Abstract: A device for the separation of a carbon dioxide of a gas stream by using a bed of particulate adsorber particles contained in a sorbent particle volume, comprising at least two inlet channels and at least two outlet channels in said sorbent particle volume, the inlet channels and outlet channels mutually intertwining at least partly to form a nested structure and being arranged parallel to each other. The inlet channels and outlet channels are alternatingly arranged in both lateral dimensions so that the sorbent particle volume is confined by the interspace defined by adjacent side walls of inlet and outlet channels. Further, the sorbent particle volume surrounds the channels circumferentially.

Abstract: The invention describes a method to regenerate the carbon capture capacity of amino based sorbents used for carbon capture, after they have lost partially or totally their carbon dioxide capture capacity due to oxidation during said carbon capture process.

Abstract: Method for the production of amine functionalized polyacrylonitrile (PAN) fibres, preferably for direct air capture, wherein pristine polyacrylonitrile fibres are added to a solution of tetraethylenepentamine (TEPA) or pentaethylenehexamine (PEHA) at a concentration of tetraethylenepentamine (TEPA) or pentaethylenehexamine (PEHA) of at least 80% v/v, and wherein the mixture is kept, preferably stirred, at a temperature in the range of 120-160° C. for a time span of at least 4 hours, as well as uses of corresponding fibres.

Abstract: Method for the preparation of a sorbent material and for use of such a material for separating gaseous carbon dioxide from a gas mixture, preferably for direct air capture, using a temperature, vacuum, or temperature/vacuum swing process, comprising primary amine moieties immobilized on a solid support, wherein the primary amine moieties, in the ?-carbon position, are substituted by one hydrogen and one non-hydrogen substituent, wherein the sorbent material is in the form of a monolith, a layer, fibres, or particles, wherein the non-hydrogen substituent is selected from the group consisting of alkyl, alkenyl, arylalkyl, and wherein the solid support of the sorbent material is a porous material. Starting from a precursor of said sorbent material comprising one or multiple keto-groups, said one or multiple keto groups are converted into said primary amine moieties through a reductive amination.

Abstract: Separation unit (1) for separating at least one gaseous component from a gas mixture, or arrangement of such separation units, wherein it has at least one circumferential wall element(s) (5), the circumferential wall element(s) defining an upstream opening (31) and an opposed downstream opening (32) of at least one cavity (3) containing at least one gas adsorption structure (4) for adsorbing the gaseous component under ambient pressure and/or temperature conditions, or an array of at least two such cavities (3). The separation unit (1) has a pair of opposing sliding doors (12) for sealing the openings of a cavity (3) and preferably allowing for evacuating a cavity (3), and the pair of opposing sliding doors (12) can be shifted in a direction essentially parallel to the plane of the respective sliding door (12) and to allow for flow through of gas mixture through the gas adsorption structure (4).

Abstract: Separation station (1) with a plurality of separation units (34) for separating carbon dioxide and/or water vapour from ambient air, wherein each separation unit (34) comprises at least one contiguous and sealing circumferential wall circumferentially enclosing at least one cavity (24), said at least one contiguous and sealing circumferential wall defining an upstream opening (35) and an opposed downstream opening (36), said cavity (24) containing at least one gas adsorption structure (25) for adsorbing said at least one gaseous component, preferably under ambient pressure and/or temperature conditions, wherein said plurality of separation units (34) is arranged in at least one essentially vertical collector wall structure (2), laterally enclosing one single common separation station cavity (21), and wherein to the upper side, said separation station cavity (21) is covered and closed by at least one cover unit (1) with at least one air propelling device (10).

Abstract: Separation unit (1) for separating at least one gaseous component from a gas mixture, or arrangement of such separation units, wherein it comprises at least one circumferential wall element(s) (5), said circumferential wall element(s) defining an upstream opening (31) and an opposed downstream opening (32) of at least one cavity (3) containing at least one gas adsorption structure (4) for adsorbing said gaseous component under ambient pressure and/or temperature conditions, or an array of at least two such cavities (3), wherein the separation unit (1) comprises a pair of opposing sliding doors (12) for sealing the openings of a cavity (3) and preferably allowing for evacuating a cavity (3), and wherein the pair of opposing sliding doors (12) can be shifted in a direction essentially parallel to the plane of the respective sliding door (12) and to allow for flow through of gas mixture through the gas adsorption structure (4).

