- Title
- Novel hierarchical core-shell BEA@NanoZSM-5 zeolite for improved cracking performance for 1,3,5-triisopropylbenzene and n-hexadecane
- Creator
- Mensah, Jim; Yan, Penghui; Kennedy, Eric; Drewery, Matthew; Stockenhuber, Michael
- Relation
- Microporous and Mesoporous Materials Vol. 328, Issue December 2021, no. 111399
- Publisher Link
- http://dx.doi.org/10.1016/j.micromeso.2021.111399
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2021
- Description
- To overcome diffusional limitations associated with the catalytic cracking of large hydrocarbons, a novel core-shell hierarchical zeolite has been developed and evaluated. Large, branched hydrocarbons encounter diffusional limitations in micropores of zeolites for cracking reactions, a limitation overcome by improved textural properties of hierarchical zeolites, leading to enhanced cracking activity. This will result in an improvement in deactivation rate, cracking activity, and enhanced product selectivity towards light hydrocarbon products. The impact of chain length involving a long chain paraffin (hexadecane) and a highly branched aromatic (1,3,5-TIPB) was also investigated to study the influence of the presence of the micro-mesopore network in overcoming diffusion limitations. This paper investigates the use of hierarchical core-shell BEA@NanoZSM-5 in the catalytic cracking of 1,3,5 triisopropylbenzene (1,3,5-TIPB), and n-hexadecane (C16). The novel hierarchical composite was synthesized by preliminary seeding of the core BEA crystals and subsequent growth under hydrothermal conditions leading to the formation of an intergrown and distinctive nanocrystalline ZSM-5 shell zeolite. Evidence of the existence of a hierarchical structure was probed by Ar sorption utilising non-local density functional theory (NLDFT) pore size distribution analysis.
- Subject
- zeolite; core-shell structure; 1,3,5-triisopropylbenzene; n-hexadecane; cracking
- Identifier
- http://hdl.handle.net/1959.13/1450609
- Identifier
- uon:43978
- Identifier
- ISSN:1387-1811
- Language
- eng
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