Exhibition at Carbon Capture Technology Expo Europe
NGK exhibits ceramic substrates for DAC systems and Ceramic membrane capable of gas separation and dehydration

Direct Air Capture (DAC) is a technology for capturing CO₂ contained in the atmosphere via direct adsorption or absorption. Projections suggest DAC will absorb approximately 1 billion tons^* of CO₂ from the atmosphere by the year 2050. DAC has entered the spotlight as a technology with the potential to help achieve carbon neutrality. Since the concentration of atmospheric CO₂ is approximately 0.04%—extremely low—large volumes of air must be treated efficiently to adsorb or absorb significant amounts of carbon.
A honeycomb structure substrate for DAC currently being developed by NGK offers compact dimensions, large surface area, and low-pressure loss (ability to efficiently treat large volumes of air), which are required for DAC contactor, by applying the ceramic honeycomb structure technology cultivated through the development of ceramic substrates for automotive catalytic converters for decades. Through its unique ceramic technology, NGK aim to diversify into the DAC market by providing ceramic products for DAC systems.

• *Source: IEA Report

Sub-nano ceramic membranes are ceramic separation membranes (ceramic filters) that feature especially fine sub-nano^* class pores. They are capable of separation at the molecular level. NGK has developed various sub-nano ceramic membranes capable of separating specific gases or liquids from gas-liquid mixtures.
Sub-nanoceramic membranes are expected to be applied to the following H₂-related applications.

These products are instrumental to establishing innovative separation processes that dramatically reduce both costs and energy consumption.

• *Sub-nano: less than 1 nm (nanometer); 1 nm = 0.000001 mm.