Ceramic-zeolite composite membranes and their application for separation of vapor/gas mixtures

Transient permeation of butanes through ZSM‐5 and ZSM‐11 zeolite membranes

“…Because their pore sizes are of molecular dimensions and they have high chemical and thermal stability, zeolite membranes have the potential to perform many industrially important separations. Films of zeolite types MFI (Bai et al, 1995;Bakker et al, 1996;Bein, 1996;Davis and Lobo, 1992;den Exter et al, 1996;Gora et al, 2001;Jia et al, 1994;Kapteijn et al, 1995a;Matsukata et al, 1993;Noble and Falconer, 1995;Tuan et al, 1999;Vroon, 1995;Vroon et al, 1998;Xomeritakis et al, 1999;Yan et al, 1995), FER (Matsukata et al, 1996;Nishiyama et al, 1997), FAU (Bein, 1996;Kusakabe et al, 1998,and Kikuchi, 1997, MEL , ANA (Matsukata and Kikuchi, 1997), AFI (Bein, 1996), Beta , and zeolite L (Bein, 1996) have been reported, with silicalite and ZSM-5 (both MFI-type) receiving the most attention.…”

Microwave-assisted hydrothermal synthesis of hydroxy-sodalite zeolite membrane

“…Several preparation methods have been developed, such as in situ hydrothermal synthesis [6][7][8], vapor phase transport method [9], secondary growth method [10][11][12] or embedding microcrystals of zeolite into a matrix [13]. Ideally, for a better separation performance, zeolite membrane should preferably be made of pure zeolite crystals with uniform and small particle size.…”

Synthesis and perfection evaluation of NaA zeolite membrane

“…It will not only cut the equipment and operation cost off, but also be operated continuously if the zeolites can be configured into a membrane form. Since 1990s, much effort has been paid in the synthesis of zeolite membrane [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Till now, different types of zeolite membranes, e.g.…”

“…butane isomers. Although high separation factors have been obtained for these mixtures, the MFI zeolite membrane has not shown good separation performance for permanent gases or permanent gas/organic gas because of the large pore size and the hydrophobic nature of the zeolite [12][13][14][15]. Therefore, the investigation of the zeolite membranes with small pore size has attracted much attention [19][20][21][22][23][24][25].…”