Production of ethylene with nanowire catalysts

Patent metadata

Field	Value
Publication number	US-2018117579-A1
Application number	US-201715628023-A
Country	US
Kind code	A1
Filing date	Jun 20, 2017
Priority date	May 24, 2010
Publication date	May 3, 2018
Grant date	—

Abstract

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.

First claim

1 - 113 . (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, Ca, La, W, Mn, Mo, Nd, Sm, Eu, Pr, Zr or combinations thereof.

117 . The method of claim 114 , wherein the catalytic nanowire comprises MgO, CaO, La 2 O 3 , Na 2 WO 4 , Mn 2 O 3 , Mn 3 O 4 , Nd 2 O 3 , Sm 2 O 3 , Eu 2 O 3 , Pr 2 O 3 , Mg 6 MnO 8 , NaMnO 4 , Na/Mn/W/O, MnWO 4 or combinations thereof.

118 . The method of claim 114 , wherein the catalytic nanowire further comprises one or more dopants comprising metal elements, semi-metal elements, non-metal elements or combinations thereof.

119 . The method of claim 118 , wherein the dopant comprises Li, Na, K, Mg, Ca, Ba, Sr, Eu, Sm, Co or Mn.

120 . The method of claim 119 , wherein the catalytic nanowire comprises Li/MgO, Ba/MgO, Sr/La 2 O 3 , Mg/Na/La 2 O 3 , Sr/Nd 2 O 3 , or Mn/Na 2 WO 4 .

121 . The method of claim 114 , wherein the catalytic nanowire has a ratio of effective length to actual length of less than one.

122 . The method of claim 114 , wherein the catalytic nanowire has a ratio of effective length to actual length of one.

123 . The method of claim 114 , wherein the temperature ranges from 550° C. to below 600° C.

124 . The method of claim 114 , wherein the temperature ranges from 500° C. to 550° C.

125 . A method for preparing a downstream product of ethylene, the method comprising converting ethylene into a downstream product of ethylene, and 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.

126 . The method of claim 125 , wherein the one or more elements are in the form of oxides.

127 . The method of claim 125 , wherein the catalytic nanowire comprises Mg, Ca, La, W, Mn, Mo, Nd, Sm, Eu, Pr, Zr or combinations thereof.

128 . The method of claim 125 , wherein the catalytic nanowire comprises MgO, CaO, La 2 O 3 , Na 2 WO 4 , Mn 2 O 3 , Mn 3 O 4 , Nd 2 O 3 , Sm 2 O 3 , Eu 2 O 3 , Pr 2 O 3 , Mg 6 MnO 8 , NaMnO 4 , Na/Mn/W/O, MnWO 4 or combinations thereof.

129 . The method of claim 125 , wherein the catalytic nanowire further comprises one or more dopants comprising metal elements, semi-metal elements, non-metal elements or combinations thereof.

130 . The method of claim 129 , wherein the dopant comprises Li, Na, K, Mg, Ca, Ba, Sr, Eu, Sm, Co or Mn.

131 . The method of claim 130 , wherein the catalytic nanowire comprises Li/MgO, Ba/MgO, Sr/La 2 O 3 , Mg/Na/La 2 O 3 , Sr/Nd 2 O 3 , or Mn/Na 2 WO 4 .

132 . The method of claim 125 , wherein the catalytic nanowire has a ratio of effective length to actual length of less than one.

133 . The method of claim 125 , wherein the catalytic nanowire has a ratio of effective length to actual length of one.

134 . The method of claim 125 , wherein the downstream product of ethylene is natural gasoline.

135 . The method of claim 125 , wherein the downstream product of ethylene comprises 1-hexene, 1-octene or combinations thereof.

136 . The method of claim 125 , wherein the temperature ranges from 550° C. to below 600° C.

137 . The method of claim 125 , wherein the temperature ranges from 500° C. to 550° C.

138 . A method for the preparation of a downstream product of ethylene, the method comprising:
converting methane into ethylene by 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%; and oligomerizing the ethylene to prepare a downstream product of ethylene, 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.

139 . The method of claim 138 , wherein the one or more elements are in the form of oxides.

140 . The method of claim 138 , wherein the catalytic nanowire comprises Mg, Ca, La, W, Mn, Mo, Nd, Sm, Eu, Pr, Zr or combinations thereof.

141 . The method of claim 138 , wherein the catalytic nanowire comprises MgO, CaO, La 2 O 3 , Na 2 WO 4 , Mn 2 O 3 , Mn 3 O 4 , Nd 2 O 3 , Sm 2 O 3 , Eu 2 O 3 , Pr 2 O 3 , Mg 6 MnO 8 , NaMnO 4 , Na/Mn/W/O, MnWO 4 or combinations thereof.

142 . The method of claim 138 , wherein the catalytic nanowire further comprises one or more dopants comprising metal elements, semi-metal elements, non-metal elements or combinations thereof.

143 . The method of claim 142 , wherein the dopant comprises Li, Na, K, Mg, Ca, Ba, Sr, Eu, Sm, Co or Mn.

144 . The method of claim 143 , wherein the catalytic nanowire comprises Li/MgO, Ba/MgO, Sr/La 2 O 3 , Mg/Na/La 2 O 3 , Sr/Nd 2 O 3 , or Mn/Na 2 WO 4 .

145 . The method of claim 138 , wherein the catalytic nanowire has a ratio of effective length to actual length of less than one.

146 . The method of claim 138 , wherein the catalytic nanowire has a ratio of effective length to actual length of one.

147 . The method of claim 138 , wherein the downstream product of ethylene is natural gasoline.

148 . The method of claim 138 , wherein the downstream product of ethylene comprises 1-hexene, 1-octene or combinations thereof.

149 . The method of claim 138 , wherein the temperature ranges from 550° C. to below 600° C.

150 . The method of claim 138 , wherein the temperature ranges from 500° C. to 550° C.

Assignees

• Siluria Technologies Inc

Inventors

• Scher Erik C
• Zurcher Fabio R
• Cizeron Joel M
• Schammel Wayne P
• Tkachenko Alex
• Gamoras Joel
• Karshtedt Dmitry
• Nyce Greg

Classifications

• B01J21/066

  Zirconium or hafnium; Oxides or hydroxides thereof · CPC title

• C07C2523/34

  Manganese · CPC title

• C10G2300/1025

  Natural gas · CPC title

• C07C5/48

  with oxygen as an acceptor · CPC title

• C07C2521/10

  Magnesium; Oxides or hydroxides thereof · CPC title