Process for the chemoselective reduction of terminally saturated carboxylic esters
US-9193651-B2 · Nov 24, 2015 · US
Method for the production of ethylene glycol
US8962895B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8962895-B2 |
| Application number | US-201214001120-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 24, 2012 |
| Priority date | Feb 25, 2011 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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The present invention relates to a method for the production of ethylene glycol using a feedstock comprising an oxalate and a catalyst containing copper and/or a copper oxide, comprising contacting the feedstock with the catalyst in a reactor under the conditions of a temperature in the range from about 170 to about 270° C., a weight hourly space velocity of the oxalate in the range from about 0.2 to about 5 h −1 , a molar ratio of hydrogen to the oxalate in the range from about 40:1 to about 200:1 and a reaction pressure in the range from about 1.5 to about 10 MPa, to produce an effluent containing ethylene glycol, in which the reactor is a tube-array reactor using partitioned heat exchange and adopting outer and inner tubes configured in a double-tube structure to facilitate the heat exchange of the catalyst.
First claim
Opening claim text (preview).
What is claimed: 1. A method for production of ethylene glycol using a feedstock comprising an oxalate and a catalyst containing copper and/or a copper oxide, comprising: contacting the feedstock with the catalyst in a reactor under conditions of a temperature in a range from about 170 to about 270° C., a weight hourly space velocity of the oxalate in a range from about 0.2 to about 7 h − , a molar ratio of hydrogen to the oxalate in a range from about 20:1 to about 200:1 and a re…
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Operations & Transport · mapped topic
- C07C29/149Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US8962895B2 cover?
- The present invention relates to a method for the production of ethylene glycol using a feedstock comprising an oxalate and a catalyst containing copper and/or a copper oxide, comprising contacting the feedstock with the catalyst in a reactor under the conditions of a temperature in the range from about 170 to about 270° C., a weight hourly space velocity of the oxalate in the range from about …
- Who is the assignee on this patent?
- Liu Juntao, Yang Weimin, Li Lei, and 5 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 Feb 24 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).