Synthesis and separation performance of SSZ-13 zeolite membranes on tubular supports

Date

2002-08-01

Author

Kalıpçılar, Halil
Noble, RD
Falconer, JL

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

39
views

0
downloads

SSZ-13 zeolite membranes were synthesized on the inside surface of porous stainless steel tubes. In parallel with zeolite pores, the membranes had nonzeolite pores that were larger than the 0.38-nm zeolite pore diameter, but single-gas permeances of H-2, N-2, CH4, and n-C4H10 decreased with increasing kinetic diameter at 298 K. The CO2/CH4, H-2/CH4 and H2/n-C4H10 ideal selectivities were 11, 9.0, and 63, respectively, at 298 K, and the separation selectivities for the mixtures of the same gas pairs were 12, 8.2, and 5.7 at 298 K. The SSZ-13 membranes selectively removed H2O from HNO3/H2O liquid mixtures by pervaporation. to break the azeotrope at 69.5 wt % HNO3. The permeate concentration was 38.3% HNO3, and the total flux was 0.12 kg/m(2).h at 298 K.

Subject Keywords

Permeation properties, Dealumination, Pervaporation, Acetic-acid, Oxalic-acid, NAA membrane, Alcohol-water, Gas permeation, Water mixtures, Zsm-5 membranes

URI

https://hdl.handle.net/11511/43480

Journal

CHEMISTRY OF MATERIALS

DOI

https://doi.org/10.1021/cm020248i

Collections

Department of Chemical Engineering, Article

Suggestions

OpenMETU
Core

Synthesis and separation properties of B-ZSM-5 zeolite membranes on monolith supports Kalıpçılar, Halil; Noble, RD; Falconer, JL (2002-12-01) Alumina-coated, silicon carbide monoliths were used as supports for B-ZSM-5 zeolite membranes, which were synthesized by in situ hydrothermal crystallization. Both 2 turn x 2 mm (66 channels) and 4 mm x 4 mm (22 channels) monoliths with effective membrane area/volume ratios of 10.6 and 7.2 cm(2)/cm(3), respectively, were used. The membranes separated C-4 and C-6 hydrocarbon isomer vapor mixtures with high selectivities. The selectivities and permeances were comparable to tubular ZSM-5 membranes for butane i...
The performance of polyethersulfone nanocomposite membrane in the removal of industrial dyes Mahmoudian, Mehdi; Ghasemıkouchameshgı, Mahmoud (2021-05-14) In the present study, graphene oxide was functionalized by hyperbranched epoxy and then used as an additive in the polyethersulfone membrane. The process of preparation and characterization of the synthesized hyperbranched epoxy, and graphene oxide modification was investigated by some analysis such as XRD, EDAX, FTIR, NMR, and TGA. Morphology of modified nanostructures, their distribution in the membrane matrix, and morphology of membranes were evaluated by TEM, FESEM analysis. Experimental results showed ...
Gas mixing in conical spouted beds Doğan, Neslin; Külah, Görkem; Department of Chemical Engineering (2020-12-28) Conical spouted beds are relatively new generation gas-solid flow reactors used in various applications such as drying, catalytic polymerization, treatment of wastes, particle coating and chemical vapor deposition due to their advantages over cylindrical spouted beds. For complete characterization of conical spouted beds, determination of the local flow structure based on gas velocity and gas mixing is of paramount importance. There are limited studies on local gas behavior in conical spouted beds, especial...
Polycarbonate based zeolite 4a filled mixed matrix membranes: preparation, characterization and gas separation performances Şen, Değer; Yılmaz, Levent; Department of Chemical Engineering (2008) Developing new membrane morphologies and modifying the existing membrane materials are required to obtain membranes with improved gas separation performances. The incorporation of zeolites and low molecular-weight additives (LMWA) into polymers are investigated as alternatives to modify the permselective properties of polymer membranes. In this study, these two alternatives were applied together to improve the separation performance of a polymeric membrane. The polycarbonate (PC) chain characteristics was a...
Production and performance evaluation of ZIF-8 based binary and ternary mixed matrix gas separation membranes Keser, Nilay; Yılmaz, Levent; Kalıpçılar, Halil; Department of Chemical Engineering (2012) Mixed matrix membranes (MMMs) have gained importance because they combine the desirable properties of the polymers and the organic/inorganic filler materials and they may have a very big potential. In this study polyethersulfone (PES) was used as polymeric material, and Zeolitic Imidazolate Framework-8 (ZIF-8) was used as porous filler material, and 2-hydroxy 5-methyl aniline(HMA), was used as a third component in membrane formulation. In this study, ZIF-8 crystals were synthesized with varying particle siz...

Citation Formats

H. Kalıpçılar, R. Noble, and J. Falconer, “Synthesis and separation performance of SSZ-13 zeolite membranes on tubular supports,” CHEMISTRY OF MATERIALS, pp. 3458–3464, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43480.