An examination of confinement effects in high-silica zeolites

Article Abstract:

An examination of the environment provided by the zeolite channels in high-silica zeolites, which have the MFI (ZSM-5), CHA (Chabazite), MOR (Mordenite), TON (ZSM-22), MTW (ZSM-12), FER (Ferrierite), and FAU (Faujasite) structures is presented. Result indicates that the heats of adsorption of physically adsorbed species changes due to the size and structure of zeolite cavities.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Zeolites, Structure

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High-pressure stability in ordered mesoporous silicas: rigidity and elasticity through nanometer scale arches

Article Abstract:

Surfactant-templated silicas mesoscopic order can be retained up to 12 GPa and pressure-induced distortions are reversible. The combination of lightweight, low-temperature and high-temperature stability, andoxidative stability indicates that ordered inorganic/organic composites and porous inorganics could provide a viable alternative to disordered sol-gel based materials.

Basic Chemical Manufacturing, Industrial Organic Chemicals, Organic Chemicals, Organic compounds

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Comparative analysis of structural and morphological properties of large-pore periodic mesoporous organosilicas and pure silicas

Article Abstract:

A systematic study on the structural properties and external morphologies of large-pore mesoporous organosilicas synthesized using triblock copolymer EO20PO70EO20 as a template under low acid conditions is carried out. The results reveal that the structural and morphological properties of mesoporous organosilicas are highly acid-sensitive.

Chemical properties, Silicon dioxide, Copolymers

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