Microporous Carbon and Mesoporous Silica by Use of Twin Polymerization: An Integrated Experimental and Theoretical Approach to Precursor Reactivity
作者:Philipp Kitschke、Alexander A. Auer、Tina Löschner、Andreas Seifert、Stefan Spange、Tobias Rüffer、Heinrich Lang、Michael Mehring
DOI:10.1002/cplu.201402029
日期:2014.7
in situ differential scanning calorimetry with regard to twinpolymerization (TP). Both, thermally induced and proton‐assisted TP gave nanostructured hybrid materials composed of a phenolic resin and silica. Carbonization and subsequent treatment with HF(aq) resulted in microporouscarbon, whereas oxidation in air provided mesoporoussilica. DFT calculations were performed to obtain a more detailed
A molecular engineering approach to pore-adjustable nanoporous carbons with narrow distribution for high-performance supercapacitors
作者:Sheng Lei、Yun Lu、Xiaofang Zhang、Pengyuan Gao、Xun Cui、Yingkui Yang
DOI:10.1039/c8cc10186h
日期:——
The space-confined twin-polymerization of silanes induces large-micropores and/or small-mesopores into porous carbons with large specific capacitance and high rate capability.
It is possible to form two different, interpenetrating polymer structures—silicon dioxide and a phenolic resin—simultaneously in a single step without the formation of by‐products by using a readily polymerizable, organic silicon spiro compound. This new polymerization process enables the fabrication of materials with domain sizes of 0.5 to 3 nm.
The invention relates to spiro compounds of the formula (I) and to monolithic materials prepared therefrom by twin ring-opening polymerisation which consist of a porous metal oxide or semimetal oxide framework and are suitable for use as catalyst supports or as supports for active compounds.
Process for producing a particulate nanocomposite material
申请人:Nozari Samira
公开号:US08680203B2
公开(公告)日:2014-03-25
The present invention relates to a process for producing a particulate nanocomposite material, in which the particles of the nanocomposite material comprise
a) at least one inorganic or organo(semi)metallic phase which comprises at least one (semi)metal M; and
b) at least one organic polymer phase.
The invention also relates to the nanocomposite materials obtainable by this process.
The process comprises the polymerization of at least one monomer MM which has
at least one first cationically polymerizable monomer unit A which has a metal or semimetal M, and
at least one second cationically polymerizable organic monomer unit B which is joined to the polymerizable unit A via at least one, e.g. 1, 2, 3, or 4, covalent chemical bond,
under cationic polymerization conditions under which both the polymerizable monomer unit A and the polymerizable unit B polymerize with breakage of the bond or bonds between A and B,
wherein the polymerization is performed in an aprotic solvent in which the nanocomposite material is insoluble, in the presence of at least one polymerization initiator and of at least one further substance selected from
α) at least one surface-active substance and
β) at least one particulate material.