Synthesis of intercalated Al-hydroxy-montmorillonite

Authors

  • M. Lourdes Chávez-García Universidad Nacional Autónoma de México
  • Liberto de Pablo-Galán Universidad Nacional Autónoma de México
  • M. Pilar Saucedo-Ramírez Universidad Nacional Autónoma de México

DOI:

https://doi.org/10.29356/jmcs.v50i1.1300

Keywords:

Intercalated aluminum montmorillonite, clays, silicates, oligomer

Abstract

Abstract. Montmorillonite from Durango, Mexico, of composition (Si3.88Al0.12)(Al1.41Mg0.59)O10(OH)2(Ca0.07Mg0.11Na0.28K0.06), surface area 42.07 m2g-1, d001 spacing 12.50 Å, and pore volume 0.002 cm3g-1, was intercalated with Al-hydroxy oligomer. The modified clay developed a surface area of 287.86 m2g-1, pore volume of 0.103 cm3g-1, and d001 spacing of 18.70 Å. Dehydration to 70 °C shift the d001 spacing to 17.29 Å; dehydroxylation started at 150 °C and by 300 °C had lost 1.92 w% and reduced the d001 spacing to 17.34 Å.

Resumen. Montmorillonita procedente de Durango, México, de composición (Si3.88Al0.12)(Al1.41Mg0.59)O10(OH)2(Ca0.07Mg0.11Na0.28K0.06), área superficial 42.07 m2g-1, espaciamiento d001 12.50 Å, y volumen de poro 0.002 cm3g-1, fue intercalada con el oligómero de Al. La arcilla modificada desarrolló un área superficial de 287.86 m2g-1, volumen de poro 0.103 cm3g-1, y espaciamiento d001 18.70 Å. Se deshidrata a 70 °C reduciendo el espaciamiento d001 a 17.29 Å; su deshidroxilación
se inicia a 150 °C y a 300 °C perdió 1.92 % en peso, modificando d001 a 17.34 Å.

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Author Biographies

M. Lourdes Chávez-García, Universidad Nacional Autónoma de México

Facultad de Química

Liberto de Pablo-Galán, Universidad Nacional Autónoma de México

Instituto de Geología

M. Pilar Saucedo-Ramírez, Universidad Nacional Autónoma de México

Facultad de Química

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Published

2020-07-24

Issue

Vol. 50 No. 1 (2006): Regular Issue

Section

Regular Articles

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