Na- and Cs-treatments [J].

Diaz, Eva ;

Munoz, Emilio ;

Vega, Aurelio ;

Ordonez, Salvador .

CHEMOSPHERE, 2008, 70 (08) :1375-1382

[8] INFRARED INTERNAL-REFLECTION AND TRANSMISSION SPECTRA OF SYNTHETIC X-ZEOLITES AND Y-ZEOLITES CONTAINING NA+, NH4+ AND CA2+ CATIONS [J].

GALLEI, E ;

EISENBACH, D .

JOURNAL OF CATALYSIS, 1975, 37 (03) :474-485

[9] On the introduction of intracrystalline mesoporosity in zeolites upon desilication in alkaline medium [J].

Groen, JC ;

Peffer, LAA ;

Moulijn, JA ;

Pérez-Ramírez, J .

MICROPOROUS AND MESOPOROUS MATERIALS, 2004, 69 (1-2) :29-34

[10] BASE CATALYSIS BY ALKALI MODIFIED ZEOLITES .3. ALKYLATION WITH METHANOL [J].

HATHAWAY, PE ;

DAVIS, ME .

JOURNAL OF CATALYSIS, 1989, 119 (02) :497-507

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