Preparation of antimony pentachloride
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Those preparing to produce R-22 – antimony pentachloride cannot be transported at the moment. Can antimony pentachloride be prepared using an R-22 reactor? Dear experts, please offer some guidance
It can be said clearly that it’s not possible. Antimony pentachloride is produced by reacting metallic antimony with chlorine gas at normal pressure. The reactor used for this reaction is a cylinder equipped with a jacket; there is a sieve plate inside the cylinder, and crushed metallic antimony is placed within it. Circulating water is used in the jacket to cool the mixture. There is also a receiving tank at the bottom of the cylinder, where the resulting antimony pentachloride is stored. It is important to control the flow rate of chlorine gas, otherwise white smoke will be generated, along with a very hot receiving tank
The R-22 reactor is also equipped with a jacket for cooling, as well as chlorine gas supply pipes; there may be issues with the endpoint determination, and it is unclear whether national regulations apply in this case. Please give me your guidance
As already clearly explained upstairs, the preparation process is mainly a gas-solid phase contact reaction. Points to note: 1. Chlorine introduction rate; 2. The equipment requires jacketed water cooling; 3. It is advisable to connect the vent to an exhaust gas washing system. As for the amount of chlorine to be used, you can first weigh the antimony blocks and then calculate the required amount of chlorine
In gas-solid reactions, the key lies in ratio control and temperature control.
In the reactor, metallic antimony is placed on a sieve plate (or a grid plate will also work). The reaction between chlorine and antimony can be considered to occur in two steps: first, solid antimony trichloride is formed, and then liquid antimony pentachloride is produced. The solid remains above the sieve plate, while the liquid flows into the storage tank below; otherwise, antimony pentachloride would react with antimony to form antimony trichloride. Production of antimony pentachloride only begins after all the antimony has been converted into antimony trichloride. This reaction process is lengthy and difficult to control. As for determining the endpoint, this is calculated: 1 ton of metallic antimony requires 1.458 tons of chlorine gas. When the amount of chlorine applied is approximately right, a \"starch-KI test strip\" can be used at the exhaust outlet to determine the endpoint.
Is there any demand for antimony ingots? I am a manufacturer of antimony ingots
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