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US 2021/0363022 A1Published application
Method for producing tetrahydroborate and tetrahydroborate
AssigneeSintokogio, Ltd.
InventorMasahiko NAGASAKA
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Abstract
The present disclosure relates to a method for producing a tetrahydroborate, the method including a plasma treatment step of exposing a borate to a hydrogen plasma.
Claims20
1:
- A method for producing a tetrahydroborate, the method comprising a plasma treatment step of exposing a borate to a hydrogen plasma.
2:
- The method according to claim 1, wherein the hydrogen plasma is generated using a raw material gas containing at least one of hydrogen gas and hydrocarbon gas.
3:
- The method according to claim 1, wherein the hydrogen plasma is a microwave plasma or an RF plasma.
4:
- The method according to claim 1, further comprising a preheating step of heating the borate before the plasma treatment step.
5:
- The method according to claim 1, wherein the plasma treatment step is performed while heating the borate.
6:
- The method according to claim 1, wherein the plasma treatment step is performed while fluidizing the borate.
7:
- The method according to claim 1, wherein an average particle diameter of the borate is 500 μm or less.
8:
- The method according to claim 1, wherein the borate is sodium metaborate.
9:
- The method according to claim 1, further comprising a borate preparation step of reacting a tetrahydroborate with water to obtain a borate before the plasma treatment step.
10:
- A tetrahydroborate having a composition represented by the following General Formula (A) or (B):
- MxByHz (A)
- NsBtHu (B)
- wherein, in Formula (A), M is at least one selected from the group consisting of Li, Na, and K, x is 0.05 or more and less than 1.0, y is 0.6 or more and less than 1.0, and z is 4.0, and in Formula (B), N is at least one selected from the group consisting of Ca and Mg, s is 0.05 or more and less than 1.0, t is 1.2 or more and less than 2.0, and u is 8.0.
1 more element
11:
- The method according to claim 2, wherein the hydrogen plasma is a microwave plasma or an RF plasma.
12:
- The method according to claim 2, further comprising a preheating step of heating the borate before the plasma treatment step.
13:
- The method according to claim 3, further comprising a preheating step of heating the borate before the plasma treatment step.
14:
- The method according to claim 2, wherein the plasma treatment step is performed while heating the borate.
15:
- The method according to claim 3, wherein the plasma treatment step is performed while heating the borate.
16:
- The method according to claim 4, wherein the plasma treatment step is performed while heating the borate.
17:
- The method according to claim 2, wherein the plasma treatment step is performed while fluidizing the borate.
18:
- The method according to claim 3, wherein the plasma treatment step is performed while fluidizing the borate.
19:
- The method according to claim 4, wherein the plasma treatment step is performed while fluidizing the borate.
20:
- The method according to claim 5, wherein the plasma treatment step is performed while fluidizing the borate.