A device and method for gas-phase ion-catalyzed molecular macro conversion
A gas-phase ion, macro-scale technology, applied in chemical instruments and methods, chemical/physical/physical chemical processes, chemical/physical/physical chemical processes using energy, etc. , to achieve the effect of convenient installation and increase of reaction volume
Active Publication Date: 2020-06-16
INST OF CHEM CHINESE ACAD OF SCI
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Problems solved by technology
[0003] In view of the above analysis, the present invention aims to provide a device and method for gas-phase ion-catalyzed molecular macro-transformation, which solves the problem that the number of molecules converted by gas-phase ion-catalyzed conversion in the prior art is usually too small to be practically applied to the synthesis of molecules
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Embodiment 1
[0061] Unless otherwise stated, the raw materials, instruments and reagents used in the following examples are commercially available or can be prepared by known methods.
[0062]The gas-phase ion catalyst macro-transformation provided in this example uses a metal iron rod as the sample; the sample ionization method is the laser sputtering method; the gas confinement unit is a square cavity device made of metal; the ion confinement device is an ion funnel The trap has 35 pieces of stainless steel electrodes, the geometric structure of the electrodes is an inner circle and an outer square, and the capacity is 0.5 liters; the gas introduction unit is a gas cylinder combined with a needle valve; the gas extraction unit is an oil-free scroll vacuum pump; the product enrichment unit 4 is a freezing trap (using liquid nitrogen as a freezing liquid); the specific steps are as follows:
[0063] Step a: Apply direct current on the pole piece, the voltage in the first half decreases gra...
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The invention discloses a device and method for macroscopic quantity conversion of gas-phase ion catalysis molecules, belongs to the technical field of molecular synthesis, and solves the problem thatin the prior art, the number of gas-phase ion catalysis conversion molecules is generally small, and the gas-phase ion catalysis conversion molecules cannot be practically applied to synthesis of molecules. The device for macroscopic quantity conversion of gas-phase ion catalysis molecules comprises a gas-phase ion preparation unit, and a reactant supply unit, a high-pressure large-capacity reaction unit, a product enrichment unit and a gas extraction unit which are sequentially connected, and an ion outlet of the gas-phase ion preparation unit is connected with an ion inlet of the high-pressure large-capacity reaction unit; the reaction volume of the high-pressure large-capacity reaction unit is 0.5 L or above, the air pressure in the high-pressure large-capacity reaction unit is 100Pa or above at the initial stage of the reaction, the density of gas-phase ions is more than 1*10<7> / L, and the density of reactants is more than 1*10<20> / L. The device and the method provided by the invention can be used for macroscopic quantity conversion of gas-phase ion catalysis molecules.
Description
technical field [0001] The invention relates to a molecular synthesis process, in particular to a device and method for gas-phase ion-catalyzed molecular macro-transformation. Background technique [0002] In order to achieve the synthesis and transformation of high value-added molecules, the development of catalytic processes is crucial. At present, the catalysts commonly used in industry are usually liquid or solid. Gas-phase ion-catalyzed reactions are widespread in the atmosphere. In laboratory research, gas-phase ions are considered to be an ideal model of active sites on the surface of solid-state catalysts, and the homogeneous reactions catalyzed by gas-phase ions have excellent properties; at the same time, the trajectory of gas-phase ion catalysts can be controlled by electrical means. It is easy to control and realize the separation of catalyst ions and product molecules. However, under laboratory research conditions, the number of catalyst ions that can be conf...
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IPC IPC(8): B01J19/08
CPCB01J19/087
Inventor 何圣贵张梅琦刘清宇
Owner INST OF CHEM CHINESE ACAD OF SCI