Multifunctional catalyst reaction evaluation and characterization device and application thereof

Abstract

The invention provides a multifunctional catalyst reaction evaluation and characterization device and application thereof. The characterization device comprises a gas circuit control component, a catalytic reaction component, a detection function switching component, a signal detection processing component and a detection gas circuit balancing component. The multifunctional catalyst reaction evaluation and characterization device has the advantages that gas chromatography thermal conductivity detection, hydrogen flame ionization detection and catalyst evaluation systems are integrated, different detection modes are realized by different combination of electromagnetic valves, and more than ten chromatographic analysis and catalyst reaction evaluation and characterization functions are realized by the aid of a catalytic reaction portion.

Description

technical field The invention relates to a catalyst evaluation device, in particular to a multifunctional catalyst reaction evaluation and characterization device. Background technique Catalytic reaction technology plays a very important role in the modern chemical industry. At present, more than 85% of the chemicals used in people's lives are directly or indirectly produced by catalytic technology. Therefore, in the process of catalyst development and production, the analysis and evaluation of the physical and chemical properties of the catalyst is very important. It is the basis for understanding the catalytic mechanism and designing the catalyst, and it is also a means to control the quality of the product in the production of the catalyst. Although new catalyst characterization methods have emerged with the development of science and technology in recent years, the practice of analyzing and evaluating catalytic materials by means of gas chromatography has always been the...

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Problems solved by technology

In the published patent CN96211985.7 online sampling analysis device, patent CN200610041677.5 multi-channel gas rapid online sampling device and catalyst performance evaluation system, and patent CN200710064984.X a microreactor-gas chromatography combined analysis and evaluation system In these patent documents, gas chromatography is only used for online analysis of reaction products, which saves analysis time and improves accuracy, but cannot perform the determination and characterization of other catalyst properties.

At the same time, the functions of this type of device are often relatively single, and the catalytic reaction component and the chromatographic analysis component are independent of each other, resulting in a large volume of the whole set of equipment, which brings a lot of inconvenience to the maintenance of the instrument and the utilization of experimental space.

According to many investigations, the use of the existing simple chromatographic characterization device is limited to a few functions such as temperature programmed reduction (TPR), temperature programmed desorption (TPD), pulse catalytic reaction, etc., and cannot really meet the requirements of chromatography for comprehensive analysis and detection of catalyst properties. multifunctional needs

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