Abstract (EN):
Composite carbon molecular sieve membranes (c-CMSM) were prepared from phenolic
resin loaded with boehmite by a single dipping¿drying¿pyrolysis step. The composite membrane
was analyzed by scanning electron microscopy, high resolution transmission electron
microscopy, X-ray diffraction, thermogravimetric analysis, mercury porosimetry, CO2
adsorption and permeation experiments. It was produced a 2 lm thick composite uniform
layer on top of a a-Al2O3 support. The composite top layer exhibited nanowires of Al2O3 1¿
2 nm thick and 10¿30 nm long well dispersed in a microporous carbon matrix. The micropores
network accounted for 63% of the total pore volume (DR isotherm). The c-CMSM exhibited
ideal O2/N2 and C3H6/C3H8 permselectivities of 5 and 15, respectively. The performance
of the c-CMSM for pair C3H6/C3H8 was above the upper bound curve for polymeric membranes,
making it a promising vehicle for olefin purification.
Language:
English
Type (Professor's evaluation):
Scientific
Notes:
Publicação abrangida pelo Journal Citation Reports 2015
No. of pages:
11