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What isclaimedis: 17 18 11.A methodofpreparingmethanolfromcarbondioxide, Water and a methane source Which comprises: conductingabi-refor'mingreactionbyprovidingmethane, Water and carbon dioxide in a mole ratio of 3:1:2 as the only reactants as folloWs: 3CH4+2H2O+CO2; reacting the methane, Water and carbon dioxide from the bireformingreactionWithoutseparationofthereactants or their ef?uents to produce an exclusive mixture of hydrogen and carbon monoxide in a mole ratio of 2:1 to 2.1:1;and reacting the mixture of hydrogen and carbon monoxide under conditions suf?cient to exclusively form metha nol. 12.Themethodofclaim11,Whereinthereactionofmeth ane, Water and carbon dioxide is conducted in a single step. 13.Themethodofclaim11,Whereinthereactionofmeth ane, Water and carbon dioxide is conducted by: Wet reforming of methane from the reaction of a methane 1.A methodofpreparingmethanolfromcarbondioxide, Water and a methane source Which comprises: conductingabi-reformingreaction,Whereintheonlyreac tantsaremethane,carbondioxideandWaterinamole 5 ratioofabout3:1:2asfollows:3CH4+2H2O+CO2 by: conductingWetreformingofmethanefromthemethane source With Water to form carbon monoxide and hydrogen as folloWs: conductingdryreformingofmethanefromthemethane source With carbon dioxide to form carbon monoxide and hydrogen as folloWs: combining ef?uents consisting of the carbon monoxide andhydrogenfromtheWetanddryreformingreactions Withoutseparationofcomponentsofthereformingreac tions or their ef?uents to produce a mixture of hydrogen and carbon monoxide having a molar ratio of hydrogen to carbon monoxide that is 2:1 to 2.1:1; and convertingthemolarmixtureofhydrogenandcarbonmon 25 oxide under conditions su?icient to exclusively form methanol, as folloWs: 30 35 4.Themethodofclaim2,Whereinthecombinedbi-reform ing step is conducted at a temperature of about 800 to 11000 C. source With Water to form carbon monoxide and hydro gen as folloWs: dry reforming of methane from a methane source With carbon dioxide to form carbon monoxide and hydrogen as folloWs: combiningef?uentsoftheWetreforminganddryreform ing reactions to obtain the mixture of hydrogen and carbonmonoxide. 2. The method of claim 1, Wherein the methane, carbon dioxide and Water are reacted in the single step. 3. The method of claim 2, Wherein the molar mixture of hydrogen and carbon monoxide is present at a mole ratio of 2.05 to 1. 14.Themethodofclaim12,Whereinthemolarmixtureof hydrogen and carbon monoxide is present at a mole ratio of 2.05 to 1. 15. The method of claim 12, Wherein the single bi-reform ing step is conducted at a temperature of about 800 to 11000 C 16.Themethodofclaim11,Whereinthereactingofmeth ane, Water and carbon dioxide is conducted Without any sig ni?cant coke formation. 17.Themethodofclaim11,Whereinthereactingofmeth ane,Waterandcarbondioxideisconductedinthepresenceof a combination of metal and metal oxide catalysts. 18. The method of claim 17, Wherein the catalyst combi nation is Ni and V2O5; Ni2O3 and V205; or Ni2V2O7 and Ni3V2O8. 19. The method of claim 18, Wherein the catalyst combi nation is supported on a high surface or nanostructured sup port. 20.Themethodofclaim19,Whereinthesupportcomprises silica,alumina,ametaloxideorametal. * * * * * 5. The method of claim 2, Wherein the bi-refor'ming is conducted Without any signi?cant coke formation. 40 6. The method of claim 2, Wherein the bi-refor'ming is conducted in the presence of a combination of metal and metaloxidecatalysts. 7.Themethodofclaim6,Whereinthecatalystcombination isNiandV205;Ni2O3andV205;orNi2V2O7andNi3V2O8. 45 8.Themethodofclaim7,Whereinthecatalystcombination is supported on a high surface or nanostructured support. 9. The method of claim 8, Wherein the support comprises silica, alumina, a metal oxide or a metal. 10.Themethodofclaim1,Whereinthemethanesource 50 includes any conventional natural gas. US 8,440,729B2PDF Image | CONVERSION OF CARBON DIOXIDE TO METHANOL BIOREFORMING
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