A Cationic Oligomer as an Organic Template for Direct Synthesis of Aluminosilicate ITH Zeolite

There are a large number of zeolites, such as ITH, that cannot be prepared in the aluminosilicate form. Now, the successful synthesis of aluminosilicate ITH zeolite using a simple cationic oligomer as an organic template is presented. Key to the success is that the cationic oligomer has a strong com...

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Detalles Bibliográficos
Autores: Lei, C., Dong, Zhuoya, Martínez Sánchez, Cristina, Martínez Triguero, Joaquín, Chen, Wei, Wu, Q., Meng, Xiangju, Parvulescu, Andrei-Nicolae, De Baerdemaeker, Trees, Müller, Ulrich, Zheng, Anmin, Ma, Y., Zhang, Weiping, Yokoi, Toshiyuki, Marler, Bernd, De Vos, D.E., Kolb, Ute, Corma, Avelino, Xiao, F.S.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/228056
Acceso en línea:http://hdl.handle.net/10261/228056
Access Level:acceso abierto
Descripción
Sumario:There are a large number of zeolites, such as ITH, that cannot be prepared in the aluminosilicate form. Now, the successful synthesis of aluminosilicate ITH zeolite using a simple cationic oligomer as an organic template is presented. Key to the success is that the cationic oligomer has a strong complexation ability with aluminum species combined with a structural directing ability for the ITH structure similar to that of the conventional organic template. The aluminosilicate ITH zeolite has very high crystallinity, nanosheet-like crystal morphology, large surface area, fully four-coordinated Al species, and abundant acidic sites. Methanol-to-propylene (MTP) tests reveal that the Al-ITH zeolite shows much higher selectivity for propylene and longer lifetime than commercial ZSM-5. FCC tests show that Al-ITH zeolite is a good candidate as a shape-selective FCC additive for enhancing propylene and butylene selectivity.

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