Selective sonication-assisted deposition method of inorganic particles and CHA zeolite membranes grown from seeded layers on substrates using the method and plate-like Si-CHA zeolite particles used for seed layer formation and manufacturing method of the same

Patent metadata

Field	Value
Publication number	US-9981852-B2
Application number	US-201414224258-A
Country	US
Kind code	B2
Filing date	Mar 25, 2014
Priority date	Apr 22, 2013
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

Provided is a selective sonication-assisted deposition method of inorganic particles and CHA zeolite membranes grown from seeded uniform layers on substrates using the method and plate-like Si-CHA zeolite particles used for seed layer formation and manufacturing method of the same, in which thin inorganic particles may be selectively deposited on a substrate or on a support, and even a physical interaction between the deposited particles and supports (or substrates) alone allows for obtaining high surface coverage to form a uniform layer, which is critical in reproducible production of membranes of inorganic materials, such as zeolite, by secondary growth.

First claim

What is claimed is:

1. A method of selective sonication-assisted deposition, comprising:
allowing plate shaped inorganic particles, dispersed among cubic inorganic particles, to reach a substrate through a clearance between the substrate and glasses sandwiching the substrate, wherein an amount of the plate-shaped inorganic particles is smaller than an amount of the cubic inorganic particles; and
performing sonication on the plate-shaped inorganic particles which reached the substrate to uniformly deposit the plate-shaped inorganic particles on the substrate.

2. The method of claim 1 , wherein dimensions of the plate-shaped inorganic particles conform to the equations:

0.01
≤

z
x

≤
0.5

0.1
≤

x
y

≤
10

,

where x is an average length of a particle among the plate-shaped inorganic particles, y is an average width of the particle, and z is an average height of the particle.

3. The method of claim 1 , wherein the substrate is plate-shaped or cylindrical.

4. The method of claim 1 , wherein the inorganic particles are CHA particles comprising Si-CHA particles, metal particles, or metal oxides, and the substrate comprises silicon, glass, alumina, stainless steel, polymer, metal, or a metal oxide.

Assignees

• Univ Korea Res & Bus Found

Inventors

• Choi Jungkyu
• Kim Eunjoo
• Cai Wanxi

Classifications

• B01J2229/26

  to stabilize the total catalyst structure · CPC title

• C01B39/48 Primary

  using at least one organic template directing agent · CPC title

• B01J20/3214

  characterised by the method for obtaining this coating or impregnating · CPC title

• B01J20/3238

  containing any type of zeolite · CPC title

• B01J20/18

  Synthetic zeolitic molecular sieves · CPC title