- 期刊
Adsorption and Desorption Properties of Several Molecular Sieves on Formaldehyde Gas
摘要
Static formaldehyde adsorption experiments were conducted on three types of molecular sieves(3A, 13X, and beta) made in the laboratory. The BET specific surface area and adsorption desorption isotherm curves of the samples were measured using low‐temperature nitrogen adsorption method. BET specific surface area and adsorption desorption isotherm curves of the samples were measured using low‐temperature nitrogen adsorption method. The pore volume and pore size distribution of each sample was calculated using density function theory. The effects of specific surface area, pore Size, and skeleton structure on the formaldehyde and nitrogen adsorption of the samples were measured using low‐temperature nitrogen adsorption method. The effects of specific surface area, pore size, and skeleton structure on the formaldehyde adsorption performance of beta and 13X molecular sieves were emphatically investigated. that the skeleton structure had a significant impact on the formaldehyde adsorption performance of beta and 13X molecular sieves. The thermal desorption experiment found that the greater the surface area, pore size, and skeleton structure, the greater the formaldehyde adsorption performance. desorption experiment found that the greater the heating rate, the greater the weight loss ratio of molecular sieve thermal desorption. more easily desorbed on beta molecular sieve than on 13X molecular sieveand 3A molecular sieve.