Catalytic selective oxidation method for hydrocarbons

A technology for selective oxidation and hydrocarbons, applied in organic chemical methods, chemical instruments and methods, oxidation reaction preparation, etc., can solve the problems of low catalytic efficiency, non-wetting, difficult contact between raw materials and catalysts, etc. Effect

Active Publication Date: 2018-05-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the current metal oxide catalysts are hydrophilic, or are non-wetting to organic hydrocarbon raw materials, resulting in difficult contact between raw materials and catalysts, and low catalytic efficiency; there are also many deficiencies in the design of efficient catalytic active sites

Method used

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  • Catalytic selective oxidation method for hydrocarbons
  • Catalytic selective oxidation method for hydrocarbons
  • Catalytic selective oxidation method for hydrocarbons

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1: Preparation of material A (HA-CoO)

[0028] 1) 9mmol CoCl 2 ·6H 2 O was dissolved in mixed solvent 1 (n-hexane 21ml, deionized water 12ml, ethanol 9ml), after stirring for 5min, 18mmol sodium oleate was added, and reacted at reflux temperature for 4h. After the reaction, wash with 30ml deionized water, separate the liquid, take the organic phase, and evaporate the solvent to obtain cobalt oleate;

[0029] 2) Take 1 mmol from the cobalt oleate obtained in step 1, and dissolve it in a mixed solvent 2 of octanol and n-hexylamine (HA), wherein 20 ml of octanol and 5 ml of n-hexylamine; stir at room temperature until the solid is completely dissolved;

[0030] 3) Transfer the uniformly mixed reaction solution to a 50ml autoclave, the reaction temperature is 250°C, and the reaction time is 5h;

[0031] 4) Cool down to room temperature naturally, collect the solid by centrifugation; wash with ethanol 20-30 times; collect the solid dried at room temperature to ...

Embodiment 2

[0032] Embodiment 2: the preparation of material B-1

[0033] The preparation method of material B-I is the same as material A, the difference lies in the type of organic amine and the metal salt used to prepare the precursor.

[0034] Table 1 Types of metal salts and organic amines used in material B-I

[0035]

[0036]

Embodiment 3

[0037] Embodiment 3: material J (CuMn 2 o 4 ) preparation

[0038] 1) 9mmol CuCl 2 ·6H 2 O was dissolved in mixed solvent 1 (n-hexane 21ml, deionized water 12ml, ethanol 9ml), stirred for 5min, added 18mmol sodium oleate, and reacted at reflux temperature for 4h. After the reaction, wash with 30ml of deionized water, separate the liquid, take the organic phase, and remove the solvent by rotary evaporation to obtain copper oleate;

[0039] 2) 9mmol MnCl 2 ·6H 2O was dissolved in mixed solvent 1 (n-hexane 21ml, deionized water 12ml, ethanol 9ml), stirred for 5min, added 18mmol sodium oleate, and reacted at reflux temperature for 4h. After the reaction, wash with 30ml deionized water, separate the liquid, take the organic phase, and remove the solvent by rotary evaporation to obtain manganese oleate;

[0040] 3) Take 0.5mmol from the copper oleate obtained in step 1, take 1mmol from the manganese oleate obtained in step 2, mix and dissolve in the mixed solvent 2 of octanol...

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Abstract

The invention relates to a preparation method of a hydrocarbon selective oxidation catalyst and application thereof. The method uses long-chain organic amine as the modifier to modify a transition metal oxide nanomaterial to obtain an oxidation catalyst with the surface modified by long-chain organic amine. The catalyst has surface hydrophobicity and efficient catalytic oxidation ability. Air or O2 is adopted as the oxygen source, under a solvent-free condition, the catalyst is applied to the selective oxidation reaction of toluene, ethylbenzene, p-xylene, tetrahydronaphthalene, o-xylene and other hydrocarbons, and has high activity and high selectivity for selective oxidation preparation of alcohols, ketones, aldehydes and (or) acids and other organic oxygen-containing compounds.

Description

technical field [0001] The invention belongs to the preparation and application of nano-catalytic materials, which is to apply a long-chain organic amine-modified transition metal oxide nano-material to the catalytic selective oxidation reaction of hydrocarbons to obtain highly selective alcohols and ketones (aldehydes) , acids and other oxygen-containing organic compounds. Background technique [0002] Hydrocarbons are the main components of petroleum and natural gas. Hydrocarbon molecules are rich in C-C bonds and C-H bonds, but lack C-O bonds. Alcohols, aldehydes, ketones, acids and esters, etc., are widely used in fine chemical production. In addition to containing C-C bonds and C-H bonds, it also contains a large number of C-O bonds. Therefore, many of these oxygen-containing fine chemical products are produced from hydrocarbons through an oxidation process. For example, cyclohexanol and cyclohexanone, commonly known as K-A oil, are important monomer raw materials for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/32B01J31/28C07B41/06C07B41/08C07C45/36C07C45/33C07C51/265C07C51/215C07C47/54C07C49/78C07C49/597C07C49/607C07C63/06C07C55/12C07C33/22C07C29/50C07C39/04C07C37/60
CPCB01J31/0238B01J31/1805B01J31/28B01J31/32C07B41/06C07B41/08C07C29/50C07C37/60C07C45/33C07C45/36C07C51/215C07C51/265C07C47/54C07C49/78C07C39/04C07C49/597C07C49/607C07C63/06C07C55/12C07C33/22Y02P20/52
Inventor 徐杰刘梦石松陈晨高进苗虹
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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