Article
Biochemistry & Molecular Biology
Jinfan Yang, Ning Shang, Jiachen Wang, Huimin Liu
Summary: A novel MCM-41-supported Mg-Al-layered double oxide (LDO/MCM-41) was prepared and employed as a catalyst for the aldol condensation reaction. Compared to bulk LDO, LDO/MCM-41 exhibited higher selectivity and stability, achieving better performance at lower activity.
Article
Chemistry, Organic
Datoussaid Yazid, Ali-Dahmane Tewfik, Mehiaoui Nawei, Lamia Brahmi, Kibou Zahira, Hamacha Rachida, Choukchou-Braham Noureddine
Summary: Formamidine derivatives were synthesized efficiently in this study using a cheap, stable, and non-toxic catalyst, Al-MCM-41, resulting in improved yields and solvent-free conditions.
LETTERS IN ORGANIC 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
Chemistry, Applied
J. C. Bedoya, R. Valdez, L. Cota, M. A. Alvarez-Amparan, A. Olivas
Summary: In this study, mesoporous Al-MCM-41 nanospheres with variable sizes were successfully synthesized and characterized, showing hexagonal and mesoporous structure with the successful incorporation of Al ions. The smaller nanospheres exhibited more medium acidic sites on the surface. All samples displayed good selectivity towards DME, with the smallest nanospheres achieving 78% DME yield at 300 degrees C. The stability test revealed high DME yield (>60%) maintained during a 48-hour time-on-stream, indicating the potential for material recycling.
Article
Chemistry, Physical
Luis H. Molina-Conde, Alejandro Suarez-Mendez, Daniel E. Perez-Estrada, Tatiana E. Klimova
Summary: Ni/Al-MCM-41(x) catalysts with varying Si/Al ratios were synthesized and tested in the hydrodeoxygenation of anisole. The catalysts exhibited higher activities and selectivities compared to reference catalysts without Al. The optimal performance was achieved with the Ni/Al-MCM-41(90) catalyst, attributed to a synergistic effect between metal and acid sites.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Analytical
Jian Zhang, Ximo Wang, Siyan Zhan, Hui Li, Changpo Ma, Zumin Qiu
Summary: The Mg/Al-LDH nanoflakes decorated magnetic mesoporous MCM-41 showed excellent adsorption properties for humic acid removal, with a spontaneous and endothermic process following pseudo-second-order and Langmuir isotherm models. The adsorbent demonstrated practical application and regeneration abilities, with electrostatic interactions and ion-exchange playing important roles in the adsorption process.
MICROCHEMICAL JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Miguel Sanchez-Fuente, Alberto Lopez-Magano, Alicia Moya, Ruben Mas-Balleste
Summary: Condensation of BINAPO-(PhCHO)(2) and 1,3,5-tris(4-aminophenyl)benzene(TAPB) leads to a new imine-based chiral organic material (COM) that can be post-functionalized through reductive transformation of imine linkers to amines. Although the imine-based material is not stable enough to be used as a heterogeneous catalyst, the reduced amine-linked framework can be efficiently utilized in asymmetric allylation of various aromatic aldehydes. The obtained yields and enantiomeric excesses are comparable to those observed for the molecular BINAP oxide catalyst, with the added advantage of recyclability offered by the amine-based material.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Mohammed Hachemaoui, Carmen B. Molina, Carolina Belver, Jorge Bedia, Adel Mokhtar, Rachida Hamacha, Bouhadjar Boukoussa
Summary: In this study, catalysts based on MCM-41 modified with different metals were prepared by a hydrothermal route and calcined, confirming the formation of metal oxides on their surfaces. The results showed that Cr/MCM-41 and Fe/MCM-41 catalysts exhibited high activity and stability in the catalytic wet peroxide oxidation of acetaminophen, with Fe/MCM-41 showing the best stability among them.
Article
Chemistry, Multidisciplinary
Yu Lin Hu, Qi Rong, Chen Chen, Hong Liang Chen
Summary: This study presents a successful strategy for the generation of multifunctional heterogeneous supported ionic liquid catalysts and their application in the synthesis of dihydroquinazolinones. The influence of different catalysts and reaction parameters on the catalytic behaviors were investigated, and (2)Fe-MCM-41/IL(0.6) was found to exhibit the optimal catalytic efficiency.
Article
Chemistry, Multidisciplinary
Oscar de la Iglesia, Miryan Sarango, Mikel Munarriz, Magdalena Malankowska, Alberto Navajas, Luis M. Gandia, Joaquin Coronas, Carlos Tellez
Summary: The mesoporous material Sn-In-MCM-41 was synthesized and used as a catalyst for the transformation of sugars to methyl lactate (ML). The Sn-In-MCM-41 catalyst showed better performance compared to Sn-MCM-41 and In-MCM-41 catalysts, with higher yields and good reusability. Furthermore, the use of Sn-In-MCM-41 also reduced environmental impacts compared to Sn-MCM-41.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Camila G. D. P. Morais, Jilliano B. Silva, Josue S. Almeida, Rafaela R. Oliveira, Marcio D. S. Araujo, Glauber J. T. Fernandes, Regina C. O. B. Delgado, Ana C. F. Coriolano, Valter J. Fernandes Jr, Antonio S. Araujo
Summary: Catalytic distillation is a technology that combines a heterogeneous catalytic reaction and the separation of reactants and products via distillation in a single reactor/distillation system. This process combines catalysis, kinetics, and mass transfer to obtain more selective products. The advantages of catalytic distillation are energy savings, low waste streams, catalyst longevity, higher conversion, and product selectivity; these properties are interesting for petrochemical and petroleum industries.
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, Physical
Amr A. Ibrahim, Reda S. Salama, Sohier A. El-Hakam, Abdelrahman S. Khder, Awad I. Ahmed
Summary: Zirconia-based mesoporous MCM-41 loaded with varying amounts of sulfate were successfully prepared and characterized using various methods. The increase in sulfate content led to an increase in lattice cell parameter and the samples exhibited a large surface area with uniform pore diameter distribution. The materials showed good catalytic activity and high adsorption capacity for methylene blue.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(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
Engineering, Environmental
Lurong Ge, Yaohui Feng, Yanjun Dai, Ruzhu Wang, Tianshu Ge
Summary: This study develops a composite sorbent with excellent water sorption performance and long-term stability by encapsulating an ionic liquid in ordered mesoporous MCM-41. The composite sorbent exhibits fast sorption rate, low temperature-driven regeneration potential, and no corrosion to metal components.
CHEMICAL ENGINEERING JOURNAL
(2023)
