×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Membrane for H2 seperation

Membrane for H2 seperation

Membrane for H2 seperation

(OP)
I am looking for a membrane to seperate hydrogen from its mixture with nitrogen and some small amount of other gases.

RE: Membrane for H2 seperation

Speaking professionally (I work for Air Liquide, so I have to skirt the forum rules here) you have not given enough information to determine if a membrane would work or be economically viable.  

A metal membrane (Pt/Pd) separates great, but is not cost effective at much more than bench scale.  A polymer membrane might work, but have a more limited temperature range and the "small amount of other gases" might be a show stopper if the other gas is say methylene chloride or HCl.  This also becomes a cost issue, as the systems have a minimum size to be worth the manufacturers cost

Dave Hasse
AIr Liquide Research
dave.hasse@airliquide.com

RE: Membrane for H2 seperation

In terms of hydrogen permeabilities the relationship is as follows:
Nb>V>Ta>Pd>Fe>SS304>Cu>Pt>Al (T=352 deg C to 727 deg C)

Buxbaum, R E and Kinney, A B Ind. Eng. Chem. Res. 35 (1996) 530

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources