3.4. H2/CO2 gas separation tests
In order to further evaluate the effects of the proposed different-sized
seeding in combination with variable temperature/time method on the
quality of tubular ZSM-5 zeolite membranes, the gas separation tests
using H2/CO2 binary mixture were
utilized at room temperature. We selected four membranes to study ho w
these methods improve in membrane quality. The membranes M3, M7, M9, and
M14 as representative of the single-layer, dual-layer, triple-layer, and
variable temperature/time methods were selected, respectively. The
results of H2/CO2 separation tests are
shown in Fig. 10.