Microwave-assisted seeded growth of the submicrometer-thick and pure b-oriented MFI zeolite films using an ultra-dilute synthesis solution

Wang, Chaozheng; Liu, Xiufeng; Li, Jian; Zhang, Baoquan

doi:10.1039/c3ce40644j

Cited by 18 publications

(15 citation statements)

References 29 publications

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“…Other groups have also successfully adapted the Yoon technique in recent years for the synthesis of zeolite films or membranes. [31][32][33][34][35][36][37] Recently, Hedlund and co-workers extended the manual assembly technique to nanocrystals by controlling the humidity of the environment during the coating process. 38 The authors proposed, as shown in Fig.…”

Section: Synthesis Of Zeolite Seedsmentioning

confidence: 99%

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Zeolite membranes – a review and comparison with MOFs

et al. 2015

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aThe latest developments in zeolite membranes are reviewed, with an emphasis on the synthesis techniques, including seed assembly and secondary growth methods. This review also discusses the current industrial applications of zeolite membranes, the feasibility of their use in membrane reactors and their hydrothermal stability. Finally, zeolite membranes are compared with metal-organic framework (MOF) membranes and the latest advancements in MOF and mixed matrix membranes are highlighted.

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Section: Synthesis Of Zeolite Seedsmentioning

confidence: 99%

“…[31][32][33][34][35][36][37] Recently, Hedlund and co-workers extended the manual assembly technique to nanocrystals by controlling the humidity of the environment during the coating process. 38 The authors proposed, as shown in Fig.…”

Section: Tsapatsismentioning

confidence: 99%

Zeolite membranes – a review and comparison with MOFs

et al. 2015

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“…Besides, the array or film that was synthesized as such had to be fixed to the substrate surface using other materials before actual applications [ 16 , 17 ]. Basically, the availability of oriented seed layers would be a prerequisite to the epitaxial growth [ 34 ]. The manipulation of synthesis conditions was a commonly used method, which required a great deal of experimental investigations [ 35 ].…”

Section: Introductionmentioning

confidence: 99%

Efficient Manipulation of Continuous AFI-Type Aluminophosphate Membranes with Distinctive Microstructures on Macroporous α-Al2O3 Substrates

et al. 2018

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The availability of continuous and well-defined AFI-type aluminophosphate membranes (AFI membranes) would trigger their applications in innovative materials. A well-designed manipulation strategy is proposed to produce continuous AFI membranes with four different microstructures over porous α-Al2O3 substrates. A double-layer and highly c-oriented AFI membrane of hexagonal prisms is obtained when a thin layer of medium molecular weight (MMW) chitosan is employed as the structure-directing matrix together with aluminum isopropoxide (AIP) as the Al source. It can be transformed to a single-layer and highly c-oriented AFI membrane of hexagonal prisms if the structure-directing matrix is replaced by a thin layer of low molecular weight (LMW) chitosan. When the Al source is changed to pseudo-boehmite, the single-layer AFI membrane is composed of highly ordered spherical agglomerates of small crystals. Furthermore, the membrane will turn to the double-layer AFI membrane of highly-ordered crystal agglomerates if a thin layer of MMW chitosan is used once again, keeping pseudo-boehmite as the Al source. The manipulation methodology established here is rather reliable with a pretty high reproducibility.

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“…24 In fact, by going beyond the convection limitation of classical heating, microwave synthesis of inorganic porous systems in as short as 30 min to 1 h has been reported and concerns mostly nanoparticles or zeolites. [25][26][27][28][29] As far as surfactant-templated silicas are concerned, there are very few thorough investigations of microwave-assisted synthesis, except for triblock co-polymer templated SBA-15 or SBA-16. [30][31][32] To our knowledge, there are only two reports on well-structured cationic surfactant templated MCM-41 silica.…”

Section: Introductionmentioning

confidence: 99%

“…The robustness of the silica framework was investigated by comparing the structure and porosity after chemical extraction of the template (without calcination) and after calcination at 550 °C. Investigation of the silica condensation was also performed using 29 Si solid state NMR, while the templating surfactant stability was estimated from 13 C solid state NMR. Surfactant recyclability was also determined using a simple acidic extraction.…”

Section: Introductionmentioning

confidence: 99%