Patent
Catalytic reduction of nitrogen oxides
Reads0
Chats0
TLDR
In this paper, the authors describe a method to reduce nitrogen oxides in exhaust gases using catalytic reduction in the presence of oxygen and ammonia at 200° to 600° C. over a catalyst of at least one catalyst component selected from the group consisting of compounds of metals of groups 1B, 5A, 6A, 7A and 8 of the periodic table, and lanthanides and tin supported on a specific carrier comprising a main component of calcium silicate.Abstract:
Nitrogen oxides in exhaust gases are catalytically reduced in the presence of oxygen and ammonia at 200° to 600° C. over a catalyst of at least one catalyst component selected from the group consisting of compounds of metals of Groups 1B, 5A, 6A, 7A and 8 of the periodic table, and lanthanides and tin which is supported on a specific carrier comprising a main component of calcium silicate.read more
Citations
More filters
PatentDOI
Catalytic reduction of nitrogen oxides
TL;DR: In this article, the authors proposed a method for catalytically reducing one or more nitrogen oxides from a gaseous stream, where the microporous molecular sieve composition is (i) optionally acid treated with an inorganic or organic acid, (ii) hydrogen-forming cation exchanged, prior to said contacting in said method, and wherein at least a portion of excessive ammonia in such a method is oxidized without substantial adverse effect on catalytic reduction.
Patent
Novel cerium oxide particulates
TL;DR: In this article, amorphologically improved cerium oxide particulates having low sulfur content, useful, e.g., as catalyst/catalyst supports, and having a B.E.T. specific surface of at least 130 m 2 /g measured at a temperature ranging from 400° C.
Patent
Platinum gold catalyst for removing NOx and NH3 from gas streams
TL;DR: In this article, a platinum-gold catalyst was used for selective reduction of NO x with NH 3 as well as decomposition of excess NH 3 is provided over a wide temperature range.
Patent
Process for nitrous oxide purification
Patrick Notte,L. Barry Greenwood Bowman,Judith Pauline Oppenheim,Alexander S. Noskov,Ramoorthy Chandrasekhar,Greg Concord Croce +5 more
TL;DR: In this article, a method for purification of a nitrous oxide gas by feeding the gas and a reducing agent into a de-oxidation reactor, performing deoxidation by reacting the reducing agent with oxygen using a catalyst in order to deplete the oxygen in the gas.
Patent
NOx reduction in flue gas
Norman C. Samish,Jack B. Pohlenz +1 more
TL;DR: In this article, a selective catalytic reduction (SCR) was proposed for reducing the oxides of nitrogen (NO x ) content of a furnace flue gas. But the SCR process is not suitable for high temperature environments.