Climeworks Ag

Alexander Spiteri

Christoph Gebald

Jan André Wurzbacher

Jan Andre Wurzbacher

Aylin Türkan Külür

Tobias Niebel

Angelo Vargas

Mathis Baumann

Valentin Gutknecht

Aylin Türkan KÜLÜR

A process for the production of at least one of amorphous carbon or graphite, preferably of carbon black, from atmospheric air, biogas or flue gas CO2 is given, including at least the following steps: a) isolation of concentrated CO2 of a concentration of at least 50% v/v from atmospheric air, green house air or flue gas preferably by means of a cyclic adsorption/desorption process on amine-functionalized adsorbents; b) conversion of said captured CO2 into a gaseous or liquid saturated or unsaturated hydrocarbon by hydrogenation: c) cracking of said saturated or unsaturated hydrocarbon to at least one of amorphous carbon or graphite, preferably carbon black, wherein the H2 resulting from step c) is at least partially used in the hydrogenation of step b).

Methods for the removal of CO2 from atmospheric air or other CO2-containing gas in order to achieve CO2 emissions reductions or negative CO2 emissions

The invention relates to a method to produce a particulate activated carbon material for capturing COfrom air, wherein the particulate activated carbon is impregnated with alkali carbonate salt such as KCO; and wherein the impregnated particulate activated carbon either has, determined using nitrogen adsorption methods, a pore volume of at least 0.10 cm/g for pore sizes of at least 5 nm and a pore volume of at most 0.30 cm/g for pore sizes of less than 2 nm or is based on a mixture of different alkali carbonate salts, or has a particular pore surface for pore sizes in the range of 2 nm-50 nm.

Materials for the direct capture of carbon dioxide from atmospheric air

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Zurich, Switzerland

Alexander Spiteri