[1] Inst Tecnol Celaya, Dept Ingn Quim, Guanajuato, Mexico
[2] Univ Autonoma Nuevo Leon, Fac Ciencias Quim, San Nicolas De Los Garza, Nuevo Leon, Mexico
[3] Univ Michoacana, Fac Ingn Quim, Morelia, Michoacan, Mexico
[4] Texas A&M Univ, Dept Chem Engn, College Stn, TX 77843 USA