Solvent-free synthesis of nanosized hierarchical sodalite zeolite with a multi-hollow polycrystalline structure

Zeng, Shangjing; Wang, Qianqian; Li, Ang; Huang, Weiwei; Zhang, Zongtao; Qiu, Shilun

doi:10.1039/c6ce01373b

Cited by 11 publications

(5 citation statements)

References 44 publications

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“…Notably, the resultant Pt/ZSM‐5 nanoshell catalyst showed four‐fold enhanced hydrogenation rates compared with those obtained over the Pt@hollow S‐1 catalysts, as well as improved thermal stability. Subsequently, many other zeolites with nanobox morphology, such as LTA , SOD ,[53a] and CHA ,[46d] have also been prepared.…”

Section: Metal Clusters Confined In Zeolitesmentioning

confidence: 99%

Ultrasmall Metal Nanoparticles Confined within Crystalline Nanoporous Materials: A Fascinating Class of Nanocatalysts

2018

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Crystalline nanoporous materials with uniform porous structures, such as zeolites and metal–organic frameworks (MOFs), have proven to be ideal supports to encapsulate ultrasmall metal nanoparticles (MNPs) inside their void nanospaces to generate high‐efficiency nanocatalysts. The nanopore‐encaged metal catalysts exhibit superior catalytic performance as well as high stability and catalytic shape selectivity endowed by the nanoporous matrix. In addition, the synergistic effect of confined MNPs and nanoporous frameworks with active sites can further promote the catalytic activities of the composite catalysts. Herein, recent progress in nanopore‐encaged metal nanocatalysts is reviewed, with a special focus on advances in synthetic strategies for ultrasmall MNPs (<5 nm), clusters, and even single atoms confined within zeolites and MOFs for various heterogeneous catalytic reactions. In addition, some advanced characterization methods to elucidate the atomic‐scale structures of the nanocatalysts are presented, and the current limitations of and future opportunities for these fantastic nanocatalysts are also highlighted and discussed. The aim is to provide some guidance for the rational synthesis of nanopore‐encaged metal catalysts and to inspire their further applications to meet the emerging demands in catalytic fields.

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Section: Metal Clusters Confined In Zeolitesmentioning

confidence: 99%

Ultrasmall Metal Nanoparticles Confined within Crystalline Nanoporous Materials: A Fascinating Class of Nanocatalysts

2018

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“…Zeng et al [ 42 ] synthesized hierarchically porous SOD zeolites by the solvent-free method with organosilane as a mesopore-generating agent. Figure 2 illuminated the schematic process of the growth mechanism for hierarchically porous SOD via the solvent-free method.…”

Section: Formation Of Hierarchical Pore Structurementioning

confidence: 99%

“…Schematic process of the growth mechanism for hierarchically porous SOD via solvent-free method. Reproduced from Ref [42]. with permission from The Royal Society of Chemistry.…”

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confidence: 99%

A Brief Review on Solvent-Free Synthesis of Zeolites

2021

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The traditional hydrothermal method to prepare zeolite will inevitably use a large amount of water as a solvent, which will lead to higher autogenous pressure, low efficiency, and wastewater pollution. The solvent-free method can be used to synthesize various types of zeolites by mechanical mixing, grinding, and heating of solid raw materials, which exhibits the apparent advantages of high yield, low pollution, and high efficiency. This review mainly introduces the development process of solvent-free synthesis, preparation of hierarchical zeolite, morphology control, synthesis mechanism and applications of solvent-free methods. It can be believed that solvent-free methods will become a research focus and have enormous industrial application potential.

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“…Thus, very few attempts have been made to utilize conventional sodalite in the adsorption of bulky molecules such as dyes. [ 49,50 ]…”

Section: Introductionmentioning

confidence: 99%

“…Thus, very few attempts have been made to utilize conventional sodalite in the adsorption of bulky molecules such as dyes. [49,50] Reduction of the sodalite crystallite size from the micrometer to the nanometer scale results in large intercrystalline mesopores. This leads to the exposure of a larger fraction of the well-defined, stable zeolite surface for adsorption of bulky molecules and substantially increases the performance of the material.…”

Section: Introductionmentioning

confidence: 99%

One‐step green synthesis of nano‐sodalite zeolite and its performance for the adsorptive removal of crystal violet

Gilani

Tilami

Azizi

2021

J Chinese Chemical Soc

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In this study, a novel approach for the synthesis of nano‐sodalite zeolite crystals is explored. Synthesized nanocrystals were then characterized successfully via various techniques such as X‐ray diffraction (XRD), Fourier transform infrared (FT‐IR), scanning electronic microscopy (SEM), and Brunauer–Emmett–Teller (BET), and energy‐dispersive X‐ray analysis (EDX). Then, the performance of nano‐sodalite zeolite was evaluated for its potential in the adsorptive removal of cationic crystal violet (CV) dye. The effects of various experimental parameters, such as pH, adsorbent dosage, contact time, initial dye concentration, and temperature, were investigated in batch mode. Also, the adsorption isotherm, kinetic, and thermodynamic parameters were studied. The equilibrium sorption data were fitted better by the Freundlich isotherm than by the Langmuir isotherm. The kinetic adsorption data obeyed the Lagergren pseudo‐second order model. Thermodynamic parameters analysis revealed that the adsorption of CV from an aqueous solution by nano‐sodalite zeolite was a spontaneous and endothermic process. The results indicated that nano‐sodalite zeolite could be applied as a promising adsorbent for the efficient removal of CV from aqueous solutions.

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Solvent-free synthesis of nanosized hierarchical sodalite zeolite with a multi-hollow polycrystalline structure

Cited by 11 publications

References 44 publications

Ultrasmall Metal Nanoparticles Confined within Crystalline Nanoporous Materials: A Fascinating Class of Nanocatalysts

Ultrasmall Metal Nanoparticles Confined within Crystalline Nanoporous Materials: A Fascinating Class of Nanocatalysts

A Brief Review on Solvent-Free Synthesis of Zeolites

One‐step green synthesis of nano‐sodalite zeolite and its performance for the adsorptive removal of crystal violet

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