Calcium oxide or magnesium oxide production with alkali and sulfur dioxide intermediates
US-12017985-B2 · Jun 25, 2024 · US
Dumbbell-shaped calcium hydroxide nanoparticles, an enhanced fuel comprising the nanoparticles, and a method for making
US11613472B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11613472-B2 |
| Application number | US-201916655754-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 17, 2019 |
| Priority date | Jul 22, 2019 |
| Publication date | Mar 28, 2023 |
| Grant date | Mar 28, 2023 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Nanoparticles of calcium hydroxide having a dumbbell shape, wherein the dumbbell shape has rounded ends separated by a narrow central portion, wherein a ratio of a largest width of the central portion to a largest width of the rounded ends is 0.30 to 0.75, a length is in the range of 500 nm to 1100 nm, the largest width of the narrow central portion is 100 to 250 nm, and the largest width of the narrow central portion is 100 to 250 nm. The nanoparticles have a mesoporous structure and are made up of subparticles that have a size of 5 to 75 nm. A method of making the nanoparticles from calcined calcium carbonate sources is disclosed. Also disclosed is an enhanced fuel containing the nanoparticles.
First claim
Opening claim text (preview).
The invention claimed is: 1. Nanoparticles of calcium hydroxide having a dumbbell shape, wherein the dumbbell shape has rounded ends separated by a narrow central portion, wherein a ratio of a largest width of the narrow central portion to a largest width of the rounded ends is 0.30 to 0.75, and a length in a range of 500 nm to 1100 nm. 2. The nanoparticles of claim 1 , wherein the largest width of the narrow central portion is 100 to 250 nm. 3. The nanoparticles of claim 1 , wherein the nanoparticles have a mesoporous or macroporous structure. 4. The nanoparticles of claim 1 , which comprise agglomerated subparticles. 5. The nanoparticles of claim 4 , wherein the agglomerated subparticles have a size of 5 to 75 nm. 6. The nanoparticles of claim 1 , which have a thermal conductivity of 0.40 to 0.80 Wm- 1 K −1 in a temperature range 290 to 550 K. 7. The nanoparticles of claim 1 , which have a thermal diffusivity of 0.35 to 0.90 mm 2 s −1 in a temperature range 290 to 550 K. 8. The nanoparticles of claim 1 , which have a specific heat of 2.75 to 7.00 MJm −2 K −1 in a temperature range 290 to 550 K.
Assignees
Inventors
Classifications
- C01F11/02Primary
Oxides or hydroxides (production of lime C04B2/00) · CPC title
Thermal properties · CPC title
- C10L1/1233Primary
oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof · CPC title
Nanometer sized, i.e. from 1-100 nanometer · CPC title
extending in three dimensions · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11613472B2 cover?
- Nanoparticles of calcium hydroxide having a dumbbell shape, wherein the dumbbell shape has rounded ends separated by a narrow central portion, wherein a ratio of a largest width of the central portion to a largest width of the rounded ends is 0.30 to 0.75, a length is in the range of 500 nm to 1100 nm, the largest width of the narrow central portion is 100 to 250 nm, and the largest width of th…
- Who is the assignee on this patent?
- Univ King Fahd Pet & Minerals
- What technology area does this patent fall under?
- Primary CPC classification C01F11/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 28 2023 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).