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Mixed metal oxide catalysts for direct co2 hydrogenation to methanol

A mixed metal and oxide technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, preparation of hydroxyl compounds, etc.

Inactive Publication Date: 2018-08-21
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] have been found to solve the problems associated with the production of methanol from carbon dioxide

Method used

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  • Mixed metal oxide catalysts for direct co2 hydrogenation to methanol
  • Mixed metal oxide catalysts for direct co2 hydrogenation to methanol
  • Mixed metal oxide catalysts for direct co2 hydrogenation to methanol

Examples

Experimental program
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Effect test

Embodiment 1

[0069] (Synthesis of Cu / Zn / Zr / Ce / Y)

[0070] A catalyst with an atomic ratio of copper, zinc, zirconium, cerium and yttrium of 55:10:15:10:10 was prepared by gel oxalate co-precipitation using 20% ​​excess oxalic acid. Two separate solutions were prepared (i) nitrate mixture (6.27 g copper(II) nitrate trihydrate, 1.36 g zinc nitrate hexahydrate and 1.14 g zirconyl(IV) nitrate hydrate, 0.93 g cerium(III) nitrate hexahydrate hydrate and 1.29 g of yttrium (III) nitrate hexahydrate) and (ii) oxalic acid (6.12 g) dissolved in ethanol. Under vigorous stirring, the two solutions were slowly mixed at room temperature. The formed precipitate was centrifuged at 5000 rpm for 15 minutes and then dried overnight at 110° C. to form a catalyst precursor. The catalyst precursor was calcined at 350° C. for 4 hours to obtain the mixed metal catalyst of the present invention.

Embodiment 2

[0072] (Synthesis of Cu / Zn / Zr / Ce / Y)

[0073] A catalyst with an atomic ratio of copper, zinc, zirconium, cerium and yttrium of 60:20:10:5:5 was prepared by co-precipitation of gel oxalate using 20% ​​excess oxalic acid. Two separate solutions were prepared (i) nitrate mixture (6.84 g copper(II) nitrate trihydrate, 2.73 g zinc nitrate hexahydrate and 0.76 g zirconyl(IV) nitrate hydrate, 0.46 g cerium(III) nitrate hexahydrate hydrate and 0.65 g of yttrium (III) nitrate hexahydrate) and (ii) oxalic acid (6.55 g) dissolved in ethanol. Under vigorous stirring, the two solutions were slowly mixed at room temperature. The formed precipitate was centrifuged at 5000 rpm for 15 minutes and then dried overnight at 110° C. to form a catalyst precursor. The catalyst precursor was calcined at 350° C. for 4 hours to obtain the mixed metal catalyst of the present invention. Catalyst particle size was calculated from the XRD results according to the Scherrer formula and it was found that Cu...

Embodiment 3

[0075] (Synthesis of Cu / Zn / Zr / Ce / Y)

[0076]A catalyst with an atomic ratio of copper, zinc, zirconium, cerium, and yttrium of 60:15:10:5:10 was prepared by gel oxalate co-precipitation using an excess of 20% oxalic acid. Two separate solutions were prepared (i) nitrate mixture (6.84 g copper(II) nitrate trihydrate, 2.05 g zinc nitrate hexahydrate and 0.76 g zirconyl(IV) nitrate hydrate, 0.46 g cerium(III) nitrate hexahydrate hydrate and 1.29 g of yttrium (III) nitrate hexahydrate) and (ii) oxalic acid (6.42 g) dissolved in ethanol. Under vigorous stirring, the two solutions were slowly mixed at room temperature. The formed precipitate was centrifuged at 5000 rpm for 15 minutes and then dried overnight at 110° C. to form a catalyst precursor. The catalyst precursor was calcined at 350° C. for 4 hours to obtain the mixed metal catalyst of the present invention.

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Abstract

Mixed metal oxide catalysts capable of catalyzing hydrogenation of carbon dioxide to methanol reaction are disclosed, as well as a method for producing methanol from carbon dioxide and hydrogen. The mixed metal oxide catalysts include copper (Cu), and M1 and M2 oxides. M1 can be zinc (Zn), zirconium (Zr), or cerium (Ce), or any combination thereof, and M2 can be yttrium (Y), barium (Ba), rubidium(Rb), terbium (Tb), strontium (Sr), or molybdenum (Mo), or any combination thereof, with the proviso that M2 is not Y when the mixed metal oxide catalyst is [Cu / Zn / M2 ]0n or [Cu / Zr / M2]0n, where n is determined by the oxidation states of the other elements.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to US Provisional Patent Application No. 62 / 232,039, filed September 24, 2015, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention generally relates to catalysts capable of catalyzing hydrogenation reactions that directly hydrogenate carbon dioxide to produce methanol. In particular, multicomponent heterogeneous catalyst compositions containing mixed metal oxides are used to catalyze the production of methanol from carbon dioxide. The catalyst has good activity and selectivity. By-products from the reaction can be minimized as carbon monoxide and water. Background technique [0004] carbon dioxide (CO 2 ) are primarily produced as waste by-products of oil refineries, fossil fuel combustion, and chemical production. Many sources of natural gas contain carbon dioxide in significant concentrations (up to 50% b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/154C07C31/04B01J23/83B01J37/03B01J37/08B01J37/18B01J35/00B01J37/00
CPCB01J37/036B01J37/086B01J37/18B01J23/002B01J23/83B01J37/0036B01J2523/00Y02P20/52C07C29/154B01J2235/15B01J2523/17B01J2523/27B01J2523/3706B01J2523/3712B01J2523/48B01J2523/36B01J2523/25B01J2523/14B01J2523/3756B01J2523/24C07C31/04B01J35/393B01J37/031B01J37/04B01J37/08
Inventor 哈利德·A·阿尔穆萨伊特艾哈迈德·阿尔-哈德拉米阿卜杜勒阿齐兹·汗阿卜杜勒阿齐兹·阿尔-阿米尔
Owner SABIC GLOBAL TECH BV