Mg2+-derived mesoporous ultra-high silica twelve-membered-ring basic zeolites: straightforward synthesis and catalytic performanceElectronic supplementary information (ESI) available: Fig. S1-S5. See DOI: 10.1039/c5ce02075a
Mg 2+ -derived mesoporous ultra-high silica twelve-membered-ring zeolites with multiple topologies (MOR, BEA and MTW) were straightforwardly synthesized by a one-pot route, where the crucial step was the co-hydrolysis/condensation of silica source and magnesium salt under moderate acidic conditions....
Saved in:
Main Authors | , , , , |
---|---|
Format | Journal Article |
Published |
09.02.2016
|
Online Access | Get full text |
Cover
Loading…
Summary: | Mg
2+
-derived mesoporous ultra-high silica twelve-membered-ring zeolites with multiple topologies (MOR, BEA and MTW) were straightforwardly synthesized by a one-pot route, where the crucial step was the co-hydrolysis/condensation of silica source and magnesium salt under moderate acidic conditions. SiO
2
/Al
2
O
3
ratios can be adjusted from ∼30 to as high as 410, thus generating superior basicity that was further improved by the incorporation of Mg species. A mesoporous structure was self-formed without the assistance of any template or special strategy. Catalysis tests showed high activity of these zeolites in a typical base reaction, Knoevenagel condensation, even for the bulky substrates due to the enhanced mass transfer arising from the mesopores. This methodology provides a promising approach towards target synthesis of valuable Mg
2+
-derived mesoporous ultra-high silica zeolites with tunable acid/base properties, which can even act as an efficient mesoporous zeolitic solid base.
Mg
2+
-derived ultra-high silica mesoporous zeolites are synthesized by acidic pre-co-hydrolysis/condensation and act as an efficient zeolitic solid base in Knoevenagel condensations. |
---|---|
Bibliography: | 10.1039/c5ce02075a Electronic supplementary information (ESI) available: Fig. S1-S5. See DOI |
ISSN: | 1466-8033 |
DOI: | 10.1039/c5ce02075a |