A method for catalytically synthesizing ammonia under normal pressure
A kind of ammonia synthesis and normal pressure technology, applied in the field of ammonia synthesis, can solve the problems of difficult large-scale synthesis of ammonia, large-scale synthetic ammonia industry, low synthesis rate, etc., and achieve the effect of easy large-scale synthesis of ammonia, wide sources and low cost
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Embodiment 1
[0055] This embodiment discloses a specific catalytic ammonia synthesis device under normal pressure, which includes a reactor, a heating mechanism for providing a heat source, a hydrogen source and a nitrogen source.
[0056] figure 1 It is a schematic structural view of the reactor of the present invention, and the reactor includes a reactor body 1, a nitrogen vent pipe 2, and a hydrogen vent pipe 3; the upper part of the reaction body 1 is provided with a product gas outlet 4, and the nitrogen vent pipe The gas pipe 2 and the hydrogen vent pipe 3 penetrate into the reactor body 1 and extend into the reactor body 1 .
[0057] In order to avoid environmental pollution and unsafe factors caused by the discharge of ammonia gas, the product gas outlet 4 is connected with an ammonia gas collection mechanism, such as a collection tank filled with an aqueous acid solution.
[0058] In order to enable this reactor to be used in the synthesis process of this application, the reactor...
Embodiment 2
[0065] In this embodiment, a Li-Sn liquid alloy is used as a catalyst, a molten salt of LiCl-KCl is added, and ammonia is synthesized under normal pressure.
[0066] In the method of catalytic ammonia synthesis under normal pressure in the present embodiment, the catalytic reaction steps are as follows:
[0067] 1) In an argon glove box, weigh 21.3g of prefabricated Li-Sn alloy and 8.46g of prefabricated LiCl-KCl molten salt, and put them into the reactor successively.
[0068] 2) Transfer the reactor as a whole to a tube furnace. The reactor is fed with argon, and the flow rate of argon is 5cm 3 / min, and the temperature was raised to 500°C at a rate of 4°C / min, so that the prefabricated Li-Sn alloy became a Li-Sn liquid alloy, and then the argon flow was stopped. Nitrogen is passed into the bottom of the Li-Sn liquid alloy through the nitrogen vent pipe, and the flow rate of nitrogen is 5cm 3 / min; the hydrogen gas is passed into the upper part of the Li-Sn liquid alloy t...
Embodiment 3
[0072] In this embodiment, a Li-Sn liquid alloy is used as a catalyst, a molten salt of LiCl-KCl is added, and ammonia is synthesized under normal pressure.
[0073]In the method of catalytic ammonia synthesis under normal pressure in the present embodiment, the catalytic reaction steps are as follows:
[0074] 1) In an argon glove box, weigh 11.76g of prefabricated Li-Sn alloy, then weigh 26.97g of Sn and mix it so that the molar ratio of Li and Sn is 30:70, and then weigh 3.38g of prefabricated LiCl-KCl molten salt , and loaded into the reactor successively.
[0075] 2) Transfer the reactor as a whole to a tube furnace. The reactor is fed with argon, and the flow rate of argon is 5cm 3 / min, and the temperature is raised to 400°C at a rate of 4°C / min, so that the prefabricated Li-Sn alloy becomes a Li-Sn liquid alloy, and then the argon flow is stopped. Nitrogen is passed into the bottom of the Li-Sn liquid alloy through the nitrogen vent pipe, and the flow rate of nitrog...
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Abstract
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