Performance of Al-MCM-41 nanospheres as catalysts for dimethyl ether production

Bedoya, J.C.; Valdez, R.; Cota, L.; Alvarez-Amparán, Marco A.; Olivas, A.

doi:10.1016/j.cattod.2021.01.010

Cited by 22 publications

(17 citation statements)

References 43 publications

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“…The small image in Figure 4a shows the TEM observation results. 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].…”

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

confidence: 72%

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: 72%

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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“…S2 (ESI †); all of the samples had an irregular spherical shape of around 0.3-0.5 mm in diameter, with an evident crystal facet and crystal axis or edge, showing that the mesoscopic structure is well ordered. 34 The energy dispersion X-ray spectrum (EDS) image in Fig. S3 (ESI †) shows the elemental analysis in IWI-2.5% catalysts with a uniform distribution of Al, Si, and Ni on the surface of Al-MCM-41-15.…”

Section: Resultsmentioning

confidence: 99%

Tuning the Ni site location of bifunctional Ni-based catalysts for improving the performance in ethylene oligomerization

Zhou

et al. 2022

New J. Chem.

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“…Mesoporous materials have been widely studied and applied in catalysis for their unique long-range ordered hexagonal symmetric channel structure and large surface area. [26][27][28][29][30] Herein, by reacting with APS and then nine substituted aromatic aldehydes, MCM materials were chemically modified with nine functional groups as the supports of Pd 2+ cations. The functional groups on the MCM-41 were confirmed by FT-IR spectra (Figures 1, S1, and S2).…”

Section: Characterization Of Supported Palladium Catalystsmentioning

confidence: 99%

Study on the relationship of catalytic activities and o‐Ps annihilation properties of supported palladium species chelated by different functional groups

Shao

et al. 2023

Applied Organom Chemis

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A series of Schiff‐base functional groups modified MCM‐41 materials have been synthesized and used as the supports of palladium species. The chemical structures of MCM‐41 functionalized by nine Schiff‐base functional groups were characterized by Fourier transform infrared spectroscopy (FT‐IR), whereas their grafting densities of functional groups were achieved from the results of thermogravimetric analysis (TGA) and elemental analysis (EA). Small angle powdered X‐ray (SAX) patterns demonstrate that the ordered mesoporous structures of MCM‐41 were well retained after modification of functional groups and immobilization of Pd2+ cations. Moreover, the regular mesoporous structures of supports and homogeneous dispersions of Pd2+ cations were characterized by transmission electron microscopy (TEM). The positron annihilation lifetime spectroscopic (PALS) results revealed that the electronic and steric factors of functional groups could affect the o‐Ps annihilation properties of support Pd2+ cations. Meanwhile, the catalytic activities of these supported Pd2+ cations chelated by different functional groups were determined by the Heck reaction of iodobenzene with n‐butyl acrylate. At last, the catalytic activities of these supported Pd2+ cations were linearly correlated to their o‐Ps annihilation properties. This result demonstrates that the catalytic activities of supported Pd2+ cations chelated by different functional groups can be readily determined by the o‐Ps annihilation, which can be potentially used in the design and preparation of highly active palladium catalysts.

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Performance of Al-MCM-41 nanospheres as catalysts for dimethyl ether production

Cited by 22 publications

References 43 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

Tuning the Ni site location of bifunctional Ni-based catalysts for improving the performance in ethylene oligomerization

Study on the relationship of catalytic activities and o‐Ps annihilation properties of supported palladium species chelated by different functional groups

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