US 2026/0199873 A1 · SORBENTS FOR CARBON DIOXIDE CAPTURE

Abstract

A sorbent for absorbing carbon dioxide from a gas or a mixture of gases includes: (A) polyalkyleneimine or an alkoxylated polyalkyleneimine; and (B) an inorganic solid support for the polyalkyleneimine or alkoxylated polyalkyleneimine (A), in which the alkoxylated polyalkyleneimine (A) is located on the inorganic solid support (B), and the sorbent includes water in an amount of greater than 2 wt. % based on the weight of the sorbent. A process for preparing such a sorbent is provided herein, as well as uses of the sorbent for capturing carbon dioxide from a mixture of gases, such as air.

Claims32

Dependent claims

A sorbent suitable for absorbing carbon dioxide from a mixture of gases comprising:

(A) a polyalkyleneimine or an alkoxylated polyalkyleneimine;
and
(B) an inorganic solid support for the polyalkyleneimine or alkoxylated polyalkyleneimine (A),
the polyalkyleneimine or alkoxylated polyalkyleneimine (A) being located on the inorganic solid support (B),
wherein the sorbent comprises water in an amount of greater than 2 wt. % based on the total weight of the sorbent.

2 more elements

A process for preparing a sorbent suitable for absorbing carbon dioxide from a mixture of gases, the process comprising:

loading a polyalkyleneimine or alkoxylated polyalkyleneimine (A) onto an inorganic solid support (B), the loading comprising contacting (A) and (B) in the presence of aqueous solvent to provide a resulting loading mixture,
wherein the weight ratio of aqueous solvent to inorganic support (B) in the loading mixture does not exceed 5:1,
the method further comprising obtaining the sorbent from the loading mixture, the sorbent comprising the polyalkyleneimine or alkoxylated polyalkyleneimine (A) loaded onto the inorganic solid support (B).

Dependencies are inferred from the claim text.

Sorbents for carbon dioxide capture

Life of this patent

Sorbents for carbon dioxide capture

Life of this patent

Abstract

Claims32