Process for the production of triethylaluminium with aluminium hydride structure activator

Abstract

The present application belongs to the technical field of catalyst, and particularly relates to a method for hydrogenation reaction in production of triethylaluminum catalyzed by aluminum hydrogen structure activator. The present application provides a method for hydrogenation reaction in production of triethylaluminum catalyzed by aluminum hydrogen structure activator, which comprises adding triethylaluminum mother liquor and aluminum powder mixture mixed with aluminum hydrogen structure activator in advance into a reaction kettle, heating under stirring, passing in hydrogen and pressurizing, continuously keeping hydrogen passing in during the reaction to ensure that the reaction kettle is in a constant pressure state, and obtaining target product diethylaluminum hydride and hydrogenolysis byproduct ethane after the reaction is completed. The present application provides a hydrogenation reaction with introduction of aluminum hydrogen structure activator, effectively improves the hydrogenation reaction speed and production efficiency, simultaneously reduces by-reactions and production cost, the activator is convenient to add, does not additionally increase process burden, related by-products are easy to remove and do not affect the environment and production safety.

Description

Technical Field

[0001] This invention belongs to the field of catalyst technology, and particularly relates to a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator. Background Technology

[0002] Triethylaluminum (AlEt3) is an important co-catalyst for Ziegler-Natta polyolefin catalysts and one of the most widely used organoaluminum co-catalysts in the polyolefin industry. Currently, the industrial preparation of triethylaluminum mainly employs the Ziegler direct synthesis method, using metallic aluminum, ethylene, and hydrogen as raw materials. A two-step reaction occurs in the presence of the "seed" triethylaluminum: first, aluminum powder reacts with hydrogen and triethylaluminum to generate diethylaluminum hydride (DEAH), followed by the addition reaction of DEAH with ethylene to produce the triethylaluminum product. The relevant reaction principle is illustrated by the following equations: Al + 3 / 2 H2+ 2 (C2H5)3Al à 3 (C2H5)2AlH (1-1) (C2H5)3Al + H2 à (C2H5)2AlH + C2H6↑ (1-2) 3 (C2H5)2AlH + 3 C2H4à 3 (C2H5)3Al (2-1) Among them, (1-1) and (1-2) are the main reactions, and (1-2) is a side reaction that occurs during the hydrogenation reaction of (1-1).

[0003] In this process, the first step of aluminum powder hydrogenation is the rate-controlled step. The dense oxide layer on the surface of aluminum powder, hydrogen mass transfer, and exothermic reaction behavior significantly affect the hydrogenation efficiency and product quality. Common optimization strategies in the prior art include: (1) increasing the hydrogenation rate by improving process conditions such as reaction temperature, hydrogen partial pressure, stirring intensity, and optimizing aluminum powder particle size; (2) introducing transition metal elements such as titanium and zirconium into aluminum powder to promote hydrogenation by utilizing the dissociation ability of transition metals on hydrogen.

[0004] While existing optimization methods can improve hydrogenation rates, they lead to increased side reactions, more intense exothermic reactions, and increased process safety risks, such as excessively high temperatures and pressures. Transition metal doping of aluminum powder has limitations in improving hydrogenation activity and introduces additional metal impurities whose role in the subsequent Ziegler-Natta polymerization system is unclear, posing a risk of catalyst equivalence. Furthermore, existing technologies lack a precise definition of the hydrogenation mechanism of aluminum powder under the combined action of triethylaluminum and hydrogen, and have insufficient understanding of reaction intermediates, surface active sites, and side reaction pathways. This results in current optimization routes relying heavily on empirical adjustments, making it difficult to achieve efficient and controllable hydrogenation processes while ensuring safety and equivalence.

[0005] The applicant has also proposed a method for activation using sodium-potassium alloy activator. Although liquid sodium-potassium alloy is a highly efficient activator, it is extremely sensitive to air and water, and there are safety uncertainties in the pumping system and maintenance, which places high demands on the system equipment. Summary of the Invention

[0006] The purpose of this invention is to address the above-mentioned problems by providing a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator.

