{"id":2271,"date":"2023-10-19T13:24:01","date_gmt":"2023-10-19T05:24:01","guid":{"rendered":"http:\/\/www3.laiko.net\/all\/performance-of-molecular-sieve\/"},"modified":"2023-10-19T13:27:22","modified_gmt":"2023-10-19T05:27:22","slug":"performance-of-molecular-sieve","status":"publish","type":"post","link":"https:\/\/www.laiko.net\/fr\/performance-du-tamis-moleculaire\/","title":{"rendered":"Performance du tamis mol\u00e9culaire"},"content":{"rendered":"<div class=\"flexbox smcenter other_page richtext\">\n<div class=\"flex-right\">\n<h1>Performance du tamis mol\u00e9culaire<\/h1>\n<p><\/p>\n<div class=\"inner_box\">\n<h2>1. Qu'est-ce qu'un tamis mol\u00e9culaire ?<\/h2>\n<p>Le tamis mol\u00e9culaire est un aluminosilicate hydrat\u00e9 synth\u00e9tique (z\u00e9olithe \u00e0 bulles) ou une z\u00e9olithe naturelle ayant pour fonction de filtrer les mol\u00e9cules. Les tamis mol\u00e9culaires ont une structure microporeuse uniforme, et ces minuscules pores ont un diam\u00e8tre uniforme, ce qui permet d'adsorber des mol\u00e9cules plus petites que leur diam\u00e8tre dans les pores, s\u00e9parant ainsi des mol\u00e9cules de diam\u00e8tres diff\u00e9rents, de polarit\u00e9s diff\u00e9rentes, de points d'\u00e9bullition diff\u00e9rents et de saturations diff\u00e9rentes, ce qui leur conf\u00e8re la fonction de \"tamisage\" des mol\u00e9cules.<\/p>\n<p><\/p>\n<h2>2. Types de tamis mol\u00e9culaires<\/h2>\n<p>Les tamis mol\u00e9culaires diff\u00e8rent en fonction de la taille des pores. Les types de tamis mol\u00e9culaires sont les suivants : type A : potassium A (3A), sodium A (4A), calcium A (5A) ; type X : calcium X (10X), sodium X (13X) ; type Y : sodium Y, calcium Y, etc. Les tamis mol\u00e9culaires ont une capacit\u00e9 d'adsorption \u00e9lev\u00e9e, une forte s\u00e9lectivit\u00e9 et une r\u00e9sistance aux temp\u00e9ratures \u00e9lev\u00e9es.<\/p>\n<p><\/p>\n<h2>3. Les caract\u00e9ristiques du tamis mol\u00e9culaire sont les suivantes :<\/h2>\n<p><strong>(1) Adsorption<\/strong><\/p>\n<p><\/p>\n<p>L'adsorption des tamis mol\u00e9culaires sur les substances provient de l'adsorption physique, et sa cavit\u00e9 cristalline pr\u00e9sente une forte polarit\u00e9 et un champ de Coulomb, et montre une forte capacit\u00e9 d'adsorption pour les mol\u00e9cules polaires et les mol\u00e9cules insatur\u00e9es.<\/p>\n<p><\/p>\n<p><strong>(2) Performance de l'\u00e9change d'ions<\/strong><\/p>\n<p><\/p>\n<p>D'une mani\u00e8re g\u00e9n\u00e9rale, l'\u00e9change d'ions d\u00e9signe l'\u00e9change de cations de compensation en dehors du cadre du tamis mol\u00e9culaire z\u00e9olithique. Les ions de compensation en dehors du cadre du tamis mol\u00e9culaire z\u00e9olithique sont g\u00e9n\u00e9ralement des protons et des m\u00e9taux alcalins ou alcalino-terreux, qui sont facilement \u00e9chang\u00e9s dans divers tamis mol\u00e9culaires z\u00e9olithiques de type ions m\u00e9talliques de valence dans la solution aqueuse de sels m\u00e9talliques. Les ions migrent plus facilement dans certaines conditions, telles que les solutions aqueuses ou les temp\u00e9ratures \u00e9lev\u00e9es.<\/p>\n<p><\/p>\n<p>En solution aqueuse, en raison de la s\u00e9lectivit\u00e9 ionique diff\u00e9rente des tamis mol\u00e9culaires z\u00e9olithiques, diff\u00e9rentes propri\u00e9t\u00e9s d'\u00e9change d'ions peuvent \u00eatre pr\u00e9sent\u00e9es. La r\u00e9action hydrothermale d'\u00e9change d'ions entre les cations m\u00e9talliques et les tamis mol\u00e9culaires z\u00e9olithiques est un processus de diffusion libre. La vitesse de diffusion limite la vitesse de la r\u00e9action d'\u00e9change. L'\u00e9change d'ions permet de modifier la taille des pores du tamis mol\u00e9culaire z\u00e9olithique, ce qui modifie ses performances et permet d'atteindre l'objectif d'adsorption s\u00e9lective et de s\u00e9paration du m\u00e9lange.<\/p>\n<\/p><\/div>\n<div class=\"pro_detail\"><\/div>\n<p><\/p>\n<p class=\"linkh2\">\n<p><\/p>\n<div class=\"more_art_list\"><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"other_page\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Performance of Molecular Sieve 1. What is a molecular sieve? Molecular sieve is a synthetic hydrated aluminosilicate (bubble zeolite) or natural zeolite with the function of screening molecules. Molecular sieves have a uniform microporous structure, and these tiny pores have a uniform diameter, which can adsorb molecules smaller than their diameter into the pores, thereby [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_joinchat":[],"footnotes":""},"categories":[1,54],"tags":[],"class_list":["post-2271","post","type-post","status-publish","format-standard","hentry","category-all","category-blog"],"blocksy_meta":"","featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":"","trp-custom-language-flag":"","woocommerce_thumbnail":"","woocommerce_single":"","woocommerce_gallery_thumbnail":""},"post_excerpt_stackable":"<p>Performance of Molecular Sieve 1. What is a molecular sieve? Molecular sieve is a synthetic hydrated aluminosilicate (bubble zeolite) or natural zeolite with the function of screening molecules. Molecular sieves have a uniform microporous structure, and these tiny pores have a uniform diameter, which can adsorb molecules smaller than their diameter into the pores, thereby separating molecules with different diameters, different polarities, different boiling points, and different saturations, so that it has the function of &#8220;sieving&#8221; molecules. 2. Types of molecular sieve Molecular sieves are different according to the pore size, molecular sieve types are A type: potassium A (3A),\u2026<\/p>\n","category_list":"<a href=\"https:\/\/www.laiko.net\/fr\/category\/tous\/\" rel=\"category tag\">All<\/a>, <a href=\"https:\/\/www.laiko.net\/fr\/category\/blog\/\" rel=\"category tag\">Blog<\/a>","author_info":{"name":"adminn","url":"https:\/\/www.laiko.net\/fr\/author\/adminn\/"},"comments_num":"0 commentaire","_links":{"self":[{"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/posts\/2271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/comments?post=2271"}],"version-history":[{"count":1,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/posts\/2271\/revisions"}],"predecessor-version":[{"id":2429,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/posts\/2271\/revisions\/2429"}],"wp:attachment":[{"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/media?parent=2271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/categories?post=2271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laiko.net\/fr\/wp-json\/wp\/v2\/tags?post=2271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}