Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Jonathan C. Otamiri"'
Publikováno v:
Journal of Catalysis. 138:562-569
CO oxidation over YBa2Cu3−δMeδO6+x, where Me is Co or Al, has been studied. The activity for CO oxidation decreases with increasing degree of substitution in the B site, in the case of substitution both with a more active element (Co) and with an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb268e06cf962c0a07f5dafd22ef9678
https://doi.org/10.1016/0021-9517(92)90307-4
https://doi.org/10.1016/0021-9517(92)90307-4
Autor:
Jonathan C. Otamiri, S.L.T. Andersson
Publikováno v:
Applied Catalysis. 73:267-280
The kinetics of carbon monoxide oxidation over YBa 2 Cu 3 O 6+x and PrBa 2 Cu 3 O 6+x catalysts was investigated in the temperature range 160 to 200°C and a single rate expression for all catalysts was derived. A reaction mechanism consistent with t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c064b894fca9be66d2fc9208c00b898
https://doi.org/10.1016/0166-9834(91)85141-h
https://doi.org/10.1016/0166-9834(91)85141-h
Publikováno v:
Applied Catalysis. 65:159-174
The catalytic activities of YBa2Cu3O6+x and copper oxides have been studied in the ammoxidation of toluene. At low oxygen pressures, over YBa2Cu3O6+x selective ammoxidation to benzonitrile occurs, whereas at high pressures, only total combustion of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f2c3a28714b93c16d4236917590b3f1
https://doi.org/10.1016/s0166-9834(00)81595-x
https://doi.org/10.1016/s0166-9834(00)81595-x
Publikováno v:
Applied Surface Science. 45:1-12
YBa2Cu3O6+x compounds prepared by a formic acid route where characterized by XPS. The samples were investigated both after scraping in air and in vacuum to reveal the surface composition after partial degradation during short time air exposure and to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce39d0c1c05e09d9c0f3602fc8850d0d
https://doi.org/10.1016/0169-4332(90)90014-q
https://doi.org/10.1016/0169-4332(90)90014-q
Autor:
Arne Andersson, Jonathan C. Otamiri
Publikováno v:
Journal of Materials Research. 5:1388-1391
Synthesis of YBa2Cu3O6+x from formic acid solutions of stoichiometric amounts of the initial materials has been investigated in the temperature range 750–950°C. The reaction is strongly influenced by the concentration of formic acid. Dilute soluti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8722d3c90e5b2adc996dc4aa8c70aff
https://doi.org/10.1557/jmr.1990.1388
https://doi.org/10.1557/jmr.1990.1388
Publikováno v:
Langmuir. 6:365-370
Metal oxides utilized as mild oxidation catalysts are industrially important in ammoxidation processes. This reaction involves the activation of NH{sub 3}, and subsequent oxidation produces a nitrile product. The most important nitriles are obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8b39c4f71e3a4138849e8c3b00b593d
https://doi.org/10.1021/la00092a013
https://doi.org/10.1021/la00092a013
Publikováno v:
Catalysis Letters. 6:33-42
mmoxidation of toluene over the perovskites YBa2Cu3O6.1, YBa2Cu2CoO6.7 and YBaCuCoO4.9 was investigated at 400 °C. At low partial pressures of O2 benzonitrile was selectively formed, while CO2 was the main product at high pressures of O2. Systematic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a1af501ea4a19148d91cd963cde1d79
https://doi.org/10.1007/bf00764050
https://doi.org/10.1007/bf00764050
YBa 2 Cu 3 O 6+x , 0≤x1≤, was used as a catalyst for the oxidation of toluene in presence of oxygen and ammonia. The partial pressures of reactants were varied. It was observed that when x is above zero, the material is active for total combustio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97fbc792dbe7fec142cb9867f909c08d
https://doi.org/10.1016/s0167-2991(08)60158-5
https://doi.org/10.1016/s0167-2991(08)60158-5
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 87:1265
Zn substitution in Y–Ba–Cu–O phases influences the catalytic ammoxidation of toluene. The activity for formation of both benzonitrile and CO2 at low and high O2 pressures, respectively, decreases strongly with increasing Zn content up to 4%. Ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6aa62c8d6a0efe3a53f1a6542aa88d8
https://doi.org/10.1039/ft9918701265
https://doi.org/10.1039/ft9918701265
Autor:
Jonathan C. Otamiri, Arne Andersson
Publikováno v:
Catalysis Today. 3:223-234
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a02a20da6f729f891c8d9eb50a87abcd
https://doi.org/10.1016/0920-5861(88)87011-1
https://doi.org/10.1016/0920-5861(88)87011-1