Numerical analysis of H2/He gas separation experiments performed with a MFI-type tubular zeolite membrane

Advances of zeolite based membrane for hydrogen production via water gas shift reaction

“…However, the selection of selective hydrogen layer is still the main challenge to commercialize it. The potential of zeolite based membrane for gas separation has been demonstrated well by various authors [19][20][21]. Moreover, the high price of Palladium based membrane for hydrogen selective layer make zeolite more interesting choice.…”

“…Accordingly, the pore size of MFI zeolite membranes are reduced by multiform modification such as catalytic cracking of a methyl diethoxysilane (MDES) precursor to deposit mono silica inside the zeolitic channels [70,59,10]. By reduction of zeolite membrane pores size, it is expected that the H 2 selectivity will increase [20,47,55,71,65,62,50].…”

“…Hasegawa et al [73] modified Y-type zeolite membranes by Pt catalyst. Pt catalyst was used to improve the CO conversion and selectivity by dispersing it in the zeolite membrane (ZSM-5) [77,20,55,16,78,79]. To further optimize the performance of zeolite membranes, composite membrane was prepared by coating an Rh-loaded C-Al 2 O 3 membrane with a defect-free SiO 2 layer hence SiO2/Rh/C-Al 2 O 3 membrane can improve the CO oxidation and the H 2 production will increase rapidly [80,81].…”

A generalized numerical framework for solving cocurrent and counter-current membrane models for gas separation

“…Separation processes have gained critical attention in several important fields of science and engineering. In the oil and gas industries, membrane separation plays a crucial role in CO 2 removal from sour natural gas [ 1 ] and the recovery of hydrogen and helium [ 2 , 3 , 4 ]. In air separation, it is used for nitrogen production [ 5 ].…”

“…A large number of HFMs can be bundled in a shell and tube-like structure. The feed/permeate can flow either through shell or tube side [ 3 , 17 ]. The design variables include feed-permeate relative direction, feed/permeate pressure, active fiber length, fiber diameter, and number of fibers [ 18 ].…”