Product · Materials Science
Product · InnDex 42 · Evidence provided · High specification risk
Aerogel insulation synthesized from construction waste silica via closed-loop supercritical CO₂ extraction.
Keey Aerogel addresses aerogel's prohibitive embodied carbon and cost barriers by extracting silica from demolition waste and synthesizing it into powder or granule form suitable for building envelope and thermal management applications. The process uses supercritical CO₂ and ethanol in a closed loop to recover silica, then produces aerogel with thermal conductivity claimed equivalent to virgin material. Pilot production operates in Alsace since 2022; Series A funding (€18M, Jan 2025) supports a second line in Grand Est.
Keey Aerogel addresses aerogel's prohibitive cost and embodied carbon by recovering silica from construction demolition waste and synthesising it via supercritical CO₂ extraction into powder or granule form, targeting building envelope and thermal management applications where virgin aerogel's performance per millimetre is the design driver but its price or carbon cost has been prohibitive. Pilot production has been running in Alsace since 2022 and Series A funding of €18 million in January 2025 supports a second production line in Grand Est — signals of a viable manufacturing trajectory. The evidentiary gap is significant: one piece of provided evidence but no published EPD, independent LCA, or third-party thermal and mechanical performance data, which means the headline claims — embodied carbon reduction, thermal conductivity parity — are asserted rather than certified. Recovered silica purity will vary with demolition waste stream composition, and without published batch consistency data the specifier cannot confirm that performance is repeatable across supply. The granule and powder form factor is a genuine constraint: monolithic or custom-cut aerogel applications, including blanket insulation or shaped infill panels, may not be addressable with this output. Capital intensity of supercritical CO₂ infrastructure means cost competitiveness depends on production scale that the second line is intended to unlock but has not yet achieved. The right project context is a specification where slim insulation profiles justify aerogel's cost premium and the design team has the appetite to trial an early-market product — insist on third-party performance certification before committing to the building envelope.
Funding and timeline (2015 founding, 2022 pilot, Jan 2025 Series A €18M) confirmed via Tech.eu. Operational status of Alsace facility and second-line plans are credible within venture-scale announcements. However: (1) no named customers disclosed; (2) no Environmental Product Declaration (EPD) or Life Cycle Assessment published; (3) no third-party thermal conductivity, compressive strength, or fire-rating test reports found; (4) waste-feedstock sourcing, purity consistency, and yield rates undisclosed; (5) EV battery thermal runaway claim (5–10 min delay, <100°C at 1,000°C exposure) is physically plausible for aerogel but lacks any independent validation or test certificate. Claims remain vendor-stated; pre-industrial production volume and customer base suggest pilot-stage proof-of-concept rather than market validation.
#circular_economy #aerogel #waste_valorization #thermal_insulation #embodied_carbon #supercritical_co2