High-silica zeolites for adsorption of organic micro-pollutants in water treatment: A review

Jiang, Nan; Shang, Ran; Heijman, S.G.J.; Rietveld, L.C.

doi:10.1016/j.watres.2018.07.017

Cited by 426 publications

(179 citation statements)

References 152 publications

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“…Zeolite Y is a chief class of crystalline aluminosilicates materials with open‐framework structures and it has been used for separations, ion exchange and for acidic catalysts reactions . Because of the unique properties, Zeolite Y has been used as a support for synthesize of metal nanoparticles for various applications as catalysis and adsorption respectively ,. The copper catalyzed amination reactions have received significant attention from many organic chemists because of their wide utility in fine chemicals, dyes and polymers recent days …”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Copper Nanoparticles Supported on Zeolite Y and its Application in Catalytic C‐N Cross Coupling Reactions between Amines and Aryl halides

Raiza

Pandian

Kumar³

2019

ChemistrySelect

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A biosynthesis of Copper Nanoparticles supported on Zeolite Y and its application as efficient, reusable, heterogeneous catalyst in C−N cross coupling reactions between amines and aryl halides are reported. The biosynthesis of CuNPs/Zeolite Y was achieved by the reduction of CuSO4.5H2O with the lemon juice (without peal) and encapsulated into the Zeolite Y in a single step. In this biosynthetic method, the ascorbic acid present in the lemon juice acted as a reducing agent for CuSO4.5H2O. The CuNPs/Zeolite Y was characterized using UV‐Vis, powder XRD, FT‐IR, HR SEM, EDS and TGA. The average size of the CuNPs are found to be 50 nm and has large surface area for the efficient catalysis. The new catalyst is effect in catalyzing the C−N cross coupling reaction between amines and aryl halides (yield ranging from 89% to 95% depends on amine and aryl halide used). The catalyst can be recovered from the reaction mixture by simple procedure. The recovered catalyst is found to be active in catalyzing the coupling reaction even after five runs.

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Section: Introductionmentioning

confidence: 99%

Biosynthesis of Copper Nanoparticles Supported on Zeolite Y and its Application in Catalytic C‐N Cross Coupling Reactions between Amines and Aryl halides

Raiza

Pandian

Kumar³

2019

ChemistrySelect

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“…Among pentasil zeolite families, the all‐silica (aluminum‐free) MFI‐type silicalite‐1 and its structure analog MEL‐type silicate‐2 have attracted a great deal of concern. Due to thermal/structural stability, medium pore opening (0.51–0.56 nm), and hydrophobicity with tunable amount of internal silanol groups (depending on synthesis approach) but lacking solid acidity, they are promising adsorbents in particular for concentrating dilute organics from aqueous solution in biofuel production process and for removing trace amount of organic contaminants in water treatment processes . Silicalite‐2, characteristic of two identical orthogonally intersecting channels, is likely more diffusion‐favored as compared to silicalite‐1 containing the zigzag‐crossing straight and side‐pocket channels .…”

Section: Introductionmentioning

confidence: 99%

Dissolution–Recrystallization Formation of Huge Thin 2D Silicalite Lamella for Promoted Sorption

Liu

Yang

Wang

et al. 2020

Adv Materials Inter

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An all silica MEL‐type silicalite‐2 nanocrystal is hydrothermally treated in coexistence with cetyltrimethylammonium bromide (CTAB) and tetrapropylammonium hydroxide (TPAOH) at ordinary and elevated temperatures. From monitoring its structural transition process by various physico‐chemical methodologies, it is found that, instead of simple delamination, silicalite‐2 nanocrystal changes with a dissolution and recrystallization mechanism by treatment at an elevated temperature and for a long time, that is, it is first dissolved and then reorganized to huge 2D platelets via an intermediate step forming periodic mesoporous material. The newly formed nanoplatelets (h‐nanoplatelets) from in‐plane growth along a (or b)‐, c‐directions (normal to b (or a)‐axis) are of silicalite (either MEL or MEL/MFI intergrowth)‐type framework topology with a thickness of 3.3 nm (the equivalent of ≈1.6 unit cell) and interspersed with a minor part of small square‐like MFI‐type nanoplatelets (s‐nanoplatelets). The h‐nanoplatelets have expanded lattice parameters and a larger micropore size compared to the parent silicalite‐2 nanocrystal and s‐nanoplatelets, whose micropore structure are modified so as to benefit from both equilibrium adsorption and desorption‐recovering ability of organic contaminants particularly at a low vapor pressure range. This is the first report regarding the dissolution–recrystallization formation of 2D lamella‐type silicalites mediated by popular types of surfactant and base species.

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“…In the past few decades, various types of adsorbents including zeolites 12 , metal organic frameworks (MOf) 13,14 , functionalised porous silica, porous polymers and carbonaceous materials 15 have been investigated for development of advanced NBC suit. Among them, MOf 13 and nanoporous carbons have gained much attention due to its higher surface area.…”

Section: Introductionmentioning

confidence: 99%

Chemical Protection Studies of Activated Carbon Spheres based Permeable Protective Clothing Against Sulfur Mustard, a Chemical Warfare Agent

et al. 2019

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Technological advancements in the field of chemical threat have made it possible to create extremely dangerous chemical warfare agents (CWA). Hence, the effective protection of personnel is very important in a chemical warfare scenario amidst the current climate of terrorism awareness. In particular, body protection plays a substantial role in the chemical defence considering the urgency of situation in the nuclear, biological and chemical environment. Activated carbon spheres (ACS) based permeable chemical protective clothing (coverall) was developed for protection against CWA. The adsorbent material i.e, ACS used in this protective clothing provided higher adsorption capacity (1029 mg/g in terms of iodine) and low thermal burden (34 °C WBGT index) compared to earlier indigenously developed NBC suit. This article focuses on the extensive evaluation of chemical protective clothing against sulfur mustard (HD), a CWA. The results revealed that the developed protective clothing provided more than 24 h protection against HD. This chemical protective suit is light weight (< 2.75 kg for XL size). It also has higher air permeability (> 30 cm 3 /s/cm 2 ) as well as less water vapour resistance (< 9.6 m 2 Pa/W). With continued innovations in materials and attention to key challenges it is expected that advanced, multifunction chemical protective suit will play a pivotal role in the CWA protection scenario.

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High-silica zeolites for adsorption of organic micro-pollutants in water treatment: A review

Cited by 426 publications

References 152 publications

Biosynthesis of Copper Nanoparticles Supported on Zeolite Y and its Application in Catalytic C‐N Cross Coupling Reactions between Amines and Aryl halides

Biosynthesis of Copper Nanoparticles Supported on Zeolite Y and its Application in Catalytic C‐N Cross Coupling Reactions between Amines and Aryl halides

Dissolution–Recrystallization Formation of Huge Thin 2D Silicalite Lamella for Promoted Sorption

Chemical Protection Studies of Activated Carbon Spheres based Permeable Protective Clothing Against Sulfur Mustard, a Chemical Warfare Agent

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