Synthesis of imogolite: a tubular aluminium silicate polymer

Cation and Anion Retention by Natural and Synthetic Allophane and Imogolite

“…Synthetic imogolite (Farmer et aL, 1977a;Farmer and Fraser, 1978) was similarly prepared in large volumes. Hydrolyzed tetraethyl silicate (0.004 M) and aluminum perchlorate (0.0072 M) were partially neutralized to pH 5 with 1 M NaOH.…”

Flow-Orientation of Internal Structure and Anisotropic Properties on Hydrogels Consisted of Imogolite Hollow Nanofibers

“…IG is a single-walled aluminosilicate-type clay hollow nanofiber with the formula (HO)3Al2O3SiOH [23][24][25][26][27][28] having external and internal diameters of~2 and 1 nm, respectively ; in contrast, the lengths of IG range from several tens of nanometers to several µm. The outer and inner surfaces of IG are covered with aluminol and silanol groups, respectively, on which (de)protonation equilibrium processes such as [ known to occur.…”

Synthesis and Characterization of Fe-Imogolite as an Oxidation Catalyst

“…There are three peaks at 2= 5.1°, 11° and 15.6° in the XRD profile of natural imogolite and at 2= 4.6°, 9.6° and 14.3° in that of synthetic imogolite. The difference in peak position is due to the difference in the diameter of a tube of a natural and synthetic imogolite [7,24]. The diameter of 1.8 -2.2 nm in natural imogolite [1] and 2.7 -3.2 nm in synthetic imogolite [25] were reported.…”

“…Farmer et al reported [24] the synthesis method of imogolite in 1977. Imogolite was synthesized from a dilute solution containing of hydroxyaluminum cations (2.4 mmol L -1 ) and orthosilicic acid (1.4 mmol L -1 ).…”