Formation of new microporous silica phase in protonated kanemite-TMAOH-water system

Autor:	Yoshimichi Kiyozumi, Fathi Kooli, Martine Salou, Fujio Mizukami
Rok vydání:	2002
Předmět:	Materials science Chromatography Sodium aluminate Microporous material Hydrothermal circulation law.invention chemistry.chemical_compound chemistry Chemical engineering law Phase (matter) Sodalite Hydroxide Calcination Thermal stability
DOI:	10.1016/s0167-2991(02)80036-2
Popis:	By hydrothermal transformation of protonated kanemite in teramethylammoniun hydroxide (TMAOH) and water at temperatures above 130°C for 5 days, a new phase was formed and called FLS. Upon calcination up to 1000°C, this phase was transformed to a crystalline microporous silica material with high thermal stability. The calcined phase has a large surface area 335 m2 g−1 and micropore volume of 0.100 mL g−1 at 500°C. The solid state transformation of the as synthesized FLS to TMA-containing sodalite structure in sodium aluminate and TMAOH.5H2O mixture at 150°C for 1h is also reported.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::03499dba35491c18f3e51076a901effb https://doi.org/10.1016/s0167-2991(02)80036-2 Zobrazit plný text záznamu