Chemical dehydration method in magnesium methoxide production based on initiator

A technology for chemical dehydration and magnesium methoxide, applied in the field of magnesium methoxide production, can solve the problems of rising water content, affecting the progress of magnesium methoxide production, affecting the progress of the reaction, etc.

Pending Publication Date: 2022-04-15
CHONGQING KOOPPER CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a chemical dehydration method in the production of magnesium methoxide based on an initiator, so as to solve the problem that in the prior art, in the process of utilizing methanol and magnesium powder to produce magnesium methoxide, the reaction kettle is affected by water or the magnesium powder is damp. Problems with the production schedule of magnesium methoxide
[0006] The principle and advantages of this scheme are: in actual application, in this technical scheme, in the production process of magnesium methoxide, due to reasons such as water inflow into the reactor or moisture in the magnesium powder, the water content in the system increases, and magnesium reacts with water to form A dense layer of inert magnesium hydroxide, which affects the progress of the reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Reaction with high water content due to methanol

[0027] 200 ml of anhydrous methanol (water content ≤ 0.02 wt%) was added to 2% by weight of tap water, and fresh magnesium powder was added, and there was no phenomenon in the bottle or a small amount of small bubbles were produced. After 15 minutes, heated until 45 degrees, the reaction was slow to start.

Embodiment 2

[0028] Example 2: Adding a dehydrating agent for the addition of high water content due to high methanol

[0029] 200 ml of anhydrous methanol (water content ≤ 0.02 wt%) was added to 2 wt% of tap water, add fresh magnesium powder, and there is no phenomenon in the bottle or a small amount of small bubbles.

[0030] The addition of 2 mol% of the dehydrating agent is added, the dehydrator is acetic anhydride, and the liquid and magnesium powder in the 30s in the 30s in the 30s in the 30s liquid and magnesium powder are bubbles.

Embodiment 3

[0031] Example 3: The present embodiment differs from the second embodiment in that the addition of the dehydrated agent is propionic anhydride, and the liquid and magnesium powder are slightly in the 100S without heating.

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PUM

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Abstract

The invention relates to the technical field of magnesium methoxide production, and discloses a chemical dehydration method in magnesium methoxide production based on an initiator, a dehydrating agent is added into a reaction system of methanol and magnesium, and the dehydrating agent is one or more of C2-C6 acid anhydrides. In the technical scheme, the anhydride not only plays a role in dehydration in an initiation system of magnesium methoxide, and the dehydrated reactant organic acid (such as acetic acid) can further strip a compact oxide layer which hinders the reaction, so that the reaction is promoted to be initiated more quickly, and the method has popularization and application values.

Description

Technical field [0001] The present invention relates to the field of methanol magnesium production, and more particularly to a chemical dehydration method based on initiator-based methanol magnesium production. Background technique [0002] Magnesium methanol, molecular formula is C 2 Hide 6 MGO 2 The molecular weight is 86.37, which belongs to metal alcohol salts, widely used in medical, national defense and other fields; mainly used for organic synthesis of selective substrates, neutralizing agents in anhydrous system, and is also the main raw material of high purity magnesium oxide. Through the study, methanol magnesium is often applied to catalysts in organic synthesis reactions, especially in synthesis of ketime compounds. [0003] At present, the synthesis of methanol magnesium is mainly directly synthesized, alkyl magnesium method, alcohol solution and lipolysis. At present, the application is more widely used with methanol and magnesium powder to synthesize methanol magne...

Claims

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Application Information

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IPC IPC(8): C07C29/70C07C29/94C07C31/28
Inventor 倪潇邹潜何成垚王天宇庞方亮徐志刚刘进肖雪梅
Owner CHONGQING KOOPPER CHEM IND
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