{"id":3008,"date":"2025-09-25T07:17:12","date_gmt":"2025-09-25T07:17:12","guid":{"rendered":"https:\/\/cpxzx.com\/?post_type=product&#038;p=3008"},"modified":"2025-09-25T07:17:12","modified_gmt":"2025-09-25T07:17:12","slug":"peneira-molecular-3a","status":"publish","type":"product","link":"https:\/\/cpxzx.com\/pt\/produto\/peneira-molecular-3a\/","title":{"rendered":"Peneira molecular 3A"},"content":{"rendered":"<p><strong>Peneira molecular 3A<\/strong>tamb\u00e9m conhecido como peneira molecular \u00e0 base de pot\u00e1ssio, \u00e9 um adsorvente cristalino de aluminossilicato de metal alcalino com microporos uniformes de aproximadamente 3 angstroms (0,3 nm).<br \/>\n\u00c9 produzido atrav\u00e9s da troca parcial dos i\u00f5es de s\u00f3dio do crivo molecular 4A por i\u00f5es de pot\u00e1ssio. Devido \u00e0 sua distribui\u00e7\u00e3o precisa do tamanho dos poros, o crivo molecular 3A adsorve seletivamente mol\u00e9culas<br \/>\nmais pequenas do que 3 \u00c5 (nomeadamente a \u00e1gua), excluindo as mol\u00e9culas maiores. Esta desidrata\u00e7\u00e3o selectiva torna-o ideal para aplica\u00e7\u00f5es de secagem em que a \u00e1gua deve ser removida sem adsorver<br \/>\nhidrocarbonetos ou mol\u00e9culas org\u00e2nicas maiores.<\/p>\n<h2>Carater\u00edsticas<\/h2>\n<ul>\n<li>Tamanho do poro de aproximadamente 3 \u00c5, seletivo apenas para mol\u00e9culas de \u00e1gua.<\/li>\n<li>Elevada capacidade de adsor\u00e7\u00e3o e cin\u00e9tica de adsor\u00e7\u00e3o r\u00e1pida.<\/li>\n<li>Excelente capacidade de regenera\u00e7\u00e3o com baixos requisitos de energia.<\/li>\n<li>Boa estabilidade qu\u00edmica e t\u00e9rmica.<\/li>\n<li>A elevada seletividade evita a co-adsor\u00e7\u00e3o de hidrocarbonetos e mol\u00e9culas maiores.<\/li>\n<\/ul>\n<h2>Especifica\u00e7\u00f5es (propriedades t\u00edpicas)<\/h2>\n<table class=\"spec-table\" border=\"1\" cellspacing=\"0\" cellpadding=\"6\">\n<thead>\n<tr>\n<th>Im\u00f3veis<\/th>\n<th>Valor t\u00edpico<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Di\u00e2metro dos poros<\/td>\n<td>3 \u00c5<\/td>\n<\/tr>\n<tr>\n<td>R\u00e1cio SiO\u2082\/Al\u2082O\u2083<\/td>\n<td>\u2248 2.0<\/td>\n<\/tr>\n<tr>\n<td>Densidade aparente<\/td>\n<td>0,60 - 0,68 g\/mL<\/td>\n<\/tr>\n<tr>\n<td>Resist\u00eancia ao esmagamento<\/td>\n<td>\u2265 80 N\/pe\u00e7a (para 1,6-2,5 mm)<\/td>\n<\/tr>\n<tr>\n<td>Perda na igni\u00e7\u00e3o<\/td>\n<td>\u2264 1.5%<\/td>\n<\/tr>\n<tr>\n<td>Adsor\u00e7\u00e3o est\u00e1tica de \u00e1gua<\/td>\n<td>\u2265 20% (25\u00b0C, RH 75%)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Vantagens<\/h2>\n<ul>\n<li>A adsor\u00e7\u00e3o altamente selectiva da \u00e1gua garante uma desidrata\u00e7\u00e3o eficaz.<\/li>\n<li>Evita a polimeriza\u00e7\u00e3o ou a degrada\u00e7\u00e3o dos hidrocarbonetos insaturados durante a secagem.<\/li>\n<li>Longa vida \u00fatil com muitos ciclos de regenera\u00e7\u00e3o.<\/li>\n<li>Ampla aplicabilidade nas ind\u00fastrias petroqu\u00edmica, de processamento de g\u00e1s e de qu\u00edmica fina.<\/li>\n<li>Dessecante econ\u00f3mico em compara\u00e7\u00e3o com muitos agentes de secagem alternativos.<\/li>\n<\/ul>\n<h2>Aplica\u00e7\u00f5es<\/h2>\n<ul>\n<li>Secagem de hidrocarbonetos insaturados como o etileno, o propileno e o butadieno.<\/li>\n<li>Desidrata\u00e7\u00e3o de solventes polares, incluindo metanol e etanol.<\/li>\n<li>Desidrata\u00e7\u00e3o de g\u00e1s natural e de g\u00e1s de refinaria.<\/li>\n<li>Secagem de refrigerantes (por exemplo, R22, R134a).<\/li>\n<li>Etapas de desidrata\u00e7\u00e3o no fabrico de produtos farmac\u00eauticos e de qu\u00edmica fina.<\/li>\n<\/ul>\n<h2>Embalagem<\/h2>\n<ul>\n<li>25 kg saco selado \/ caixa de cart\u00e3o<\/li>\n<li>Tambor de ferro de 150 kg<\/li>\n<li>Saco jumbo de 500-1000 kg (FIBC)<\/li>\n<li>Embalagem personalizada dispon\u00edvel mediante pedido<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>As peneiras moleculares 3A apresentam uma elevada capacidade de adsor\u00e7\u00e3o, uma taxa de adsor\u00e7\u00e3o r\u00e1pida e um excelente desempenho de regenera\u00e7\u00e3o. Podem ser regeneradas repetidamente por aquecimento ou purga com g\u00e1s seco, garantindo efici\u00eancia a longo prazo e economia de custos em aplica\u00e7\u00f5es industriais.<\/p>","protected":false},"featured_media":3095,"parent":0,"template":"","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"pcategory":[28],"ptag":[],"class_list":["post-3008","product","type-product","status-publish","has-post-thumbnail","hentry","pcategory-molecular-sieves"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>3A Molecular Sieve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cpxzx.com\/pt\/produto\/peneira-molecular-3a\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"3A Molecular Sieve\" \/>\n<meta property=\"og:description\" content=\"3A molecular sieves feature high adsorption capacity, fast adsorption rate, and excellent regeneration performance. 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