TY  - JOUR 
T1  - Modification of a Brazilian smectite clay with different quaternary ammonium salts
JO  - Química Nova
A1  - Delbem, Maria Flávia
A1  - Valera, Ticiane S.
A1  - Valenzuela-Diaz, Francisco R.
A1  - Demarquette, Nicole R.
SN  - 0100-4042
UL  - 10.1590/S0100-40422010000200015
VL  - 33 
Y1  - 2010
PB  - Brasil 
ER  -