Nissan Chemical Corporation

Jiahao Liu

Naohiko Suemura

Masatoshi Sugisawa

Hiroaki Sakaida

Takuya Fukuoka

Hirotake Kitagawa

Hikaru Onishi

Takeshi Nakada

Megumi Araki

A silica sol including silica particles exhibiting an average particle diameter distribution having at least two peaks, the silica sol being characterized in that the at least two peaks include the largest peak a, in a range of D50-D90, being present in a range of 35-200 nm, and the largest peak b, in a range of D10-D50, being present in a range from 5 nm to less than 35 nm, and that the surfaces of at least some of silica particles include an organic group bonded directly to a silicon atom via an Si—C bond, and an alkoxy group including a methoxy group or an ethoxy group, wherein the alkoxy group is bonded to the surface of the silica particles at a ratio of 0.6-3.0 alkoxy groups/nm.

Silica sol having particle size distribution and production method therefor

An object is to provide a cage silicate that can be industrially safely and simply produced by using an alkali silicate solution that does not generate alcohol as a Si raw material and using non-toxic quaternary ammonium, and a method for producing the same. The problem is solved by the following cage silicate: A cage silicate consisting of anion component 1 represented by following formula (1), anion component 2 which is a mineral acid ion, cation component 1 represented by following formula (2), and cation component 2 which is an alkali ion, in which, to the mole number in terms of SiO, a ratio of the mole number of water, (HO/SiO), is 0.7 to 30, a ratio of the mole number of alkali ions, (alkali ions/SiO), is 1.0×10to 1.0−10, and a ratio of the mole number of the mineral acid ions, (mineral acid ions/SiO), is 1.0×10to 1.0×10. In formula (2), R represents an alkyl group having 2 to 20 carbon atoms.

Cage silicate and method for producing the same

Provided is a method capable of easily producing a layered silicate in a short time. The problem may be solved by a method of producing a layered silicate, including the following steps (a) and (b):

Method of producing layered silicate, and application thereof in production of silica nanosheet and so on

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Sodegaura, Japan

Jiahao Liu