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
Charge domain filter and method thereof
Display systems with touch screens
Radio transmitter and radio receiver with channel condition assessment
Identifying conceptually related terms in search query results
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
Control device of hybrid vehicle
End to end email monitor
  Randomly Featured Patents
Main body of a construction machine
Multiflow tubular air heater
Dibenzofuran distillation and crystallization process
Foil container with foil bag chambers which are arranged next to one another
Polymer, top coating layer, top coating composition and immersion lithography process using the same
Diphenylazetidinones, process for their preparation, medicaments comprising these compounds and their use
Adjustable disk show rack
Adaptive optics apparatus that corrects aberration of examination object and image taking apparatus including adaptive optics apparatus
Semiconductor wafer polishing machine
Tiarrella plant named `FM Mooberry`