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Method for preparing silane coupler modified attapulgite

The technology of silane coupling agent and attapulgite is applied in the field of development and utilization of attapulgite to achieve the effect of good guiding, improving utilization value and utilization rate, and improving interaction force

Inactive Publication Date: 2006-10-11
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Utilizing the characteristics of the hydroxyl-rich structure of attapulgite, the use of ultrasonic means for dispersion treatment, and then the study of silane coupling agent modification has not been reported.

Method used

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  • Method for preparing silane coupler modified attapulgite
  • Method for preparing silane coupler modified attapulgite
  • Method for preparing silane coupler modified attapulgite

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Embodiment 1

[0030] The attapulgite used was raw ore of attapulgite collected from Xuyi, and the silane coupling agent was industrial grade KH570. The composition and content composition of attapulgite are shown in Table 1:

[0031] Element

MgO

Al 2 o 3

SiO 2

SO 2

K 2 o

CaO

TiO 2

MnO

Fe 2 o 3

Content (%)

8.2

11.9

63.8

1.0

1.9

1.6

1.4

0.5

9.7

[0032] (1) Acid treatment of attapulgite: 500 ml of 1 mol / l hydrochloric acid was added to 50 grams of attapulgite, stirred at 55°C for 60 minutes, then washed with deionized water to remove chloride ions, and then washed with 0.1 mol / l silver nitrate solution After detecting the absence of chloride ions, centrifugal dehydration, drying, and pulverization.

[0033] (2) Ultrasonic dispersion of attapulgite: Add 100 g of attapulgite to 200 ml of solution, and ultrasonically disperse for 10 minutes, in two steps of 5 minutes each time...

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Abstract

The invention relates to a method for preparing modified attapulgite by silane coupling agent, belonging to field of developing and using attapulgite. The invention employs attapulgite as raw material, treats it with acid, gets acidified attapulgite; then disperses with supersonic wave, and hydrolyzes silane coupling agent, finally, proceeds dehydration and condensation reaction with hydrolysate of silane coupling agent and attapulgite, and gets said product. The invention employs silane coupling agent to treat attapulgite, and increases the interaction between attapulgite and organic material. It is proved by FTIR that product realizes silane modification, which creats condition for enlarging application range and increasing application value for attapulgite.

Description

technical field [0001] A method for preparing attapulgite modified by a silane coupling agent belongs to the technical field of attapulgite development and utilization. Background technique [0002] Attapulgite is a kind of hydrous-rich magnesium aluminum silicate clay mineral, which has a unique layer chain crystal structure and very fine (about 0.01μm×1μm) rod-like and fibrous crystal forms, and is a natural nanomaterial. Its microstructure generally includes three levels: (1) Its basic structural unit is microrod or fibrous single crystal, referred to as rod crystal. (2) A rod crystal bundle formed by parallel aggregation of single crystals. (3) Various aggregates formed by stacking and stacking crystal bundles (including rod crystals). my country's attapulgite resources are very rich, in my country's Anhui Mingguang, Jiangsu Xuyi, Liuhe and other places are rich in reserves, only Xuyi County's existing attapulgite reserves are more than 67 million tons, accounting for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/40
Inventor 王兴国黄健花刘元法金青哲单良
Owner JIANGNAN UNIV
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