03-05-2018 дата публикации
Номер: US20180117579A1
Принадлежит:
Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to ethylene. Related methods for use and manufacture of the same are also disclosed. 1113-. (canceled)114. A method for the preparation of ethylene from methane , the method comprising contacting a mixture comprising oxygen and methane at a temperature below 600° C. with a catalytic nanowire , thereby producing C2 hydrocarbons at a selectivity of greater than 30% , wherein the catalytic nanowire comprises one or more elements from any of Groups 1 through 7 , lanthanides , actinides or combinations thereof in the form of oxides , hydroxides , oxyhydroxides , sulfates , carbonates , oxide carbonates , oxalates , phosphates , hydrogenphosphates , dihydrogenphosphates , oxyhalides , hydroxihalides , oxysulfates or combinations thereof.115. The method of claim 114 , wherein the one or more elements are in the form of oxides.116. The method of claim 114 , wherein the catalytic nanowire comprises Mg claim 114 , Ca claim 114 , La claim 114 , W claim 114 , Mn claim 114 , Mo claim 114 , Nd claim 114 , Sm claim 114 , Eu claim 114 , Pr claim 114 , Zr or combinations thereof.117. The method of claim 114 , wherein the catalytic nanowire comprises MgO claim 114 , CaO claim 114 , LaO claim 114 , NaWO claim 114 , MnO claim 114 , MnO claim 114 , NdO claim 114 , SmO claim 114 , EuO claim 114 , PrO claim 114 , MgMnO claim 114 , NaMnO claim 114 , Na/Mn/W/O claim 114 , MnWOor combinations thereof.118. The method of claim 114 , wherein the catalytic nanowire further comprises one or more dopants comprising metal elements claim 114 , semi-metal elements claim 114 , non-metal elements or combinations thereof.119. The method of claim 118 , wherein the dopant comprises Li claim 118 , Na claim 118 , K claim 118 , Mg claim 118 , Ca claim 118 , Ba claim 118 , Sr claim 118 , Eu claim 118 , Sm claim 118 , Co or Mn.120. The ...
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