| abstract |
Provided is a water-swelling layered double hydroxide characterized by having an organic sulfonic acid anion (A - ) between layers, and by being represented by the belowmentioned general formula (1): Q z R(OH) 2(z+1) (A - ) (1-y) (X n- ) y/n ·mH 2 O...(1). Here, Q is a divalent metal, R is a trivalent metal, A - is an organic sulfonic acid anion, m is a real number greater than 0, and z is in the range of 1.8≤z≤4.2. X n- is the n-valent anion remaining without A - substitution, n is 1 or 2, y represents the remaining portion of X n- , and 0≤y<0.4. |