Hierarchically ordered crystalline microporous materials with long-range mesoporous order having cubic symmetry
AssigneesSaudi Arabian Oil Company, King Abdullah University of Science and Technology
InventorsRajesh Kumar Parsapur, Robert Peter Hodgkins, Omer Refa Koseoglu, Kuo-Wei Huang, Anissa Bendjeriou Sedjerari
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Abstract
A composition of matter is provided comprising hierarchically ordered crystalline microporous material having well-defined long-range mesoporous ordering of cubic symmetry. The composition possesses mesopores having walls of crystalline microporous material and a mass of mesostructure between mesopores of crystalline microporous material. Long-range ordering is defined by presence of secondary peaks in an X-ray diffraction (XRD) pattern and/or cubic symmetry observable by microscopy.
Claims20
A composition of matter comprising hierarchically ordered crystalline microporous material having well-defined long-range mesoporous ordering of cubic symmetry comprising mesopores having walls of crystalline microporous material and a mass of mesostructure between mesopores of crystalline microporous material, wherein at least a portion of the mesopores contain micelles of supramolecular templates shaped to induce mesoporous ordering of cubic symmetry, and wherein the supramolecular templates possess one or more dimensions larger than dimensions of micropores of the crystalline microporous material to constrain diffusion into micropores of the crystalline microporous material, wherein the dimensions relate to a head group of a supramolecular template that constrains diffusion into micropores of the crystalline microporous material,
- wherein the supramolecular template is characterized by a surfactant packing parameter g in the range of about 0.4-0.8, wherein
- g=V/a0l
- wherein
- V=total volume of surfactant tails of the supramolecular template,
- a0=area of the head group of the supramolecular template, and
- l=length of surfactant tail of the supramolecular template.
Dependencies are inferred from the claim text.