MCJ has invested in Boston-based Mantel, a company pioneering high-temperature carbon capture technology to help reduce industrial emissions and address the growing energy demand.

Information on the Target

Boston-based Mantel is pioneering a transformative approach to carbon capture, aiming to capture 95% of carbon emissions directly from industrial smokestacks. The company utilizes a novel high-temperature liquid solvent, specifically molten borate, which effectively functions in the high-heat environments typical of industrial processes. This innovative technology addresses the challenges faced by traditional carbon capture systems, which often rely on amine-based solutions that degrade under harsh conditions.

Mantel's unique approach ensures heightened durability against industrial impurities such as sulfur oxides, nitrogen oxides, and ash. Furthermore, by recycling heat within the industrial process rather than producing additional heat for CO₂ release, Mantel significantly reduces energy consumption, thereby cutting operational costs by over 50% when compared to conventional methods.

Industry Overview in the Target’s Specific Country

The energy sector in the United States is undergoing a substantial transformation as it shifts from fossil fuels to renewable sources. This fundamental shift is being driven largely by escalating electricity demand, spurred by the expansion of

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Shell Ventures and Eni Next

invested in

Mantel

in 2025

in a Series A deal

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