[0007] To achieve the above objectives, the present invention adopts the following technical solutions: A method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as a catalyst, characterized by comprising the following steps: Triethylaluminum mother liquor and a mixture of aluminum powder premixed with an aluminum-hydrogen structure activator were added to a reactor. The mixture was heated under stirring, hydrogen was introduced and pressurized. During the reaction, the hydrogen was continuously introduced to ensure that the reactor was under constant pressure. After the reaction was completed, the target product diethylaluminum hydride and the hydrogenolysis byproduct ethane were obtained.

[0008] In the above-mentioned method for hydrogenation reaction in the production of triethylaluminum catalyzed by an aluminum-hydrogen structure activator, the aluminum-hydrogen structure activator is sodium hydride or sodium aluminum hydride.

[0009] In the above-mentioned method for hydrogenation reaction in the production of triethylaluminum catalyzed by aluminum-hydrogen structure activators, the aluminum powder is titanium-containing aluminum powder.

[0010] In the above-mentioned method for hydrogenation reaction in the production of triethylaluminum catalyzed by aluminum-hydrogen structure activator, the mass fraction of titanium in the titanium-containing aluminum powder is 0.1-0.3%.

[0011] In the above-mentioned method for hydrogenation reaction in the production of triethylaluminum catalyzed by aluminum-hydrogen structure activator, the molar ratio of aluminum-hydrogen structure activator to titanium-containing aluminum powder in the aluminum powder mixture is 0.5-1.5%.

[0012] In the above-mentioned method for hydrogenation reaction in the production of triethylaluminum using aluminum-hydrogen structure activators, the mass ratio of the aluminum powder mixture to the triethylaluminum mother liquor is 1:10-24.

[0013] In the above-mentioned method for hydrogenation reaction in the production of triethylaluminum using aluminum-hydrogen structure activators, the temperature after heating is 100-120℃.

[0014] In the above-mentioned method for hydrogenation reaction in the production of triethylaluminum using aluminum-hydrogen structure activators, the pressure of the reactor during the reaction process is 10-12 MPa.

[0015] In the above-mentioned method for hydrogenation reaction in the production of triethylaluminum catalyzed by aluminum-hydrogen structure activator, the reactor is placed in a closed environment and the water and oxygen content in the reactants is controlled to be less than 1 ppm.

[0016] In the above-mentioned method for hydrogenation reaction in the production of triethylaluminum using aluminum-hydrogen structure activators, the hydrogenation reaction time is 4-7 hours.

[0017] Compared with existing technologies, the advantages of this invention are: 1. This invention provides a hydrogenation reaction by introducing an aluminum-hydrogen structure activator, which effectively improves the hydrogenation reaction rate and production efficiency, while reducing side reactions and lowering production costs. At the same time, the activator is easy to add without adding extra process burden, and related by-products are easy to remove without affecting the environment and production safety.

[0018] 2. The aluminum-hydrogen structure activator in this invention is sodium hydride or sodium aluminum hydride. Since both sodium hydride and sodium aluminum hydride react extremely rapidly with hydrogen ions, they are typically used as strong bases in the prior art for hydrogen removal rather than hydrogenation. However, this application creatively discovers that sodium hydride and sodium aluminum hydride can serve as a hydrogen transfer platform; under high hydrogen pressure and in the presence of triethylaluminum, their surfaces can undergo H2O2 formation. - The rapid and reversible conversion of H2 occurs. The Al-Ti / NaH / NaAlH4 interface forms a short-lived sodium-aluminum-hydrogen composite interface (such as the Na–H–Ti-Al bridging structure). This interface can simultaneously promote H2 dissociation and Al–H bond formation, acting similarly to a "non-metallic co-catalytic interface," but it is not consumed itself, exhibiting catalytic / activation characteristics of the apparent aluminum-hydrogen structure rather than a stoichiometric reduction reaction. This can shorten the activation stage of aluminum powder, i.e., the reaction induction period, thereby improving hydrogenation efficiency. Meanwhile, in traditional systems, excess active hydrogen or localized high temperatures easily lead to the direct hydrogenolysis of the Al–Et bond to ethane. NaH / NaAlH4 provides a structured, confined hydrogen transfer pathway, which is more conducive to hydrogen participation in Al–H formation, rather than free-diffusion hydrogenolysis. Therefore, macroscopically, this manifests as a decrease in the selectivity of the by-product ethane. Attached Figure Description

