Article
Multidisciplinary Sciences
Behrooz Maleki, Reza Sandaroos, Sahar Peiman
Summary: Six catalysts MnL1-MnL6, containing two crown ether rings and their analogs supported on the MCM-41 heterogeneous substrate (MnL1@MCM41-MnL5@MCM41), were synthesized and characterized. The mixture of molecular oxygen as an oxidant and these catalysts were used for the epoxidation of styrene. The supported catalysts showed better performance compared to the unsupported analogs, and they did not require an axial base and reducing agent.
Article
Chemistry, Applied
Arida Jabbari, Mohsen Nikoorazm, Parisa Moradi
Summary: In this study, 2-Hydroxy-5-nitrobenzaldehyde Schiff-base complexes of cadmium and manganese on MCM-41 were investigated as stable, efficient, environment friendly, reusable, and chemoselective nanocatalysts. The catalysts were characterized by various techniques and were found to be capable of selectively oxidizing sulfides to sulfoxide derivatives using hydrogen peroxide as an oxidant. The catalysts exhibited good recovery and reuse properties, with the recovered catalysts showing similar characteristics to the fresh catalysts, confirming their heterogeneous nature and stability.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Chemistry, Applied
Somayeh Molaei, Mohammad Ghadermazi
Summary: A novel, recyclable, and greener catalyst has been developed for the thioether formation reaction and the synthesis of disulfides. This method shows a 100% atom economy and provides a more environmentally friendly approach to these reactions. The catalyst exhibits high chemo-selectivity, with simple recovery and consistent activity upon reuse.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yonghai Hui, Yongfei Zhang, Yongyue Luo, Jianpeng Li, Yun Wang, Tianming Gao, Jialiang Xia, Sheng Wang, Shiqi Zhang
Summary: MCM-41-supported Schiff base and CuSO(4)·5H(2)O catalyzed the one-pot three-component condensation of cyclic ketones, amines and thioglycolic acid in toluene, leading to high yields of spiro thiazolidinone derivatives. The catalyst was easily recovered and reused, demonstrating practicality on a larger scale and paving the way for further investigation into reactions involving other cyclic ketones and thioglycolic acid.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Chemistry, Analytical
Syunichi Oshima, Hidekazu Ohinata, Takushi Matsuno, Kenta Takasawa, Yujiro Watanabe, Kaoru Fujinaga, Geoffrey W. Stevens, Yu Komatsu
Summary: Surface-functionalized mesoporous silicates MCM-41s with specific groups prepared via Schiff base reaction can adsorb various metal ions, where imine-N and heterocyclic-N atoms act as donor atoms. Additionally, the hydrophobicity derived from organo-functional groups on modified MCM-41 surfaces contributes to enhanced adsorption abilities.
ANALYTICAL SCIENCES
(2021)
Article
Chemistry, Applied
Tavan Kikhavani, Parisa Moradi, Mohammad Mashari-Karir, Jalil Naji
Summary: This work discusses the synthesis and characterization of a new copper Schiff-base complex supported on magnetic MCM-41 as a reusable catalyst. The catalyst displayed good selectivity, high activity, stability, and easy magnetic separation, making it suitable for organic reactions. Several techniques were used to characterize the catalyst, and it was found that the catalytic efficiency was maintained after multiple recycling.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Parisa Moradi, Batool Zarei, Yunes Abbasi Tyula, Mohsen Nikoorazm
Summary: This project presents a simple method for synthesizing and characterizing neodymium on MCM-41 magnetic nanoparticles (MNPs) as a reusable nanocatalyst. The synthesised nanocatalyst showed high activity, good selectivity, and stability in the homoselective synthesis of tetrazoles. The recycled catalyst exhibited a good match with the fresh catalyst in terms of its catalytic activity. Rating: 9/10.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Review
Chemistry, Organic
Can Liu
Summary: Research on sulfoxides and disulfides is important for chemists due to their significance in drug and pharmaceutical molecules. Nanomaterials, particularly MCM-41 and MCM-48, are suggested as ideal supports for immobilizing metal complexes. These metal-MCM nanomaterials have been widely used for catalytic oxidation reactions of sulfides to sulfoxides and oxidative coupling of thiols to disulfides.
SYNTHETIC COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Yangyu Liu, Chunquan Li, Arman Peyravi, Zhiming Sun, Guangxin Zhang, Keivan Rahmani, Shuilin Zheng, Zaher Hashisho
Summary: Mesoporous silica MCM-41 was synthesized using sodium silicate extracted from natural Opoka, showing remarkable adsorption capacity for organic vapors mixture at 20 degrees Celsius and promising applications in VOCs abatement.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Arti Malik, Udai P. Singh
Summary: A simple and reusable catalyst was fabricated by implanting a Palladium (II) Schiff base complex on the surface of MCM-41 using post-grafting methodology. The designed heterogeneous catalyst was successfully characterized and showed excellent structural and chemical stability. It was used for a range of Heck reactions with different aryl halides, providing high yield in a short time period and can be reused multiple times without significant loss of catalytic efficiency.
Article
Chemistry, Physical
Somayeh Shirali, Alireza Salimi Beni
Summary: An efficient and reusable catalyst was synthesized by immobilizing azacrown ether onto amine-functionalized mesoporous MCM-41. The catalyst was used for the synthesis of hexahydroquinoline derivatives under solvent-free conditions at room temperature, showing excellent catalytic activity and recyclability. Characterization of the heterogeneous catalyst was performed using various techniques such as TGA, XRD, TEM, 1H NMR, 13C NMR, and FT-IR.
Article
Chemistry, Applied
Suhana Karim, Sanchari Dasgupta, Rumana Parveen, Subhendu Biswas, Debasis Das
Summary: Three new mononuclear copper Schiff base complexes were synthesized and HmC_3 exhibited the highest efficiency in killing cancer cells. By immobilizing HmC_3 onto a nano-matrix, its cellular permeability was improved, resulting in better cancer cell killing property.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Ang Li, Xiao Chen, Tingting Guo, Guangtong Hai, Panpan Liu, Han Yu, Jianhang Xu
Summary: This study utilized molecular dynamics to investigate the molecular motion mechanisms of PCMs with different functional groups confined in mesoporous MCM-41, aiming to reveal the interaction mechanisms between the two at the molecular and atomic levels to provide theoretical guidance for the design and preparation of high-performance composite PCMs based on MCM-41.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Energy & Fuels
Yang Liu, Junjie Liao, Liping Chang, Weiren Bao
Summary: This paper investigates the adsorption performance of silver-modified mesoporous materials in removing thiophenic compounds. The results show that the adsorption of thiophene by the sorbents involves S-Ag and pi complexation reactions, and the adsorption efficiency is greatly affected by benzene. XPS analysis reveals that silver interacts strongly with the carrier and forms Ag-O-Si bonds as the active centers for thiophenic compounds. The Mulliken charges of sulfur atoms have an impact on the interactions between silver and thiophene sulfur compounds.
Article
Chemistry, Applied
Marjan Faramarzi, Hamid Khanmohammadi, Mojgan Zendehdel
Summary: A new molecular anion receptor, HL, was synthesized and covalently anchored onto MCM-41 scaffold to prepare a novel hybrid organic-inorganic chromogenic material, HL/MCM-41. The prepared chromogenic probe showed unique and rapid sensitivity towards CN- over other interfering anions, and could easily be visualized through naked eye detection even at low concentrations, without the need for spectroscopic instrumentation.
JOURNAL OF POROUS MATERIALS
(2022)
