http://iet.metastore.ingenta.com
1887

Synthesis of low shrinkage monolith alumina aerogels by surface modification and ambient pressure drying

Synthesis of low shrinkage monolith alumina aerogels by surface modification and ambient pressure drying

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
Micro & Nano Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

The authors have synthesised a kind of low shrinkage alumina (Al2O3) aerogel using an inexpensive salt of aluminium (AlCl3·6H2O) via tetraethoxysilane modification and an ambient pressure drying process. The morphology, pore structure, surface group, crystal phase and thermal properties of the Al2O3 aerogel are analysed by X-ray diffractometer, scanning electron microscopy, Fourier transform infrared spectra and nitrogen adsorption test. Further improvement in thermal stability and thermal shrinkage are obtained by incorporation of silicon (Si) atoms during the aerogel preparation. The specific surface area of modified aerogel is 480 m2/g and the diameter shrinkage is 8% after drying, and reach 304 m2/g and 16.5% after heating at 1000°C. The approach, which is straightforward, inexpensive and safe, can be employed to prepare a monolithic mesoporous material with low shrinkage and high-temperature resistance. This will further promote the potential application of packaging and thermal insulation materials.

References

    1. 1)
    2. 2)
    3. 3)
    4. 4)
      • 4. Pierre, A.C., Pajonk, G.M.: ‘Chemistry of aerogels and their applications’, ChemInform, 2002, 102, p. 4243.
    5. 5)
    6. 6)
    7. 7)
    8. 8)
    9. 9)
    10. 10)
    11. 11)
    12. 12)
    13. 13)
    14. 14)
    15. 15)
    16. 16)
    17. 17)
      • 17. Grader, G.S., Rifkin, Y., Cohen, Y., et al: ‘Preparation of alumina aerogel films by low temperature CO2 supercritical drying process’, J. Sol-Gel Sci. Technol., 1997, 8, pp. 825829.
    18. 18)
    19. 19)
    20. 20)
    21. 21)
    22. 22)
    23. 23)
    24. 24)
http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2018.5077
Loading

Related content

content/journals/10.1049/mnl.2018.5077
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address