NMR tube quantitative gas adding device and using method thereof

Abstract

Disclosed is a NMR tube quantitative gas adding device. A quantitative gas adding tube is provided with a large syringe at the upper left end and with a first NMR tube at the lower left end. A secondNMR tube is disposed or not disposed at the lower right end of the quantitative gas adding tube. The device and a using method thereof of the invention can add reaction gas to one valve NMR tube, or add the reaction gas quantitatively to two NMR tubes, with the amount of the added gas being equal to the gas volume reduction in a small syringe, and can accurately control the gas addition amount. The device has certain corrosion resistance and can quantitatively add any type of gas other than HF.

Description

technical field [0001] The invention belongs to the technical field of chemical experiment equipment or devices, and in particular relates to a device capable of quantitatively adding trace gas into a nuclear magnetic tube and a method for using the device. Background technique [0002] Adding gaseous reactants to a reaction vessel in a chemical reaction usually requires specialized reaction equipment and tools. The most commonly used method is to use a high-pressure reactor to fill the ax with high-pressure gas. This method is simple and efficient, and the gas pressure is higher, which is more conducive to the reaction. However, the high-pressure reactor that this method needs to use is more expensive, and the reactor is generally larger in volume, and it is difficult to perform quantitative trace gas reaction. In addition, airbags or balloons can also be used to add gaseous reactants to the closed reaction container. This method does not require special equipment, is simp...

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Problems solved by technology

However, this method is difficult to implement when the reactants are gaseous and need to be added quantitatively

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