Zobrazeno 1 - 7
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pro vyhledávání: '"Yuejin Li"'
Autor:
Yuejin Li, John Nelson Armor
Publikováno v:
ChemInform. 24
The catalytic decomposition of nitrous oxide to nitrogen and oxygen was studied over a number of catalysts. Copper and cobalt exchanged ZSM-5, mordenite, zeolite beta, ZSM-11 and ferrierite are much more active than other cation-exchanged zeolites (C
Autor:
John Nelson Armor, Yuejin Li
Publikováno v:
ChemInform. 24
We discovered a family of catalysts that can effectively reduce NOx with methane in the presence of excess oxygen. This new catalytic chemistry offers an alternative means for controlling NOx emissions. Complete reduction of nitric oxide was obtained
Autor:
John Nelson Armor, Yuejin Li
Publikováno v:
ChemInform. 25
Metal ion (Co 2+ , Mn 2+ or Ni 2+ ) exchanged ferrierites are very active catalysts for the reduction of NO x with methane in the presence of excess oxygen. Co-ferrierite yields about twice the nitric oxide conversion compared to Co-ZSM-5 at T > 500
Autor:
Yuejin Li, John Nelson Armor
Publikováno v:
ChemInform. 25
The simultaneous, catalytic removal of nitrous oxide and nitric oxide in the presence of oxygen and methane or propane was studied over Co-ZSM-5. Methane is used for the reduction of nitric oxide while the nitrous oxide is able to compete for the met
Autor:
John Nelson Armor, Yuejin Li
Publikováno v:
ChemInform. 25
Palladium cation exchanged zeolites (ZSM-5, mordenite and ferrierite) were studied as catalysts for methane combustion. Pd-zeolites showed much higher activities than PdO/Al2O3. For comparable palladium loadings, PdO/Al2O3 requires a reaction tempera
Autor:
Yuejin Li, John Nelson Armor
Publikováno v:
ChemInform. 25
Gallium species supported on H-ZSM-5 and on H-mordenite are active catalysts for NO reduction with methane in the presence of excess O[sub 2]. Over Ga-H-ZSM-5, the NO reduction rate is first order in NO with a variable, fractional order in CH[sub 4].
Autor:
John Nelson Armor, Yuejin Li
Publikováno v:
ChemInform. 26
The effect of SO 2 on catalytic performance was studied for the NO/CH 4 /O 2 reaction over Co-ZSM-5 and Co-ferrierite with and without the presence of water vapor. Over a Co-ZSM-5 catalyst, in the absence of added H 2 O the addition of 53 ppm SO 2 sl