Functionalization of Delaminated Zeolite ITQ-6 for the Adsorption of Carbon Dioxide

Zukal, Arnošt; Domínguez, Irene; Mayerová, Jana; Čejka, Jiřı́

doi:10.1021/la901156z

Cited by 139 publications

(81 citation statements)

References 47 publications

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“…materials. 24,89 In this regard, MOFs exhibited better possibility in terms of pore size tunability as compared to zeolites and activated carbons, 5 although contrary to what happened with zeolites eight decades ago, there has been no strong incentive so far for scientists and industrialists to put these unique and tunable materials into applications using rational synthesis and design. 18 The tunability of MOFs can be illustrated in the case when pores are deliberately functionalized for the purpose of increasing the affinity of one particular gas vs. another one or when the pore size is narrowed to exclude one molecule vs. another.…”

Section: Discussionmentioning

confidence: 99%

Low concentration CO2 capture using physical adsorbents: Are metal–organic frameworks becoming the new benchmark materials?

Belmabkhout¹,

Guillerm²,

Eddaoudi³

2016

Chemical Engineering Journal

293

168

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KeywordsCO 2 capture, traces CO 2 removal, air capture, physical adsorbents, MOFs AbstractThe capture and separation of traces and concentrated CO 2 from important commodities such as CH 4 , H 2 , O 2 and N 2, is becoming important in many areas related to energy security and environmental sustainability. While trace CO 2 concentration removal applications have been modestly studied for decades, the spike in interest in the capture of concentrated CO 2 was motivated by the need for new energy vectors to replace highly concentrated carbon fuels and the necessity to reduce emissions from fossil fuel-fired power plants. CO 2 capture from various gas streams, at different concentrations, using physical adsorbents, such as activated carbon, zeolites, and metal-organic frameworks (MOFs), is attractive. However, the adsorbents must be designed with consideration of many parameters including CO 2 affinity, kinetics, energetics, stability, capture mechanism, in addition to cost. Here, we perform a systematic analysis regarding the key technical parameters that are required for the best CO 2 capture performance using physical adsorbents. We also experimentally demonstrate a suitable 2 material model of Metal Organic Framework as advanced adsorbents with unprecedented properties for CO 2 capture in a wide range of CO 2 concentration. These recently developed class of MOF adsorbents represent a breakthrough finding in the removal of traces CO 2 using physical adsorption.This platform shows colossal tuning potential for more efficient separation agents.

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Section: Discussionmentioning

confidence: 99%

Low concentration CO2 capture using physical adsorbents: Are metal–organic frameworks becoming the new benchmark materials?

Belmabkhout¹,

Guillerm²,

Eddaoudi³

2016

Chemical Engineering Journal

293

168

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“…On the contrary, aminegrafting on zeolites resulted in an increase in CO 2 /N 2 selectivity, and more elevated heats of CO 2 adsorption implied a strong reduction in CO 2 capture capacity. Specifically, NH 2 -ITQ-2 showed exceptionally high CO 2 /N 2 selectivity combined with the best separation capacity among the studied MWW-type zeolites [157][158][159][160][161].…”

Section: Other Processesmentioning

confidence: 94%

Layered Materials with Catalytic Applications: Pillared and Delaminated Zeolites from MWW Precursors

Díaz

2012

ISRN Chemical Engineering

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Delaminated and pillared zeolites are an innovative family of molecular sieves which introduced a different concept inside the synthesis of active catalysts or inorganic supports. These types of materials exhibit an elevated accessibility due to their open structure, characterized by the high external surface area without imposed restrictions controlled by the pore sizes. These open zeolites are conformed by crystalline ordered (pillared zeolites) or disordered (delaminated zeolites) individual layers, exhibiting textural properties which are favorable to carry out catalytic processes in which it is necessary to employ catalysts with completely accessible active sites. The elevated external surface area of these zeolites is profitable to generate more specific organic-inorganic materials, acting in this case as stable inorganic matrixes. The preparation of this open type-zeolites family is based on the modification of, previously synthesized, zeolitic precursors which are preexpanded to obtain the final delaminated or pillared zeolites which exhibit very different physicochemical properties compared with the starting precursors. Along this paper, the most relevant MWW-type high accessible zeolitic materials will be considered. Their nature, characteristics, and reactivity will be shown in the function of the employed synthesis method for their preparation and the postsynthesis treatments carried out, tuning their properties.

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“…Layered materials can therefore be exfoliated into individual sheets of few-layered nanostructures providing many functional sites which have enormous interest as catalysts [43,44]. They have also been proposed for enzyme immobilization on their very high, hydroxylated and ordered external surface [45], adsorption of carbon dioxide by functionalization [46], and enhancing the selective properties of polymer membranes [35].…”

Section: Layered Silicates Zeolites and Pseudozeolitesmentioning

confidence: 99%

Separation of H<sub>2</sub> and CO<sub>2</sub> Containing Mixtures with Mixed Matrix Membranes Based on Layered Materials

Rubio¹,

Zornoza²,

Gorgojo³

et al. 2014

COC

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Some membrane separation processes are gradually taking over conventional processes such as distillation, evaporation or crystallization as the technology progresses from bench-scale tests to large-scale prototypes. However, membranes for H 2 and CO 2 separation constitute a daring technology still under development. This overview focuses on mixed matrix membranes (MMMs), a special type of membranes in which a filler is dispersed in a polymer matrix, as a successful strategy to improve their permeability-selectivity performance while keeping the polymer processability. In particular, among all the possible fillers for MMMs, layered materials (porous zeolites and titanosilicates and graphite derivatives) are discussed in detail due to the several advantages they offer regarding selective microporosity, crystallinity and, what is most important, high specific surface area and aspect ratio. In fact, a selective and as thin as possible, i.e. with high aspect ratio, filler would help to develop high performance MMMs.

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Functionalization of Delaminated Zeolite ITQ-6 for the Adsorption of Carbon Dioxide

Cited by 139 publications

References 47 publications

Low concentration CO2 capture using physical adsorbents: Are metal–organic frameworks becoming the new benchmark materials?

Low concentration CO2 capture using physical adsorbents: Are metal–organic frameworks becoming the new benchmark materials?

Layered Materials with Catalytic Applications: Pillared and Delaminated Zeolites from MWW Precursors

Separation of H<sub>2</sub> and CO<sub>2</sub> Containing Mixtures with Mixed Matrix Membranes Based on Layered Materials

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