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Title: Chlorine-free, monolithic lanthanide series rare earth oxide aerogels via epoxide-assisted sol-gel method

Abstract

Synthesis of chlorine-free, rare earth oxide aerogels from the lanthanide series was achieved using a modified epoxide-assisted sol-gel method. An ethanolic solution of the hydrated metal nitrate, propylene oxide, and ammonium carbonate was found to gel upon heating to 333 K. Critical point drying of the wet gel in CO 2 yielded monolithic aerogels. Most of the aerogels were amorphous as-prepared, but became nano-crystalline after calcination at 923 K in air. The aerogels had high surface areas (up to 150 m 2/g), low densities (40–225 mg/cm 3), and were photoluminescent.

Authors:
 [1];  [2];  [2];  [2];  [1];  [3];  [3];  [1];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Bremen (Germany)
  3. Univ. of Aveiro (Portugal)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); German Science Foundation (DFG); Fraunhofer Institute for Manufacturing Technology and Advanced Materials
OSTI Identifier:
1548325
Report Number(s):
LLNL-JRNL-782169
Journal ID: ISSN 0928-0707; 976425
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Sol-Gel Science and Technology
Additional Journal Information:
Journal Volume: 89; Journal Issue: 1; Journal ID: ISSN 0928-0707
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; rare earth oxide; aerogel; sol-gel; monolith; catalyst; photoluminescence; Rietveld refinement

Citation Formats

Worsley, M. A., Ilsemann, J., Gesing, Th. M., Zielasek, V., Nelson, A. J., Ferreira, R. A. S., Carlos, L. D., Gash, A. E., and Bäumer, M. Chlorine-free, monolithic lanthanide series rare earth oxide aerogels via epoxide-assisted sol-gel method. United States: N. p., 2018. Web. doi:10.1007/s10971-018-4811-y.
Worsley, M. A., Ilsemann, J., Gesing, Th. M., Zielasek, V., Nelson, A. J., Ferreira, R. A. S., Carlos, L. D., Gash, A. E., & Bäumer, M. Chlorine-free, monolithic lanthanide series rare earth oxide aerogels via epoxide-assisted sol-gel method. United States. doi:10.1007/s10971-018-4811-y.
Worsley, M. A., Ilsemann, J., Gesing, Th. M., Zielasek, V., Nelson, A. J., Ferreira, R. A. S., Carlos, L. D., Gash, A. E., and Bäumer, M. Fri . "Chlorine-free, monolithic lanthanide series rare earth oxide aerogels via epoxide-assisted sol-gel method". United States. doi:10.1007/s10971-018-4811-y.
@article{osti_1548325,
title = {Chlorine-free, monolithic lanthanide series rare earth oxide aerogels via epoxide-assisted sol-gel method},
author = {Worsley, M. A. and Ilsemann, J. and Gesing, Th. M. and Zielasek, V. and Nelson, A. J. and Ferreira, R. A. S. and Carlos, L. D. and Gash, A. E. and Bäumer, M.},
abstractNote = {Synthesis of chlorine-free, rare earth oxide aerogels from the lanthanide series was achieved using a modified epoxide-assisted sol-gel method. An ethanolic solution of the hydrated metal nitrate, propylene oxide, and ammonium carbonate was found to gel upon heating to 333 K. Critical point drying of the wet gel in CO2 yielded monolithic aerogels. Most of the aerogels were amorphous as-prepared, but became nano-crystalline after calcination at 923 K in air. The aerogels had high surface areas (up to 150 m2/g), low densities (40–225 mg/cm3), and were photoluminescent.},
doi = {10.1007/s10971-018-4811-y},
journal = {Journal of Sol-Gel Science and Technology},
number = 1,
volume = 89,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
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Works referenced in this record:

Strong Akaganeite Aerogel Monoliths Using Epoxides:  Synthesis and Characterization
journal, August 2003

  • Gash, Alexander E.; Satcher, Joe H.; Simpson, Randall L.
  • Chemistry of Materials, Vol. 15, Issue 17, p. 3268-3275
  • DOI: 10.1021/cm034211p

Synthesis of High-Surface-Area Alumina Aerogels without the Use of Alkoxide Precursors
journal, January 2005

  • Baumann, Theodore F.; Gash, Alexander E.; Chinn, Sarah C.
  • Chemistry of Materials, Vol. 17, Issue 2, p. 395-401
  • DOI: 10.1021/cm048800m