Search

US-12616954-B2 - Functional material, an apparatus for purification of a fluid, an apparatus for a containing a liquid, a pulverized product and method of manufacturing same

US12616954B2US 12616954 B2US12616954 B2US 12616954B2US-12616954-B2

Abstract

A functional material is provided and includes a porous carbon material derived from a plant-derived material as a raw material, wherein a bulk density of the porous carbon material is in a range of 0.2 grams/cm 3 to 0.4 grams/cm 3 , a value of a cumulative pore volume in a range of 0.05 μm to 5 μm in pore size of the porous carbon material based on a mercury press-in method is in a range of 0.4 cm 3 per 1 gram of the porous carbon material to 1.2 cm 3 per 1 gram of the porous carbon material, and a value of a pore volume of the porous carbon material based on an MP method is in a range of 0.04 cm 3 per 1 cm 3 of the porous carbon material to 0.09 cm 3 per 1 cm 3 of the porous carbon material.

Inventors

  • Shun Yamanoi
  • Seiichiro Tabata
  • Hironori Iida

Assignees

  • SONY CORPORATION

Dates

Publication Date
20260505
Application Date
20201211
Priority Date
20160223

Claims (9)

  1. 1 . A method of manufacturing a pulverized product, the method comprising: preparing a porous carbon material including solidifying a plant-derived material to form a solidified porous carbon material, wherein the solidified porous carbon material is a cylindrical shape, a firewood bar shape, a coil shape or a granular shape; heating the solidified porous carbon material at a temperature ranging from 400° C. to 1400° C.; and after heating the solidified porous carbon material, treating the solidified porous carbon material using an acid or an alkali, wherein a value of a pore volume of the porous carbon material based on an MP method is in a range of 0.04 cm 3 per 1 cm 3 to 0.09 cm 3 per 1 cm 3 of the porous carbon material, wherein a value of a cumulative pore volume in a range of 0.05 μm to 5 μm in pore size of the porous carbon material based on a mercury press-in method is in a range of 0.4 cm 3 per 1 gram of the porous carbon material to 1.2 cm 3 per 1 gram of the porous carbon material; processing the porous carbon material to provide a pulverized form of the porous carbon material; and processing the pulverized form of the porous carbon material to form the pulverized product.
  2. 2 . The method according to claim 1 , wherein a bulk density of the porous carbon material is in a range of 0.2 grams/cm 3 to 0.4 grams/cm 3 .
  3. 3 . The method according to claim 1 , wherein a value of a pore volume of the porous carbon material based on an MP method is in a range of 0.04 cm 3 per 1 cm 3 of the porous carbon material to 0.09 cm 3 per 1 cm 3 of the porous carbon material.
  4. 4 . The method according to claim 1 , wherein the solidified porous carbon material is treated using the acid.
  5. 5 . The method according to claim 1 , wherein the solidified porous carbon material is treated using the alkali.
  6. 6 . A method for producing a pulverized product of a solidified porous carbon material, the method comprising: pulverizing the solidified porous carbon material formed by solidifying a plant-derived material, wherein the solidified porous carbon material includes a pore volume based on a MP method ranging from 0.040 cm 3 to 0.1 cm 3 per 1 cm 3 of the solidified porous carbon material, and wherein a cumulative pore volume is in a range of 0.4 cm 3 to 1.2 cm 3 per 1 gram of the solidified porous carbon material based on a mercury press-in method for pore size of 0.05 um to 5 um.
  7. 7 . The method according to claim 6 , wherein a bulk density of the solidified porous carbon material is in a range of 0.2 grams/cm 3 to 0.4 grams/cm 3 .
  8. 8 . The method according to claim 6 , wherein the solidified material is formed by solidifying the plant-derived material to form a solidified material and then heating the solidified material at a temperature ranging from 400° C. to 1400° C.
  9. 9 . The method according to claim 8 , wherein, after heating, the solidified material is treated using an acid or an alkali.

