Separation of nitrous oxide from gases containing nitric oxide and hydrogen, e.g. exhaust gases from hydroxylamine production, by using a polymeric, ceramic or carbon sieve to give a recyclable retentate

摘要

Separation of N2O from gases (I) also containing NO and H2 is by use of a semi-permeable membrane to give a permeate with a higher volume of N2O than gases (I) and a retentate with a lower volume of N2O than gases (I).