Light-catalyzed reaction negative-pressure loop circuit automatically testing system

Abstract

The invention discloses a self-testing system of negative pressure loop of optical catalyzed reaction, which comprises the following parts: reacting part with magnetic stirrer, reactor, xenon lamp source, circulating part with magnetic glass piston pump, spherical glass condenser, gas-phased chromatogram, reactor, blowing vacuum extracting part with ten-shaped four-way vacuum piston, scrubbing bottle, precise vacuum pressure list and vacuum pump, sampling detecting part with gas phased chromatogram, automatic six-way sampling valve, gas-carrier bottle and gas driving bottle, temperature control part with thermostatic circulating pump, reactor temperature control jacket and spherical glass condenser. The invention can estimate the catalytic property of catalyst precisely and in time, which is fit for other optical catalyzed reacting tests in relative to gas participation or generation.

Description

technical field [0001] The invention belongs to a catalytic chemical reaction testing experimental system, in particular to a photocatalytic reaction negative pressure loop automatic testing system. Background technique [0002] It is of great significance for the research of catalysts to test the catalytic activity of catalysts under controllable conditions and the reaction stability under long-term conditions. For photocatalytic reactions, the testing of photocatalysts is particularly important. [0003] In the photocatalytic water splitting reaction, most catalysts are semiconducting, and the basic principle of action is: when the semiconductor photocatalyst is irradiated by sunlight (mainly visible light and ultraviolet light), the electrons inside it are excited to transition from the valence band to Conduction band, so that free electrons and electron holes are generated in the conduction band and valence band, respectively. When the electrons and holes migrate to th...

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Problems solved by technology

[0008] At present, in the process of photocatalytic reaction, the temperature control of the reaction is generally lacking, and some have better control, but it is mainly used for testing near room temperature, and there are few tests for reaction systems at different temperatures under precise control; After searching and inquiring various patents and literatures, it is shown that there is no report on automatic test of the reaction, and there is no report on a similar loop reaction test device in China.

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