Device and method for synthesizing catalyst by using novel redox coprecipitation method

Abstract

The invention discloses a device for synthesizing a catalyst by using a novel redox coprecipitation method. The device is characterized by comprising a reaction tank (1), an oxidant solution injectionpump (2), a reducing agent solution injection pump (3), an alkaline solution injection pump (4), a pH probe (5), a temperature probe (6), an upper computer (7) and a magnetic stirrer (8) with a heating function, wherein the upper computer (7) is used for controlling the ion concentration and the redox reaction speed in the reaction tank (1) through control on the propelling speed of the oxidant solution injection pump (2) and the propelling speed of the reducing agent solution injection pump (3), is used for measuring the pH value of a solution accurately through the pH probe (5) in the reaction tank (1), and is used for controlling the propelling speed of the alkaline solution injection pump (4) so that the pH value of the prepared solution is stabilized within a preset range of the setpH value. Through the device, the pH value in the reaction tank can be controlled with high precision, so that the synthesis reaction speed is controlled, the degree of automation is high, and manualerrors are reduced.

Description

technical field [0001] The invention belongs to the technical field of catalyst synthesis equipment, and in particular relates to a device and method for synthesizing catalysts by a novel oxidation-reduction co-precipitation method. Background technique [0002] With the rapid development of social economy, catalysts have been widely used in industrial production. Synthesizing catalysts with special morphology and functions has become a widespread consensus. At present, hydrothermal synthesis, co-precipitation, sol-gel method and impregnation method are four commonly used synthesis methods. Compared with other preparation methods, co-precipitation method has lower requirements on the production environment because of its simple process. Therefore, it has a wide range of applications in industry, but the addition of precipitating agents will cause the local pH value to be too high, which will destroy the kinetic balance of precipitation, resulting in agglomeration and uneven...

AI Technical Summary

Problems solved by technology

At present, hydrothermal synthesis, co-precipitation, sol-gel method and impregnation method are four commonly used synthesis methods. Compared with other preparation methods, co-precipitation method has lower requirements on the production environment because of its simple process. Therefore, it has a wide range of applications in industry, but the addition of precipitating agents will cause the local pH value to be too high, which will destroy the kinetic balance of precipitation, resulting in agglomeration and uneven distribution of catalyst components, thereby reducing the distribution of active sites of the catalyst on the surface of the catalyst. Reduce catalyst activity

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