V/Zr-MOF catalyst for preparing phenol from benzene through direct hydroxylation and preparation method of V/Zr-MOF catalyst

A catalyst and hydroxylation technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. The problem of low atom utilization, etc., to achieve the effects of easy separation, good catalytic activity, and simple preparation method

Inactive Publication Date: 2019-01-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, the method of producing phenol in most factories is mainly the cumene method, which has the following four shortcomings: ① three steps are required for the synthesis route, and the reaction process is long; ② the utilization rate of atoms is not high, and it is not environmentally friendly; ③ phenol The purity is higher, but the yield is low (<5%), which cannot achieve the gre

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  • V/Zr-MOF catalyst for preparing phenol from benzene through direct hydroxylation and preparation method of V/Zr-MOF catalyst
  • V/Zr-MOF catalyst for preparing phenol from benzene through direct hydroxylation and preparation method of V/Zr-MOF catalyst
  • V/Zr-MOF catalyst for preparing phenol from benzene through direct hydroxylation and preparation method of V/Zr-MOF catalyst

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Embodiment 1

[0022] Take 0.8478 g of ZrCl 4 Dissolve in 150 mL of DMF until clear to obtain A; add 5.7 mL of glacial acetic acid dropwise to the clear solution A, stir at 55°C for 20 min to obtain B; then take 0.622 g of 2-amino p- Dissolve phthalic acid in a certain amount of DMF until it becomes clear, then add 0.25 mL of distilled water, and add the mixed solution dropwise to the above mixed solution B to obtain C; finally, take 0.3 g of vanadyl acetylacetonate and dissolve it in a certain Measure the DMF solution until it is clear, and add it dropwise to the mixed solution C to obtain D; after the mixed solution D is continuously stirred at 120°C for 24 h, it is washed with DMF and ethanol and dried respectively to obtain the vanadium-zirconium catalyst.

[0023] The prepared catalyst was used in the hydroxylation reaction of benzene. 50 mg of catalyst, 1 mL of benzene (0.84 g), 3 mL of 70 vol.% acetic acid solution, and 0.7 g of ascorbic acid were added to a 10 mL autoclave, and a 3 M...

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Abstract

The invention provides a V/Zr-MOF catalyst for preparing phenol from benzene through direct hydroxylation and a preparation method of the V/Zr-MOF catalyst. Vanadium(IV)oxy acetylacetonate (VO(acac)2)is used as an active center; an organic metal framework Zr-MOF(UiO-66-NH2) is used as a catalyst carrier; the vanadium-zirconium compounded heterogeneous catalyst is prepared by a one-step method, wherein the active ingredient of vanadium(IV)oxy acetylacetonate is loaded onto the Zr-MOF through C=N double bonds, so that the vanadium-zirconium catalyst is obtained. The preparation process of the catalyst in the process of preparing phenol from benzene through direct hydroxylation is simplified; the stability of the catalyst is improved; the prepared catalyst shows good activity and high selectivity in the reaction; the yield of the reaction for preparing phenol from benzene is improved.

Description

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Claims

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Application Information

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Owner SHAANXI UNIV OF SCI & TECH
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