| abstract |
The invention discloses a system for preparing nano-zero-valent iron by reverse filtration in a non-open inert atmosphere, comprising an inert gas bottle, a gas monitoring and buffering device, a main reaction device, a condensation device, a waste liquid collection device, a liquid The main reaction device is a three-necked flask, the condensation device includes a condenser tube and a cold source, the waste liquid collection device is a waste liquid collection bottle, and the three ports of the three-necked flask are respectively provided with No. 1 three-way valve and single hole Rubber stopper and No. 2 three-way valve, the single-hole rubber stopper is provided with a liquid taking pipe, the top of the liquid taking pipe is connected with one end of the condenser pipe, and the bottom end of the liquid taking pipe is fixed with a filter head; the suction pressure regulating device includes No. 3 three-way valve and vacuum pump, the liquid sealing device includes a second liquid sealing bottle connected to the waste liquid collection bottle through a first connecting pipe, and one end of the first connecting pipe extends into the water in the second liquid sealing bottle; The sealing bottle is connected with the No. 3 three-way valve. The invention can safely and effectively produce high-purity nanometer zero-valent iron. |