Cation-Controlled Gating for Selective Gas Adsorption over Adaptable Zeolites
适应性沸石上选择性气体吸附的阳离子控制门控
基本信息
- 批准号:EP/N032942/1
- 负责人:
- 金额:$ 48.97万
- 依托单位:
- 依托单位国家:英国
- 项目类别:Research Grant
- 财政年份:2016
- 资助国家:英国
- 起止时间:2016 至 无数据
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Adsorption technology by which gas streams can be purified and separated is essential for many key industries, including those in the oil and gas, chemicals, manufacturing and medical sectors. As a result, solid adsorbents are worth £2.4 billion per year, some 10% of the total industrial gas market. Furthermore, adsorption can offer green, energy-efficient routes to environmental applications, including carbon capture from power generation and other industrial sources. Typically, adsorption is achieved via pressure swing and temperature swing adsorption processes with cycle times of minutes or more. New kinetic-based adsorption technologies, using rotating valves, rotary wheel adsorbers and novel thin layer adsorbent structures can reduce the equipment footprint and increase the efficiency of these processes of gas separation so that, for example, pure gas can be generated on site rather than centrally, with the distribution costs associated with that.Zeolites, microporous aluminosilicates, make up over 30% of industrial adsorbents by value. Their well ordered and robust framework structures impart high selectivity by both molecular sieving and thermodynamics-based separation. Although over 200 zeolitic structure types are known, only a very few find widespread application as adsorbents, in part due to the economics of their synthesis. In our recent EPSRC-funded research, we have indentified two new mechanisms by which very high adsorption selectivity can be achieved. The first mechanism is via a chemoselective 'trapdoor' effect, in which cations occupying window sites only permit diffusion of molecules (such as CO2) that interact strongly with them. The second mechanism makes use of the flexibility of some structures in response to the composition of their extra-framework cations, so that their structure and cation composition can be modified to fine-tune molecular sieving via 'cation-controlled molecular sieving'.In this ambitious project we will develop gas separation by these two mechanism by zeolites not commonly used as adsorbents, including some recently reported by us as CO2 adsorbents in 'Nature'. Their potential advantages of new zeolites in kinetic-based separations (including a requirement for an order of magnitude less material) can enable much higher specific production costs to be tolerated. Consequently, the number of potential zeolite candidates for adsorption is increased. To develop these new materials and make possible this step change in adsorbent technology, we have assembled a research team comprising materials chemists, computational modellers and chemical engineers as well as industrial partners in zeolite adsorption and gas adsorption. Materials chemistry will be used to modify and optimise the chemical structure of chosen zeolite frameworks and also their texture (particle size, hierarchical porosity) for target gas separations, and the performance of these new compositions will be measured and modelled macroscopically by chemical engineers. Multiscale computational modelling (via a range of techniques of different levels of theory) will give a detailed picture of the mechanisms and so provide feedback to inform the experimental studies. This will result in greater understanding of the relationship of chemical structure and dynamics to the adsorption properties. In concert with this, ongoing discussion with industrial project partners at project meetings will enable the practical development and exploitation of a new generation of zeolite-based adsorbents for industrial and environmental applications.
