Mesoporous MCM-41 derived from natural Opoka and its application for organic vapors removal

Liu, Yangyu; Li, Chunquan; Peyravi, Arman; Sun, Zhiming; Zhang, Guangxin; Rahmani, Keivan; Zheng, Shuilin; Hashisho, Zaher

doi:10.1016/j.jhazmat.2020.124911

Cited by 28 publications

(7 citation statements)

References 57 publications

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“…The results showed a complete and ordered honeycomb hexagonal structure, indicating a typical porous structure and highly ordered mesopores [21]. The results confirm the successful synthesis of MCM-41 with a long-range order and two-dimensional hexagonal pore structure [22]. When the additional amount of grafted NH 2 -Al/MCM-41 with 2.5 to 7.5 vol.% amine functional groups is calculated (Figure 4b-d), the particle size is approximately 0.13-0.30 µm.…”

Section: Sem Images Of Nh 2 -Al/mcm-41supporting

confidence: 70%

Synthesis and Grafted NH2-Al/MCM-41 with Amine Functional Groups as Humidity Control Material from Silicon Carbide Sludge and Granite Sludge

et al. 2021

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Mesoporous Al/MCM-41 was synthesized by extracting silicon carbide sludge and granite sludge as the sources of silicon and aluminum. Different concentrations of aminosilane (2.5, 5, 7.5 vol.%) were used to reflux the grafted NH2-Al/MCM-41 with amine functional groups (NH2-Al/MCM-41). The physical and chemical characteristics were analyzed. The results confirmed that silicon carbide sludge and granite sludge can effectively synthesize Al/MCM-41 with low cost and environmental protection. Reflow grafted amine functional groups can effectively improve the surface properties of NH2-Al/MCM-41. The moisture adsorption and desorption capacity of grafted NH2-Al/MCM-41 with amine functional groups was also studied. Based on moisture adsorption and desorption capacity, the surface properties of NH2-Al/MCM-41 were studied. When 5 vol.% of NH2-Al/MCM-41 amine functional groups is added, the moisture adsorption and desorption capacity is best. When the relative humidity = 95%, the equilibrium moisture content is 39.4 kg/kg, which complies with the standard of Japanese Industrial Standard (JIS A 1475). Therefore, the use of waste derived from the industry to replace expensive commercial materials was simple and environmentally friendly, and the grafted NH2-Al/MCM-41 with amine functional groups can be utilized in multiple applications, particularly as moisture regulation materials in building engineering.

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Section: Sem Images Of Nh 2 -Al/mcm-41supporting

confidence: 70%

Synthesis and Grafted NH2-Al/MCM-41 with Amine Functional Groups as Humidity Control Material from Silicon Carbide Sludge and Granite Sludge

et al. 2021

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“…These M41S molecular sieves are mainly applied in catalysis [ 66 ], adsorption [ 65 ], and controlled release of drugs [ 67 ]. The main advantage of this mesoporous silica is its unique chemical structure consisting of the high density of functional silanol groups (Si–OH), pore size and shape can be molded during the synthesis process, and the internal surface can be easily modified with organic and inorganic groups [ 65 , 68 , 69 ].…”

Section: Co 2 Adsorption Using Mesoporous Silica M...mentioning

confidence: 99%

Carbon Capture Using Porous Silica Materials

et al. 2023

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As the primary greenhouse gas, CO2 emission has noticeably increased over the past decades resulting in global warming and climate change. Surprisingly, anthropogenic activities have increased atmospheric CO2 by 50% in less than 200 years, causing more frequent and severe rainfall, snowstorms, flash floods, droughts, heat waves, and rising sea levels in recent times. Hence, reducing the excess CO2 in the atmosphere is imperative to keep the global average temperature rise below 2 °C. Among many CO2 mitigation approaches, CO2 capture using porous materials is considered one of the most promising technologies. Porous solid materials such as carbons, silica, zeolites, hollow fibers, and alumina have been widely investigated in CO2 capture technologies. Interestingly, porous silica-based materials have recently emerged as excellent candidates for CO2 capture technologies due to their unique properties, including high surface area, pore volume, easy surface functionalization, excellent thermal, and mechanical stability, and low cost. Therefore, this review comprehensively covers major CO2 capture processes and their pros and cons, selecting a suitable sorbent, use of liquid amines, and highlights the recent progress of various porous silica materials, including amine-functionalized silica, their reaction mechanisms and synthesis processes. Moreover, CO2 adsorption capacities, gas selectivity, reusability, current challenges, and future directions of porous silica materials have also been discussed.

