Method for Producing Cellulose Nanofiber Carbon
US-2022205143-A1 · Jun 30, 2022 · US
Method for Producing Cellulose Nanofiber Carbon
US2023011844A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023011844-A1 |
| Application number | US-201917778288-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 26, 2019 |
| Priority date | Nov 26, 2019 |
| Publication date | Jan 12, 2023 |
| Grant date | — |
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- Title
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Abstract
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A method for producing cellulose nanofiber carbon includes a freezing step of freezing a solution or gel containing cellulose nanofibers to obtain a frozen product, a drying step of drying the frozen product in a vacuum to obtain a dried product, and a carbonizing step of heating and carbonizing the dried product in an atmosphere in which the dried product does not burn to obtain cellulose nanofiber carbon, in which, in the carbonizing step, the dried product is heated together with a sacrificial agent that is carbonized before the dried product is carbonized to generate a reducing gas.
First claim
Opening claim text (preview).
1 . A method for producing cellulose nanofiber carbon, the method comprising: freezing a solution or gel containing a cellulose nanofiber to obtain a frozen product; drying the frozen product in a vacuum to obtain a dried product; and heating and carbonizing the dried product in an atmosphere in which the dried product does not burn to obtain cellulose nanofiber carbon, wherein in the carbonizing, the dried product is heated together with a sacrificial agent that is carbonized before the dried product is carbonized to generate a reducing gas. 2 . The method for producing the cellulose nanofiber carbon according to claim 1 , wherein pulp is used as the sacrificial agent. 3 . The method for producing the cellulose nanofiber carbon according to claim 2 , wherein an amount of water absorption per unit volume of the pulp is 150 L/m 3 or more. 4 . The method for producing the cellulose nanofiber carbon according to claim 2 , wherein the amount of water absorption per unit volume of the pulp is 8 L/kg or more. 5 . The method for producing the cellulose nanofiber carbon according to claim 3 , wherein the amount of water absorption per unit volume of the pulp is 8 L/kg or more.
Assignees
Inventors
Classifications
Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30 · CPC title
- D01F9/16Primary
from products of vegetable origin or derivatives thereof, e.g. from cellulose acetate (D01F9/18 takes precedence) · CPC title
Highly hydrated, swollen or fibrillatable fibres · CPC title
- C01B32/15Primary
Nano-sized carbon materials · CPC title
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- What does patent US2023011844A1 cover?
- A method for producing cellulose nanofiber carbon includes a freezing step of freezing a solution or gel containing cellulose nanofibers to obtain a frozen product, a drying step of drying the frozen product in a vacuum to obtain a dried product, and a carbonizing step of heating and carbonizing the dried product in an atmosphere in which the dried product does not burn to obtain cellulose nano…
- Who is the assignee on this patent?
- Nippon Telegraph & Telephone
- What technology area does this patent fall under?
- Primary CPC classification D01F9/16. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Thu Jan 12 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).