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With pore sizes in the range of 20–500 Å mesoporous materials are of use for extending zeolite‐type chemistry, which is based on materials with a pore size of around 7 Å, to larger molecules. The pores can be produced by pillaring (the propping of layered materials) or by extending the template method used to produce zeolites. The new, ultra‐large‐pore materials recently presented by researchers from Mobil Oil Research are described and their production and application discussed
Peter Behrens (Mon,) studied this question.