Open AccessNanocrystalline mesoporous zeolite X with a considerable external surface area prepared via an ordered precursor: a potential adsorbent
Author(s) -
Wang Xu,
Yang Bin,
Ma Jinghong,
Fen Chunfeng,
Li Ruifeng
Publication year - 2016
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0325
Subject(s) - zeolite , nanocrystalline material , mesoporous material , adsorption , materials science , chemical engineering , nanotechnology , chemistry , organic chemistry , catalysis , engineering
A nanocrystal zeolite X with intracrystalline mesopores has been successfully prepared by using organofunctionalised mesoporous silica in hydrothermal system. The as‐prepared zeolitic material persist the inherent framework structure of FAU zeolite, and present a crystallographic morphology of stacked three‐dimensional intergrowths made up of rectangular nanocrystals. The intracrystalline mesopores are formed via a bond‐blocking principle with hydrophobic carbon chains of organosilane inhibiting the growth of zeolite units and crystals in the channels of mesoporous silica during hydrothermal synthesis. The results showed that the zeolitic material has a considerable external surface area (247 m 2 g −1 )and mesopore volume (0.44 cm 3 g −1 ), maintaining high Brunauer–Emmett–Teller surface area (991 m 2 g −1 ) and large total pore volume (0.71 cm 3 g −1 ), and clearly stating a larger adsorption capacity for p‐xylene at relative higher pressure.