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Metal organic framework loaded solid heteropolyacid oxidative desulfurization catalyst as well as preparation method and application thereof

A metal-organic framework, solid heteropolyacid technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of uneven distribution and dispersion of POMs@MOFs In order to avoid the loss of catalyst active centers and reduce the catalytic activity

Active Publication Date: 2021-07-09
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention aims to solve the problem that the existing POMs are difficult to recycle and reuse when used alone, while the existing POMs@MOFs have uneven distribution, low dispersion, and are easy to agglomerate, and POMs may block the pores of MOFs, or POMs in the catalytic process The problem of easy loss, and provide a metal organic framework-supported solid heteropolyacid oxidative desulfurization catalyst and its preparation method and application

Method used

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  • Metal organic framework loaded solid heteropolyacid oxidative desulfurization catalyst as well as preparation method and application thereof
  • Metal organic framework loaded solid heteropolyacid oxidative desulfurization catalyst as well as preparation method and application thereof
  • Metal organic framework loaded solid heteropolyacid oxidative desulfurization catalyst as well as preparation method and application thereof

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specific Embodiment approach 1

[0049] Embodiment 1: This embodiment is a metal-organic framework-supported solid heteropolyacid oxidative desulfurization catalyst, which is obtained by loading heteropolyacids in MOF; the MOF is rht-MOF-1; the The heteropolyacid is a Keggin type ternary phosphorus tungsten vanadium saturated heteropolyacid, and its general structure is H 3+n PW 12-n Vn o 40 ·nH 2 O, wherein n=1~3; or the heteropolyacid is a Keggin type ternary phosphomolybdenumtungsten saturated heteropolyacid, and its general structural formula is H 3 PMo (12-n) W n o 40 ·nH 2 O, wherein n=1~3; or described heteropolyacid is Keggin type ternary silicon molybdenum vanadium saturated heteropolyacid, and its general structural formula is H 3+n SiMo (12-n) V n o 40 ·nH 2 O, wherein n=1-3.

[0050] The heteropolyacid described in this specific embodiment is a crystalline heteropolyacid.

[0051] The general structural formula of the rht-MOF-1 described in this specific embodiment is [Cu 6 O(TZI) 3...

specific Embodiment approach 2

[0059] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the heteropolyacid is loaded in the MOF by encapsulation. Others are the same as the first embodiment.

specific Embodiment approach 3

[0060] Specific embodiment three: This embodiment is a method for preparing a metal-organic framework-supported solid heteropolyacid oxidative desulfurization catalyst, which is prepared according to the following steps:

[0061] Add copper chloride, 5-tetrazolium isophthalic acid, and heteropolyacid into the mixed solution of DMF and deionized water, heat for 4h to 8h at a temperature of 70°C to 80°C, and then drop to At room temperature, a blue-green polyhedral crystal catalyst is obtained, that is, a metal-organic framework-supported solid heteropolyacid oxidative desulfurization catalyst;

[0062] The heteropolyacid is a Keggin type ternary phosphorus tungsten vanadium saturated heteropolyacid, and its general structural formula is H 3+n PW 12-n V n o 40 ·nH 2 O, wherein n=1~3; or the heteropolyacid is a Keggin type ternary phosphomolybdenumtungsten saturated heteropolyacid, and its general structural formula is H 3 PMo (12-n) W n o 40 ·nH 2 O, wherein n=1~3; or d...

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Abstract

The invention discloses a metal organic framework loaded solid heteropolyacid oxidative desulfurization catalyst as well as a preparation method and application thereof, and relates to an oxidative desulfurization catalyst as well as a preparation method and application thereof. The invention aims to solve the problems that the existing POMs are difficult to recycle when being independently used, and the existing POMs@MOFs are non-uniform in distribution, low in dispersity and easy to agglomerate, and the POMs may block pore channels of the MOFs, or the POMs are easy to lose in a catalysis process. The catalyst is obtained by loading heteropoly acid in MOF (Metal Organic Framework), and the MOF is rht-MOF-1; and the heteropoly acid is a Keggin type heteropoly acid. The preparation method comprises the following steps: adding copper chloride, 5-tetrazole isophthalic acid and heteropoly acid into a mixed solution of DMF and deionized water, heating, and cooling to room temperature. The catalyst is applied to an extraction catalytic oxidation desulfurization system and is used for removing sulfur.

Description

technical field [0001] The invention relates to an oxidation desulfurization catalyst and its preparation method and application. Background technique [0002] With the development of the economy, the contradiction between energy utilization and environmental pollution has become increasingly prominent. At present, smog has become one of the most prominent problems in environmental pollution. The main cause of smog is the combustion of fuel oil. During the combustion process of oil products, a large amount of sulfur dioxide gas will be emitted. The emission of sulfur-containing gas is harmful to the environment and forms acid rain through chemical processes, causing buildings and plants to be corroded, thus causing serious harm to people. Life brings inconvenience. Therefore, the desulfurization of sulfur compounds in oil is very important for building a good living environment. In the face of increasingly stringent low-sulfur and sulfur-containing standards for fuel oil,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J31/18C10G27/12C10G53/14
CPCB01J31/1691B01J31/34B01J31/2243C10G27/12C10G53/14B01J2531/0241B01J2523/17C10G2300/70C10G2300/202
Inventor 李光明辛玉香柏艺洋刘嘉彬马黎强魏朋朋孙靖文
Owner HEILONGJIANG UNIV
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