𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Sulfonic acid-functionalized periodic mesoporous organosilica

✍ Scribed by S Hamoudi; S Kaliaguine

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
537 KB
Volume
59
Category
Article
ISSN
1387-1811

No coin nor oath required. For personal study only.

✦ Synopsis

A series of periodic mesoporous organosilicas (PMOs) containing different amounts of sulfonic acid bearing groups were synthesized using bis(trimethoxysilyl)ethane (BTME) and mercaptopropyltrimethoxysilane (MPTMS) as framework precursors under basic conditions in the presence of cetyltrimethylammonium chloride (CTAC) surfactant. Conversion of the mercaptopropyl groups into sulfonic acid moieties was achieved via oxidation using hydrogen peroxide. Ordered cubic-like mesostructures with high surface areas (up to 950 m 2 /g) and narrow pore size distributions (up to 3.50 nm) were obtained. The structural ordering was shown to be retained after oxidation. The effect of the amount of mercaptopropylsilane incorporated in the synthesis gels on the structural properties, morphology, thermal behavior as well as the acidity of the synthesized materials was examined.

📜 SIMILAR VOLUMES

Proton Conductivity of SO3H-Functionaliz
Proton Conductivity of SO3H-Functionalized Benzene–Periodic Mesoporous Organosilica
✍ Monir Sharifi; Christof Köhler; Pia Tölle; Thomas Frauenheim; Michael Wark 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 795 KB

## Abstract The proton conductivity of benzene–periodic mesoporous silica (PMO) materials functionalized with sulfonic acid groups is investigated using experimental and theoretical techniques. The SO~3~H functionalization of pristine benzene–PMO is realized by three different pathways based on a g

Hybrid Periodic Mesoporous Organosilicas
Hybrid Periodic Mesoporous Organosilicas
✍ W. Whitnall; T. Asefa; G. A. Ozin 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 403 KB 👁 2 views

## Abstract In this study we report the synthesis of a new class of materials called hybrid periodic mesoporous organosilicas (HPMOs). By coupling a silsesquioxane precursor through at least two chemical linkages to the mesopore walls of a pre‐existing periodic mesoporous silica (PMS) or periodic m