{"id":39210,"date":"2025-03-18T14:02:34","date_gmt":"2025-03-18T13:02:34","guid":{"rendered":"https:\/\/staging.thomar.de\/molecular-sieve\/"},"modified":"2026-10-01T17:38:39","modified_gmt":"2026-10-01T15:38:39","slug":"molecular-sieve","status":"publish","type":"page","link":"https:\/\/www.thomar.de\/en\/pharma-food\/molecular-sieve\/","title":{"rendered":"Molecular sieve"},"content":{"rendered":"\t\t
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Home<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Molecular Sieve<\/span><\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Molecular sieve, also known as zeolite, is a porous material capable of selectively adsorbing molecules of a specific size. This substance is frequently used as a desiccant and for the adsorption of gases in various industrial applications. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tPorous Structure\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tMolecular sieves have a large internal surface area because they consist of a lattice of micropores. The size of the pores varies depending on the type of molecular sieve. There are different types of molecular sieves with varying pore sizes and specific applications. \t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tSelective Adsorption\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tDue to their micropores, molecular sieves can selectively adsorb certain molecules while allowing others to pass through. Only molecules with a smaller diameter than the micropores of the molecular sieve can enter the pores. This makes them useful for applications such as dehumidifying air and gases. \t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\tMolecular sieves are often used in desiccant products to dehumidify air or gases. They adsorb water from the air and retain it in their pores. \t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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For dehumidifying air within medication packaging or other sensitive products that need to be protected from moisture, molecular sieves with high water absorption capacity are used. Typically, Zeolite A molecular sieve with a pore size of 3 or 4 Angstroms is employed. <\/p><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tZeolite 3A (Molecular Sieve Type 3A)\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tThis zeolite has a pore size of 3 Angstroms (\u00c5) = 0.3 nm, which makes it particularly suitable for adsorbing water molecules. This pore size is too small for solvents to be adsorbed. Zeolite 3A is often used to remove water from air or gases, especially when it comes to protecting sensitive products like medicines. \t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tZeolite 4A (Molecular Sieve Type 4A)\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tSimilar to Zeolite 3A, Zeolite 4A also has a high affinity for water molecules. It is also frequently used in desiccant products to adsorb moisture from the air and thus protect sensitive goods. \t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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These types of molecular sieves are produced in the form of beads or granules and packaged in bags or canisters, or pressed into tablet form. These are then added to pharmaceutical or nutraceutical products in their packaging. The adsorption process allows these molecular sieves to bind water and thus dehumidify the air in the packaging. This improves the stability and shelf life of the products to be protected. <\/span><\/p><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Difference from silica gel<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Molecular sieves bind water molecules independently of ambient humidity, i.e., even below 10% relative humidity. However, they have a lower absorption capacity than silica gel. They are used for particularly sharp drying or to protect products at the lowest possible relative humidity of close to 0% within the packaging. <\/p>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Molecular Sieve Molecular sieve, also known as zeolite, is a porous material capable of selectively adsorbing molecules of a specific size. This substance is frequently used as a desiccant and for the adsorption of gases in various industrial applications. Porous Structure Molecular sieves have a large internal surface area because they consist of a lattice […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":41941,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"anwendungsbereiche":[],"class_list":["post-39210","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nMolecular sieve | ThoMar<\/title>\n<meta name=\"description\" content=\"For moisture-sensitive pharma and nutra products, molecular sieve can be the right packaging solution. 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