Small-particle-size ultrahigh-specific-area nano silicon oxide

A technology of ultra-high specific surface area and nano-silicon oxide, which is applied in the field of nano-materials, can solve the problems of low specific surface area, large particle size of nano-silicon dioxide particles, uncontrollable particle size and specific surface area, and achieve suppression of violent reactions , Concentration stability and balance, the effect of low reaction initiation temperature

Active Publication Date: 2015-08-12
上饶市安纳拓新材料有限公司
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Problems solved by technology

However, this method still has the defects that the particle size and specific surface area are uncontrollable, and its microstructure, dispersion and porosity cannot be effectively gua

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[0037] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] According to an embodiment of the present invention, the nano-silica with a small particle size and an ultra-high specific surface area can have a particle size of 5-10nm and a specific surface area of ​​600-1160m. 2 / g, can be used in storage batteries, catalyst deactivation, high-end rubber, coatings, cosmetics, plastics, pigments, etc.

[0039] The preparation method of nano-silica in this embo...

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Abstract

The invention discloses a small-particle-size ultrahigh-specific-area nano silicon oxide which is prepared by the following steps: adding metered inorganic acid, water glass, a nucleator, a dispersing agent and pure water into a reaction vessel, and emulsifying and stirring by high-speed shearing to perform primary reaction; added metered primary reaction product, inorganic acid and a nucleator into a reaction vessel, stirring at low speed to perform secondary reaction; regulating the pH value of the reaction product after secondary reaction to less than 3, and carrying out aging reaction under such conditions to stably form the particles; and carrying out deacidifying-desalting washing on the product under strong acid conditions to obtain the small-particle-size ultrahigh-specific-area nano silicon oxide. The particle size of the nano silicon oxide can reach 5-10nm, and the specific area is up to 600-1160 m<2>/g. The nano silicon oxide has small particle size and ultrahigh specific area, and thus, has excellent effects when being applied to multiple fields.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and more specifically relates to a kind of nano silicon oxide. Background technique [0002] Nanomaterials refer to solid materials composed of extremely fine grains with characteristic dimensions on the order of nanometers (1-100nm). Because the scale of this kind of material is in the junction area between atomic clusters and macroscopic objects, it has surface effect, small size effect, quantum size effect and macroscopic quantum tunneling effect. It has special properties that traditional materials and devices do not have. [0003] Nano-silica (also called nano-silica) is a typical nano-material with a wide range of sources, low price, non-toxic, odorless, less environmental pollution, and excellent stability, thickening and thixotropy , so it has a wide range of applications. Nano silica has small particle size, large specific surface area, strong surface adsorption force, lar...

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Application Information

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IPC IPC(8): C01B33/12B82Y40/00
Inventor 徐翠云李翔
Owner 上饶市安纳拓新材料有限公司
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