Carbon monoxide separation technology

Abstract

5 The invention provides a method for separating carbon monoxide (11) from a gaseous mixture (10) using a sorbent (40) having a specific surface area (As) of 210 m2 per gram, wherein the sorbent (40) comprises 0.001 — 25 mg / m2 of a first element (41) comprising an alkali metal or alkaline earth metal, and combinations thereof, and wherein the method comprises: (A) a sorption stage (58) comprising exposing the sorbent (40) to the gaseous mixture (10) at a 10 sorption temperature Ts selected from the range of 250 — 700 °C to provide a loaded sorbent (48); and (B) a desorption stage (59) comprising exposing the loaded sorbent (48) to a desorption gas (20) at a desorption temperature Td selected from the range of 250 — 700 °C to provide a regenerated sorbent (49) and a gaseous product (30), wherein the desorption gas (20) comprises H2 (21) or water vapor (22).