Description

CROSS REFERENCES TO RELATED APPLICATIONS The present application is a continuation of U.S. patent application Ser. No. 16/070,924, filed Jul. 18, 2018, which application claims the benefit of International Application No. PCT/JP2017/006363, filed Feb. 21, 2017, which claims priority to Japanese Application Nos. 2016-031637, filed Feb. 23, 2016, and 2017-027603, filed Feb. 17, 2017, the disclosures of which are incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to a solidified porous carbon material and a method of manufacturing the same. BACKGROUND A porous carbon material using a plant-derived material as a raw material, and a method of manufacturing the same, for example, are known from Japanese Patent No. 4618308. The method disclosed in this patent gazette is a method of manufacturing a porous carbon material in which a value of a specific surface area by a nitrogen BET method is equal to or larger than 10 m2/gram, and a volume of a pore by a BJH method and an MP method is equal to or larger than 0.1 cm3/gram. In this method, after the plant-derived material is carbonized at temperature of 800° C. to 1400° C., and the resulting carbonized plant-derived material is treated with an acid or an alkali, thereby removing silicon components in the plant-derived material after the carbonization. PATENT LITERATURE Japanese Patent No. 4618308 SUMMARY The method of manufacturing the porous carbon material disclosed in the patent gazette described above is the excellent manufacturing method. However, since a sort of powdered chaff, for example, is used as the plant-derived material (raw material), the transport and the handling of the raw material and the porous carbon material become troublesome in some cases. In addition, since a value of a bulk density of the raw material is low, the treatment of the carbonization, and the treatment with the acid or alkali cannot be effectively carried out in some cases. In addition, as a matter of convenience of a manufacturing system, an amount of one treatment at the time of the manufacture is limited in some cases. Therefore, it is an object of the present disclosure to provide a porous carbon material and a method of manufacturing the same in each of which transport and handling of a raw material and the porous carbon material, a treatment of carbonization, and a treatment with an acid or an alkali are caused to be more readily carried out. SOLUTION TO PROBLEMS A solidified porous carbon material of the present disclosure for attaining the object described above uses a plant-derived material as a raw material, in which a bulk density of the solidified porous carbon material is in a range of 0.2 to 0.4 grams/cm3, preferably 0.3 to 0.4 grams/cm3, anda value of a cumulative pore volume in a range of 0.05 to 5 μm in pore size based on a mercury press-in method is in a range of 0.4 to 1.2 cm3, preferably 0.5 to 1.0 cm3 per 1 gram of the solidified porous carbon material. A method of manufacturing the solidified porous carbon material of the present disclosure for attaining the object described above includes: solidifying a plant-derived material; next carbonizing the material at 400° C. to 1400° C. in the solidified state; and next treating the material with an acid or an alkali. Advantageous Effects of Invention Since the porous carbon material of the present disclosure is solidified, the transport and the handling of the porous carbon material can be more readily carried out. In addition, in the method of manufacturing the solidified porous carbon material of the present disclosure, the plant-derived material is solidified, next is carbonized at 400° C. to 1400° C. in a solidified state, and next is treated with the acid or alkali. Therefore, the transport and the handling of the raw material and the porous carbon material, the treatment of the carbonization, and the treatment with the acid or alkali can be more readily carried out. It should be noted that the effects described in this description are merely the exemplifications and are by no means limited thereto, and an additional effect may be offered. Additional features and advantages are described herein, and will be apparent from the following Detailed Description and the figures. BRIEF DESCRIPTION OF THE FIGURES FIG. 1A and FIG. 1B are graphs depicting measurement results of a solidified porous carbon material of Example 1 based on a mercury press-in method. FIG. 2A and FIG. 2B are graphs depicting measurement results of various kinds of materials of Comparative Example 1 based on the mercury press-in method. FIG. 3A and FIG. 3B are graphs depicting values of cumulative pore volumes in the range of 0.05 to 5 μm in a solidified porous carbon material of Example 1, and various kinds of materials of Comparative Example 1 based on the mercury press-in method. FIG. 4 is a schematic cross-sectional view of a water filter of Example 2. FIG. 5A and FIG. 5B are respectively a schematic partial cros