Abstract: A method for separating gaseous carbon dioxide from air is proposed by cyclic adsorption/desorption using a sorbent. The method includes the following sequential and in this sequence repeating steps: (a) contacting air with the sorbent to allow gaseous carbon dioxide to adsorb on the sorbent under ambient atmospheric pressure and temperature conditions; (b) isolating the sorbent from the flow-through; (c) inducing an increase of the temperature of the sorbent; (d) extracting the desorbed gaseous carbon dioxide from the unit and separating gaseous carbon dioxide from steam/water; and (e) bringing the sorbent to ambient atmospheric temperature and pressure conditions. The sorbent is a water retaining and/or porous support which before use in the cyclic process has been impregnated or wetted with a solution of a secondary amine compound and the sorbent is loaded by said secondary amine compound by at least 5% by weight.

Abstract: Separation station (1) with a plurality of separation units (34) for separating carbon dioxide and/or water vapour from ambient air, wherein each separation unit (34) comprises at least one contiguous and sealing circumferential wall circumferentially enclosing at least one cavity (24), said at least one contiguous and sealing circumferential wall defining an upstream opening (35) and an opposed downstream opening (36), said cavity (24) containing at least one gas adsorption structure (25) for adsorbing said at least one gaseous component, preferably under ambient pressure and/or temperature conditions, wherein said plurality of separation units (34) is arranged in at least one essentially vertical collector wall structure (2), laterally enclosing one single common separation station cavity (21), and wherein to the upper side, said separation station cavity (21) is covered and closed by at least one cover unit (1) with at least one air propelling device (10).

Abstract: The invention relates to a process for the preparation of homogeneous hybrid inorganic-organic materials comprising dissolving and/or suspending and/or dispersing an inorganic and an organic material in a ionic liquid solvent to form an ionic solution and precipitating the inorganic and organic materials together to form a hybrid inorganic-organic precipitate material. The invention further relates to the homogeneous hybrid inorganic-organic precipitate material obtainable or obtained by the process, in particular carbon alumina hybrid material, to shaped articles like fibers and particles comprising said hybrid material and the use thereof for the manufacture of—or as a component in—catalysts, sorbents, building and construction materials, packaging materials, paper materials, coatings and polymers.

Abstract: A method for separating gaseous carbon dioxide from a gas mixture, preferably from at least one of ambient atmospheric air (1), flue gas and biogas, by cyclic adsorption/desorption using a sorbent material (3), wherein the method comprises at least the following sequential and in this sequence repeating steps (a)-(e): (a) contacting said gas mixture (1) with the sorbent material (3) to allow gaseous carbon dioxide to adsorb; (b) isolating said sorbent material (3) from said flow-through; (c) inducing an increase of the temperature of the sorbent material (3); (d) extracting at least the desorbed gaseous carbon dioxide from the unit (8) and separating gaseous carbon dioxide from steam in or downstream of the unit (8); (e) bringing the sorbent material (3) to ambient atmospheric conditions; wherein said sorbent material (3) comprises primary and/or secondary amine moieties immobilized on a solid support, wherein the amine moieties, in the ?-carbon position, are substituted by one hydrogen and one non-hydrog

Abstract: 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).

Abstract: Method for separating gaseous carbon dioxide from air, in particular from ambient atmospheric air (1), by cyclic adsorption/desorption using a sorbent material (3), wherein said sorbent material (3) is a solid inorganic or organic, non-polymeric or polymeric support material functionalized on the surface with amino functionalities capable of reversibly binding carbon dioxide, with a specific BET surface area, preferably measured by nitrogen adsorption, in the range of 1-20 m2/g.

Abstract: A DAC method as well as a unit containing an adsorber structure having an array of adsorber elements with a support layer and on both sides thereof a sorbent layer (1, 2), wherein the adsorber elements are parallel and spaced apart forming parallel fluid passages for flow-through of ambient atmospheric air and steam. The method involves the following sequential and repeating steps: (a) adsorption by flow-through; (b) isolating the sorbent; (c) injecting a stream of saturated steam through the parallel fluid passages and inducing an increase of the temperature; (d) extracting desorbed carbon dioxide from the unit and separating it from steam; (e) bringing the sorbent material to ambient temperature conditions wherein in step (a) the speed of the air is in the range of 2-8 m/s, and wherein at least in step (d) the speed of the steam is at least 0.2 m/s.

