Preparation method and application of EMM-8 aluminum phosphate molecular sieve

Abstract

The invention provides an EMM-8 aluminum phosphate molecular sieve and a preparation method thereof, and relates to an application of the EMM-8 aluminum phosphate molecular sieve. The EMM-8 aluminum phosphate molecular sieve can be used for realizing adsorption heat storage, a heat pump and refrigeration at low temperature. The EMM-8 aluminum phosphate molecular sieve provided by the invention is synthesized under a hydrothermal condition by taking 4-DMAPy(4-dimethylaminopyridine) as a template agent, HF as a mineralizer and a phosphorus source and an aluminum source adopted by conventional molecular sieve synthesis as raw materials. The synthesized molecular sieve isroasted in air at the temperature of 550-600 DEG C for 6 hours to remove the template, and water adsorption tests is carried out on the molecular sieve without the template at different temperatures and different partial pressures to obtain adsorption isotherms at different temperatures. Thermodynamic calculation is carried out according to the adsorption isotherms, and the heat storage capacity, the heat pump performance and the refrigeration performance of an air conditioner and a refrigerator are evaluated.

Description

Technical field[0001]The present invention belongs to the adsorption type heat storage, heat pump, and refrigeration field, which relates to an EMM-8 phosphate molecular sieve and preparation method thereof, and involves the use of the EMM-8 phosphate molecular sieve, more particularly to EMM-8 phosphate molecular sieve as a Adsorption of heat storage materials, heat pump materials and refrigeration materials.Background technique[0002]Due to the large number of traditional fossil energy, we face severe energy and environmental problems, the demand for low-grade heat and renewable energy is getting bigger. However, these energy forms often have a low utilization rate, intermittent volatility, so higher requirements are made for heat storage energy. The main heat storage mode has three kinds of thermal, latent heat and thermochemistry. Compared with other heat storage modes: the heat storage density is large, the heat loss is small, suitable for long-term storage, and heat pump and re...

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Problems solved by technology

[0006] The existing commercial adsorption materials have high requirements on energy grade, are not suitable for the application of lower grade energy, and have low water vapor adsorption capacity, low heat storage density, insufficient hydrothermal stability, heat storage capacity, heat pump performance, and air-conditioning refrigeration performance, etc. Shortcomings and deficiencies, the present invention provides an EMM-8 aluminum phosphate molecular sieve and its preparation method, and relates to the use of the EMM-8 aluminum phosphate molecular sieve as an adsorption heat storage material, heat pump material and refrigeration material

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