Jump to main content
Jump to site search

Issue 3, 2019
Previous Article Next Article

Conversion of magadiite to pure-silica-Nu-1 and an insight into the changes in its medium-range structure during crystallization

Author affiliations

Abstract

Pure-silica-Nu-1 has been synthesized by a magadiite conversion method with the reactive gel composition SiO2 : 0.2 TMAOH : 5 H2O at 170 °C for 7 h. Its crystallization behaviors and the changes in its medium-range structure were discussed. The results demonstrate that part of the structure of magadiite decomposed. However, the 5-membered rings and 6-membered rings in magadiite were retained as SBUs in the system and participated in the formation of zeolite Nu-1, which accelerated the conversion. 4-Membered rings were present in the product after heating for 1 h, proving the formation of pure-silica-Nu-1. The conditions of the silicate species both in the solid product and in solution were investigated. Based on the results obtained from 13C NMR spectroscopy and TG/DTA, the state and amount of TMA+ in the solid product were examined. In addition, the influences of temperature, alkalinity and amount of TMA+ in the starting gels were studied.

Graphical abstract: Conversion of magadiite to pure-silica-Nu-1 and an insight into the changes in its medium-range structure during crystallization

Back to tab navigation

Publication details

The article was received on 18 Nov 2018, accepted on 07 Feb 2019 and first published on 09 Feb 2019


Article type: Research Article
DOI: 10.1039/C8QI01250D
Citation: Inorg. Chem. Front., 2019,6, 837-847

  •   Request permissions

    Conversion of magadiite to pure-silica-Nu-1 and an insight into the changes in its medium-range structure during crystallization

    T. Lv, Y. Wang, S. Zhang, Z. Feng, J. Zheng, J. Yang, X. Liu, X. Liu and C. Meng, Inorg. Chem. Front., 2019, 6, 837
    DOI: 10.1039/C8QI01250D

Search articles by author

Spotlight

Advertisements