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
Drug comprising as the active ingredient proliferative vector containing survivin promoter
Communication system, authentication device, control server, communication method, and program
Methods, systems, and products for providing ring backs
Playback device for stereoscopic viewing, integrated circuit, and program
Television receiver
Adaptive take-off strips for smoothing ink consumption
Block copolymer nanoparticle compositions
  Randomly Featured Patents
Warning flag
Teletext decoder using a common memory
Semiconductor module and semiconductor module heat radiation plate
Image bearing template for instant camera film packs
Vertical axis wind turbine
Multilayer ceramic capacitor manufacturing process
Bolus devices for the delivery of active agents to animals
Charge balanced feedback transmitter
Irrigation sprinkler nozzle with enhanced close-in water distribution
Smoke detector