摘要:
A method for the oxidative conversion of methane, to higher hydrocarbons, particularly ethylene and ethane, in which a methane-containing gas, such as natural gas, and a free oxygen containing gas are contacted with a contact material selected from the group consisting of:(a) a component comprising: (1) at least one oxide of a metal selected from the group consisting of calcium, strontium and barium and, optionally, a component comprising: (2) at least one material selected from the group consisting of chloride ions, compounds containing chloride ions, tin and compounds containing tin;(b) a component comprising: (1) at least one metal selected from the group consisting of sodium, potassium and compounds containing said metals, a component comprising: (2) at least one metal selected from the group consisting of Group IIA metals and compounds containing said metals, and, optionally, a component comprising: (3) at least one material selected from the group consisting of chloride ions, compounds containing chloride ions, tin and compounds containing tin; and(c) a component comprising: (1) at least one metal selected from the group consisting of Group IA metals and compounds containing said metals, a component comprising: (2) at least one metal selected from the group consisting of calcium, strontium, barium and compounds containing said metals and, optionally, a component comprising: (3) at least one material selected from the group consisting of chloride ions, compounds containing chloride ions, tin and compounds containing tin.
摘要:
A method for the oxidative conversion of feed organic compounds to product organic compounds, particularly, the conversion of methane to higher hydrocarbons and the conversion of saturated C.sub.2 to C.sub.7 hydrocarbons to less saturated hydrocarbons, in which the feed compounds are contacted with a free oxygen-containing gas, water and a contact material, comprising at least one Group IIA metal or lanthanum and oxygen; at least two Group IIA metals, Lanthanum Series metals, zinc, or titanium and oxygen; at least one Group IA metal, at least one Group IIA metal, Lanthanum Series metals, zinc or titanium and oxygen; at least one Group IA metal or Group IIA metal, phosphorous and oxygen; cobalt, at least one of zirconium, zinc, nickel, indium, lead or bismuth, phosphorous, at least one Group IA metal and oxygen; or cobalt, at least one Group IA metal, silicon and oxygen.
摘要:
A method for the oxidative conversion of methane, at a high conversion and high selectivity to ethylene and ethane, in which a methane-containing gas, such as a natural gas, and an oxygen-containing gas are contacted with a contact material comprising lithium, in an effective amount, preferably 0.1 to 50 wt. % (expressed as the metal), and magnesium oxide, as by passing a mixture of the methane-containing gas and the oxygen-containing gas through a body of the contact material.
摘要:
An improved process of preparing a composition, which is effective as a CO oxidation catalyst and contains (a) a SnO.sub.2 -coated porous ceramic material, (b) Pt and/or Pd and (c) at least one compound of Mn and/or Cr, requires the preparation of component (a) by impregnation of a porous ceramic material (preferably a monolith) with a tin carboxylate solution, followed by drying and calcining (so as to decompose tin carboxyte to tin dioxide).
摘要:
A composition of matter, effective as catalyst for CO oxidation with O.sub.2 at about 20.degree.-30.degree. C., comprising iridium metal, iron oxide and titania is prepared by a process comprising impregnating a titania-containing support material with at least one iron compound and at least one iridium carbonyl compound, drying the thus impregnated material, and treating it with a reducing gas (preferably H.sub.2).
摘要:
C.sub.3 and/or C.sub.4 hydrocarbons (in particular propane and butanes) are converted to less saturated hydrocarbons (in particular ethylene and propylene) in the presence of a catalyst consisting essentially of either (a) zinc oxide and manganese oxide or (b) zinc oxide, manganese oxide and calcium oxide. Compositions of matter (a) and (b), as defined above, are provided in accordance with this invention.
摘要:
A method for the oxidative conversion of feed organic compounds to product organic compounds, particularly, the conversion of toluene to bibenzyl and stilbene and the conversion of acetonitrile to acrylonitrile, in which the feed compounds are contacted with a free oxygen-containing gas and a contact material, comprising at least one Group IIA metal or lanthanum and oxygen; at least two Group IIA metals, Lanthanum Series metals, zinc, or titanium and oxygen; at least one Group IA metal, at least one Group IIA metal, Lanthanum Series metals, zinc or titanium and oxygen; at least one Group IA metal or Group IIA metal, phosphorous and oxygen; cobalt, at least one of zirconium, zinc, nickel, indium, lead or bismuth, phosphorous, at least one Group IA metal and oxygen; or cobalt, at least one Group IA metal, silicon and oxygen.
摘要:
A composition of matter comprising zirconia and Pt and/or Pd is prepared by a process comprising one step of treating Pt- and/or Pd-impregnated zirconia with a reducing gas, in particular free hydrogen, at a temperature of about 100.degree.-600.degree. C. Another composition of matter comprising zirconia and Pt and/or Pd is prepared by a process comprising the steps of impregnating a porous ceramic material (preferably a monolith) with a Zr compound, substantially decomposing the Zr compound to ZrO.sub.2, impregnating with Pt and/or Pd, drying/calcining, and reducing with a reducing gas, in particular free hydrogen, at a temperature of about 0.degree.-400.degree. C. Both compositions of matter are used as catalysts in a process for oxidizing CO to CO.sub.2, e.g. in a CO.sub.2 laser. Preferably, at least one iron compound is present as copromoter in these compositions of matter.
摘要:
Compositions of matter, including: a composition consisting of iron oxide and magnesium oxide; a composition comprising iron oxide, manganese oxide and magnesium oxide; a composition comprising a small amount of iron oxide and a larger amount of an oxide of a Lanthanum Series metal, particularly lanthanum and cerium; and a composition comprising iron oxide and niobium oxide. The above compositions are particularly useful as catalytic compositions for the conversion of C.sub.3 and C.sub.4 hydrocarbons to less saturated hydrocarbons, particularly ethylene and propylene and preferably ethylene, in the presence of steam. The steam substantially increases the active life of the catalytic composition, before regeneration is necessary, as well as significantly increasing the selectivity of ethylene. Limiting the amount of bound or fixed sulfur in the catalytic compositions also improves the catalysts.
摘要:
A solid composition of matter consisting essentially of:(a) a component comprising: (1) at least one metal selected from the group consisting of Group IA metals and compounds containing said metals and (2), optionally, at least one material selected from the group consisting of tin, compounds containing tin, chloride ions and compounds containing said chloride ions and(b) a component comprising at least one metal selected from the group consisting of Group IIA metals and compounds containing said metals.The composition is particularly useful as a contact material for the oxidative conversion of less valuable organic compounds to more valuable organic compounds, particularly in the presence of a free oxygen containing gas. A method for converting feed organic compounds to product organic compounds, in the presence of a free oxygen containing gas, utilizing the above composition, as well as combinations of tin and a Group IIA metal and of tin, chloride ions and a Group IIA metal is disclosed, particularly the oxidative dehydrogenation of C.sub.2 to C.sub.7 alkanes to olefins.