Fast and Minimal-Solvent Production of Superinsulating Silica Aerogel Granulate

Lukas Huber, Shanyu Zhao, Wim J. Malfait, Sirje Vares, Matthias M. Koebel

Research output: Contribution to journalArticleScientificpeer-review

29 Citations (Scopus)

Abstract

With their low thermal conductivity (?), silica aerogels can reduce carbon emissions from heating and cooling demands, but their widespread adoption is limited by the high production cost. A one-pot synthesis for silica aerogel granulate is presented that drastically reduces solvent use, production time, and global warming potential. The inclusion of the hydrophobization agent prior to gelation with a post-gelation activation step, enables a complete production cycle of less than four hours at the lab scale for a solvent use close to the theoretical minimum, and limits the global warming potential. Importantly, the one-pot aerogel granulate retains the exceptional properties associated with silica aerogel, mostly ?=14.4±1.0mWm-1K-1 for the pilot scale materials, about half that of standing air (26mWm-1K-1). The resource-, time-, and cost-effective production will allow silica aerogels to break out of its niche into the mainstream building and industrial insulation markets.
Original languageEnglish
Pages (from-to)4753-4756
Number of pages4
JournalAngewandte Chemie: International Edition
Volume56
Issue number17
DOIs
Publication statusPublished - 1 Jan 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Aerogels
Silicon Dioxide
Silica
Global warming
Gelation
Insulation
Costs
Thermal conductivity
Carbon
Chemical activation
Cooling
Heating
Air

Keywords

  • life-cycle assessment
  • production technology
  • silica aerogels
  • solvents
  • thermal insulation

Cite this

Huber, Lukas ; Zhao, Shanyu ; Malfait, Wim J. ; Vares, Sirje ; Koebel, Matthias M. / Fast and Minimal-Solvent Production of Superinsulating Silica Aerogel Granulate. In: Angewandte Chemie: International Edition. 2017 ; Vol. 56, No. 17. pp. 4753-4756.
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Fast and Minimal-Solvent Production of Superinsulating Silica Aerogel Granulate. / Huber, Lukas; Zhao, Shanyu; Malfait, Wim J.; Vares, Sirje; Koebel, Matthias M.

In: Angewandte Chemie: International Edition, Vol. 56, No. 17, 01.01.2017, p. 4753-4756.

Research output: Contribution to journalArticleScientificpeer-review

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