CO₂removal sorbent composition with high chemical stability during multiple cycles

摘要

Disclosed herein is a clay-alkali-amine CO2 sorbent composition prepared by integrating a clay substrate, basic alkali salt, and amine liquid. The basic alkali salt is present relative to the clay substrate in a weight ratio of from about 1 part to about 50 parts per 100 parts of the clay substrate. The amine liquid is present relative to a clay-alkali combination in a weight ratio of from about 1 part to about 10 parts per 10 parts of the clay-alkali combination. The clay-alkali-amine C02 sorbent is particularly advantageous for low temperature CO2 removal cycles in a gas stream having a C02 concentration less than around 2000 ppm and an oxygen concentration around 21%, such as air.

主权项

1. A clay-alkali-amine CO2 sorbent composition comprising:
a clay substrate; a first basic alkali salt; and an amine liquid; where the basic alkali salt is supplied at from about 1 part to about 50 parts per 100 parts of the clay substrate by weight, and where the amine liquid is supplied at from about 1 part to about 10 parts per 10 parts of a clay-alkali combination by weight; wherein said clay substrate, said first basic alkali salt and said amine liquid have been integrated to produce the clay-alkali-amine CO2 sorbent.