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Dual-function catalyst for hydrogenating benzene rings and reducing carbonyl, preparation of dual-function catalyst and application thereof

A bifunctional catalyst and catalyst technology, which can be used in the preparation of hydroxyl compounds, hydrogenation to hydrocarbons, metal/metal oxide/metal hydroxide catalysts, etc. , the effect of reducing production costs

Active Publication Date: 2016-06-22
KAILING CHEM ZHANGJIAGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The catalysts described in all the above patents are only for one raw material of benzene ring hydrogenation or ester hydrogenation, and the scope of application is relatively narrow

Method used

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  • Dual-function catalyst for hydrogenating benzene rings and reducing carbonyl, preparation of dual-function catalyst and application thereof
  • Dual-function catalyst for hydrogenating benzene rings and reducing carbonyl, preparation of dual-function catalyst and application thereof
  • Dual-function catalyst for hydrogenating benzene rings and reducing carbonyl, preparation of dual-function catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 75.9gCu(NO 3 ) 2 ·3H 2 O, 105.5gNiSO 4 ·6H 2 O is added in distilled water, and sodium carbonate solution is added dropwise under stirring and heating conditions to form a slurry precipitate until the pH value is between 5-9, suction filtration, washing filter cake, filter cake is added to deionized water for beating, to obtain Mass fraction is 15% slurry, in slurry, add 45g as the SiO of catalyst carrier 2 , impregnated at 80°C for 4 hours to obtain an impregnating solution; dried the impregnating solution at 120°C for 6 hours; roasted the dried powder at a temperature of 550°C for 5 hours, and compressed the calcined powder into granules, namely It can be obtained from the main catalytic components CuO and NiO and the carrier SiO 2 composed of bifunctional catalysts.

Embodiment 2

[0043] 75.9gCu(NO 3 ) 2 ·3H 2 O, 116.8gNi(NO 3 ) 2 ·6H 2 O is added in distilled water, and sodium carbonate solution is added dropwise under stirring and heating conditions to form a slurry precipitate until the pH value is between 5-9, suction filtration, washing filter cake, filter cake is added to deionized water for beating, to obtain Mass fraction is 15% slurry, in slurry, add 44.5g as the SiO of catalyst carrier 2 and 1.8g of Zn(NO 3 ) 2 ·6H 2 O, soaking at 80°C for 4 hours to obtain an impregnating solution; drying the impregnating solution at 120°C for 6 hours; calcining the dried powder at a temperature of 550°C for a calcining time of 5 hours, and tableting and granulating the calcined powder, It can be obtained from the main catalytic components CuO and NiO, the promoter component ZnO and the carrier SiO 2 composed of bifunctional catalysts.

Embodiment 3

[0045] According to the method of embodiment 1 or 2, change the charging amount and use different metal salts to obtain a series of bifunctional catalysts with different components and contents, and its components and contents are shown in the following table 1:

[0046] In the process of catalyst preparation, each parameter can be adjusted within a certain range. The concentration of the slurry can be 5-20% during beating, the temperature during impregnation is 75-85°C, the impregnation time is 1-6h, and the drying of the impregnation solution is Dry at 100-150°C for 1-6h; the temperature of the dried powder is calcined at 200-650°C, and the calcining time is 1-8°C. When beating, the slurry concentration is preferably 10-20%. When impregnating, it is best to impregnate at 75-85°C for 3-5h. The drying of the impregnating solution is to dry at 110-130°C for 5-7h; The temperature is 400-600°C, and the firing time is 4-6°C.

[0047] The main catalytic component and the pro-catalyt...

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Abstract

The invention discloses a dual-function catalyst for hydrogenating benzene rings and reducing carbonyl. The dual-function catalyst comprises, by weight, 10-60% of copper oxide, 10-60% of nickel oxide, 28-80% of carriers and 0-2% of catalysis assisting components. The catalysis assisting components include at least one type of ZnO, MnO2, Cr2O3, MgO and Fe2O3. The invention further discloses a method for preparing the dual-function catalyst and application of the dual-function catalyst to catalytically hydrogenating the benzene rings, hydrogenating and reducing the carbonyl and preparing 1, 4-cyclohexyl dimethyl carbinol.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, in particular to the preparation of a bifunctional catalyst suitable for benzene ring hydrogenation and carbonyl reduction. Background technique [0002] There are many published documents on the preparation of cyclohexane by the hydrogenation of benzene rings, and the production processes mainly include gas-solid phase fixed bed and gas-liquid-solid three-phase suspended bed reaction system. The catalysts commonly used in the fixed bed are noble metal Pt, Pd or Ru series. Precious metal catalysts are widely used in China and have many advantages: good sulfur resistance, easy regeneration after poisoning, good heat resistance, and long industrial service life. But precious metals are relatively expensive. [0003] There are many publications on the catalytic reduction of carbonyl to alcohols, especially the hydrogenation of ester carbonyl to alcohols. At present, copper-based catalysts are th...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/80B01J23/889C07C13/18C07C5/10C07C69/75C07C67/303C07C31/27C07C31/08C07C31/10C07C31/20C07C29/149C07C29/145
CPCY02P20/52B01J23/755B01J23/002B01J23/80B01J23/8892B01J2523/00C07C5/10C07C29/145C07C29/149C07C67/303C07C13/18C07C69/75C07C31/276C07C31/08C07C31/10C07C31/202B01J2523/17B01J2523/847B01J2523/27B01J2523/72B01J2523/67B01J2523/22B01J2523/842
Inventor 杨俊峰唐华友吕耀武
Owner KAILING CHEM ZHANGJIAGANG CO LTD
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