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A kind of method for preparing manganese molybdate telluride by self-propagating combustion of citrate gel

A self-propagating combustion, manganese tellurium molybdate technology, applied in chemical instruments and methods, elemental compounds other than selenium/tellurium, selenium/tellurium compounds, etc., can solve the problem that the preparation method of manganese tellurium molybdate is single, time-consuming, High requirements are required to achieve the effect of short preparation process cycle, low price and low cost

Active Publication Date: 2020-03-17
YIBIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing preparation method of manganese telluride molybdate is relatively simple, and the existing preparation method is time-consuming and demanding

Method used

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  • A kind of method for preparing manganese molybdate telluride by self-propagating combustion of citrate gel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a kind of method that citrate gel self-propagating combustion prepares manganese tellurium molybdate, comprises the following steps: 0.15mol citric acid is clarified with ammonia solution, 0.1molMnO, 0.1mol TeO 2 and 0.1mol MoO 3 Soluble in nitric acid. Under the condition of magnetic stirring, the above two solutions were mixed to form a mixed solution, and the solution formed a gray milky state at this time. Dissolve the emulsion with ammonia water until clear, and adjust the pH value of the solution to pH=8. The above solution was magnetically stirred for 2 hours to obtain the Mn-Te-Mo sol. Transfer the prepared Mn-Te-Mo sol to an oven at 85° C. for 48 hours to prepare the Mn-Te-Mo gel. The Mn-Te-Mo gel is heated in a small electric furnace, and the gel will self-combust after a few minutes to form a loose powder.

Embodiment 2

[0026] Embodiment 2: a kind of citrate gel self-propagating combustion prepares the method for manganese tellurium molybdate, comprises the following steps: 0.15mol citric acid is clear with ammonia solution, 0.1mol Mn(NO 3 ) 2 , 0.1mol TeO 2 and 0.1mol MoO 3 Soluble in nitric acid. Under the condition of magnetic stirring, the above two solutions were mixed to form a mixed solution, and the solution formed a gray milky state at this time. Dissolve the emulsion with ammonia water until clear, and adjust the pH value of the solution to pH=7.5. The above solution was magnetically stirred for 2 hours to obtain the Mn-Te-Mo sol. The prepared Mn-Te-Mo sol was transferred to an oven at 80°C for 60 hours to prepare the Mn-Te-Mo gel. The Mn-Te-Mo gel is heated in a small electric furnace, and the gel will self-combust after a few minutes to form a loose powder.

Embodiment 3

[0027] Embodiment 3: a kind of citrate gel self-propagating combustion prepares the method for manganese tellurium molybdate, comprises the following steps: 0.15mol citric acid is clear with ammonia solution, 0.05mol Mn(NO 3 ) 2 , 0.05mol MnO, 0.1mol TeO 2 and 0.1mol MoO 3 Soluble in nitric acid. Under the condition of magnetic stirring, the above two solutions were mixed to form a mixed solution, and the solution formed a gray milky state at this time. Dissolve the emulsion with ammonia water until clear, and adjust the pH value of the solution to pH=8. The above solution was magnetically stirred for 2 hours to obtain the Mn-Te-Mo sol. Transfer the prepared Mn-Te-Mo sol to an oven at 90° C. for 36 hours to prepare the Mn-Te-Mo gel. When the Mn-Te-Mo gel is heated, the gel will self-combust after a few minutes and form a loose powder.

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Abstract

The invention relates to the technical field of chemical synthesis, in particular to a method for preparing manganese telluride molybdate by self-propagating combustion of citrate gel. The method comprises the following steps of: (1) dissolving citric acid in ammonia water to form a solution A; (2) dissolving raw materials of a Mn source, a Te source and a Mo source in nitric acid according to a stoichiometric ratio to form a solution B; (3) under the condition of magnetic stirring, mixing the solution A and the solution B to form gray milk; (4) dissolving the milk with ammonia water until themilk is clear, and adjusting the pH value of the solution to 7.5-8.5; (5) uniformly stirring the solution to obtain a Mn-Te-Mo sol; (6) drying the prepared Mn-Te-Mo sol to obtain a Mn-Te-Mo gel; and(7) heating the Mn-Te-Mo gel to realize self-burning of the gel after a few minutes to form loose manganese telluride molybdate powder. The method provided by the invention has the advantages of simple preparation process, continuous production, low price and low cost of equipment used for preparation, and short preparation process period.

Description

technical field [0001] The invention provides a technical field of chemical synthesis, and in particular relates to a method for preparing manganese telluride molybdate by self-propagating combustion of citrate gel. Background technique [0002] The nonlinear optical effect is the result of the interaction between the electric field of the incident light wave and the molecules or groups in the crystal. The frequency conversion technology of frequency doubling, frequency mixing, parametric oscillation and optical parametric amplification produced by the second-order nonlinear optical effect of the crystal is used in medical treatment, nuclear fusion, laser weapons, optical communication, optical storage, etc. Inorganic nonlinear optical crystal materials occupy a dominant position in second-order nonlinear optical materials. [0003] Manganese telluride molybdate (chemical formula: MnTeMoO 6 ) is an excellent nonlinear optical material. It is a compound with a non-centrosym...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/00
CPCC01B19/002
Inventor 金成国王莉均万明杰罗华锋杨俊升
Owner YIBIN UNIV
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