ZSM-5@MCM-41 composite porous materials with a core-shell structure: Adjustment of mesoporous orientation basing on interfacial electrostatic interactions and their application in selective aromatics transport

Luo, Xiaolin; Guo, Jiale; Chang, Pengmei; Qian, Huaming; Pei, Fei; Wang, Wei; Miao, Kangkang; Guo, Sifan; Feng, Guodong

doi:10.1016/j.seppur.2020.116516

Cited by 73 publications

(15 citation statements)

References 54 publications

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“…In this category of materials, the pore diameter varies between 2 and 50 nm (2 nm < d p < 50 nm). A distinction is made between crystalline mesoporous materials and ordered amorphous materials, which are intermediate between that of crystalline microporous solids of the zeolite type and disordered amorphous solids such as silica gel [35][36][37]. Mesoporous materials have several known applications such as catalysis, filtration, pollution control, optics, and even electronics.…”

Section: Mesoporous Materialsmentioning

confidence: 99%

Current State of Porous Carbon for Wastewater Treatment

et al. 2020

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Porous materials constitute an attractive research field due to their high specific surfaces; high chemical stabilities; abundant pores; special electrical, optical, thermal, and mechanical properties; and their often higher reactivities. These materials are currently generating a great deal of enthusiasm, and they have been used in large and diverse applications, such as those relating to sensors and biosensors, catalysis and biocatalysis, separation and purification techniques, acoustic and electrical insulation, transport gas or charged species, drug delivery, and electrochemistry. Porous carbons are an important class of porous materials that have grown rapidly in recent years. They have the advantages of a tunable pore structure, good physical and chemical stability, a variable specific surface, and the possibility of easy functionalization. This gives them new properties and allows them to improve their performance for a given application. This review paper intends to understand how porous carbons involve the removal of pollutants from water, e.g., heavy metal ions, dyes, and organic or inorganic molecules. First, a general overview description of the different precursors and the manufacturing methods of porous carbons is illustrated. The second part is devoted to reporting some applications such using porous carbon materials as an adsorbent. It appears that the use of porous materials at different scales for these applications is very promising for wastewater treatment industries.

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Section: Mesoporous Materialsmentioning

confidence: 99%

Current State of Porous Carbon for Wastewater Treatment

et al. 2020

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“…[7] Due to the synergistic effects, the zeolite-oxide core-shell structured catalysts with the rich active centers and an unique core-shell reaction pathway are widely applied in catalysis. [8] Liu et al [9] synthesized a core-shell ZSM-5@t-ZrO 2 for thiolation reaction. The special reaction pathway of mesoporous shell (t-ZrO 2 ) and micropore core (ZSM-5) improved the methanethiol selectivity and inhibited the carbon deposition.…”

Section: Introductionmentioning

confidence: 99%

A Convenient Synthesis of Core‐shell ZSM‐5@MoO₃ Catalyst for Enhanced Catalytic Properties in Methane Aromatization

Zhu

2022

ChemistrySelect

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A novel core‐shell ZSM‐5@MoO3 catalyst was successfully synthesized by the hydrothermal coating strategy, and its physicochemical properties and catalytic properties in methane aromatization were investigated using a physically‐blended ZSM‐5/MoO3 catalyst as a comparison. Multitechniques including XRD, SEM, TEM, EDS, N2 adsorption, ICP, IR and IG were employed to investigate the characteristics of methane aromatization reaction and the deactivation of carbon deposits. At the reaction temperature of 700 °C and a space velocity of 2400 mL g−1 h−1, methane conversion and aromatics selectivity of the core‐shell ZSM‐5@MoO3 catalyst were 11.3 % and 88.1 %, respectively, which were higher than those of the physically‐blended ZSM‐5/MoO3 catalyst by 3.1 % and 14.8 %, respectively. The special reaction pathway of core (ZSM‐5, acid sites)‐shell (MoO3, Mo sites) and the relatively close proximity between MoO3 and ZSM‐5 were mainly responsible for the excellent properties in the methane aromatization reaction. At the same time, the formation of the micro‐mesoporous property accelerated the mass‐transfer rate and inhibited the formation of carbonaceous deposition, greatly improving the stability of methane aromatization. Thanks to its core‐shell structure, ZSM‐5@MoO3 catalyst showed the excellent properties in methane aromatization.

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“…However, this substance has certain disadvantages, such as sensitivity to cracks [8] and low strength against atmospheric factors. Therefore, engineers are trying to increase the toughness of this polymer with the addition of an elastomeric phase to overcome the mentioned shortages [9][10][11][12][13][14][15][16][17][18]. One way to improve the mentioned properties is to add an elastomeric phase to increase the toughness [19,20].…”

Section: Introductionmentioning

confidence: 99%

Morphology and Mechanical Properties of Polyethylene Terephthalate/Ethylene Propylene Diene Monomer (PET/EPDM) in the Presence of Nanoclay

Liu¹,

Mirjalili²,

Valipour³

et al. 2020

Mater. Plast.

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This research deals with the mechanical properties, microstructure, and interrelations of triple nanocomposite based on PET/EPDM/Nanoclay. These properties were examined in different percentages of PET/EPDM blend with compatibilizer (Styrene-Ethylene/Butylene-Styrene)-G-(Maleic anhydrate) (SEBS-g-MAH). Results showed that the addition of 15% SEBS-g-MAH improved the toughness and impact strength of this nanocomposite. SEM micrographs indicated the most stable fuzzy microstructure in a 50/50 mixture of scattered phases of EPDM/SEBS-g-MAH. The effects of percentages of 1, 3, 5, 7 nanoclay Cloisite 30B (C30B) on the improvement of the properties were evaluated. With the addition of nano clay, the toughness and impact strength was reduced. Thermal destruction of nanoclay in processing temperature led to the decreasing dispersion of clay plates in the matrix and a reduction in the distances of nano clay plates in the composite compared to pure nano clay. XRD and TEM analysis was used to demonstrate the results. By adding 1% of nanoclay to the optimal sample, maximum stiffness, and Impact strength, among other nanocomposites, was achieved.

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ZSM-5@MCM-41 composite porous materials with a core-shell structure: Adjustment of mesoporous orientation basing on interfacial electrostatic interactions and their application in selective aromatics transport

Cited by 73 publications

References 54 publications

Current State of Porous Carbon for Wastewater Treatment

Current State of Porous Carbon for Wastewater Treatment

A Convenient Synthesis of Core‐shell ZSM‐5@MoO₃ Catalyst for Enhanced Catalytic Properties in Methane Aromatization

Morphology and Mechanical Properties of Polyethylene Terephthalate/Ethylene Propylene Diene Monomer (PET/EPDM) in the Presence of Nanoclay

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ZSM-5@MCM-41 composite porous materials with a core-shell structure: Adjustment of mesoporous orientation basing on interfacial electrostatic interactions and their application in selective aromatics transport

Cited by 73 publications

References 54 publications

Current State of Porous Carbon for Wastewater Treatment

Current State of Porous Carbon for Wastewater Treatment

A Convenient Synthesis of Core‐shell ZSM‐5@MoO3 Catalyst for Enhanced Catalytic Properties in Methane Aromatization

Morphology and Mechanical Properties of Polyethylene Terephthalate/Ethylene Propylene Diene Monomer (PET/EPDM) in the Presence of Nanoclay

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A Convenient Synthesis of Core‐shell ZSM‐5@MoO₃ Catalyst for Enhanced Catalytic Properties in Methane Aromatization