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Preparation method of metal organic catalyst

A metal-organic and catalytic technology, which is applied in tin organic compounds, organic chemistry, chemical instruments and methods, etc., can solve the problems of low product purity and achieve good results, low power and good quality

Pending Publication Date: 2020-11-10
ANYANG NORMAL UNIV
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Problems solved by technology

[0003] However, there is relatively little preparation of lanthanum neodecanoate in the current preparation process. The common direct extraction method is mainly to add concentrated hydrochloric acid to neodymium trioxide to produce lanthanum chloride, and then mix it with ammonium hydroxide and naphthene Acid mixing to produce lanthanum neodecanoate solution
By adopting the above process, although organometallic oxides can be prepared, the product obtained has low purity, and further purification processes are required to obtain the metal organic compound

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[0028] The embodiment of the present invention discloses a method for preparing a metal organocatalyst, comprising the following steps:

[0029] 1) dissolution of lanthanum oxide;

[0030] 2) Precipitating the dissolved reactant in step 1), filtering to obtain a clear solution;

[0031] 3) Saponification reaction, mix neodecanoic acid and hexane in proportion and add them to the reaction vessel, mix well, add ammonia water dropwise under stirring, and carry out saponification reaction at 60-65°C for 40-45 minutes;

[0032] 4) Slowly add the clear solution of step 2) to step 3), stir and extract, and let stand to separate phases;

[0033] 5) After removing impurities, a solution of lanthanum neodecanoate is obtained.

[0034] Preferably, the step 1) specific method is as follows:

[0035] Stir and mix the lanthanum oxide and deionized water according to the mass ratio of 1:4-5, add concentrated hydrochloric acid during stirring, and dissolve at room temperature.

[0036] Pr...

Embodiment 1

[0045] A method for preparing metal organocatalysts, comprising the steps of:

[0046] 1) Dissolving of lanthanum oxide, stirring and mixing lanthanum oxide and deionized water according to the mass ratio of 1:4, adding concentrated hydrochloric acid during stirring, and dissolving at room temperature, wherein the mass ratio of lanthanum oxide and concentrated hydrochloric acid The ratio is 1:1;

[0047] 2) Precipitating the dissolved reactant in step 1), filtering to obtain a clear solution;

[0048] 3) Saponification reaction, mix neodecanoic acid and hexane in a ratio of 13:1 and add to the reaction vessel, mix well, add ammonia water dropwise under stirring, the mass ratio of neodecanoic acid and ammonia water is 25:1, at 60°C Under carry out saponification reaction 45 minutes;

[0049] 4) Slowly add the clear solution of step 2) to step 3), stir and extract for 30 minutes, and let stand to separate the phases;

[0050] 5) The aqueous phase after phase separation in ste...

Embodiment 2

[0052] A method for preparing metal organocatalysts, comprising the steps of:

[0053] 1) Dissolution of lanthanum oxide, stir and mix lanthanum oxide and deionized water according to the mass ratio of 1:4.5, add concentrated hydrochloric acid during the stirring process, and dissolve at room temperature, wherein the mass ratio of lanthanum oxide and concentrated hydrochloric acid The ratio is 1:2;

[0054] 2) Precipitating the dissolved reactant in step 1), filtering to obtain a clear solution;

[0055] 3) Saponification reaction, mix neodecanoic acid and hexane in a ratio of 14:1 and add them to the reaction vessel, mix well, add ammonia water dropwise under stirring, the mass ratio of neodecanoic acid and ammonia water is 25:1, at 60°C Under carry out saponification reaction 45 minutes;

[0056] 4) Slowly add the clear solution of step 2) to step 3), stir and extract for 30 minutes, and let stand to separate the phases;

[0057] 5) The aqueous phase after phase separatio...

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Abstract

The invention discloses a preparation method of a metal organic catalyst. The preparation method comprises the following steps: 1) dissolving lanthanum oxide; precipitating and filtering the reactantdissolved in the step 1) to obtain a clear solution; performing saponification reaction: preparing neodecanoic acid and hexane in proportion, adding the prepared neodecanoic acid and hexane into a reaction container, performing fully mixing, dropwise adding ammonia water while stirring, and carrying out saponification reaction at 60-65 DEG C for 40-45 minutes; slowly adding the clear liquid obtained in the step 2) into the clear liquid obtained in the step 3), performing stirring and extracting, and standing for phase splitting; and removing impurities to obtain the lanthanum neodecanoate solution. By adopting the technical scheme provided by the invention, the prepared catalyst is high in purity.

Description

technical field [0001] The invention relates to the technical field of metal catalysts, in particular to a method for preparing metal organic catalysts. Background technique [0002] At present, the lanthanide elements (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) in the periodic table of chemical elements plus the 15 homologous elements The closely related elements Y and Sc add up to 17 elements, collectively referred to as rare earth elements. Rare earth elements have the common properties of similar atomic structure, close ionic radius and close symbiosis. The chemical activity of rare earth metal elements is very strong, and the chemical activity of their simple substances is almost close to that of alkali metals and alkaline earth metal elements. Materials currently have good research value and application prospects in the fields of medicine, analytical chemistry, and biology. Most of their complexes are cationic metal compounds, which themselves have hi...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07F7/22
CPCB01J31/223C07F7/2224B01J2531/37
Inventor 赵丰孙婷
Owner ANYANG NORMAL UNIV
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