Title:
METHOD FOR MANUFACTURING ULTRA-POROUS NANO-SIO2
Document Type and Number:
WIPO Patent Application WO/2018/019179
Kind Code:
A1
Abstract:
Provided is a method for manufacturing ultra-porous nano-SiO2, comprising: a) adding 10,000 liters of a 15-20% inorganic acid solution in 15,000 liters of a silica sol comprising 40-45% silicon dioxide, then mixing till the silica sol is uniformly distributed within the inorganic acid solution to obtain a sol solution; b) adding the solution sol into a micro-channel reactor, and passing a 30-50% sodium silicate solution and a 20-40% inorganic acid solution through the micro-channel reactor, then adjusting the micro-channel reactor and heating to a temperature of 80-120°C to perform a micro-channel reaction; c) when the micro-channel reaction is complete, then uniformly dispensing a material and using a spin-spraying method to deliver the material to a high-temperature spray drying tower for disintegration and drying where a micro-channel reaction product is atomized and undergoes high temperature contact disintegration and drying to instantaneously form an ultra-porous particle; and d) performing cyclonic classification of the ultra-porous particle, collecting a dust, and obtaining the ultra-porous nano-SiO2. The method has low production costs and simple techniques. The ultra-porous nano-SiO2 has the advantages of excellent activity, adsorption, and dispersiveness, large specific surface area, and large number of internal pores.
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Inventors:
WANG CHENGYUAN (CN)
Application Number:
PCT/CN2017/093772
Publication Date:
February 01, 2018
Filing Date:
July 21, 2017
Export Citation:
Assignee:
WANG CHENGYUAN (CN)
International Classes:
C01B33/18
Foreign References:
| CN106315593A | 2017-01-11 | |||
| CN104370289A | 2015-02-25 | |||
| CN105712359A | 2016-06-29 | |||
| CN102120585A | 2011-07-13 | |||
| CN105236415A | 2016-01-13 | |||
| CN104211072A | 2014-12-17 | |||
| CN102259873A | 2011-11-30 |
Other References:
See also references of EP 3677548A4
Attorney, Agent or Firm:
BEIJING SHENGFANZHIRONG INTELLECTUAL PROPERTY AGENCY CO. LTD (CN)
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