PRELIMINARY STUDY OF THE ACID PROPERTIES OF A KAOLIN TREATED WITH ULTRASONIC ENERGY AND INORGANIC ACID SOLUTIONS

  • L. J. Rodríguez-Castillo
  • A. Castillo-Mares Instituto Tecnológico de Ciudad Madero
  • R. García-Alamilla
  • R. Silva-Rodrigo
  • G. Sandoval-Robles Sandoval-Robles Instituto Tecnológico de Ciudad Madero
Keywords: treated kaolin, acid properties, ultrasonic energy, acid solutions, TPD-NH3, isopropanol dehydration

Abstract

The present work deals with the study of the acid properties of comercial kaolin which was first calcined and later treated with HCl, HNO3 and H2SO4 2M solutions making use of ultrasonic energy as a mean of agitation. The techniques used to determine the acidity were NH3-TPD and 2-propanol dehydration. Through NH3-TPD was determined the acid distribution in relation to temperature variation. Results from this technique indicated the presence of acid sites from weak to very strong concentrating in the range of moderate to very strong acidity. The order of acidity shown by this technique was H2SO4>HCl >HNO3 indicating the same the tendency with the conversion-selectivity results in the dehydration of isopropanol where propylene and diisopropyl ether were obtained as products. The dehydration of 2-propanol allowed the evaluation of the catalytic activity of the materials and their acid character.

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Published
2020-09-08
How to Cite
Rodríguez-Castillo, L. J., Castillo-Mares, A., García-Alamilla, R., Silva-Rodrigo, R., & Sandoval-Robles, G. S.-R. (2020). PRELIMINARY STUDY OF THE ACID PROPERTIES OF A KAOLIN TREATED WITH ULTRASONIC ENERGY AND INORGANIC ACID SOLUTIONS. Revista Mexicana De Ingeniería Química, 5(3), 329-334. Retrieved from http://www.rmiq.org/ojs311/index.php/rmiq/article/view/2015

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