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US-10626482-B2 · Apr 21, 2020 · US
Methods for making zeolites
US10844460B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10844460-B2 |
| Application number | US-201916541523-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 15, 2019 |
| Priority date | Jun 8, 2016 |
| Publication date | Nov 24, 2020 |
| Grant date | Nov 24, 2020 |
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Abstract
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A method of making a zeolite comprises: adding a zeolite seed to a leach solution containing silicon and aluminum; and heating the leach solution to obtain the zeolite. The leach solution can be made by mixing coal ash with a basic stream, thereby creating (i) a leach solution containing silicon and aluminum, and (ii) leached ash; and separating the leach solution from the leached ash.
First claim
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The invention claimed is: 1. A method of making a zeolite, comprising: mixing coal ash with a basic stream, thereby creating (i) a leach solution containing silicon and aluminum, and (ii) leached ash; separating the leach solution from the leached ash; adding a zeolite seed to the leach solution, wherein the zeolite seed is a zeolite crystal or a template compound; and heating the leach solution to obtain the zeolite. 2. The method of claim 1 , wherein the leach solution is heated at a temperature of about 100° C. to about 200° C., and for a time of about 12 hours to about 96 hours. 3. The method of claim 1 , wherein the molar ratio of silicon to aluminum in the zeolite is from about 4:1 to about 8:1. 4. The method of claim 1 , wherein the zeolite further comprises potassium, sodium, oxygen, or hydrogen. 5. The method of claim 1 , wherein the basic stream contains a base, and the base comprises sodium hydroxide, potassium hydroxide, sodium bicarbonate, magnesium hydroxide, or calcium hydroxide. 6. The method of claim 5 , wherein the basic stream contains from 1% to about 10% of the base (w/w). 7. The method of claim 1 , wherein the coal ash has a particle size of 1 micron to 40 microns.
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- What does patent US10844460B2 cover?
- A method of making a zeolite comprises: adding a zeolite seed to a leach solution containing silicon and aluminum; and heating the leach solution to obtain the zeolite. The leach solution can be made by mixing coal ash with a basic stream, thereby creating (i) a leach solution containing silicon and aluminum, and (ii) leached ash; and separating the leach solution from the leached ash.
- Who is the assignee on this patent?
- Battelle Memorial Institute
- What technology area does this patent fall under?
- Primary CPC classification C22B59/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 24 2020 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).