[0019] Figure 1 Graphs showing the relationship between aluminum powder conversion rate and time in different embodiments and comparative examples; Figure 2 The diagram shows the reaction rates in different embodiments and comparative examples. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0021] Example 1 This embodiment provides a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator, comprising the following steps:

[0022] To control the oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of aluminum powder mixture were added to a 250 ml magnetically stirred reactor. The aluminum powder mixture included titanium-containing aluminum powder and NaH, with a molar ratio of NaH to titanium-containing aluminum powder of 0.5% and a titanium element mass fraction of 0.2% in the titanium-containing aluminum powder. The reactants in the reactor were heated to 100-120 °C using a circulating oil bath. High-pressure hydrogen gas was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen gas was continued to be introduced under constant pressure to stabilize the pressure inside the reactor. The hydrogenation reaction was carried out for 7 hours, yielding the target product diethylaluminum hydride and the hydrogenolysis byproduct ethane. After the hydrogenation reaction was completed, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash-evaporate the remaining hydrogen gas in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the analytical results were recorded. The conversion rate of aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0023] Example 2

[0024] This embodiment provides a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator, comprising the following steps: To control the oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of aluminum powder mixture were added to a 250 ml magnetically stirred reactor. The aluminum powder mixture included titanium-containing aluminum powder and NaH, with a molar ratio of NaH to titanium-containing aluminum powder of 1.0% and a titanium element mass fraction of 0.2% in the titanium-containing aluminum powder. The reactants in the reactor were heated to 100-120℃ using a circulating oil bath. High-pressure hydrogen was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen was continued to be introduced under constant pressure to stabilize the pressure inside the reactor. The hydrogenation reaction was carried out for 7 hours, yielding the target product diethylaluminum hydride and the hydrogenolysis byproduct ethane. After the hydrogenation reaction was completed, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash-evaporate the remaining hydrogen in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the analytical results were recorded. The conversion rate of aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0025] Example 3

[0026] This embodiment provides a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator, comprising the following steps: To control the oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of aluminum powder mixture were added to a 250 ml magnetically stirred reactor. The aluminum powder mixture included titanium-containing aluminum powder and NaH, with a molar ratio of NaH to titanium-containing aluminum powder of 2.0% and a titanium element mass fraction of 0.2% in the titanium-containing aluminum powder. The reactants in the reactor were heated to 100-120 °C using a circulating oil bath. High-pressure hydrogen gas was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen gas was continued to be introduced under constant pressure to stabilize the pressure inside the reactor. The hydrogenation reaction was carried out for 7 h, yielding the target product diethylaluminum hydride and the hydrogenolysis byproduct ethane. After the hydrogenation reaction was completed, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash evaporate the remaining hydrogen gas in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the analytical results were recorded. The conversion rate of aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0027] Example 4

[0028] This embodiment provides a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator, comprising the following steps: To control the oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of aluminum powder mixture were added to a 250 ml magnetically stirred reactor. The aluminum powder mixture included titanium-containing aluminum powder and NaH, with a molar ratio of NaH to titanium-containing aluminum powder of 5.0% and a titanium element mass fraction of 0.2% in the titanium-containing aluminum powder. The reactants in the reactor were heated to 100-120 °C using a circulating oil bath. High-pressure hydrogen gas was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen gas was continued to be introduced under constant pressure to stabilize the pressure inside the reactor. The hydrogenation reaction was carried out for 7 hours, yielding the target product diethylaluminum hydride and the hydrogenolysis byproduct ethane. After the hydrogenation reaction was completed, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash-evaporate the remaining hydrogen gas in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the analytical results were recorded. The conversion rate of aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0029] Example 5

