Membrane-based vapor permeation (VP) is regarded as a highly efficient technology

featuring low energy consumption and free salt fouling. In this study

we have demonstrated upscaling chabazite (CHA) zeolite membranes on the 19-channel

α

-Al

2

O

3

monolithic supports synthesized from high-silica gel (SiO

2

/Al

2

O

3

ratio of 200) for the dehydration of acetic acid by VP. The monolithic membrane presents higher surface-to-volume ratio and a-tenfold greater mechanical strength compared to tubular ones. The micromorphology and crystallinity of the monolithic CHA zeolite membranes were characterized by scanning electron micrographs and X-ray diffraction analysis. The single-gas permeation test and the effects of temperature

feed water content and feed flow rate on the VP separation performance of monolithic CHA zeolite membrane for dehydration of acetic acid were investigated. Moreover

the stability test of monolithic CHA zeolite membranes was carried out. The 19-channel monolithic membrane achieved a comparable separation performance (water flux of 0.63 kg m

-2

·h

-1

and selectivity of 369 at 393 K) with the reported small-area zeolite membranes in water/acetic acid mixtures. It is demonstrated that the monolithic CHA zeolite membranes could be transformative candidates for industrial dehydration of acetic acid under harsh environments.