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Method for hydrothermally synthesizing analcime monocrystal

A synthetic method, analzem technology, applied in the direction of single crystal growth, single crystal growth, chemical instruments and methods, etc., can solve the problems of long preparation time and high energy consumption, and achieve simple and easy-to-control reactions, mild reaction conditions, and high-quality products. relatively simple effect

Inactive Publication Date: 2014-02-12
UNIV OF JINAN
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  • Claims
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Problems solved by technology

Germany's "German Applied Chemistry" (Angewandte Chemie International Edition 1999, 38, 2725-2727) reported that a 3 mm analcime single crystal was prepared at a hydrothermal temperature of 200 °C for 31 days, and the particle size increased, but organic reagents and fluoride were added , also has the disadvantages of long preparation time and high energy consumption

Method used

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  • Method for hydrothermally synthesizing analcime monocrystal
  • Method for hydrothermally synthesizing analcime monocrystal

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Embodiment 1

[0011] Weigh 3.865 g of solid NaOH and dissolve it in 160 mL of distilled water, put it into a beaker, add 1.201 g of Si powder at the same time, stir and react for 5 h at a water bath temperature of 90 °C to obtain a sodium silicate solution; weigh 1.947 g of solid NaOH and dissolve in Put 50 mL of distilled water into a beaker, add 0.576 g of Al powder, stir and react at room temperature to obtain a sodium metaaluminate solution; filter the sodium silicate solution and the sodium metaaluminate solution with filter paper, stir and mix, and then microwave Heating at 700 W and 90 °C for 0.5 h under the condition of full stirring, the precursor was obtained as a white gel; the precursor gel obtained in the above steps was added to the autoclave with a filling rate of 70%, and the reaction was carried out at a constant temperature of 200 °C for 3 d. After the reaction, centrifugally filter and wash with water until neutral; dry in a constant temperature drying oven at 80 °C for 12...

Embodiment 2

[0017] Weigh 3.865 g of solid NaOH and dissolve it in 160 mL of distilled water, put it into a beaker, add 1.201 g of Si powder at the same time, stir and react for 5 h at a water bath temperature of 90 °C to obtain a sodium silicate solution; weigh 1.947 g of solid NaOH and dissolve in Put 50 mL of distilled water into a beaker, add 0.576 g of Al powder, stir and react at room temperature to obtain a sodium metaaluminate solution; filter the sodium silicate solution and the sodium metaaluminate solution with filter paper, stir and mix, and then microwave Heating at 700 W and 90 °C for 0.5 h under the condition of full stirring, the precursor was white gel; the precursor gel obtained in the above steps was added to the autoclave with a filling rate of 70%, and the reaction was carried out at a constant temperature of 200 °C for 6 d. After the reaction, centrifugally filter and wash with water until neutral; dry in a constant temperature drying oven at 80 °C for 12 h to obtain a...

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Abstract

The invention belongs to the technical field of artificial synthesis of natural minerals and particularly relates to a synthetic method of an isometric system analcime monocrystal. The synthetic method is characterized by comprising the following steps of: (1) preparation of a sodium silicate solution, namely dissolving 3.865 grams of solid NaOH into 160mL of distilled water, then adding 1.201 grams of Si powder, carrying out water-bath reaction at 90 DEG C for 5 hours; (2) preparation of a sodium metalluminate solution, namely dissolving 1.947 grams of the solid NaOH into 50mL of the distilled water, and then adding 0.576 gram of Al powder, and sufficiently reacting under the condition of room temperature; (3) preparation of a precursor: respectively filtering the solutions, mixing, stirring, carrying out microwave heating, and carrying out stirring reaction for 0.5 hours; (4) placing the precursor in a high-pressure kettle, and carrying out thermostatic reaction at 200 DEG C for 3-6 days; (5) washing a product with distilled water to be neutral, and drying to obtain the analcime monocrystal with the size of about 120 micrometers.

Description

technical field [0001] The invention belongs to the technical field of artificial synthesis of natural minerals, in particular to a synthesis method of analcite single crystal. Background technique [0002] Analcime is an important class of mineral resources, a common feldspar-like mineral, with a unique internal structure and crystal chemical properties, leading to its special performance in catalysis, adsorption, ion exchange, etc. As one of the zeolite minerals, analcime is a new type of mineral resource that countries attach great importance to. Experts from various countries generally believe that the field of development and utilization of analcime is very broad, and the potential value of the market is huge. In order to further develop the special application of analzem in catalysis, adsorption, and ion exchange, it is necessary to study its basic physical and chemical properties such as crystal structure, crystal chemistry, and adsorption behavior. In view of the s...

Claims

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Application Information

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IPC IPC(8): C30B7/10C30B29/34
Inventor 孙中溪齐长林朱欣欣吴柳明范迎菊张卫民盛永丽葛东来
Owner UNIV OF JINAN
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