1. Facultad de Química; Departamento de Ingeniería Química; Universidad Nacional Autónoma de México; 04510 México D.F. México
2. Department of Chemical and Biological Engineering; Centre for Catalysis Research and Innovation; University of Ottawa; Ottawa Ontario, Canada K1N 6N5
3. Department of Chemical Engineering; Institute for Polymer Research; University of Waterloo; Waterloo Ontario, Canada N2L 3G1