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Method for preparing catalyst for use in production of o-phenylphenol

A technology of o-phenylphenol and catalyst, which is applied in the field of catalyst preparation, can solve problems such as unstable performance, rapid decline in catalyst activity, and short catalyst life, and achieve fast drying speed, improved activity and service life, and improved stability. Effect

Active Publication Date: 2011-07-20
CHINA PETROCHEMICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Compared with noble metal catalysts, non-noble metal catalysts have great advantages in cost, but in the practical application of this kind of catalysts in the production of o-phenylphenol, the common problems are that the catalyst activity decreases rapidly, the performance is unstable, and the catalyst life is short The problem

Method used

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  • Method for preparing catalyst for use in production of o-phenylphenol

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Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: the specific surface is 180m 2 / g, the pore volume is 0.4cm 3 / g of 100g spherical γ-Al 2 o 3 After calcining in a high-temperature furnace at 500°C for 4 hours, cool to room temperature. Dissolve 2 grams of citric acid and 1.2 grams of chloroplatinic acid in 70 ml of deionized water to prepare an impregnation solution, and pour the solution into spherical γ-Al 2 o 3 In a container, stir evenly, and place in the air for 5 hours. Then the impregnated carrier was placed in a blast oven at a temperature of 120° C., dried for 5 hours and taken out. Put it into the dehydrogenation reaction tube, raise the temperature to 360°C, and the space velocity is 200ml.g -1 .h -1 Roasting under nitrogen flow for 4 hours, then switch to hydrogen, at a space velocity of 30ml.g -1 .h -1 After 5 hours of reduction under a stream of hydrogen, the catalyst was taken out. Configure 5% sodium sulfate solution, add it to the reduced catalyst, stir evenly and then soak fo...

Embodiment 2

[0029] Embodiment 2: the specific surface is 240m 2 / g, the pore volume is 0.38cm 3 / g of 100g strip γ-Al 2 o 3 The carrier was calcined in a high-temperature furnace at 500° C. for 5 hours, and then cooled to room temperature. Take 3 grams of oxalic acid to prepare 65ml of oxalic acid solution, pour the solution into a container containing the carrier, stir evenly, and place it in the air for 2 hours. Then the impregnated carrier was placed in a blast oven at a temperature of 120° C., dried for 5 hours and taken out. Then take by weighing 2 grams of chloroplatinic acid and be mixed with 65ml aqueous solution, this solution is poured into the dry container containing γ-Al 2 o 3 In the container of the carrier, stir evenly, and place it in the air for 6 hours. Then the impregnated carrier was placed in a blast oven at a temperature of 150° C., dried for 3 hours and taken out. Put it into the dehydrogenation reaction tube, raise the temperature to 355°C, and the space vel...

Embodiment 3

[0030] Embodiment 3: the specific surface is 280m 2 / g, the pore volume is 0.4cm 3 / g of 100g spherical γ-Al 2 o 3 The carrier was calcined in a high-temperature furnace at 600° C. for 6 hours, and then cooled to room temperature. Take 3 grams of trichloroacetic acid to prepare 70ml solution, pour the solution into a container containing the carrier, stir evenly, and place it in the air for 8 hours. Then the impregnated carrier was placed in a blast oven at a temperature of 110° C., dried for 5 hours and taken out. Then take by weighing 1.5 grams of chloroplatinic acid and be mixed with 70ml aqueous solution, pour this solution into the dried gamma-Al 2 o 3 In the carrier, stir evenly, place it in the air and soak for 10 hours. Then the impregnated carrier was placed in a blast oven at a temperature of 150° C., dried for 4 hours and taken out. Put it into the dehydrogenation reaction tube, raise the temperature to 390°C, and the space velocity is 100ml.g -1 .h -1 Roas...

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Abstract

The invention provides a method for preparing a catalyst for use in the production of o-phenylphenol. The method prepares the catalyst for use in the production of the o-phenylphenol through processes of carrier pretreatment, immersion, drying and activation, assistant addition, roasting and the like. The catalyst has high activity, selectivity and stability at high temperature.

Description

technical field [0001] The invention relates to a preparation method of a catalyst for producing o-phenylphenol Background technique [0002] Ortho-phenylphenol (OPP) is an important new fine chemical product and organic intermediate, widely used in sterilization and anticorrosion, printing and dyeing auxiliaries and surfactants, stabilizers and flame retardants for the synthesis of new plastics, resins and polymer materials medicines and other fields. [0003] Foreign enterprises producing o-phenylphenol are mainly concentrated in Japan, the United States and Germany, and the industrialized production process and core technology of o-phenylphenol are controlled by Bayer in Germany, Sanko in Japan, and Dow Chemical in the United States. my country's research and development of the technology of producing o-phenylphenol with cyclohexanone as a raw material began in the early 1990s. In 2003, Yancheng Huaye Pharmaceutical Chemical Co., Ltd. was the first to build a 200t / aOPP p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/58C07C39/06C07C37/20C07C37/07B01J37/025
CPCY02P20/52
Inventor 韩娟罗际安周小文朱化利李君夏伟兰
Owner CHINA PETROCHEMICAL CORP
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