Abstract: A method for separating gaseous carbon dioxide from a gas mixture by cyclic adsorption/desorption using a sorbent material adsorbing said gaseous carbon dioxide, wherein the method comprises the following sequential and in this sequence repeating steps: (a) an adsorption step; (b) and isolating step; (c) injecting a stream of saturated or superheated steam and thereby inducing an increase in internal pressure of the reactor unit and an increase of the temperature of the sorbent from ambient atmospheric temperature to a temperature between 60 and 110° C.

Abstract: A method for separating gaseous carbon dioxide from a gas mixture having the following steps: (a) contacting the gas mixture with sorbent material to allow gaseous carbon dioxide to adsorb under ambient conditions, using a speed of the adsorption gas flow; (b0) isolating the sorbent with adsorbed carbon dioxide from said flow-through of gas mixture; (b1) injecting a stream of saturated steam at ambient conditions and inducing an increase of the temperature of the sorbent to a temperature between 60 and 110° C., (b2,b3) extracting at least the desorbed gaseous carbon dioxide while still injecting or circulating steam at ambient atmospheric pressure conditions into the unit; and (c) bringing the sorbent material to ambient atmospheric temperature conditions. The speed of steam flow through the unit in step (b1) or on average in steps (b1)-(b3) is in the range of 0.5-10 times the speed of the adsorption in step (a).

Abstract: The invention relates to a method to produce a particulate activated carbon material for capturing CO2 from air, wherein the particulate activated carbon is impregnated with alkali carbonate salt such as K2CO3; and wherein the impregnated particulate activated carbon either has, determined using nitrogen adsorption methods, a pore volume of at least 0.10 cm3/g for pore sizes of at least 5 nm and a pore volume of at most 0.30 cm3/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.

Abstract: A method for separating carbon dioxide and water from a gas mixture by cyclic adsorption/desorption, using a unit containing an adsorber structure, comprising the following repeating steps: (a) contacting said mixture with sorbent material; (b) at least one of evacuating said unit and heating said sorbent material and extracting the gaseous carbon dioxide and water vapour and separating gaseous carbon dioxide from water vapour; (c) cooling the adsorber structure and re-pressurisation; wherein (i) in step (c) the heat released is stored in a first heat storage device; (ii) during step (b) the sensible and latent heat of gaseous carbon dioxide and water vapour as product gases is stored in second heat storage device; and (iii) during step (b) the heat required for heating said sorbent material is supplied from heat recovered in at least one of step actions (i) and (ii) of previous sequence(s).

Abstract: A device for the separation of a carbon dioxide of a gas stream by using a bed of particulate adsorber particles contained in a sorbent particle volume, comprising at least two inlet channels and at least two outlet channels in said sorbent particle volume, the inlet channels and outlet channels mutually intertwining at least partly to form a nested structure and being arranged parallel to each other. The inlet channels and outlet channels are alternatingly arranged in both lateral dimensions so that the sorbent particle volume is confined by the interspace defined by adjacent side walls of inlet and outlet channels. Further, the sorbent particle volume surrounds the channels circumferentially.

Abstract: Separation unit (1) for separating at least one gaseous component from a gas mixture, or arrangement of such separation units, wherein it comprises at least one circumferential wall element(s) (5), said circumferential wall element(s) defining an upstream opening (31) and an opposed downstream opening (32) of at least one cavity (3) containing at least one gas adsorption structure (4) for adsorbing said gaseous component under ambient pressure and/or temperature conditions, or an array of at least two such cavities (3), wherein the separation unit (1) comprises a pair of opposing sliding doors (12) for sealing the openings of a cavity (3) and preferably allowing for evacuating a cavity (3), and wherein the pair of opposing sliding doors (12) can be shifted in a direction essentially parallel to the plane of the respective sliding door (12) and to allow for flow through of gas mixture through the gas adsorption structure (4).