# US 2017/0282153 A1 · Method for manufacturing activated carbon

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- Number: US 2017/0282153 A1
- Document ID: US20170282153A1
- Status: Published application
- Kind: A1
- Application number: 15/248,970
- Filed: 2016-08-26
- Published: 2017-10-05
- Earliest claimed: 2016-04-05
- Assignees: Hyundai Motor Company; lnha-lndustry Partnership Institute
- Applicants: Hyundai Motor Company; lnha-lndustry Partnership Institute
- Inventors: Shin Tae BAE; Young Jung HEO; Soo Jin PARK
- Web page: https://patentgrep.com/patent/US20170282153A1

## CPC

- B01J 20/20: comprising free carbon; comprising carbon obtained by carbonising processes
- B01D 53/02: by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)}
- B01D 53/0407: {Constructional details of adsorbing systems}
- B01J 20/06: comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J 20/3021: {Milling, crushing or grinding}
- B01J 20/3064: {Addition of pore forming agents, e.g. pore inducing or porogenic agents}
- B01J 20/3078: {Thermal treatment, e.g. calcining or pyrolizing}
- B01J 20/3204: {Inorganic carriers, supports or substrates}
- B01J 20/3236: {containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts}
- B60H 3/06: Filtering
- C01B 32/348: Metallic compounds
- C01B 32/354: After-treatment
- B01D 2253/102: Carbon
- B01D 2253/25: Coated, impregnated or composite adsorbents
- B01D 2257/504: Carbon dioxide
- B01D 2259/4566: for use in transportation means
- B60H 2003/0691: {Adsorption filters, e.g. activated carbon}
- Y02C 20/10: of nitrous oxide (N2O)
- Y02C 20/40: of CO2
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- 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)
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- Y02C: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]

## Abstract

An activated carbon manufacturing method may include preparing activated carbon precursors, carbonizing the activated carbon precursors by performing a heat treatment on the activated carbon precursors, equalizing the activated carbon precursors carbonized, in the carbonizing, by grinding the activated carbon precursors, activating the activated carbon precursors by inserting an oxidizing agent and distilled water into the equalized activated carbon precursors and performing a heat treatment on the activated carbon precursors, and introducing metal oxide particles into the activated carbon precursors by mixing the activated precursors, a metal salt, and a reducing agent in a solvent to perform reaction on the activated carbon precursors.

## Claims

### Claim 1

An activated carbon manufacturing method comprising:
preparing activated carbon precursors;
carbonizing the activated carbon precursors by performing a heat treatment on the activated carbon precursors;
equalizing the activated carbon precursors carbonized, in the carbonizing, by grinding the activated carbon precursors;
activating the activated carbon precursors by inserting an oxidizing agent and distilled water into the equalized activated carbon precursors and performing a heat treatment on the activated carbon precursors; and
introducing metal oxide particles into the activated carbon precursors by mixing the activated precursors, a metal salt, and a reducing agent in a solvent to perform reaction on the activated carbon precursors.

### Claim 2 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein the oxidizing agent is selected from the group including H2O2, HNO3, O3, N2O, H2SO4, F2, Cl2, and a combination thereof, in the activating.

### Claim 3 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein a volume of the oxidizing agent is in a range of 10% volume to 50% volume of a total of 100% volume of the oxidizing agent and the distilled water, in the activating.

### Claim 4 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein the activating is performed at a temperature in a range of 700° C. to 1000° C.

### Claim 5 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein the activating is performed while injecting a mixture of the oxidizing agent and the distilled water into the activated carbon precursors at a speed in a range of 1 ml/hr to 100 ml/hr.

### Claim 6 (depends on 5)

The activated carbon manufacturing method of claim 5, wherein the activating is performed under a pressure in a range of 0 bar to 5 bar.

### Claim 7 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein the activating is performed for a time period in a range of 1 hr to 5 hrs.

### Claim 8 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein, in the introducing of the metal oxide particles, the metal salt is selected from the group including nickel, manganese, cobalt, zinc, yttrium, cooper, iron, and a combination of at least two thereof.

### Claim 9 (depends on 8)

The activated carbon manufacturing method of claim 8, wherein the metal salt is selected from the group including manganese nitrate, magnesium nitrate, nickel sulfate, cupper nitrate, and a combination thereof.

### Claim 10 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein the introducing of the metal oxide particles is performed at a temperature in a range of 80° C. to 120° C.

### Claim 11 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein, in the introducing of the metal oxide particles, the reducing agent is selected from the group including formaldehyde (HCHO), sodium borohydroride, lithium aluminum hydride, and a mixture of at least two thereof.

### Claim 12 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein, in the introducing of the metal oxide particles, a mixing ratio of the metal salt is in a range of 0.1% weight to 20% weight of a mixing ratio of 100% weight of the activated carbon precursors.

### Claim 13 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein, in the introducing of the nitrogen-based functional group, the solvent comprises a hydroxyl group (—OH).

### Claim 14 (depends on 13)

The activated carbon manufacturing method of claim 13, wherein the solvent is selected from the group including ethanol, ethyleneglycol, diethyleneglycol, polyethyleneglycol, 1,2-propanediol, dodacanediol, and a combination thereof.

### Claim 15 (depends on 1)

The activated carbon manufacturing method of claim 1, further comprising selecting the equalized activated carbon precursors using a sieve having a size in a range of 100 μm to 250 μm, after the equalizing.

### Claim 16 (depends on 1)

The activated carbon manufacturing method of claim 1, further comprising performing a heat treatment on the activated carbon precursors in air in a temperature in a range of 250° C. to 350° C., after the introducing of the metal oxide particles.

### Claim 17 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein the equalizing is performed using a ball mill, and a particle size of a ball used for the ball mill is in a range of 1 mm to 20 mm.

### Claim 18 (depends on 17)

The activated carbon manufacturing method of claim 17, wherein a volume of the activated carbon precursor is in a range of 0.1% volume to 40% volume of a total of 100% volume of the activated carbon precursor and the ball mill, in the equalizing.

### Claim 19 (depends on 17)

The activated carbon manufacturing method of claim 17, wherein a processing speed for the ball mill is in a range of 100 rpm to 500 rpm, in the equalizing.

### Claim 20 (depends on 17)

The activated carbon manufacturing method of claim 17, wherein a processing time period for the ball mill is in a range of 30 min to 5 hrs, in the equalizing.

### Claim 21 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein the carbonizing is performed at a temperature in a range of 700° C. to 1000° C.

### Claim 22 (depends on 1)

The activated carbon manufacturing method of claim 1, wherein, in the preparing of the activated carbon precursor, the activated carbon precursors are selected from the group including starch, coconut husks, citrus peel, coffee grounds, bamboo stems, and a combination thereof.