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Method and device for synthesizing isobutanol through hydrogenation of carbon monoxide

A carbon monoxide and isobutanol technology, applied in chemical instruments and methods, preparation of organic compounds, preparation of hydroxyl compounds, etc., can solve the problems of complex reaction process and difficulty in industrialization, and achieve simple process, strong operability, and economical improvement sexual effect

Inactive Publication Date: 2011-09-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the raw materials are cheap and easy to obtain, and have broken through the dependence on propylene, the reaction process is complex and not easy to industrialize

Method used

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  • Method and device for synthesizing isobutanol through hydrogenation of carbon monoxide
  • Method and device for synthesizing isobutanol through hydrogenation of carbon monoxide
  • Method and device for synthesizing isobutanol through hydrogenation of carbon monoxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: the preparation of Cu-Zn-Al methanol catalyst

[0040] Put 40.11g Cu(NO 3 ) 2 ·3H 2 O, 16.06g Zn(NO 3 ) 2 ·6H 2 O and 30.01gAl(NO 3 ) 3 9H 2 O was dissolved in 200ml of deionized water, and under heating and stirring, 0.5M KOH aqueous solution was co-precipitated with the above mixed solution to maintain pH=7.5-8.0. The precipitate was aged for 10 hours, and then the precipitate was filtered and washed repeatedly with deionized water until neutral. Dry at 120°C for 10 hours, sieve into 20-40 meshes, and bake at 400°C for 4 hours to obtain the prepared catalyst.

Embodiment 2

[0041] Embodiment 2: The preparation of low-carbon mixed alcohol catalyst is divided into two different catalysts.

[0042] A, the preparation of the Cu-Co-Mn catalyst modulated by alkali metal:

[0043] Put 24.88g Cu(NO 3 ) 2 ·3H 2 O, 29.97g Co(NO 3 ) 2 ·6H 2 O and 36.86g containing 50% Mn(NO 3 ) 2 The aqueous solution was dissolved in 200ml of deionized water, and under heating and stirring, 0.5M KOH aqueous solution was used to co-precipitate with the above mixed solution to maintain pH=8.5-9.0. The precipitate was aged for 10 hours, and then the precipitate was filtered and washed repeatedly with deionized water until neutral. Dry at 120°C for 10 hours, sieve into 20-40 mesh, bake at 450°C for 4 hours, and then use a load of 0.5wt% K (K 2 CO 3 as the precursor) to impregnate mixed oxides, then dry and calcinate to obtain ready-to-use catalysts.

[0044] B, the preparation of the Cu-Co-Mg catalyst modulated by alkali metal:

[0045] Put 65.96g Cu(NO 3 ) 2 ·3H ...

Embodiment 3

[0046] Example 3: Pd-K / MnO 2 -ZrO 2 preparation of

[0047] 41.51g containing 50% Mn (NO 3 ) 2 aqueous solution and 49.80g Zr(NO 3 )·5H 2 O was dissolved in 200ml of deionized water, and under heating and stirring, 0.5M KOH aqueous solution was co-precipitated with the above mixed solution to maintain pH=8.5-9.0. The precipitate was aged for 10 hours, and then the precipitate was filtered and washed repeatedly with deionized water until neutral. Dry at 120°C for 10 hours, sieve into 20-40 mesh, and bake at 600°C for 4 hours to obtain MnO 2 -ZrO 2 Mixed oxides, and then respectively with a loading of 1.0wt% K (K 2 CO 3 precursor) and a loading of 2.0wt% Pd (Pd(NO 3 ) 2 2H 2 O is the precursor) impregnating MnO 2 -ZrO 2 The mixed oxides are then dried and calcined to obtain a spare catalyst.

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Abstract

The invention discloses a method for synthesizing isobutanol through hydrogenation of carbon monoxide. A dual catalyst bed reactor is adopted; and the method comprises the following steps of: 1) reducing an upper-layer catalyst and a lower-layer catalyst in the reactor in hydrogen, wherein the upper-layer reduction temperature is 200-400DEG C, the lower-layer reduction temperature is 300-500DEG C, the reduction pressure is 0.5-2.0Mpa, the reduction space velocity is 1,000-20,000h<-1>, the reduction time is 1-6 hours, the upper-layer catalyst is a methanol catalyst or a mixed alcohols synthesis catalyst, and the lower-layer catalyst is a Pd-K / MnO2-ZrO2 catalyst; 2) introducing a feed gas of H2 / CO into the dual catalyst bed reactor, wherein the upper-layer reaction temperature is 200-300DEG C, the lower-layer reaction temperature is 300-500DEG C, the reaction pressure is 5-15Mpa, and the reaction space velocity is 1,000-20,000h<-1>; and 3) cooling and collecting a reaction product.

Description

technical field [0001] The invention relates to a double-catalyst-bed reactor for synthesizing isobutanol by carbon monoxide hydrogenation. [0002] The present invention also relates to a method for synthesizing isobutanol by hydrogenating carbon monoxide using the above device. Background technique [0003] Isobutanol is a basic chemical raw material that can be used as a liquid fuel additive to increase the octane number of gasoline and reduce CO and NO in exhaust gas x and hydrocarbon emissions. In addition, isobutanol can also be used to manufacture antioxidants, plasticizers, paint solvents, synthetic rubber, and can replace n-butanol in furniture, automotive spray paint, plastic coating and other fields. At present, isobutanol production mainly comes from the hydrogenation of isobutyraldehyde by-product of propylene carbonylation to produce butanol / octanol plant. [0004] Chinese patent CN101225020A reports to mix C 4 Or isobutane is used as raw material to prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/12C07C29/152C07C29/157B01J8/04
Inventor 王涛丁云杰程显波
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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