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Method for preparing lamina sodium silicate calcium or magnesium ion exchange material

A layered sodium silicate, calcium and magnesium ion technology, applied in chemical instruments and methods, silicon compounds, petroleum industry, etc., to achieve the effect of good bearing capacity and anti-wear ability

Inactive Publication Date: 2010-06-30
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a method for preparing layered sodium calcium magnesium ion exchange material, which aims to solve the technical problems that cannot be solved by conventional methods in the prior art, thereby disclosing a preparation method by slowly adding calcium or magnesium ion solution Kanemite ion exchange material capable of being used as a solid lubricating additive and a technical proposal for its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0016] Prepare a 0.039mol / L calcium chloride solution, cool the solution to 5°C, put 2g kanemite into a 250ml beaker, stir magnetically for 10 minutes, control the dropping speed to 20 drops / min, slowly drop 60ml calcium chloride solution Add it into a beaker, and after the titration, continue to stir at room temperature for 0.5 hour, centrifuge to obtain a solid sample, air-dry at room temperature, and obtain a product with an exchange degree of 47%.

Embodiment approach 2

[0018] Prepare 0.0585mol / L calcium chloride solution, cool the solution to 10°C, put 3g kanemite into a 250ml beaker, stir magnetically for 15 minutes, control the dropping speed to 28 drops / min, slowly add 90ml calcium chloride solution dropwise In the beaker, after the titration, continue to stir at room temperature for 0.5 hour, centrifuge to obtain a solid sample, air-dry at room temperature, and obtain a product with an exchange degree of 50%.

Embodiment approach 3

[0020] Prepare a 0.078mol / L calcium chloride solution, cool the solution to 8°C, put 5g kanemite into a 250ml beaker, stir it magnetically for 20 minutes, control the dropping speed to 50 drops / min, slowly drop 150ml calcium chloride solution Add it into a beaker, and after the titration, continue to stir at room temperature for 0.5 hour, centrifuge to obtain a solid sample, air-dry at room temperature, and obtain a product with an exchange degree of 58%.

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PUM

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Abstract

The invention relates to a method for preparing a lamina sodium silicate calcium or magnesium ion exchange material, in particular to a method for preparing a kanemite calcium or magnesium ion exchange material by dropwise adding calcium or magnesium ion solution slowly, which belongs to the field of inorganic materials. The method is characterized by using a calcium chloride or magnesium chloride solution as the calcium or magnesium ion solution; and the method comprise the steps of: firstly, controlling the temperature of the calcium chloride or magnesium chloride solution to be 15 DEG C; then, dropwise adding the calcium chloride or magnesium chloride solution into a beaker containing kanemite slowly; and finally, stirring up to prepare the kanemite calcium or magnesium ion exchange material. The material has intact lamina crystal texture and high ion exchange degree, the ion exchange degree of the kanemite calcium ion exchange material can reach 81.5 percent, and the ion exchange degree of the kanemite magnesium ion exchange material can reach 72 percent. The material has great carrying capacity and abrasion resistance, so that the material can be used as a beneficial solid lubricating additive.

Description

technical field [0001] The invention relates to a method for preparing layered sodium calcium magnesium ion exchange material, which belongs to the field of inorganic materials, and specifically relates to a method for preparing kanemite calcium magnesium ion exchange material by slowly dropping calcium or magnesium ion solution . Background technique [0002] Layered sodium silicate is a kind of inorganic crystal with the characteristics of intercalation compounds. Its laminates are composed of negatively charged silicon and oxygen tetrahedrons, and the laminates are charged by positively charged Na + balance. The previous research results found that the layered sodium disilicate has good performance as a solid lubricant additive, which can effectively improve the lubricating properties of lubricating oil. However, the direct use of layered sodium disilicate has shortcomings such as insufficient loading capacity, poor wear resistance due to large solid particle diameter, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/38C10M125/26
Inventor 董晋湘陈钊锋徐红李晋平
Owner TAIYUAN UNIV OF TECH