Open AccessSelf-standing zeolite foam monoliths with hierarchical micro–meso–macroporous structures
Author(s) -
Jiawei Chen,
Fangfang Liu,
Yongfeng Li,
Yongshen Dou,
Sanmao Liu,
Liangjun Xiao
Publication year - 2020
Publication title -
royal society open science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 51
ISSN - 2054-5703
DOI - 10.1098/rsos.200981
Subject(s) - zeolite , materials science , monolith , mesoporous material , polyurethane , porosity , chemical engineering , macropore , hydrothermal circulation , catalysis , polymer , crystallite , adsorption , volume (thermodynamics) , composite material , nanotechnology , chemistry , organic chemistry , physics , quantum mechanics , engineering , metallurgy
The zeolite monoliths were synthesized by a facile polymer scaffold template assisted hydrothermal method. The selected foam-shaped template of a polyurethane (PU) foam monolith, was used to prepare the self-standing zeolite foam (ZF) monolithic materials. The obtained ZF products can preserve the same size, shape and macroporous network structure of the original PU foam scaffold template, although the zeolite nano-crystallites had been fully substituted for the PU template to form the new skeleton struts and walls. The as-synthesized ZF products demonstrated abundant hierarchical porosity (involving triple micro-, meso- and macropores). Meanwhile, compared with the conventional zeolite powders, the self-standing ZF monolithic materials exhibited greater total pore volume and nearly three times higher mesopore volume, suggesting wider applications as catalysts, catalyst supports and adsorbents in industry.