# US 2020/0392007 A1 · Method of producing zeolite film

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- Number: US 2020/0392007 A1
- Document ID: US20200392007A1
- Status: Published application
- Kind: A1
- Application number: 16/762,826
- Filed: 2019-07-29
- Published: 2020-12-17
- Earliest claimed: 2019-05-09
- Assignees: Mitsui E&S Machinery Co., Ltd.
- Applicants: Mitsui E&S Machinery Co., Ltd.
- Inventors: Kazuya MAEKAWA
- Web page: https://patentgrep.com/patent/US20200392007A1

## CPC

- B01D 67/0051: {by controlled crystallisation, e,.g. hydrothermal growth}
- C01B 39/023: {Preparation of physical mixtures or intergrowth products of zeolites chosen from group C01B39/04 or two or more of groups C01B39/14 - C01B39/48}
- B01D 69/105: {Support pretreatment}
- B01D 71/0281: {Zeolites}
- B01J 19/0013: {Controlling the temperature of the process}
- B01J 19/305: {Supporting elements therefor, e.g. grids, perforated plates}
- B01D 2323/08: Specific temperatures applied
- B01D 2323/081: Heating
- B01D 2323/10: Specific pressure applied
- B01D 2323/50: Control of the membrane preparation process
- B01J 2219/00051: Controlling the temperature
- B01J 2219/00162: controlling the pressure
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

Provided is a method of producing a zeolite film continuously and efficiently. Zeolite is formed on a surface of a support using a method including: a first step of attaching zeolite fine crystals to a surface of a support; a second step of preparing synthetic gel for growing the fine crystals; a third step of putting the support and the synthetic gel into a reactor and performing hydrothermal synthesis; and a fourth step of cleaning the support subjected to the hydrothermal synthesis, in which in the third step, multiple containers arranged to be movable in a constant-temperature apparatus are each used as the reactor, the temperature and pressure for the hydrothermal synthesis is adjusted by the temperature and pressure in the constant-temperature apparatus, and the reaction time of the hydrothermal synthesis is adjusted by setting the time from when the reactor enters the constant-temperature apparatus to when the reactor exits the constant-temperature apparatus.

## Claims

### Claim 1

A method of producing a zeolite film by forming zeolite on a surface of a support, characterized in that the method comprises the following first to fourth steps:
a first step of attaching zeolite fine crystals to a surface of a support;
a second step of preparing synthetic gel for growing the fine crystals;
a third step of putting the support and the synthetic gel into a reactor and performing hydrothermal synthesis; and
a fourth step of cleaning the support subjected to the hydrothermal synthesis, wherein
in the third step, multiple containers arranged to be movable in a constant-temperature apparatus are each used as the reactor, the temperature and pressure for the hydrothermal synthesis is adjusted by the temperature and pressure in the constant-temperature apparatus, and the reaction time of the hydrothermal synthesis is adjusted by setting the time from when the reactor enters the constant-temperature apparatus to when the reactor exits the constant-temperature apparatus.

### Claim 2 (depends on 1)

The method of producing a zeolite film according to claim 1, characterized in that, in the second step, at least two pieces of preparation equipment are used to prepare the synthetic gel continuously.

### Claim 3 (depends on 1)

The method of producing a zeolite film according to claim 1, characterized in that, in the fourth step, the support having a zeolite film is sequentially taken out of the reactor moved out of the constant-temperature apparatus, and cleaned continuously.

### Claim 4 (depends on 2)

The method of producing a zeolite film according to claim 2, characterized in that, in the fourth step, the support having a zeolite film is sequentially taken out of the reactor moved out of the constant-temperature apparatus, and cleaned continuously.