Synthesis and application of Cu(II) immobilized MCM-41 based solid Lewis acid catalyst for aminolysis reaction under solvent-free condition

Chaudhary, Garima; Gupta, Neha; Singh, Amit Pratap

doi:10.1016/j.poly.2021.115348

Cited by 7 publications

(4 citation statements)

References 99 publications

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“…The average pore size of LDO/MCM-41, LDO, and MCM- Furthermore, low-angle XRD patterns in Figure 1c shows that both MCM-41 and LDO/MCM-41 had a typical hexagonal lattice structure of mesopores as evident from three narrow reflections at 2θ = 2.3 • (100), 3.7 • (110), and 4.3 • (200). The lower intensity of LDO/MCM-41 can be explained by its lower degree of pore ordering and change in the scattering contrast in the metal-incorporated MCM-41 samples [20].…”

Section: N2 Sorptionmentioning

confidence: 99%

“…The deactivation which resulted from the coke deposition was greatly inhibited by the tuning of the carbon support's morphology. Besides the carbon support, mesoporous silicas (e.g., SBA-15, MCM-41) are widely used as heterogeneous catalyst supports owing to their large surface area, ordered porous channels with uniform pore size distribution, and relatively high thermal stability [20]. It was reported that the dispersion of metal oxides on the inert silica could create the structural defects, leading to the presence of new acid or basic sites.…”

Section: Introductionmentioning

confidence: 99%

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Mesoporous-Layered Double Oxide/MCM-41 Composite with Enhanced Catalytic Performance for Cyclopentanone Aldol Condensation

Yang,

Shang,

Wang

et al. 2023

Molecules

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Layered double oxides are widely employed in catalyzing the aldol condensation for producing biofuels, but its selectivity and stability need to be further improved. Herein, a novel MCM-41-supported Mg–Al-layered double oxide (LDO/MCM-41) was prepared via the in situ integration of a sol–gel process and coprecipitation, followed by calcination. This composite was first employed to catalyze the self-condensation of cyclopentanone for producing high-density cycloalkane precursors. LDO/MCM-41 possessed large specific surface area, uniform pore size distribution, abundant medium basic sites and Bronsted acid sites. Compared with the bulk LDO, LDO/MCM-41 exhibited a higher selectivity for C10 and C15 oxygenates at 150 °C (93.4% vs. 84.6%). The selectivity for C15 was especially enhanced on LDO/MCM-41, which was three times greater than that on LDO. The stability test showed that naked LDO with stronger basic strength had a rapid initial activity, while it suffered an obvious deactivation due to its poor carbon balance. LDO/MCM-41 with lower basic strength had an enhanced stability even with a lower initial activity. Under the optimum conditions (50% LDO loading, 170 °C, 7 h), the cyclopentanone conversion on LDO/MCM-41 reached 77.8%, with a 60% yield of C10 and 15.2% yield of C15.

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Section: N2 Sorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mesoporous-Layered Double Oxide/MCM-41 Composite with Enhanced Catalytic Performance for Cyclopentanone Aldol Condensation

Yang,

Shang,

Wang

et al. 2023

Molecules

View full text Add to dashboard Cite

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“…Furthermore, after the catalyst was filtered off, the reaction mixture was analyzed by ICP‐OES, which showed that no Cu(II) metal ion was detected (<1 ppm). [ 122 ]…”

Section: Metal–ligand Complexes Supported On Mcm‐41mentioning

confidence: 99%

“…Furthermore, after the catalyst was filtered off, the reaction mixture was analyzed by ICP-OES, which showed that no Cu(II) metal ion was detected (<1 ppm). [122] In the same year, Singh and his co-workers again developed a selective colorimetric and spectrophotometric probe (M86) for the recognition of Hg 2+ ions in watery media. The probe was prepared by the immobilization of ligand (L-propylsilyl) on the MCM-41 mesoporous silica surface.…”

Section: Miscellaneous Type Mcm-41-supported Metal Ligand Complexmentioning

confidence: 99%

Synthesis and catalytic applications of organo‐functionalized MCM‐41 catalyst: A review

Khan

Shaily²

2023

Applied Organom Chemis

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In recent times, mesoporous silica sieves gathered considerable attention from a fundamental as well as an applied perspective. Particularly, MCM‐41 has become increasingly popular among researchers because of its chemical flexibility and application in various fields. In addition, MCM‐41‐based materials are currently being extensively studied for their utility as substrates, adsorbents, catalysts, molecular hosts, and ion exchangers. This review article provides a thoughtful analysis of the developments in these areas, particularly emphasizing the recent advance in the functionalization of MCM‐41 via metal complex and their catalytic applications in a variety of reactions such as coupling reactions and oxidation reactions. This review explores the catalytic properties that led to such widespread use, and why there is now an increasing drive to synthesize such a catalytic system.

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Solid‐Acid Catalyzed Continuous‐Flow Aminolysis of Epoxides

Nishizawa,

Saito,

Kobayashi

2024

Chemistry A European J

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We report a solid‐acid catalyzed aminolysis of epoxides under continuous‐flow conditions. A titania‐zirconia supported molybdenum oxide catalyst demonstrated exceptional substrate compatibility, enabling the synthesis of β‐amino alcohols in excellent yields with high catalyst durability. Characterization of the catalyst revealed the crucial role of the titania‐zirconia ratio in optimizing its performance. Furthermore, this method was applied to the efficient, sequential‐flow synthesis of a rivaroxaban intermediate (an oral anticoagulant and the first direct factor Xa inhibitor), combining a hydrogenation step with the aminolysis reaction without the need for intermediate isolation.

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Synthesis and application of Cu(II) immobilized MCM-41 based solid Lewis acid catalyst for aminolysis reaction under solvent-free condition

Cited by 7 publications

References 99 publications

Mesoporous-Layered Double Oxide/MCM-41 Composite with Enhanced Catalytic Performance for Cyclopentanone Aldol Condensation

Mesoporous-Layered Double Oxide/MCM-41 Composite with Enhanced Catalytic Performance for Cyclopentanone Aldol Condensation

Synthesis and catalytic applications of organo‐functionalized MCM‐41 catalyst: A review

Solid‐Acid Catalyzed Continuous‐Flow Aminolysis of Epoxides

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