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A kind of co-based composite metal oxide catalyst and application

A composite metal and oxide technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical/physical process, etc., can solve problems such as C-C bond breaking

Active Publication Date: 2018-08-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the breakage of a large number of C-C bonds

Method used

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  • A kind of co-based composite metal oxide catalyst and application
  • A kind of co-based composite metal oxide catalyst and application
  • A kind of co-based composite metal oxide catalyst and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0026] Step A: Measure 250mL of deionized water into a four-neck flask, accurately weigh out and add Cu(NO 3 ) 2 ·6H2O, Co(NO3)2·6H 2 O, Mg(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 ·9H 2 O, Na 2 CO 3 , NaOH, the corresponding concentration is 0.2mmol·L -1 , 0.2mmol·L -1 , 0.2mmol·L -1 , 0.2mmol·L -1 , 0.1mmol·L -1 And 0.20mmol·L -1 , Stirring and co-precipitating in a three-necked flask, using magnetic stirring for 12h. After the reaction, it was washed with suction filtration with deionized water 5 times, and washed with anhydrous ethanol for 1 time, and placed in an oven to dry overnight. Obtain CuCoMgAl-LDH (Cu:Co:Mg:Al=1:1:1:1).

[0027] Step B: CuCoMgAl-LDH (Cu:Co:Mg:Al=1:1:1:1) precursor in H 2 Reduce in the atmosphere at 800℃ for 0.5h to obtain the catalyst CuCo-MgO-MgAl 2 O 4 .

[0028] Add 0.2520 g of 5-hydroxymethyl furfural (HMF), 1.850 g of acetone, 0.05 g of catalyst, and 15 mL of deionized water to the autoclave, and install the autoclave. The autoclave is heated to a preset te...

Embodiment 3

[0030] Step A: Measure 250mL of deionized water into a four-neck flask, accurately weigh out and add Cu(NO 3 ) 2 ·6H2O, Co(NO3)2·6H 2 O, Mg(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 ·9H 2 O, Na 2 CO 3 , NaOH, the corresponding concentration is 0.2mmol·L -1 , 0.2mmol·L -1 , 0.2mmol·L -1 , 0.2mmol·L -1 , 0.1mmol·L -1 And 0.20mmol·L -1 , Stirring and co-precipitating in a three-necked flask, using magnetic stirring for 12h. After the reaction, it was washed with suction filtration with deionized water 5 times, and washed with anhydrous ethanol for 1 time, and placed in an oven to dry overnight. Obtain CuCoMgAl-LDH (Cu:Co:Mg:Al=1:1:1:1).

[0031] Step B: CuCoMgAl-LDH (Cu:Co:Mg:Al=1:1:1:1) precursor in H 2 Reduced in the atmosphere at 800℃ for 5h, the catalyst CuCo-MgO-MgAl is obtained 2 O 4 .

[0032] Add 0.332g of HMFA, 0.1g of catalyst, 15mL of ethanol or cyclohexane into the inner lining of the autoclave, install the autoclave, and charge H from the air inlet 2 , Replace the air in the autoclav...

Embodiment 4

[0034] Step A: Measure 250mL of deionized water into a four-neck flask, accurately weigh out and add Cu(NO 3 ) 2 ·6H2O, Co(NO3)2·6H 2 O, Mg(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 ·9H 2 O, ZrO(NO 3 ) 2 ·XH 2 O, Na 2 CO 3 , NaOH, the corresponding concentration is 0.1mmol·L -1 , 0.4mmol·L -1 , 0.2mmol·L -1 , 0.2mmol·L -1 , 0.1mmol·L -1 , 0.1mmol·L -1 And 0.20mmol·L -1 , Stirring and co-precipitating in a three-necked flask, using magnetic stirring for 12h. After the reaction, it was washed with suction filtration with deionized water 5 times, and washed with anhydrous ethanol for 1 time, and placed in an oven to dry overnight. Obtain CuCoMgAlZr-LDH (Cu:Co:Mg:Al:Zr=1:4:2:2:1).

[0035] Step B: CuCoMgAlZr-LDH (Cu:Co:Mg:Al:Zr=1:4:2:2:1) precursor in H 2 Reduced in the atmosphere at 850℃ for 5h, the catalyst CuCo is obtained 4 -MgO-MgAl 2-x Zr x O 4 .

[0036] Add 0.2520 g of 5-hydroxymethyl furfural (HMF), 1.850 g of acetone, 0.05 g of catalyst, 5 mL of ethanol, and 5 mL of cyclohexane to the au...

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Abstract

A Co-based composite metal oxide catalyst and its application belong to the field of biomass reforming catalysis. Use hydrogen to replace the air in the reactor and adjust the pressure. Add the substrate 5-hydroxymethylfurfural with a mass fraction of 1 to 10 wt%. Use a Co-based composite metal oxide catalyst. The amount of catalyst added is the same as the added 5-hydroxymethylfurfural. The mass ratio is 0.5:1~3:1, the reaction temperature is 30~280℃, the reaction pressure is 0.5~4MPa, the reaction time is 1~72h, the reaction solvent is water or at least one of ethanol or cyclohexane; contains CuCo The catalyst is composed of uniformly dispersed metal active center nanoparticles and an oxide obtained by calcining hydrotalcite. The metal active center is at least one of Co or CuCo, and the non-metal acid-base active center is a composite metal oxide. The catalyst of the invention is cheap and efficient.

Description

Technical field [0001] The invention belongs to the technical field of biomass reforming catalysis, and in particular provides a high-efficiency multifunctional catalysis of 5-hydroxymethyl furfural through carbon chain growth liquid phase reforming into C 9 Catalyst for hydrocarbons. Background technique [0002] The increasing demand for fossil resources is accompanied by the reduction of non-renewable resources. To maintain modern civilization, alternative energy sources must be found to continue to provide energy and chemicals. Biomass as a renewable energy source is the only source of sustainable energy and organic carbon. Using simple chemical methods, biomass can be converted into platform chemical 5-hydroxymethylfurfural (HMF), which can be used as an important platform intermediate to produce biofuels. However, 5-hydroxymethyl furfural (HMF) only contains 6 C, so the carbon chain needs to be increased to meet fuel demand. [0003] 5-Hydroxymethylfurfural (HMF) is convert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75C10G45/00
CPCC10G45/00B01J23/75B01J35/399
Inventor 何静邹云飞安哲
Owner BEIJING UNIV OF CHEM TECH