Synthesis and Seeding Time Effect on the Inter-Crystalline Structure of Hydroxy-Sodalite Zeolite Membranes by Single Gas (H2 and N2) Permeation

Authors

  • Ali Akbar Babaluo Nanostructure Materials Research Center (NMRC), Sahand University of Technology, P.O. Box 51335-1996 Tabriz, I.R. IRAN
  • Behroz Bayati Nanostructure Materials Research Center (NMRC), Sahand University of Technology, P.O. Box 51335-1996 Tabriz, I.R. IRAN
  • Pejman Namini Nanostructure Materials Research Center (NMRC), Sahand University of Technology, P.O. Box 51335-1996 Tabriz, I.R. IRAN
Abstract:

Microporous hydroxy-sodalite zeolite membranes with different morphologies were synthesized via secondary growth technique with vacuum seeding on tubular α-Al2O3 supports at two different synthesis conditions (i.e. two different routes). Microstructures of the synthesized membranes were characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM) and single gas permeation using H2 and N2. Also, the effect of seeding time on microstructure and performance of the synthesized hydroxy-sodalite top-layers was investigated at four different levels (60, 120, 180 and 240 s). Permeation test was carried out in order to attain a more exact comparison of both applied routes and seeding times. Microstructure of the synthesized hydroxy-sodalite zeolite membrane layers and the effects of the investigated factors on the elimination of inter-crystalline pores were evaluated by the permeation of single gases (H2 and N2) under different pressure differences at ambient temperature. The permeation results confirmed the high quality of the hydroxy-sodalite zeolite membranes manufactured via the first route at seeding time of 60s for the hydrogen purification under extremely low temperatures (< 200 K) and/or extremely high pressures (> 100 bars).

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

synthesis and seeding time effect on the inter-crystalline structure of hydroxy-sodalite zeolite membranes by single gas (h2 and n2) permeation

microporous hydroxy-sodalite zeolite membranes with different morphologies were synthesized via secondary growth technique with vacuum seeding on tubular α-al2o3 supports at two different synthesis conditions (i.e. two different routes). microstructures of the synthesized membranes were characterized by x-ray diffraction (xrd), scanning electron microscope (sem) and single gas permeation using ...

full text

Effect of Dehydration Temperature on the H2 Separation Potential of Hydroxy Sodalite Zeolite Membranes

The main goal of this work was to synthesize and evaluate the effect of dehydration temperature on the potential application of hydroxy sodalite zeolite membrane. Hydroxy sodalite zeolite membranes were synthesized via direct hydrothermal method onto a tubular alumina support without seeding in a hot air oven. The synthesized membranes were characterized by X-ray diffraction (XRD) and scanning ...

full text

Synthesis and Seeding Time Effect on the Performance of Nanostructure Sodalite Membranes

> Secondary growth technique was successfully applied for the synthesis of nanostructure sodalite membranes with vacuum seeding ...

full text

effect of dehydration temperature on the h2 separation potential of hydroxy sodalite zeolite membranes

the main goal of this work was to synthesize and evaluate the effect of dehydration temperature on the potential application of hydroxy sodalite zeolite membrane. hydroxy sodalite zeolite membranes were synthesized via direct hydrothermal method onto a tubular alumina support without seeding in a hot air oven. the synthesized membranes were characterized by x-ray diffraction (xrd) and scanning ...

full text

Effect of Gas Mixture H2-N2 on Microstructure and Microhardness of Steel 32CDV13 Nitrided by Plasma

Nitriding treatments of low alloyed steels can be performed only at relatively low temperatures in order to avoid a decrease of corrosion resistance due to nitride layers formation. These conditions promote the formation of the compound layer and diffusion zone, which shows high hardness and good corrosion resistance. In the present paper, the influence of the gas mixture N2-H2 in plasma nitrid...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 28  issue 4

pages  1- 12

publication date 2009-12-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023