Process for the chemoselective reduction of terminally saturated carboxylic esters
US-9193651-B2 · Nov 24, 2015 · US
Method for producing ethylene glycol from oxalate through the fluidized bed catalytic reaction
US9102583B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9102583-B2 |
| Application number | US-201214000876-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 24, 2012 |
| Priority date | Feb 25, 2011 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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A process for producing ethylene glycol includes contacting an oxalate with a fluidized bed catalyst under the following conditions: a reaction temperature of from about 170 to about 270° C., a weight space velocity of oxalate of from about 0.2 to about 7 hours −1 , a hydrogen/ester molar ratio of about 20˜200:1, a reaction pressure of from about 1.5 to about 10 MPa, and a reaction temperature difference T of from about 1 to about 15° C. The fluidized bed catalyst includes: a) from about 5 to about 80 parts by weight of copper and the oxide thereof, b) from about 10 to about 90 parts by weight of at least one carrier selected from silica, molecular sieve or alumina, c) from about 0.01 to about 30 parts by weight of bismuth and tungsten metallic elements or the oxides thereof, or cerium and niobium metallic elements or the oxides thereof.
First claim
Opening claim text (preview).
What is claimed is: 1. A process for producing ethylene glycol, the process comprising contacting an oxalate as a raw material with a fluidized bed catalyst under the following conditions: a reaction temperature of from about 170° C. to about 270° C., a weight space velocity of the oxalate of from about 0.2 h −1 to about 7 h −1 , a hydrogen/ester molar ratio of from about 20:1 to about 200:1, a reaction pressure of from about 1.5 MPa to about 10 MPa, and a reaction temperature di…
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Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- C07C29/149Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US9102583B2 cover?
- A process for producing ethylene glycol includes contacting an oxalate with a fluidized bed catalyst under the following conditions: a reaction temperature of from about 170 to about 270° C., a weight space velocity of oxalate of from about 0.2 to about 7 hours −1 , a hydrogen/ester molar ratio of about 20˜200:1, a reaction pressure of from about 1.5 to about 10 MPa, and a reaction temperature …
- Who is the assignee on this patent?
- Yang Weimin, Liu Juntao, Wang Wanmin, and 3 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 Aug 11 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).