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An Ultrahigh CO2-Loaded Silicalite-1 Zeolite: Structural Stability and Physical Properties at High Pressures and Temperatures

Abstract: We report the formation of an ultrahigh CO2-loaded pure-SiO2 silicalite-1 structure at high pressure (0.7 GPa) from the interaction of empty zeolite and fluid CO2 medium. The CO2-filled structure was characterized in situ by means of synchrotron powder X-ray diffraction. Rietveld refinements and Fourier recycling allowed the location of 16 guest carbon dioxide molecules per unit cell within the straight and sinusoidal channels of the porous framework to be analyzed. The complete filling of pores by CO2 molecules favors structural stability under compression, avoiding pressure-induced amorphization below 20 GPa, and significantly reduces the compressibility of the system compared to that of the parental empty one. The structure of CO2-loaded silicalite-1 was also monitored at high pressures and temperatures, and its thermal expansivity was estimated.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Inorg. Chem., 2018, 57 (11), pp 6447?6455

Editorial: American Chemical Society

 Fecha de publicación: 08/05/2018

Nº de páginas: 9

Tipo de publicación: Artículo de Revista

DOI: 10.1021/acs.inorgchem.8b00523

ISSN: 0020-1669,1520-510X

Proyecto español: MAT2016-75586-C4-1-P : MAT2016-75586-C4-3-P : MAT2015-71842-P : MAT2015-71070-REDC

Url de la publicación: https://doi.org/10.1021/acs.inorgchem.8b00523

Autores/as

MARQUEÑO, TOMÁS

SANTAMARÍA PÉREZ, DAVID

CHULIÁ JORDÁN, RAQUEL

JORDÁ, JOSÉ L.

REY, FERNANDO

MCGUIRE, CHRIS

KAVNER, ABBY

MACLEOD, SIMON G.

DAISENBERGER, DOMINIK

POPESCU, CATALÍN

RODRÍGUEZ HERNÁNDEZ, PLÁCIDA

MUÑOZ, ALFONSO