Raschig process
McGraw-Hill Science & Technology Dictionary:
Top
Raschig process
(′rä·shik ′prä·səs)
(chemical engineering) A method for production of phenol that begins with a first-stage chlorination of benzene, using an air-hydrochloric acid mixture.
Related Videos:
Top
Raschig process
Wikipedia on Answers.com:
Top
Raschig process
 |
This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2009) |
The Raschig process (named after the German chemist Friedrich Raschig) is a chemical process for producing hydroxylamine (used for making caprolactam for nylon manufacture). The process converts ammonium carbonate to ammonium nitrite, and this is converted to hydroxylamine disulfonate and thence to hydroxylamine sulfate.
Another similarly named process is the Raschig-Hooker process, an industrial process to create phenol. It is done by the hydrolysis of chlorobenzene.
The Olin Raschig process is an industrial process used to produce hydrazine and developed by the Olin Corporation. Sodium hypochlorite solution is mixed with ammonia at 5 °C to form chloramine and sodium hydroxide, which is then rapidly added to anhydrous ammonia under pressure and heated to 130 °C to generate hydrazine, water and sodium chloride (waste product). Ammonia is used in a 33 fold excess.
 |
This chemical reaction article is a stub. You can help Wikipedia by expanding it. |
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
Post a question - any question - to the WikiAnswers community:
Copyrights:
McGraw-Hill Science & Technology Dictionary
McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
Read more