[0030] This embodiment provides a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator, comprising the following steps: To control the oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of aluminum powder mixture were added to a 250 ml magnetically stirred reactor. The aluminum powder mixture included titanium-containing aluminum powder and NaAlH4, with a molar ratio of NaAlH4 to titanium-containing aluminum powder of 0.5% and a titanium element mass fraction of 0.2% in the titanium-containing aluminum powder. The reactants in the reactor were heated to 100-120℃ using a circulating oil bath. High-pressure hydrogen gas was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen gas was continued to be introduced under constant pressure to stabilize the pressure inside the reactor. The hydrogenation reaction was carried out for 7 hours, yielding the target product diethylaluminum hydride and the hydrogenolysis byproduct ethane. After the hydrogenation reaction was completed, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash evaporate the remaining hydrogen gas in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the analytical results were recorded. The conversion rate of aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0031] Example 6

[0032] This embodiment provides a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator, comprising the following steps: To control the oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of aluminum powder mixture were added to a 250 ml magnetically stirred reactor. The aluminum powder mixture included titanium-containing aluminum powder and NaAlH4, with a molar ratio of NaAlH4 to titanium-containing aluminum powder of 1.0%, and the titanium content in the titanium-containing aluminum powder was 0.2% by mass. The reactants in the reactor were heated to 100-120 °C using a circulating oil bath. High-pressure hydrogen gas was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen gas was continued to be introduced under constant pressure to stabilize the pressure inside the reactor. The hydrogenation reaction was carried out for 7 h, yielding the target product diethylaluminum hydride and the hydrogenolysis byproduct ethane. After the hydrogenation reaction was completed, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash-evaporate the remaining hydrogen gas in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the analytical results were recorded. The conversion rate of aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0033] Example 7

[0034] This embodiment provides a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator, comprising the following steps: To control the oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of aluminum powder mixture were added to a 250 ml magnetically stirred reactor. The aluminum powder mixture included titanium-containing aluminum powder and NaAlH4, with a molar ratio of NaAlH4 to titanium-containing aluminum powder of 2.0%, and the titanium content in the titanium-containing aluminum powder was 0.2% by mass. The reactants in the reactor were heated to 100-120 °C using a circulating oil bath. High-pressure hydrogen was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen was continued to be introduced under constant pressure to stabilize the pressure. The hydrogenation reaction was carried out for 7 hours, yielding the target product diethylaluminum hydride and the hydrogenolysis byproduct ethane. After the hydrogenation reaction was completed, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash-evaporate the remaining hydrogen in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the results were recorded. The conversion rate of aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0035] Example 8

[0036] This embodiment provides a method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator, comprising the following steps: To control the oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of aluminum powder mixture were added to a 250 ml magnetically stirred reactor. The aluminum powder mixture included titanium-containing aluminum powder and NaAlH4, with a molar ratio of NaAlH4 to titanium-containing aluminum powder of 5.0%, and the titanium content in the titanium-containing aluminum powder was 0.2% by mass. The reactants in the reactor were heated to 100-120 °C using a circulating oil bath. High-pressure hydrogen was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen was continued to be introduced under constant pressure to stabilize the pressure. The hydrogenation reaction was carried out for 7 hours, yielding the target product, diethylaluminum hydride, and the hydrogenolysis byproduct, ethane. After the hydrogenation reaction was completed, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash-evaporate the remaining hydrogen in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the results were recorded. The conversion rate of the aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0037] Comparative Example 1 This comparative example provides a method for hydrogenation reaction (adding only titanium-aluminum powder), including the following steps: To control the oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of titanium-containing aluminum powder (with a titanium content of 0.2%) were added to a 250 ml magnetically stirred reactor. The reactants in the reactor were heated to 100-120 °C using a circulating oil bath. High-pressure hydrogen was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen was continued to be introduced under constant pressure to stabilize the pressure. The hydrogenation reaction was carried out for 7 hours, yielding the target product, diethylaluminum hydride, and the hydrogenolysis byproduct, ethane. After the hydrogenation reaction was complete, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash-evaporate the remaining hydrogen in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the results were recorded. The conversion rate of the aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0038] Comparative Example 2 This comparative example provides a method for a hydrogenation reaction (adding titanium-free aluminum powder and NaH), including the following steps: To control the water and oxygen content in the glove box to below 1 ppm, 100 g of triethylaluminum mother liquor and 8 g of an aluminum powder mixture were added to a 250 ml magnetically stirred reactor. The aluminum powder mixture consisted of aluminum powder and NaH, with a NaH to aluminum powder molar ratio of 5.0%. The reactants in the reactor were heated to 100-120 °C using a circulating oil bath. High-pressure hydrogen gas was introduced until the pressure inside the reactor reached 10-12 MPa, and hydrogen gas was continued to be introduced under constant pressure to stabilize the pressure inside the reactor. The hydrogenation reaction was carried out for 7 hours, yielding the target product, diethylaluminum hydride, and the hydrogenolysis byproduct, ethane. After the hydrogenation reaction was completed, the temperature was lowered to room temperature, and the vent valve was slowly opened to flash-evaporate the remaining hydrogen gas in the reactor. Small amounts of hydrogenated samples and vented air samples were taken for gas and liquid sample analysis, and the analytical results were recorded. The conversion rate of aluminum powder and the degree of hydrogenolysis reaction were verified and evaluated.

