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A method of regulating relative humidity

A technology of humidity adjustment and composition, which is applied in the direction of chemical instruments and methods, and other chemical processes, can solve the problems that the relative humidity value cannot be adjusted, the range of relative humidity is limited, and there is no design, so as to achieve a wide range of relative humidity and expand range effect

Inactive Publication Date: 2015-07-29
RENMIN UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, there are also some limitations: for example, the use of two-component saturated salt solution to adjust the relative humidity range is very limited, which is not very designable, and some specific relative humidity values ​​cannot be adjusted to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1, humidity regulating composition a

[0032] 60g of deionized water and 20g of ionic liquids (respectively 1-n-hexyl-3-methylimidazolium tetrafluoroboric acid, 1-n-hexyl-3-methylimidazolium trifluoromethylsulfonimide or 1 -n-hexyl-3-methylimidazolium hexafluorophosphoric acid) composition a was added to a 250mL beaker, mixed by ultrasonic method for 10 minutes, then left to stand for 30 minutes, and then put into a 300×300×275mm vacuum drying oven At the same time, put in the relative humidity display meter, set the temperature at 30°C, and after 9 hours, the reading of the relative humidity meter will basically remain unchanged, and the humidity value at this time can be regarded as the equilibrium relative humidity value.

[0033] The relative humidity values ​​adjusted by the above three kinds of ionic liquids were 76.3%, 78.0%, and 82.9%, respectively.

[0034] As a contrast, in the above-mentioned drying box, when the composition a is not placed, the r...

Embodiment 2

[0036] Embodiment 2, humidity regulating composition a

[0037] The ionic liquid (respectively 1-butyl-3-methylimidazole bistrifluoromethylsulfonimide, N-butylpyridine bistrifluoromethylsulfonimide or Composition a composed of tetramethylquaternary phosphonium bistrifluoromethylsulfonimide) was added to a 250mL beaker, mixed by ultrasonic method for 10 minutes, then left to stand for 30 minutes, and then placed in a 300×300×275mm vacuum-dried Put the relative humidity display meter in the box at the same time, set the temperature at 30°C, the reading of the relative humidity meter will basically remain unchanged after 9 hours, and the humidity value at this time can be regarded as the equilibrium relative humidity value.

[0038] The relative humidity values ​​adjusted by the above three kinds of ionic liquids were 77.9%, 89.0%, and 92.6%, respectively.

[0039] As a contrast, in the above-mentioned drying box, when the composition a is not placed, the relative humidity in th...

Embodiment 3

[0041] Embodiment 3, humidity regulating composition a

[0042] By 60g deionized water and 20g variable chain length ionic liquid (respectively 1-methylimidazole bistrifluoromethylsulfonimide, 1-methyl-3-methylimidazole bistrifluoromethylsulfonimide , 1-ethyl-3-methylimidazole bistrifluoromethylsulfonimide, 1-butyl-3-methylimidazole bistrifluoromethylsulfonimide or 1-n-hexyl-3-methyl Composition a composed of imidazole bistrifluoromethylsulfonimide) was added into a 250mL beaker, mixed by ultrasonic method for 10 minutes and then left to stand for 30 minutes, then put into a 300×300×275mm vacuum oven and simultaneously Put in the relative humidity display meter, set the temperature at 30°C, and after 9 hours, the reading on the relative humidity meter will basically remain unchanged, and the humidity value at this time can be regarded as the equilibrium relative humidity value.

[0043] The relative humidity values ​​adjusted by the above five kinds of ionic liquids with vari...

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Abstract

The invention discloses a method for adjusting relative humidity. The method comprises a step of adjusting the relative humidity at a certain temperature by using two-component ionic liquid / water saturated solution and three-component an ionic liquid / ionic liquid / water saturated solution. Compared with a conventional method for adjusting the relative humidity, the method provided by the invention can widen an adjustment range of the relative humidity, specify the relative humidity and diversify the relative humidity.

Description

technical field [0001] The invention relates to a method for regulating relative humidity. Background technique [0002] Relative humidity regulation is widely used in many fields, including daily life, scientific research, and applied production. In daily life (such as indoors, in tents in cars, and in airplanes and spacecraft), relative humidity is often adjusted within a certain range in closed or quasi-closed spaces to make humans feel most comfortable. In scientific research (such as hygroscopicity experiments, research on the influence of relative humidity on the properties of substances), the relative humidity is often adjusted to a certain value in a closed or quasi-closed space, which can make the experiment repeatable and accurate. In industrial production, the relative humidity is often adjusted to a certain value in a closed or quasi-closed space (such as plant vegetable cultivation, cultural relics and archives protection), which can make the application produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00
Inventor 牟天成曹园园陈钰
Owner RENMIN UNIVERSITY OF CHINA
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