Silver exchange molecular sieve adsorbent for efficiently separating N2O/CO2 and preparation method of silver exchange molecular sieve adsorbent
A technology of molecular sieves and adsorbents, which is applied in the field of silver-exchanged molecular sieve adsorbents for efficient separation of N2O/CO2 and its preparation, can solve problems such as separation difficulties, and achieve the effects of simple preparation methods, good application prospects, and easy mass production
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0030] A high-efficiency separation of N 2 O / CO 2 The preparation method of the silver-exchanged molecular sieve adsorbent is realized through the following steps:
[0031] (1) Add 1g of 13X molecular sieve to 60mL of 0.1mol / mL AgNO 3 In the aqueous solution, heat and stir at 80°C for 1 hour, perform a silver exchange, and keep the total amount of the solution unchanged during the heating process;
[0032] (2) The silver-exchanged molecular sieves in step (1) were washed with deionized water, filtered, and dried at 120°C for 24 hours to obtain silver-exchanged 13X molecular sieves;
[0033] (3) The silver-exchanged 13X molecular sieve obtained in step (2) was vacuum activated at 200°C for 5 hours to obtain Ag + The X-2 molecular sieve adsorbent with an exchange degree of 84%; then test the N of the X-2 molecular sieve 2 O / CO 2 gas adsorption separation performance.
Embodiment 2
[0035] A high-efficiency separation of N 2 O / CO 2 The preparation method of the silver-exchanged molecular sieve adsorbent is realized through the following steps:
[0036] (1) Add 1g of 5A molecular sieve to 60mL of 0.1mol / mL AgNO 3 In the aqueous solution, heat and stir at 80°C for 1 hour, perform a silver exchange, and keep the total amount of the solution unchanged during the heating process;
[0037] (2) The silver-exchanged molecular sieve in step (1) was washed with deionized water, filtered, and dried at 120°C for 24 hours to obtain a silver-exchanged 5A molecular sieve;
[0038] (3) Vacuumize and activate the 5A molecular sieve obtained in step (2) at 200°C for 5 hours to obtain Ag + The A-2 molecular sieve adsorbent with an exchange degree of 73%; then test the N of the A-2 molecular sieve 2 O / CO 2 gas adsorption separation performance.
Embodiment 3
[0040] A high-efficiency separation of N 2 O / CO 2 The preparation method of the silver-exchanged molecular sieve adsorbent is realized through the following steps:
[0041] (1) Add 1g of 13X molecular sieve to 70mL of 0.3mol / mL AgNO 3 solution, and then heated and stirred at 60°C for 2 hours to perform a silver exchange, keeping the total amount of the solution unchanged during the heating process;
[0042] (2) The silver-exchanged molecular sieves in step (1) were washed with deionized water, filtered, and dried at 100°C for 24 hours to obtain silver-exchanged 13X molecular sieves;
[0043] (3) The silver-exchanged 13X molecular sieve obtained in step (2) was vacuum activated at 180°C for 10 hours to obtain Ag + The X-3 molecular sieve adsorbent with an exchange degree of 88%; then test the N of the X-3 molecular sieve 2 O / CO 2 gas adsorption separation performance.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More