AMINO COMPOUND-SUPPORTING POROUS SUBSTRATE AND ACIDIC GAS ABSORBENT
An amino compound-supported porous substrate includes: a porous substrate including at least macropores; and an amino compound supported in at least some pores of porous substrate. Porous substrate has a total pore volume per unit volume of the porous substrate of 0.55 mL/mL or more and 0.95 mL/mL or less, as determined by mercury porosimetry. Porous substrate preferably has a skeleton containing an element selected from the group consisting of silicon, aluminum, tin, cerium, titanium, and zirconium.
1 . An amino compound-supported porous substrate comprising:
a porous substrate including at least macropores; and
an amino compound supported in at least some pores of the porous substrate,
wherein the porous substrate has a total pore volume per unit volume of the porous substrate of 0.55 mL/mL or more and 0.95 mL/mL or less, as determined by mercury porosimetry.
2 . The amino compound-supported porous substrate according to claim 1 ,
wherein the porous substrate has a mode of pore size distribution of the macropores of 0.05 μm or more and 3.0 μm or less, as determined in a pore size range of 50 nm or more and 500 μm or less by mercury porosimetry.
3 . The amino compound-supported porous substrate according to claim 1 ,
wherein the porous substrate has a skeleton containing an element selected from the group consisting of silicon, aluminum, tin, cerium, titanium, and zirconium.
4 . The amino compound-supported porous substrate according to claim 1 ,
wherein the amino compound-supported porous substrate includes an amino group in an amount, per unit volume of the amino compound-supported porous substrate, of 1.0 mmol/mL or more and 30.0 mmol/mL or less.
5 . The amino compound-supported porous substrate according to claim 1 ,
wherein the amino compound is at least one selected from the group consisting of a polyamine, a primary amine, a secondary amine, a tertiary amine, a quaternary ammonium, an aromatic amine, and a polyimine.
6 . The amino compound-supported porous substrate according to claim 1 ,
wherein the amino compound-supported porous substrate has a total pore volume, per unit volume of the amino compound-supported porous substrate, of 0.05 mL/mL or more and 0.80 mL/mL or less, as determined by mercury porosimetry.
7 . The amino compound-supported porous substrate according to claim 1 ,
wherein the porous substrate further includes mesopores, and
the porous substrate has a co-continuous structure composed of: a skeleton including the mesopores formed therein; and the macropores.
8 . The amino compound-supported porous substrate according to claim 7 ,
wherein the porous substrate has a ratio of a mode of pore size distribution of the macropores to a mode of pore size distribution of the mesopores of 5 or more and 200 or less.
9 . The amino compound-supported porous substrate according to claim 1 ,
wherein the porous substrate is a molded article.
10 . The amino compound-supported porous substrate according to claim 9 ,
wherein the molded article is a columnar body and has an average diameter of 1.5 mm or more and 20 mm or less.
11 . The amino compound-supported porous substrate according to claim 9 ,
wherein the amino compound-supported porous substrate has a compression strength of 5 N or more.
12 . An acid gas adsorbent material comprising the amino compound-supported porous substrate according to claim 1 .