[0039] Application Example 1 The aluminum powder conversion rate and time relationship in Examples 1-8 and Comparative Examples 1-2, and the reaction rate as follows: Figure 1-2As shown in the figure, the experimental data above demonstrate that, under the condition of maintaining a consistent molar amount of sodium in the system, using sodium hydride and sodium aluminum hydride as external activators for the hydrogenation reaction of aluminum powder can significantly improve the hydrogenation efficiency. Compared with sodium hydride, the reaction induction period is significantly shortened when using sodium aluminum hydride, the formation rate of diethylaluminum hydride is increased, the final conversion rate is higher, and the ethane by-product is significantly reduced. This is mainly because the two hydrogen "release methods" are completely different. NaH has only one hydrogen and is a strong ionic bond, requiring dissociation-surface contact-hydrogen migration before participating in the reaction. NaAlH4, on the other hand, has four Al-H bonds, enabling rapid hydrogen exchange between Al-H and Al-C. This result indicates that sodium aluminum hydride does not simply function through sodium in this reaction system; its Al–H structure plays a crucial role in the reaction activation. NaAlH4 provides a "multi-site, cyclical hydrogen transfer platform" during the hydrogenation reaction, significantly improving the reaction efficiency, while NaH is closer to a one-time, limited hydrogen donor.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A method for catalyzing the hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator, characterized in that, Includes the following steps: Triethylaluminum mother liquor and a mixture of aluminum powder premixed with an aluminum-hydrogen structure activator were added to a reactor. The mixture was heated under stirring, hydrogen was introduced and pressurized. During the reaction, the hydrogen was continuously introduced to ensure that the reactor was under constant pressure. After the reaction was completed, the target product diethylaluminum hydride and the hydrogenolysis byproduct ethane were obtained.

2. The method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as described in claim 1, characterized in that: The aluminum-hydrogen structure activator is sodium hydride or sodium aluminum hydride.

3. The method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as described in claim 1, characterized in that: The aluminum powder is titanium-containing aluminum powder.

4. The method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as described in claim 3, characterized in that: The mass fraction of titanium in the titanium-containing aluminum powder is 0.1-0.3%.

5. The method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as described in claim 3, characterized in that: The molar ratio of aluminum hydrogen structure activator to titanium-containing aluminum powder in the aluminum powder mixture is 0.5-1.5%.

6. The method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as described in claim 1, characterized in that: The mass ratio of the aluminum powder mixture to the triethylaluminum mother liquor is 1:10-24.

7. The method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as described in claim 1, characterized in that: The temperature after heating is 100-120℃.

8. The method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as described in claim 1, characterized in that: The pressure in the reactor during the reaction is 10-12 MPa.

9. The method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as described in claim 1, characterized in that: The reactor is placed in a closed environment to control the water and oxygen content in the reactants to be below 1 ppm.

10. The method for hydrogenation reaction in the production of triethylaluminum using an aluminum-hydrogen structure activator as described in claim 1, characterized in that: The hydrogenation reaction takes 4-7 hours.

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