Articles with "directing agent" as a keyword



Generating Beta Zeolite Nanosheets of Intergrown Polymorph B and C Using Polycationic Structure-Directing Agent.

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Published in 2025 at "Small"

DOI: 10.1002/smll.202411639

Abstract: Zeolitic nanosheets possess great potential in catalysis due to their enhanced transport property and accessibility toward bulky molecules compared to conventional micron- meter scale crystals. However, the generation of Beta zeolite nanosheets, which are crucial… read more here.

Keywords: directing agent; beta zeolite; zeolite nanosheets; beta ... See more keywords

Versatile phosphorus-structure-directing agent for direct preparation of novel metallosilicate zeolites with IFW-topology

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Published in 2021 at "Microporous and Mesoporous Materials"

DOI: 10.1016/j.micromeso.2021.111005

Abstract: Abstract To fabricate a novel metallosilicate zeolite with a tridirectional pore system of 8- and 10-ring channels, direct incorporation of B, Al and Ga into small and medium pore ITQ-52 zeolite with the IFW-type topology… read more here.

Keywords: topology; novel metallosilicate; directing agent; structure directing ... See more keywords

One-Step Synthesis of Hierarchical ZSM-5 Using Cetyltrimethylammonium as Mesoporogen and Structure-Directing Agent

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Published in 2017 at "Chemistry of Materials"

DOI: 10.1021/acs.chemmater.7b00913

Abstract: Hierarchical ZSM-5 zeolite is hydrothermally synthesized in a single step with cetyltrimethylammonium (CTA) hydroxide acting as mesoporogen and structure-directing agent. Essential to this synthesis is the replacement of NaOH with KOH. An in-depth solid-state NMR… read more here.

Keywords: hierarchical zsm; mesoporogen structure; structure directing; directing agent ... See more keywords

Divergent Mechanisms of SSZ-39 Crystallization Using Structurally Similar but Chemically Distinct Organic Structure-Directing Agents.

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Published in 2025 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.5c03712

Abstract: The role of an organic structure-directing agent on zeolite crystallization is conventionally interpreted based on the final, bulk crystal structure. However, few studies have examined their effect on the dynamics of zeolite crystal growth and… read more here.

Keywords: crystallization; directing agent; structure; directing agents ... See more keywords

Inversion of chirality in GTM-4 enantio-enriched zeolite driven by a minor change of the structure-directing agent.

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Published in 2022 at "Chemical communications"

DOI: 10.1039/d2cc04958a

Abstract: A surprising inversion of chirality of the -ITV zeolite framework is observed when the ethyl group of the enantiopure N,N-ethyl-methyl-pseudoephedrinium organic structure-directing agent is replaced by a benzyl or 2-methylbenzyl group, keeping the same molecular… read more here.

Keywords: directing agent; structure directing; inversion chirality;

Single-walled zeolitic nanotubes

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Published in 2022 at "Science"

DOI: 10.1126/science.abg3793

Abstract: Description Zeolitic nanotubes Nanotubes generally have solid walls, but a low-dimensional version of zeolites now introduces porosity into such structures. Korde et al. used a structure-directing agent with a hydrophobic biphenyl group center connecting two… read more here.

Keywords: structure; single walled; directing agent; structure directing ... See more keywords