{"id":4071,"date":"2024-02-05T05:57:42","date_gmt":"2024-02-05T05:57:42","guid":{"rendered":"https:\/\/longchangchemical.com\/?post_type=product&p=4071"},"modified":"2026-05-08T03:00:01","modified_gmt":"2026-05-08T03:00:01","slug":"fdca-cas-3238-40-2","status":"publish","type":"product","link":"https:\/\/longchangchemical.com\/nl\/product\/fdca-cas-3238-40-2\/","title":{"rendered":"2,5-Furandicarbonzuur CAS 3238-40-2"},"content":{"rendered":"

2,5-Furandicarbonzuur CAS 3238-40-2<\/strong><\/h2>\n\n\n\n\n\n\n\n\n
Items<\/td>\nSpecificaties<\/td>\n<\/tr>\n
Uiterlijk<\/td>\nWit poeder<\/td>\n<\/tr>\n
Inhoud (HPLC)<\/td>\n\uff1e99.5%<\/td>\n<\/tr>\n
Zware metalen (mg\/kg)<\/td>\n\u22642.0<\/td>\n<\/tr>\n
Verlies bij drogen<\/td>\n\u22640.5%<\/td>\n<\/tr>\n
As<\/td>\n\u22642.0%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2,5-Furandicarboxylzuur Gebruik<\/strong><\/p>\n

1. 5-Hydroxymethylfurfural is een belangrijke platformverbinding voor de oxidatieve derivatisering van 2,5-furandicarbonzuur, dat wordt beschouwd als een hernieuwbaar en groen alternatief voor tereftaalzuur op basis van aardolie. Bovendien is de
\n2. 2,5-Furandicarboxylzuur kan ook worden gebruikt als vervanging voor isoftaalzuur, butaandizuur, bisfenol A, adipinezuur, enz. bij de bereiding van biogebaseerde polymeren zoals polyesters, polyamiden en epoxyharsen.
\n3. Het kan worden gebruikt in biologisch afbreekbare plastic verpakkingen, technische kunststoffen, nylon, enz.<\/p>\n

2,5-Furandicarboxylzuur Pakket<\/strong><\/p>\n

25 kg\/trommel.<\/p>\n

Verzegeld en bewaard in een koele en droge omgeving.<\/p>\n

Neem nu contact met ons op!<\/b><\/strong><\/h2>\n

Als je Price nodig hebt, vul dan je contactgegevens in op het formulier hieronder. We nemen dan meestal binnen 24 uur contact met je op. Je kunt me ook een e-mail sturen info@longchangchemical.com<\/a><\/span> tijdens kantooruren (8:30 tot 18:00 UTC+8 ma. ~ za.) of gebruik de live chat op de website voor een snel antwoord.<\/b><\/strong><\/h4>\n

<\/p>\n

Waarom worden katalysatoren in poedervorm zelden gebruikt in chemische reacties?<\/p>\n

1. Beperking van de massaoverdracht: Poederkatalysatoren hebben meestal een groot oppervlak en een grote pori\u00ebnstructuur, die ontworpen is om de activiteit van katalytische reacties te verhogen. Reactieve moleculen kunnen bij het binnendringen in deze pori\u00ebn echter te maken krijgen met beperkingen van de massaoverdracht, wat resulteert in een beperkte reactiesnelheid. Daarentegen kan het gebruik van katalysatoren met een andere morfologie (bijvoorbeeld korrelig of poreus) de beperkingen van de massaoverdracht verminderen en zo de reactiesnelheid verhogen.<\/p>\n

2, Drukdalingsprobleem: Poederkatalysatoren vormen meestal een dicht opeengepakt bed in de reactor. Tijdens de reactie passeren de reactanten de katalysatorlaag, wat kan leiden tot een grote drukval. Deze drukval verhoogt de werkingskosten van het systeem en kan onderhoud en vervanging van de katalysator vereisen na een lange werkingsperiode.<\/p>\n

3. Dispersie: Poederkatalysatoren zijn slecht gedispergeerd in de reactor door hun korrelige vorm. Slechte dispersie kan leiden tot onderbenutting van sommige katalysatordeeltjes, wat de effici\u00ebntie en productselectiviteit van de reactie be\u00efnvloedt.<\/p>\n

4. Thermisch beheer van de reactie: Sommige katalytische reacties zijn exotherm en het gebruik van poederkatalysatoren kan leiden tot warmteaccumulatie in het katalysatorbed, waardoor het thermisch beheer van de reactie moeilijker wordt. Dit kan leiden tot hotspotvorming en problemen met de reactietemperatuurregeling.<\/p>\n

Niet alle situaties zijn echter ongeschikt voor het gebruik van poederkatalysatoren. Onder sommige specifieke reactieomstandigheden kunnen poederkatalysatoren nog steeds een geschikte keuze zijn. De selectie van de geschikte katalysatorvorm hangt af van het specifieke type reactie, de reactieomstandigheden en de vereisten voor reactiesnelheid, selectiviteit en massaoverdracht. In de praktijk zullen chemische ingenieurs bovenstaande factoren in overweging nemen om de meest geschikte katalysatorvorm te selecteren.<\/p>","protected":false},"excerpt":{"rendered":"

Chemische naam: 2,5-Furandicarboxyliczuur<\/p>\n

CAS-nr.: 3238-40-2<\/p>\n

Moleculaire formule: C6H4O5<\/p>\n

Molecuulgewicht: 156,09<\/p>\n

Moleculaire structuur:\"CAS<\/p>\n

Verschijning: Wit poeder<\/p>\n

Dichtheid: 1,7400<\/p>","protected":false},"featured_media":6720,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[69],"product_tag":[],"class_list":{"0":"post-4071","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-catalysts-chemical-auxiliary-agents","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"\nChina 2,5-Furandicarboxylic acid Manufacturer CAS 3238-40-2 - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"2,5-Furandicarboxylic acid CAS 3238-40-2 is used in industrial processing and formulation applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/nl\/product\/fdca-cas-3238-40-2\/\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"China 2,5-Furandicarboxylic acid Manufacturer CAS 3238-40-2 - 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