Activating method of inactive platinum/palladium catalyst

A deactivated catalyst and activation method technology, applied in the field of deactivated platinum/palladium catalyst activation, can solve the problems of lack of wide applicability, short regeneration time, etc., achieve good elution effect, simple equipment structure, and less dosage Effect

Inactive Publication Date: 2014-04-02
JIANGXI HANSHI PLATINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the advantages of short regeneration time, no need to stop the machine to cool down the temperature and pressure, simple operation and obvious activation effect, but it lacks wide applicability

Method used

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  • Activating method of inactive platinum/palladium catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: Small batch deactivation platinum / palladium catalyst activation equipment

[0020] Small batch deactivated platinum / palladium catalyst activation equipment such as figure 1 As shown, the three-necked flask 3 is used as the evaporation chamber, the jacketed pipe is used as the rinse chamber for the rinse pipe 2, and the condensation pipe 1 is used as the condensation chamber. Before activation, the deactivated catalyst is placed in the jacketed tube, the detergent is added into the three-necked flask, and the equipment is assembled according to the diagram. When activating, turn on the condensing pipe to cool the water, and the jacket pipe to control the water temperature. After the temperature is stable, turn on the carrier gas and heat the three-necked bottle to the predetermined temperature at the same time. Adjust the flow rate of the carrier gas so that the liquid level of the detergent in the jacket is higher than that of the catalyst and remains st...

Embodiment 2

[0021] Example 2: Activation of deactivated platinum-carbon catalyst

[0022] use figure 1 Reaction device, wherein the reaction chamber is a 250mL glass three-necked flask, and the three-necked flask is placed in a water bath. 100g of an inactivated platinum-carbon (5%) catalyst from a certain pharmaceutical factory is placed in a jacketed tube, and 150mL of dichloromethane is added to the three-necked flask. Adjust the cooling liquid temperature in the condenser tube to -5°C, heat the three-necked flask to 60°C, turn on the nitrogen carrier gas, and adjust the gas velocity to keep the solvent in the jacketed tube about 3cm higher than the catalyst. After washing for 12 hours, open the connection between the condenser tube and the washing tube, close the interface of the washing tube, connect the condenser tube with a 250mL single-mouth bottle, and maintain the operating parameters for 0.5 hours to recover the detergent. Take the washed catalyst out and soak it in 10% hydroc...

Embodiment 3

[0023] Example 3: Activation of deactivated platinum-alumina catalyst

[0024] use figure 1 Similar to the activation device, the reaction chamber is a 500mL glass three-necked flask, and the three-necked flask is placed in a heating jacket. 200g of a deactivated platinum-alumina catalyst from a fine chemical plant is placed in a jacketed tube, and 150mL of cyclohexane is added to the three-necked flask. Turn on the nitrogen carrier gas, adjust the cooling water temperature of the condenser tube to 0°C, and stabilize the heating mantle to 90°C o C, adjust the nitrogen flow rate to keep the solvent in the jacketed tube about 3cm higher than the catalyst. After washing for 6 hours, open the condenser tube to connect it with the washing tube, close the interface of the washing tube, connect it under the condenser tube with a 250mL single-necked flask, and maintain the operation for 0.5 hours to recover the detergent. Take out the washed catalyst and soak it in 10% hydrochloric ...

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Abstract

The invention relates to an activating method of inactive platinum / palladium catalyst, and provides a simple and easy, environment-friendly and economic regenerating process aiming at moderate and light pollution caused by supported platinum / palladium catalyst which is produced in the industry of petrochemical, organic synthesis, pharmacy and the like. The method specifically comprises the following steps: leaching inactive catalyst by using a circular detergent in an activating device, and then soaking by using an acid solution according to different catalysts, supporting a certain amount of platinum / palladium to the catalyst so as to activate the catalyst and obtain the high-activity platinum / palladium catalyst. The activating device comprises a leaching room, an evaporating room and a condenser, the equipment structure and the operation are simple, the detergent is circulated in the equipment, the dosage is less and the effect is good; the activity of the catalyst activated by the method can be recovered by more than 90%. Furthermore, waste gas, waste water and waste residues in the activating process are less, the loss rate of the platinum / palladium is small, and the method is an environment-friendly and economic regenerating method.

Description

technical field [0001] The invention belongs to the field of chemical application, and in particular relates to an activation method for an inactivated platinum / palladium catalyst. Background technique [0002] In the past ten years, my country's catalytic hydrogenation technology has made great progress in the development and promotion of use. In terms of catalyst materials, new high-efficiency platinum and palladium catalysts have developed rapidly, and have been widely used in petrochemical and petroleum refining, and have been continuously developed and applied in many fields such as fine chemical industry and pharmaceutical industry. Like other catalysts, the catalytic activity of this type of catalyst will gradually decrease with the increase of the number of uses and the extension of the use time during use, and finally lose its activity. Therefore, a large number of spent catalysts containing platinum and palladium are replaced every year in China. Because platinum...

Claims

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Application Information

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IPC IPC(8): B01J23/96
Inventor 李永敏郭艳辉王临才何治鸿相亚波
Owner JIANGXI HANSHI PLATINUM
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