JP2002012585A5 - - Google Patents
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- JP2002012585A5 JP2002012585A5 JP2000194267A JP2000194267A JP2002012585A5 JP 2002012585 A5 JP2002012585 A5 JP 2002012585A5 JP 2000194267 A JP2000194267 A JP 2000194267A JP 2000194267 A JP2000194267 A JP 2000194267A JP 2002012585 A5 JP2002012585 A5 JP 2002012585A5
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- catalyst
- supported
- palladium
- ruthenium
- platinum
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Description
【００１１】
粗ラクタムの水素添加処理は、水素添加触媒（以下、「触媒」ということがある）の存在下に水素ガスまたは水素含有ガスと接触させることにより行うことができる。該触媒としては、例えば、ニッケル、パラジウム、白金、ルテニウム、ロジウム等のVIII族遷移金属が挙げられ、必要に応じてその２種以上を用いることもできる。触媒は、適当な担体に担持された担持触媒として用いるのが好ましく、該担体としては、例えば、活性炭、アルミナ、シリカ、チタニア等が挙げられる。中でも、触媒活性や触媒寿命の点から、パラジウムを活性炭の表面に担持したものや、さらに白金やルテニウムを共担持したものが好ましく、エッグシェルタイプの触媒が特に好ましい。パラジウムを活性炭に担持した触媒を用いる場合、パラジウムの担持量は、担持触媒全体に対して、通常０．１〜２０重量％、好ましくは０．５〜５重量％である。また、さらに白金やルテニウムが共担持された触媒を用いる場合、その担持量は、担持触媒全体に対して、通常２重量％以下である。なお、触媒の寿命は、使用する粗ラクタムや水添処理の条件により異なるが、本発明の方法によれば、１年以上とすることもできる。[0011]
The hydrogenation treatment of the crude lactam can be carried out by contacting with hydrogen gas or a hydrogen-containing gas in the presence of a hydrogenation catalyst (hereinafter sometimes referred to as "catalyst"). Examples of the catalyst include Group VIII transition metals such as nickel, palladium, platinum, ruthenium, rhodium and the like, and two or more thereof can also be used as needed. The catalyst is preferably used as a supported catalyst supported on a suitable support, and examples of the support include activated carbon, alumina, silica, titania and the like. Among them, from the viewpoint of the catalyst activity and the catalyst life, one in which palladium is supported on the surface of activated carbon, and one in which platinum and ruthenium are further co-supported is preferable, and an eggshell type catalyst is particularly preferable. When a catalyst in which palladium is supported on activated carbon is used, the amount of palladium supported is usually 0.1 to 20% by weight, preferably 0.5 to 5% by weight, based on the total weight of the supported catalyst. Also, if further platinum and Le ruthenium is used co-supported catalyst, the supported amount, relative to the entire supported catalyst, is usually 2 wt% or less. In addition, although the lifetime of a catalyst changes with conditions of the crude lactam to be used and the hydrogenation process, according to the method of this invention, it can also be made into 1 year or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000194267A JP4257988B2 (en) | 2000-06-28 | 2000-06-28 | Purification method of ε-caprolactam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000194267A JP4257988B2 (en) | 2000-06-28 | 2000-06-28 | Purification method of ε-caprolactam |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2002012585A JP2002012585A (en) | 2002-01-15 |
| JP2002012585A5 true JP2002012585A5 (en) | 2004-11-18 |
| JP4257988B2 JP4257988B2 (en) | 2009-04-30 |
Family
ID=18693124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000194267A Expired - Fee Related JP4257988B2 (en) | 2000-06-28 | 2000-06-28 | Purification method of ε-caprolactam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4257988B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102892752B (en) | 2010-03-15 | 2015-03-25 | 宇部兴产株式会社 | Method for producing amide compound |
| JP6003755B2 (en) * | 2012-12-19 | 2016-10-05 | 東レ株式会社 | Lactam purification method |
-
2000
- 2000-06-28 JP JP2000194267A patent/JP4257988B2/en not_active Expired - Fee Related
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