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Catalyst for alcohol-alcohol condensation reaction, preparation method and application thereof

A condensation reaction and catalyst technology, applied in the field of catalysts, can solve problems such as the mismatch of active centers on the catalyst, and achieve the effects of extending the methanol industry chain, high conversion rate, and low production cost

Active Publication Date: 2020-12-25
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned catalysts still have many problems in terms of catalyst activity, selectivity and stability, the main reason is that the active centers on the catalyst do not match

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 0.53g Cu(NO 3 )2 .3H 2 O, 38.62g Mg(NO 3 ) 2 .6H 2 O, 16.96g Al(NO 3 ) 3 .9H 2 O and 0.87gCe(NO 3 ) 3 ·6H 2 O was dissolved in 400ml deionized water to obtain solution A with a total concentration of metal ions of 0.5mol / L. Combine 56.1gKOH and 69.1gK 2 CO 3 Dissolve in 1000ml deionized water to obtain OH- ion concentration of 1mol / L, CO 3 2- Solution B with a concentration of 0.5 mol / L. Under stirring conditions, at a temperature of 50° C. and a pH of 9.5, A and B co-precipitate to obtain slurry C. Slurry C was dynamically crystallized under hydrothermal conditions at 80° C. for 10 h to obtain slurry D. The slurry D was filtered, washed and dried at 120°C for 10 hours, and then calcined at 750°C for 4 hours to obtain the desired catalyst. The molar composition of the catalyst was: Cu:Mg:Al:Ce=1.1:75.3:22.6:1.

[0035] Above-mentioned catalyzer is applied to tubular fixed-bed reactor: before reaction, in containing 5v%H 2 Under a nitrogen atmosphere, th...

Embodiment 2

[0037] 3.92g Ni(NO 3 ) 2 .6H 2 O, 80.19g Mg(NO 3 ) 2 .6H 2 O, 39.16g Al(NO 3 ) 3 .9H 2 O and 8.31gZr(NO 3 ) 4 ·5H 2 O was dissolved in 300ml deionized water to obtain solution A with a total concentration of metal ions of 1.5mol / L. Combine 67.32gKOH and 82.92gK 2 CO 3 Dissolve in 800ml deionized water to obtain OH- ion concentration of 1.5mol / L, CO 3 2- Solution B with a concentration of 0.75 mol / L. Under stirring conditions, at a temperature of 60° C. and a pH of 10.0, A and B co-precipitate to obtain a slurry C. Slurry C was dynamically crystallized under hydrothermal conditions at 120° C. for 15 hours to obtain slurry D. The slurry D was filtered, washed and dried at 100°C for 20 hours, and then calcined at 450°C for 5 hours to obtain the desired catalyst. The molar composition of the catalyst was: Ni:Mg:Al:Zr=3:69.5:23.2:4.3.

[0038] Apply above-mentioned catalyzer to tubular fixed-bed reactor: before reaction, in containing 8v%H 2 Under the argon atmosp...

Embodiment 3

[0040] 1.49g Cu(NO 3 ) 2 .3H 2 O, 1.79g Co(NO 3 ) 2 .6H 2 Og, 46.24gMg (NO 3 ) 2 .6H 2 O, 15.41g Al(NO 3 ) 3 .9H 2 O and 5.33g La(NO 3 ) 3 ·6H 2 O was dissolved in 410ml of deionized water to obtain solution A with a total concentration of metal ions of 0.6mol / L. Combine 40.00gNaOH and 53.00gNa 2 CO 3 Dissolve in 500ml deionized water to obtain OH- ion concentration of 2mol / L, CO 3 2- Solution B with a concentration of 1 mol / L. Under stirring conditions, at a temperature of 65° C. and a pH of 10.2, A and B co-precipitate to obtain slurry C. Slurry C was dynamically crystallized under hydrothermal conditions at 100° C. for 12 hours to obtain slurry D. The slurry D was filtered, washed, dried at 110°C for 15 hours, and then calcined at 600°C for 5 hours to obtain the desired catalyst. The molar composition of the catalyst was: (Cu+Co):Mg:Al:Zr=5:73.3:16.7:5.

[0041] Apply above-mentioned catalyzer to tubular fixed-bed reactor: before reaction, in containing ...

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PUM

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Abstract

The invention discloses a catalyst alcohol alcohol condensation reaction. The catalyst comprises a mixed metallic oxide of M1, Mg, Al and M2, and the molar ratio of catalyst elements is as follows: M1: Mg: Al: M2 is equal to (1-5): (70-80): (15-25): (1-5). M1 is one or more in copper, nickel, cobalt or zinc, and M2 is one in iron, cerium, zirconium or lanthanum. The catalyst has the advantages ofhigh activity and good selectivity and stability.

Description

technical field [0001] The invention relates to a catalyst for alcohol-alcohol condensation reaction, its preparation method and application. [0002] technical background [0003] Methanol is an important chemical basic product. As a hydrocarbon carrier, it has gradually become a bridge and link for the clean and efficient utilization of carbon resources such as coal, natural gas and biomass. However, in recent years, the rapid expansion of the methanol industry has led to serious overcapacity. my country's current methanol production capacity is 60 million tons per year, and the operating rate is less than 60%. Therefore, accelerating the development and industrialization of methanol downstream technology, and upgrading and extending the industry value chain through high value-added downstream products have become crucial to the development of the methanol industry. [0004] At present, methanol downstream technology can be divided into two categories, one is methanol conv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/06B01J23/745B01J23/75B01J23/755B01J23/83C07C29/60C07C31/10C07C31/125C07C31/12
CPCB01J23/002B01J23/06B01J23/745B01J23/75B01J23/755B01J23/83B01J2523/00C07C29/60B01J2523/17B01J2523/22B01J2523/31B01J2523/3712B01J2523/48B01J2523/847B01J2523/845B01J2523/27C07C31/10C07C31/12C07C31/125
Inventor 李德宝郭荷芹贾丽涛侯博肖勇
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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