Zobrazeno 1 - 10
of 29
pro vyhledávání: '"John Nelson Armor"'
Autor:
Yuejin Li, John Nelson Armor
Publikováno v:
Journal of Catalysis. 176:495-502
The ammoxidation of ethane and ethylene to acetonitrile was studied over a Co-ZSM-5 catalyst with an emphasis on the reaction pathway. We found that the adsorption of ammonia on Co-ZSM-5 is stronger than that on H-ZSM-5. C 2 H 4 adsorption is weak an
Autor:
Yuejin Li, John Nelson Armor
Publikováno v:
Journal of Catalysis. 173:511-518
Ammoxidation of ethane to acetonitrile was studied over a variety of metal ion exchanged zeolite catalysts. We discovered that ethane can be efficiently converted to acetonitrile over some Co-zeolite catalysts. The type of zeolite is very important.
Autor:
John Nelson Armor, Yuejin Li
Publikováno v:
Applied Catalysis B: Environmental. 13:131-139
Al2O3 and ZSM-5 supported Pd, Rh and Pt catalysts were studied for NH3 oxidation at 200–350°C in comparison with V2O5/TiO2 and Co-ZSM-5 catalysts at 250–400°C. The precious metal catalysts are very active for NH3 oxidation in this temperature r
Autor:
John Nelson Armor, Yuejin Li
Publikováno v:
Applied Catalysis B: Environmental. 5:L257-L270
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
Publikováno v:
Applied Catalysis A: General. 114:L187-L190
We wish to report that simple combination of an aqueous transition metal salt, alumina, and the ammonium form of the zeolite can be readily extruded, and upon calcination to 650°C, the resulting extrudate as a catalyst behaves similarly to catalysts
Autor:
John Nelson Armor, Yuejin Li
Publikováno v:
Applied Catalysis B: Environmental. 3:275-282
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:
John Nelson Armor, Yuejin Li
Publikováno v:
Applied Catalysis B: Environmental. 3:55-60
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:
Applied Catalysis B: Environmental. 3:L1-L11
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:
John Nelson Armor, Yuejin Li
Publikováno v:
Applied Catalysis B: Environmental. 2:239-256
Catalytic reduction of NO x with methane in an oxidizing atmosphere was studied over metal exchanged zeolites. We found that the combinations of Co 2+ , Mn 2+ and Ni 2+ with certain types of zeolites, e.g., ZSM-5 and mordenite, are active catalysts f
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