Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Process for purifying ammonia










Image Number 4 for United States Patent #6749819.

There are disclosed a process for purifying ammonia which comprises bringing crude ammonia into contact with a catalyst comprising manganese oxide as an effective ingredient to remove oxygen and/or carbon dioxide that are contained as impurities in the ammonia, and a process for purifying ammonia which comprises bringing crude ammonia into contact with a catalyst comprising manganese oxide as an effective ingredient, and thereafter with a synthetic zeolite having a pore diameter in the range of 4 to 10 .ANG. to remove at least one impurity selected from the group consisting of oxygen, carbon dioxide and moisture that are contained in the crude ammonia. It is made possible by the above process to remove impurities to an extremely low concentration from crude ammonia available on the market for industrial use and crude ammonia from a gallium nitride compound semi-conductor without decomposition of ammonia to generate hydrogen.








 
 
  Recently Added Patents
Wrench head
Interest point detection
Systems and methods for authorizing, authenticating and accounting users having transparent computer access to a network using a gateway device
Pandemic protocol for emergency dispatch
Specializing disambiguation of a natural language expression
Web-based royalty system and user interface
Video stabilization
  Randomly Featured Patents
Well car adjustable guide apparatus
Container for purification of water by sunlight
Digital phase meter apparatus
Project estimator
Zinc N,N'-alkenylsuccinoyl dipyridyl succinate as antioxidant
Telephone line circuit
Conductive memory array having page mode and burst mode read capability
Mechanical apparatus for activating no load current limiting circuits in electric motors
Devices for hitting golf balls when in confined spaces
LED base