×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

porous ceramic

porous ceramic

porous ceramic

(OP)
  

can anyone help me about porous ceramics....what are these all about. the possible methods to be able to obtain such kind of body , the necessary chemical analysis needed ,the possible materials involved etc.,just anything about it....

thanks,

xilca
                      

RE: porous ceramic

If you are still looking for info on this topic, there is a good article on foamed ceramics in this month's (Vol 10 No 2 Feb'02) issue of Materials World.

Regards

Ed

RE: porous ceramic

If you still need more information about porous ceramics I would be glad to help.  I was director of R&D for a technical porous ceramics company from 1988 to 1999 when I left to start my own company.  You can contact me at cshec@capital.net

RE: porous ceramic

We are setting up an operation to make porous ceramics and would be happy to discuss your application.

Sam C Weaver
Millennium Materials, Inc
samcweaver@aol.com

RE: porous ceramic

Hellow,
Porous ceramics are one of the emerging field. It has applications as catalysts, filters and memberanes. You can select the synthesis routes as per your requirements. the porosity ranges from meso to macro pores. the reticulate ceramics also belong to this catagory. The porosity features of your synthesised body could be analyesd by permeabilty test or by mercurry porosimeter. The BET surface area also gives you the idea about pore size distribution. The ceramic slurry with suitable dispersant, binder, and anti foaming agent could be formed and soaked with polyurethane foams which is further dried and heat treated to get porous ceramics. it has interconnected porosity network good for filter purposes. The chemical methods called sol gel technique is used for membranes with ordered porosity. The waxing method also resulted in porosity of desired structures. But you have to design a mould of required applications. Do you look for Honeycomb structures? It is also a porous ceramic used for particulate filters. There are many research publications available in J.Am.Ceram.Soc for the last five years.
if you need more informtaions please send the reply mail.
ananth777kumar@yahoo.com
regards
kumar




 

RE: porous ceramic

I know that zeolites, pillared clays, and MCM-41 type materials have porous structures. These materials (basically powders) are used in membranes or in seperation process. Zeolites especially have very good selective seperation properties. You can take a look at www.zeolyst.com for more information about zeolites.

Regards

Gunes

RE: porous ceramic

Hello,
One of suitable method for obtaining porous materials is so called selective leaching method. As may you knows a clay minerals consist from layered structure ( tetrahedral silica and octahedral alumina or magnesium). If you treat them in suitable conditions by acid or base respective cations will be removed and lift pores. Porous silica obtained by this method contains huge amount of silanol groups on the surface and suitable for using as adsorbents etc. Porous silica obtained by this method shows BET surface area up to 600m2/g. More than silica gel!

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close