Process for preparing high-purity semi-metal compounds
US-2016326002-A1 · Nov 10, 2016 · US
Method for preparing a hydrosilane using hetero atom containing activated carbon
US9481579B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9481579-B2 |
| Application number | US-201414582700-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 24, 2014 |
| Priority date | Oct 23, 2014 |
| Publication date | Nov 1, 2016 |
| Grant date | Nov 1, 2016 |
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- Title
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Abstract
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The present invention relates to a method for preparing a hydrosilane using heteroatom-containing activated carbon, more particularly to a method for economically preparing a high-purity hydrosilane by redistribution of a chlorosilane using a heteroatom-containing activated carbon catalyst.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for preparing a hydrosilane represented by Chemical Formula 2 by redistribution of a chlorosilane represented by Chemical Formula 1 using heteroatom-containing activated carbon as a catalyst: wherein each of X 1 and X 2 , which may be identical or different, is independently hydrogen or chlorine. 2. The method for preparing a hydrosilane according to claim 1 , wherein the chlorosilane is trichlorosilane or dichlorosilane. 3. The method for preparing a hydrosilane according to claim 1 , wherein the heteroatom-containing activated carbon comprises 0.01-15 wt % of a group 15 heteroatom having an unshared electron pair based on the total weight of the catalyst. 4. The method for preparing a hydrosilane according to claim 1 or 3 , wherein the heteroatom is nitrogen, phosphorus or a combination thereof. 5. The method for preparing a hydrosilane according to claim 1 , wherein the redistribution is conducted at a reaction temperature of 40-500° C. 6. The method for preparing a hydrosilane according to claim 5 , wherein the redistribution is conducted at a reaction temperature of 150-300° C. while maintaining the stability of the catalyst. 7. The method for preparing a hydrosilane according to claim 1 , wherein the redistribution is conducted at a reaction pressure of 1-10 bar. 8. The method for preparing a hydrosilane according to claim 1 , which further comprises, before the redistribution, vaporizing the chlorosilane by preheating to 40-300° C. 9. The method for preparing a hydrosilane according to claim 1 , which further comprises, after the redistribution, cooling the hydrosilane. 10. The method for preparing a hydrosilane according to claim 1 , wherein the reaction is conducted while supplying the chlorosilane at a rate of 2-200 WHSV based on the amount of the catalyst.
Assignees
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Classifications
Nitrogen compounds · CPC title
Particulate material · CPC title
Halogenated silanes · CPC title
Heating or cooling the reactor (B01J8/062 takes precedence) · CPC title
in a heat exchanger for the heat exchange medium separate from the reactor · CPC title
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- What does patent US9481579B2 cover?
- The present invention relates to a method for preparing a hydrosilane using heteroatom-containing activated carbon, more particularly to a method for economically preparing a high-purity hydrosilane by redistribution of a chlorosilane using a heteroatom-containing activated carbon catalyst.
- Who is the assignee on this patent?
- Korea Inst Sci & Tech
- What technology area does this patent fall under?
- Primary CPC classification C01B33/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 01 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).