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Separation and Recovery of Tetramethyl Ammonium Hydroxide with Zeolitic Adsorbents

 

Authors: S. Nishihama, K. Takatori and K. Yoshizuka

 

Affiliation: Department of Chemical Engineering, Faculty of Environmental Engineering, The University of Kitakyushu, Hibikino 1-1, Kitakyushu 808-0135, Japan

Published in: Ion Exch. Lett. 2010, 3(1), 1-6

 

Permanent link to this page: http://iel.vscht.cz/abstracts/1803-4039-03-0001.htm

 

DOI: 10.3260/iel.2010.03.001

 

License:  Creative Commons License

 

Keywords: Adsorption; tetramethyl ammonium hydroxide; zeolite
 

Abstract: Separation and recovery of tetramethyl ammonium hydroxide (TMAH) has been investigated, employing several zeolites as adsorbents. Zeolite X, prepared by using TMAH as a structure directing agent, possesses highest adsorption ability among the adsorbents investigated in the present work, which corresponds to the specific surface area and pore volume of the zeolite. The adsorption amount of TMAH with the zeolitic adsorbents increases with increase in pH value in the aqueous solution, indicating the adsorption progresses via cation exchange mechanism. The chromatographic operation is finally conducted, using granulated zeolitic adsorbents to prevent from the pressure-drop, and the quantitative adsorption-elution processing of TMAH can be achieved.