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Catalyst used for preparing O-phenylphenol and its preparation method

A catalyst and co-catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as poor stability and short catalyst life, and achieve stability Good, low cost, long life effect

Inactive Publication Date: 2007-02-14
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to propose a kind of Ni-Cu catalyst that is used to prepare ortho-phenylphenol and preparation method thereof in order to overcome shortcoming such as above-mentioned catalyst life-span, poor stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1 # Catalyst: 40g φ2-3mm spherical γ-Al 2 o 3 Put it in a blast drying oven at 120°C for 5 hours, cool to room temperature and add 40.63g Ni(NO) dissolved in 20ml deionized water 3 ) 2 ·6H 2 In the solution of O, soak at room temperature for 18 hours, turn the carrier once every 2 hours during the soaking process, then dry at 120°C for 5 hours, raise the temperature to 400°C at 20°C / min in a nitrogen atmosphere, keep it for 1h, and then in a hydrogen atmosphere Reduction in medium for 2h and cooling to room temperature (1). 1.55gCu(NO3 ) 2 ·3H 2 O was dissolved in 30ml of deionized water, added to the above catalyst (1), and immersed at room temperature for 18h. It was then dried at 120°C for 5h, heated to 400°C at 20°C / min in a nitrogen atmosphere, kept for 1h, and then reduced to room temperature for 2h in a hydrogen atmosphere (2). 4.68gCr(NO 3 ) 3 9H 2 O was dissolved in 30ml of deionized water, added to the above catalyst (2), and immersed at room temper...

Embodiment 2

[0037] The step-by-step impregnation method of Example 1 is prepared into catalysts with different ratios of Ni, Cu and Cr, and the content of auxiliary agent K is 4% K 2 SO 4 +2%KOH (wt% relative to carrier γ-Al 2 o 3 ), under the same activity evaluation conditions, the results are shown in Table 1.

[0038] Example

Embodiment 3

[0040] The catalyst was prepared in the same manner as in Example 1, the solvent of the salt was replaced with ethanol, and the other preparation conditions were the same.

[0041] Under the same activity evaluation conditions, the initial conversion of dimerization was 100%, and the selectivity of ortho-phenylphenol was 90%. After 300 hours, the conversion rate of dimerization was 100%, and the selectivity of o-phenylphenol was 88%. After 500 hours, the dimerization conversion was 95%, and the selectivity of o-phenylphenol was 85%.

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PUM

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Abstract

The present invention relates to one kind of catalyst for preparing o-phenyl phenol and its preparation process, and is especially one kind of Ni-Cu catalyst for preparing o-phenyl phenol and its preparation process. The catalyst has main catalyst component of metal Ni and Cu and co-catalyst component of Cr, K, etc supported onto active gamma-Al2O3 through a dipping process. The supported amounts of Ni, Cu, Cr and K are 1-20 wt%, 1-20 wt%, 4-8 wt% and 4-8 wt% separately. The catalyst of the present invention has cyclohexenyl cyclohexanone converting rate up to 98 %, and o-phenyl phenol selectivity of 90 %, as well as low cost and high stability.

Description

technical field [0001] The invention relates to a catalyst for preparing o-phenylphenol and a preparation method thereof, in particular to a Ni-Cu catalyst for preparing o-phenylphenol and a preparation method thereof. Background technique [0002] O-phenylphenol (OPP) is a fine chemical and organic intermediate with a wide range of uses. It can be used as antiseptic, antifungal agent, broad-spectrum fungicide, used for fruit preservation, cosmetics, wood preservation, and household, public places, Disinfection of swimming pools and hospitals, it can also be used to produce oil-soluble o-phenylphenol formaldehyde resins, non-ionic emulsifiers, synthetic dyes, water-based cutting fluids, etc. Agents and intermediates of flame retardant polymer materials, etc. At present, cyclohexanone is mainly used as raw material at home and abroad, and dimer cyclohexenyl cyclohexanone is obtained through condensation and dehydration, and OPP is obtained through catalytic dehydrogenation a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/835B01J23/78B01J23/755B01J23/72C07C39/06C07C37/06
CPCY02P20/52
Inventor 曾崇余丁洁莲金秋张银华
Owner NANJING UNIV OF TECH
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