Open AccessHierarchical SAPO‐34 Architectures with Tailored Acid Sites using Sustainable Sugar Templates
Author(s) -
Miletto Ivana,
Ivaldi Chiara,
Paul Geo,
Chapman Stephanie,
Marchese Leonardo,
Raja Robert,
Gianotti Enrica
Publication year - 2018
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.201800001
Subject(s) - microporous material , template , beckmann rearrangement , monosaccharide , mesoporous material , sucrose , chemistry , fructose , magic angle spinning , sugar , chemical engineering , catalysis , yield (engineering) , molecular sieve , materials science , organic chemistry , nanotechnology , nuclear magnetic resonance spectroscopy , engineering , metallurgy
In a distinct, bottom‐up synthetic methodology, monosaccharides (fructose and glucose) and disaccharides (sucrose) have been used as mesoporogens to template hierarchical SAPO‐34 catalysts. Detailed materials characterization, which includes solid‐state magic angle spinning NMR and probe‐based FTIR, reveals that, although the mesopore dimensions are modified by the identity of the sugar template, the desirable acid characteristics of the microporous framework are retained. When the activity of the hierarchical SAPO‐34 catalysts was evaluated in the industrially relevant Beckmann rearrangement, under liquid‐phase conditions, the enhanced mass‐transport properties of sucrose‐templated hierarchical SAPO‐34 were found to deliver a superior yield of ϵ ‐caprolactam.