Process for the chemoselective reduction of terminally saturated carboxylic esters
US-9193651-B2 · Nov 24, 2015 · US
Method for improving the quality of ethylene glycol products
US9051236B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9051236-B2 |
| Application number | US-201214000878-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 24, 2012 |
| Priority date | Feb 25, 2011 |
| Publication date | Jun 9, 2015 |
| Grant date | Jun 9, 2015 |
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Abstract
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A method for improving the quality of ethylene glycol products, which mainly solves the technical problem of low UV-light transmittance of the ethylene glycol products present in the prior art. The method successfully solves the problem by use of the technical solution wherein the ethylene glycol raw material and hydrogen are passed through a rotating packed bed reactor loaded with solid oxide catalyst at a temperature of about 20 to about 280° C., a pressure of about 0.1 to about 4.0 MPa, a space velocity of about 0.2 to about 100.0 hr −1 and a molar ratio of hydrogen to ethylene glycol of from about 0.01 to 40:1, and ethylene glycol is obtained after the reaction. The solid oxide catalyst is at least one of copper-based, nickel-based and palladium-based catalysts, and the rotation rate of the rotating packed bed reactor is about 300 to about 5000 rpm.
First claim
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The invention claimed is: 1. A method for improving quality of ethylene glycol products, wherein ethylene glycol raw material obtained by hydrogenation of oxalates and hydrogen are passed through a rotating packed bed reactor loaded with a solid oxide catalyst at a temperature of about 20 to about 280° C., a pressure of about 0.1 to about 4.0 MPa, a space velocity of about 0.2 to about 100.0 hr −1 and a molar ratio of hydrogen to ethylene glycol of from about 0.01:1 to about 40:1,…
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Chemistry & Metallurgy · mapped topic
- C07C29/149Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US9051236B2 cover?
- A method for improving the quality of ethylene glycol products, which mainly solves the technical problem of low UV-light transmittance of the ethylene glycol products present in the prior art. The method successfully solves the problem by use of the technical solution wherein the ethylene glycol raw material and hydrogen are passed through a rotating packed bed reactor loaded with solid oxide …
- Who is the assignee on this patent?
- Liu Juntao, Zhang Yuhong, Wang Wanmin, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C07C29/149. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 09 2015 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).