Nanoparticle Approaches to Zeolitic Catalysts

沸石催化剂的纳米颗粒方法

• 批准号: EP/L014475/1
• 负责人: Russell Morris
• 金额: $ 22.78万
• 依托单位: University of St Andrews
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FL014475%2F1
• 关键词: Nanoparticle; Approaches; Zeolitic; Catalysts

Zeolites (porous aluminosilicates) are some of the most important industrial catalysts. There is worldwide recognition of the importance of manipulating zeolites to give improved functionality. The journal Science (2011, 334, 1629) rated this area of current research as one of the 10 most important. This proposal looks to completely change the way we think about the preparation of zeolite catalysts. This will be done through a completely new approach of taking a known zeolite of specific structure and chemistry, and selectively diassembling the solid into precisely defined nanoparticles which can then be reassembled into new materials. The key concept is that certain substituents in zeolites (particularly Ge) are naturally located in specific areas of the structure and are also hydrolytically unstable compared to Al/Si. This means that we can put Ge into only certain places in a zeolite, and then dissolve it out again to diassemble the zeolite into nanostructured particles. The key to the reassembly is that the nanoparticles have originated from a fully condensed zeolite, which means they are geometrically compatible with reassembly - this is not true for directly synthesised nanoparticles. This is a transformative approach to making zeolites because it offers an entirely new mechanism, will produce novel structures and will change the thinking in how zeolites can be made. The chemistry of the disassembly means that one cannot reassemble into the original structure - you will be guaranteed a different one. We also propose that these structures should be predictable - the goal of a designer zeolite for applications is one of the holy grails of the field.

沸石(多孔铝硅酸盐)是一些最重要的工业催化剂。全世界都认识到操纵沸石以提高官能化的重要性。《科学》杂志(2011,334,1629)将当前研究的这一领域列为十大最重要的领域之一。这一提议有望彻底改变我们对沸石催化剂制备的看法。这将通过一种全新的方法来实现，即取一种具有特定结构和化学结构的已知沸石，并选择性地将固体分解成精确定义的纳米颗粒，然后再重新组装成新材料。关键的概念是沸石中的某些取代基(特别是Ge)天然地位于结构的特定区域，并且与Al/Si相比在水解性方面也是不稳定的。这意味着我们只能将Ge放入沸石中的特定位置，然后再次将其溶解，将沸石分解为纳米结构的颗粒。重组的关键是，纳米颗粒来自完全浓缩的沸石，这意味着它们在几何上与重组兼容--对于直接合成的纳米颗粒则不是这样。这是一种制造沸石的变革性方法，因为它提供了一种全新的机制，将产生新的结构，并将改变如何制造沸石的思维。拆卸的化学反应意味着一个人不能重新组装成原来的结构--你肯定会得到一个不同的结构。我们还建议这些结构应该是可预测的--用于应用的设计型沸石的目标是该领域的圣杯之一。

项目成果

Pressure-induced chemistry for the 2D to 3D transformation of zeolites

• DOI: 10.1039/c7ta09248b
• 发表时间: 2018-03
• 期刊: Journal of Materials Chemistry
• 作者: M. Mazur;Á. Arévalo-López;P. Wheatley;Giulia P. M. Bignami;S. Ashbrook;Á. Morales‐García;P. Nachtigall;J. Attfield;J. Čejka;R. Morris

Synthesis, Isotopic Enrichment, and Solid-State NMR Characterization of Zeolites Derived from the Assembly, Disassembly, Organization, Reassembly Process.

• DOI: 10.1021/jacs.7b00386
• 发表时间: 2017-04-12
• 期刊: Journal of the American Chemical Society
• 影响因子: 15
• 作者: Bignami GPM;Dawson DM;Seymour VR;Wheatley PS;Morris RE;Ashbrook SE
• 通讯作者: Ashbrook SE

Germanosilicate Precursors of ADORable Zeolites Obtained by Disassembly of ITH, ITR, and IWR Zeolites

• DOI: 10.1021/cm502953s
• 发表时间: 2014-10-14
• 期刊: CHEMISTRY OF MATERIALS
• 影响因子: 8.6
• 作者: Shamzhy, Mariya;Opanasenko, Maksym;Cejka, Jiri
• 通讯作者: Cejka, Jiri

Post-synthesis incorporation of Al into germanosilicate ITH zeolites: the influence of treatment conditions on the acidic properties and catalytic behavior in tetrahydropyranylation

• DOI: 10.1039/c4cy01594k
• 发表时间: 2015-04
• 期刊: Catalysis Science & Technology
• 影响因子: 5
• 作者: M. Shamzhy;M. Opanasenko;F. Ramos;L. Brabec;M. Horáček;Marta Navarro-Rojas;R. Morris;H. O. Pastore;J. Čejka

Synthesis of Zeolites Using the ADOR (Assembly-Disassembly-Organization-Reassembly) Route

使用 ADOR（组装-分解-组织-重组）路线合成沸石

• DOI: 10.3791/53463-v
• 发表时间: 2016
• 期刊: Journal of Visualized Experiments
• 作者: Morris R