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One-pot synthesis of MWW zeolite nanosheets using a rationally designed organic structure-directing agent.

ABSTRACT: A new material MIT-1 comprised of delaminated MWW zeolite nanosheets is synthesized in one-pot using a rationally designed organic structure-directing agent (OSDA). The OSDA is comprised of a hydrophilic head segment that resembles the OSDA used to synthesize the zeolite precursor MCM22(P), a hydrophobic tail segment that resembles the swelling agent used to swell MCM22(P), and a di-quaternary ammonium linker that connects both segments. MIT-1 features high crystallinity and surface areas exceeding 500 m²g^-1, and can be synthesized over a wide synthesis window that includes Si/Al ratios ranging from 13 to 67. Characterization data reveal high mesoporosity and acid strength with no detectable amorphous silica phases. Compared to MCM-22 and MCM-56, MIT-1 shows a three-fold increase in catalytic activity for the Friedel-Crafts alkylation of benzene with benzyl alcohol.

SUBMITTER: Luo HY

PROVIDER: S-EPMC4603534 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature

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One-pot synthesis of MWW zeolite nanosheets using a rationally designed organic structure-directing agent.

Luo Helen Y HY Michaelis Vladimir K VK Hodges Sydney S Griffin Robert G RG Román-Leshkov Yuriy Y

Chemical science 20150722 11

A new material MIT-1 comprised of delaminated MWW zeolite nanosheets is synthesized in one-pot using a rationally designed organic structure-directing agent (OSDA). The OSDA is comprised of a hydrophilic head segment that resembles the OSDA used to synthesize the zeolite precursor MCM22(P), a hydrophobic tail segment that resembles the swelling agent used to swell MCM22(P), and a di-quaternary ammonium linker that connects both segments. MIT-1 features high crystallinity and surface areas exceed ...[more]

PMID: 26478803

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