US 20140021404Al  c19)  United States  c12)  Patent Application Publication  Iyi et al.  c10)  Pub. No.: US 2014/0021404 Al  (43)  Pub. Date:  Jan. 23, 2014  (54)  METHOD FOR PRODUCING  ANION-EXCHANGING LAYERED DOUBLE  HYDROXIDE AND METHOD FOR  SUBSTITUTING CARBONATE ION OF  LAYERED DOUBLE HYDROXIDE  (75)  Inventors:  Nobuo Iyi,  Ibaraki (JP);  Hirohisa  Yamada,  Ibaraki (JP);  Takayoshi  Sasaki,  Ibaraki (JP)  (73)  Assignee:  NATIONAL INSTITUTE FOR  MATERIALS SCIENCE,  Tsukuba-shi,  Ibaraki (JP)  (21)  Appl. No.:  13/982,153  (22)  PCT Filed:  Jan.18,2012  (52)  U.S. Cl.  CPC .......................................  B0JJ 41110  (2013.01)  USPC .. .. ... ... ... ... ... .. ... ... ... ... .. ... ... ... ... ... .. ... ...  252/184  (51)  Int. Cl.  B0JJ41/10  (2006.01)  (30)  Foreign Application Priority Data  (57)  ABSTRACT  Publication Classification  A method for producing an anion-exchanging LDH using a  carbonate ion-type layered double hydroxide represented by  general formula  Qa  T(OH)zCCO$_{3 }$ 2 -) 0 5 _ $_{61}$iX-)$_{6}$ .nH$_{2}$O (where  1.8sas4.2, z=2(a+l), 0sb<0.5, 0sns5, Q represents divalent  metal, T represents trivalent metal, and  x- is an element or  atom group that turns to monovalent anion) as a starting  material, with value b increased at least to 0.5 and a maximum  of 1, wherein the carbonate ion-type layered hydroxide is  made to contact an alcoholic solution containing an acidic  compound(MXm) (wherem=l, 2, or3; whenm=l, Mis Hor  NRR’R".H, withR, R’, andR" being Hor organic group; and  when m=2 or 3, M is a metal salt, namely a divalent or  trivalent metal).  Jan.27,2011  Aug. 31, 2011  (JP) .................................. 2011014710  (JP) .................................. 2011188138  (86)  PCT No.:  PCT  I  JP2012/050976  § 371 (c)(l),  (2), ( 4) Date:  Oct. 8, 2013  Acidic compound  Organic solvent  Room temperature; 0.5 to 2 hours  Carbonate ion-type LDH  Anion-exchanging LOH 