Issue 68, 2015

Synthesis of 5A zeolite coating/PSSF composites and the application for adsorption of methane from air

Abstract

To remove lean methane from air, an adsorption process involving a fixed-bed filled with small adsorbents is often used. This process, however, has some drawbacks such as large bed pressure drop and low bed utilization. To overcome these shortcomings, we fabricated 5A zeolite coating/paper-like sintered stainless steel fiber (PSSF) composites by using an in situ hydrothermal method on a 3-aminopropyltrimethoxysilane-functionalized support. The composites have large external surface areas and high voidages. They were further characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2 adsorption/desorption. Moreover, we packed these composites at the end of fixed beds to form structured fixed beds and tested adsorption dynamics. We analyzed the breakthrough curves obtained from adsorption dynamics by the length of the unused bed model (LUB). Results showed that the composites were successfully prepared with dense coating. Furthermore, the breakthrough curves of structured fixed beds were steeper than that of the fixed bed. We concluded that by forming structured fixed beds with 5A zeolite coating/PSSF composites, the bed pressure drop could be reduced and the bed utilization could be improved.

Graphical abstract: Synthesis of 5A zeolite coating/PSSF composites and the application for adsorption of methane from air

Article information

Article type
Paper
Submitted
23 Apr 2015
Accepted
08 Jun 2015
First published
09 Jun 2015

RSC Adv., 2015,5, 54913-54919

Author version available

Synthesis of 5A zeolite coating/PSSF composites and the application for adsorption of methane from air

D. Zhang, H. Zhang and Y. Yan, RSC Adv., 2015, 5, 54913 DOI: 10.1039/C5RA07380D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements