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Superionic conductor type multifunctional catalytic material as well as preparation method and application thereof

A multifunctional catalysis, superionic technology, applied in chemical instruments and methods, preparation of organic compounds, preparation of carboxylic acid esters, etc., can solve the problems of methanol and methyl acetate cracking, difficult to carry out, etc., and achieves simple modification method and synthesis. Simple process and simple preparation method

Active Publication Date: 2019-02-22
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

Therefore, the designed catalyst needs to have multiple functions, not only having methanol dehydrogenation activity, but also being able to promote aldol condensation. At the same time, it is also necessary to comprehensively consider the limitations of the reaction conditions on the selected catalyst. For example, the reaction temperature of the dehydrogenation catalyst should be consistent with the subsequent aldol condensation. Condensation matches, the temperature is too low, methanol dehydrogenation and subsequent aldol condensation are difficult to carry out, and high temperature easily leads to cracking of methanol and methyl acetate

Method used

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  • Superionic conductor type multifunctional catalytic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Preparation of superionic conductor catalyst

[0024] (1) NASICON type Me 1-x Ti 2 (PO 4 ) 3-x (SO 4 ) x material preparation

[0025] 9.2g titanyl sulfate-sulfuric acid hydrate (≥29%Ti(as TiO 2 ) basis, ≤17% free acid (asH 2 SO 4) was dissolved in 20 g of distilled water, then 8 g of 30% hydrogen peroxide and 6.0 g of polyethylene glycol 20000 (PEG20000) were added in sequence, and stirred evenly. Thereafter, 6.0 g of concentrated phosphoric acid with a concentration of 85% was slowly added dropwise with vigorous stirring. Afterwards, the colloidal solution was dried in a vacuum oven at 60 °C for 12 h. The dried sample is placed in a muffle furnace, heated to 600°C at a rate of 2°C / min, and roasted for 6 hours to obtain NASICON type H 0.08 Ti 2 (PO 4 ) 2.08 (SO 4 ) 0.92 Raw material powder.

[0026] (2) Preparation of V-modified NASICON catalysts

[0027] (A) Using equal volume impregnation method, the H prepared in 3g step (1) 0.08 Ti 2 (PO 4 )...

Embodiment 2

[0032] 1. Preparation of superionic conductor catalyst

[0033] (1) NASICON type Me 1-x Ti 2 (PO 4 ) 3-x (SO 4 ) x material preparation

[0034] 9.2g titanyl sulfate-sulfuric acid hydrate (≥29%Ti(as TiO 2 ) basis, ≤17% free acid (asH 2 SO 4 ) was dissolved in 15 g of distilled water, then 6 g of 30% hydrogen peroxide and 7.5 g of polyethylene glycol 20000 (PEG20000) were added in sequence, and stirred evenly. Then, 7.2 g of 85% concentrated phosphoric acid was slowly added dropwise and stirred vigorously. Afterwards, the colloidal solution was dried in a vacuum oven at 80°C for 16 h. The dried sample is placed in a muffle furnace, heated to 600°C at a rate of 4°C / min, and fired for 6 hours to obtain NASICON type H 0.5 Ti 2 (PO 4 ) 2.5 (SO 4 ) 0.5 Raw material powder.

[0035] (2) Preparation of V-modified NASICON catalysts

[0036] (A) Using equal volume impregnation method, the H prepared in 3g step (1) 0.5 Ti 2 (PO 4 ) 2.5 (SO 4 ) 0.5 The original pow...

Embodiment 3

[0041] 1. Preparation of superionic conductor catalyst

[0042] (1) NASICON type Me 1-x Ti 2 (PO 4 ) 3-x (SO 4 ) x material preparation

[0043] 9.2g titanyl sulfate-sulfuric acid hydrate (≥29%Ti(as TiO 2 ) basis, ≤17% free acid (asH 2 SO 4 ) was dissolved in 10 g of distilled water, then 7 g of 30% hydrogen peroxide, 4.85 g of nickel acetate, and 6.5 g of polyethylene glycol 20000 (PEG20000) were added in sequence, and stirred evenly. Then, 6.9 g of 85% concentrated phosphoric acid was slowly added dropwise and stirred vigorously. Afterwards, the colloid solution was dried in a vacuum oven at 70 °C for 18 h. The dried sample is placed in a muffle furnace, heated to 550°C at a rate of 3°C / min, and fired for 4 hours to obtain NASICON-type Ni 0.39 Ti 2 (PO 4 ) 2.39 (SO 4 ) 0.61 Raw material powder.

[0044] (2) Preparation of V-modified NASICON catalysts

[0045] (A) Using the equal volume impregnation method, the Ni prepared in the 3g step (1) 0.39 Ti 2 (PO ...

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Abstract

The invention discloses a superionic conductor type multifunctional catalytic material which comprises an NASICON (Sodium Super Ionic Conductor) type Me(1-x)Ti2(PO4)3-x(SO4)x catalytic host material and a V metallic oxide. The multifunctional catalytic material comprises the following components in percentage by mass: 85-99.5% of Me(1-x)Ti2(PO4)3-x(SO4)x and 0.5-15% of V2O5, wherein Me in the material Me(1-x)Ti2(PO4)3-x(SO4)x is one of H, Cu and Ni or a mixture of Cu and Ni, and x is equal to 0.5-1. The superionic conductor type multifunctional catalytic material disclosed by the invention hasthe advantages of high activity, excellent selectivity, low cost and low toxicity.

Description

technical field [0001] The invention relates to a superionic conductor type multifunctional catalytic material, a preparation method and an application. Background technique [0002] An important branch of coal conversion is the conversion of coal to fuels (such as olefins, aromatics, isomeric hydrocarbons, etc.) and dehydrogenation to oxygenates (methyl formate, acetic acid (methyl ester), acetal, etc.) through methanol dehydration. Among them, the conversion of methanol to oxygenates has attracted extensive attention due to its high atom utilization. The current production capacity of acetic acid (methyl ester), which is a product of methanol carbonylation and a by-product of petrochemical industry, is also severely overcapacitated, and it is urgent to convert it into other high value-added chemicals. [0003] Acrylic acid and its esters are bulk raw materials in the chemical industry. Due to their bifunctional structure (unsaturated double bond and carboxyl group), they ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/198C07C69/54C07C67/343
CPCB01J27/198C07C67/343C07C69/54
Inventor 张俊峰谭猗生韩怡卓解红娟
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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