吸附技术可以净化和分离气流,对许多关键行业至关重要,包括石油和天然气、化工、制造和医疗行业。因此,固体吸附剂每年价值24亿英镑,约占整个工业气体市场的10%。此外,吸附可以为环境应用提供绿色、节能的途径,包括从发电和其他工业来源捕获碳。通常,吸附是通过变压和变温吸附过程实现的,循环时间为几分钟或更长。采用旋转阀、旋转轮吸附剂和新型薄层吸附剂结构的新型动力学吸附技术可以减少设备占地面积,提高这些气体分离过程的效率,例如,纯气体可以在现场产生,而不是集中产生,并降低与之相关的配送成本。沸石,微孔铝硅酸盐,占工业吸附剂价值的30%以上。它们良好的有序和坚固的框架结构赋予了分子筛分和基于热力学的分离的高选择性。虽然已知的沸石结构类型超过200种,但只有极少数被广泛应用于吸附剂,部分原因是它们的合成经济。在我们最近的epsrc资助的研究中,我们已经确定了两种新的机制,通过它们可以实现非常高的吸附选择性。第一种机制是通过化学选择性“活板门”效应,其中占据窗口位置的阳离子只允许与它们强烈相互作用的分子(如二氧化碳)扩散。第二种机制利用一些结构的灵活性来响应其框架外阳离子的组成,因此它们的结构和阳离子组成可以通过“阳离子控制的分子筛分”来调整分子筛分。在这个雄心勃勃的项目中,我们将开发这两种机制的气体分离,沸石不常用作吸附剂,包括我们最近在《自然》杂志上报道的一些二氧化碳吸附剂。新型沸石在动力学分离中的潜在优势(包括对材料的要求少一个数量级)可以承受更高的特定生产成本。因此,潜在的候选吸附沸石的数量增加。为了开发这些新材料并使吸附剂技术的这一步骤改变成为可能,我们组建了一个由材料化学家,计算建模师和化学工程师以及沸石吸附和气体吸附的工业合作伙伴组成的研究团队。材料化学将用于修改和优化所选沸石框架的化学结构,以及它们的结构(粒度、分层孔隙度),用于目标气体分离,化学工程师将对这些新组合物的性能进行测量和宏观建模。多尺度计算模型(通过一系列不同理论水平的技术)将给出机制的详细图像,从而为实验研究提供反馈。这将有助于更好地理解化学结构和动力学与吸附性能的关系。与此同时,在项目会议上与工业项目伙伴进行的持续讨论将使新一代基于沸石的吸附剂的实际开发和利用能够用于工业和环境应用。
项目成果
期刊论文数量(5)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Structural Chemistry, Flexibility, and CO 2 Adsorption Performance of Alkali Metal Forms of Merlinoite with a Framework Si/Al Ratio of 4.2
骨架Si/Al比为4.2的碱金属形式的橄榄石的结构化学、柔韧性和CO 2 吸附性能
- DOI:10.1021/acs.jpcc.1c08296
- 发表时间:2021
- 期刊:
- 影响因子:0
- 作者:Bruce E
- 通讯作者:Bruce E
Understanding CO2 adsorption in a flexible zeolite through a combination of structural, kinetic and modelling techniques
- DOI:10.1016/j.seppur.2020.117846
- 发表时间:2021-02-01
- 期刊:
- 影响因子:8.6
- 作者:Verbraeken, Maarten C.;Mennitto, Roberto;Brandani, Stefano
- 通讯作者:Brandani, Stefano
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Paul Wright其他文献
DIMENSIONAL CHARACTERISTICS OF THE NONWANDERING SETS OF OPEN BILLIARDS
- DOI:
10.1017/s0004972715000817 - 发表时间:
2015-08 - 期刊:
- 影响因子:0.7
- 作者:
Paul Wright - 通讯作者:
Paul Wright
Development of a Novel Yeast Cell-Based System for Studying the Aggregation of Alzheimer’s Disease-Associated Aβ Peptides in vivo
开发一种新型酵母细胞系统,用于研究阿尔茨海默病相关 Aβ 肽在体内的聚集
- DOI:
10.1159/000101838 - 发表时间:
2007 - 期刊:
- 影响因子:3
- 作者:
T. von der Haar;L. Jossé;Paul Wright;J. Zenthon;M. Tuite - 通讯作者:
M. Tuite
The Diffusion Coefficient For Piecewise Expanding Maps Of The Interval With Metastable States
亚稳态区间分段展开图的扩散系数
- DOI:
10.1142/s0219493712003547 - 发表时间:
2010 - 期刊:
- 影响因子:0
- 作者:
D. Dolgopyat;Paul Wright - 通讯作者:
Paul Wright
Mapping a multidimensional emotion in response to television commercials
映射对电视广告的多维情感响应
- DOI:
- 发表时间:
2009 - 期刊:
- 影响因子:4.8
- 作者:
Jon D. Morris;Nelson J. Klahr;F. Shen;J. Villegas;Paul Wright;Guojun He;Yijun Liu - 通讯作者:
Yijun Liu
Entropy, Lyapunov exponents and escape rates in open systems
开放系统中的熵、李亚普诺夫指数和逃逸率
- DOI:
- 发表时间:
2011 - 期刊:
- 影响因子:0.9
- 作者:
Mark F. Demers;Paul Wright;L. Young - 通讯作者:
L. Young
Paul Wright的其他文献
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{{ truncateString('Paul Wright', 18)}}的其他基金
Designed Synthesis of Zeolites for Environmental and Biorenewables Catalysis
用于环境和生物可再生能源催化的沸石设计合成
- 批准号:
EP/S016201/1 - 财政年份:2019
- 资助金额:
$ 48.97万 - 项目类别:
Research Grant
I-Corps: Barcode Blotting Diagnostic Technology for Point-of-Care Testing
I-Corps:用于即时测试的条码印迹诊断技术
- 批准号:
1403368 - 财政年份:2014
- 资助金额:
$ 48.97万 - 项目类别:
Standard Grant
EAGER: Fabrication and Brokering through Information Technology (FABBIT)
EAGER:通过信息技术进行制造和经纪 (FABBIT)
- 批准号:
1154235 - 财政年份:2011
- 资助金额:
$ 48.97万 - 项目类别:
Standard Grant
Optimising nanoporous adsorbents for hydrogen purification: development of a chemistry/chemical engineering skills base
优化氢气纯化的纳米多孔吸附剂:化学/化学工程技能基础的开发
- 批准号:
EP/F008384/1 - 财政年份:2008
- 资助金额:
$ 48.97万 - 项目类别:
Research Grant
Agent-Based Precision Manufacturing Systems
基于代理的精密制造系统
- 批准号:
9908174 - 财政年份:1999
- 资助金额:
$ 48.97万 - 项目类别:
Standard Grant
CyberCut: A Networked Manufacturing Service
CyberCut:网络化制造服务
- 批准号:
9617995 - 财政年份:1997
- 资助金额:
$ 48.97万 - 项目类别:
Continuing Grant
Engineering Research Deployment Teaching Initiative: Networked CAD/CAM: Integrating the Classrooms, Design Laboratories and University Machine-Shops
工程研究部署教学计划:网络化 CAD/CAM:整合教室、设计实验室和大学机械车间
- 批准号:
9309925 - 财政年份:1993
- 资助金额:
$ 48.97万 - 项目类别:
Standard Grant
Principles for Integrating Part Setup Planning and Workholding in Automated Manufacturing
自动化制造中集成零件设置规划和工件夹持的原则
- 批准号:
9396193 - 财政年份:1993
- 资助金额:
$ 48.97万 - 项目类别:
Continuing Grant
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