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“…2−6 Compared with the common destructive treatment, recovery of VOCs has been confirmed to be a cost-effective technique based on economic and environmental considerations. 7,8 Recovery techniques such as adsorption, absorption, condensation, and membrane separation have been widely studied and developed. Adsorption is generally regarded as a relatively mature technique for economically and effectively removing VOCs, whereas it is often accompanied by adsorbent regeneration requirement and high equipment and maintenance costs.…”

Section: Introductionmentioning

confidence: 99%

“…With the rapid development of urbanization and industrialization, the emission of volatile organic chemicals (VOCs) has continued to increase in the past decades, which causes serious environmental and human health issues . To reduce VOC emissions, a number of techniques have been developed, which can be divided into destructive (catalytic oxidation, biodegradation, thermal oxidation, and plasma catalysis) and recovery treatments (membrane separation, absorption, adsorption, and condensation). − Compared with the common destructive treatment, recovery of VOCs has been confirmed to be a cost-effective technique based on economic and environmental considerations. , Recovery techniques such as adsorption, absorption, condensation, and membrane separation have been widely studied and developed. Adsorption is generally regarded as a relatively mature technique for economically and effectively removing VOCs, whereas it is often accompanied by adsorbent regeneration requirement and high equipment and maintenance costs. − …”

Section: Introductionmentioning

confidence: 99%

Design of High-Humidity-Proof Hierarchical Porous P-ZIF-67(Co)-Polymer Composite Materials by Surface Modification for Highly Efficient Volatile Organic Compound Adsorption

Wang

et al. 2022

Ind. Eng. Chem. Res.

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The ubiquitous water vapor in industrial gas is a challenge for volatile organic compound (VOC) adsorbents. Herein, we have developed a strategy to improve the hydrophobicity and water stability of ZIF-67(Co) through internal and external modification. Through amine modification of the carrier surface rich in nanoscale roughness, the shape and size of ZIF-67(Co) are changed. ZIF-67(Co) is uniformly anchored on the macroporous surface of polyacrylates (PA) through interface coordination, forming a unique hierarchical porous structure. Compared with the original ZIF-67(Co), the toluene adsorption efficiency of ZIF-67(Co)@PA is increased by 2.75 times at 298 K and at a toluene partial pressure of P/P 0 = 0.005. Furthermore, to inhibit undesired water adsorption due to the rich defect sites, hydrophobically modified ZIF-67(Co)@PA (yielding P-ZIF-67(Co)@PA) has also been prepared, which exhibits a slight decrease in toluene adsorption and maintains the advantages of low water vapor adsorption and high hydrophobicity to improve the water stability of ZIF-67(Co).

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Mesoporous MCM-41 derived from natural Opoka and its application for organic vapors removal

Cited by 28 publications

References 57 publications

Synthesis and Grafted NH2-Al/MCM-41 with Amine Functional Groups as Humidity Control Material from Silicon Carbide Sludge and Granite Sludge

Synthesis and Grafted NH2-Al/MCM-41 with Amine Functional Groups as Humidity Control Material from Silicon Carbide Sludge and Granite Sludge

Carbon Capture Using Porous Silica Materials

Design of High-Humidity-Proof Hierarchical Porous P-ZIF-67(Co)-Polymer Composite Materials by Surface Modification for Highly Efficient Volatile Organic Compound Adsorption

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