Article
Chemistry, Multidisciplinary
Peng Wang, Yaxin Wang, Helfried Neumann, Matthias Beller
Summary: A general rhodium-catalyzed selective carbonylative coupling method is presented for the first time, where unactivated alkyl chlorides are coupled with aliphatic alcohols or phenols to form esters. The addition of sodium iodide plays a crucial role in providing more active alkyl iodides in situ. The Rh(i)-DPPP catalyst system enables the preparation of diverse esters, including industrially relevant acetates, in high yields.
Article
Chemistry, Inorganic & Nuclear
Xiaorui Yan, Lele Chen, Haisheng Wei, Tiantian Liu, Kairui Li, Jing Li
Summary: In this study, a phosphine ligand was successfully confined in ZIF-8 material and coordinated with Rh metal to develop an efficient and stable Rh-based catalyst. The catalyst reduced at 300 degrees C under H-2 atmosphere exhibited better stability than other reducing agents. This work reveals an effective strategy for synthesizing stable catalysts.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiaorui Yan, Lele Chen, Haisheng Wei, Tiantian Liu, Kairui Li, Jing Li
Summary: This study successfully developed an efficient and stable Rh-based catalyst by confining active Rh species, and the strong interaction between Rh metal and P is the main reason for the stability of the catalyst.
DALTON TRANSACTIONS
(2023)
Article
Engineering, Chemical
Yuntao He, Xiaxin Guo, Luyang Qiao, Runping Ye, Shanshan Zong, Xinyi Cao, Jiankai Cheng, Zhangfeng Zhou, Yuangen Yao
Summary: Rh complexes have shown great potential as catalysts for formaldehyde hydroformylation due to their ability to achieve high yields of glycolaldehyde under mild conditions. However, Rh-based heterogeneous catalysts often have limited activity in formaldehyde hydroformylation. This study developed four different supports loaded with Rh and found that silica-based catalysts exhibited higher conversion and selectivity for glycolaldehyde compared to Rh/Al2O3, attributed to the presence of more oxidized rhodium species and stronger metal support interactions. Furthermore, adjusting the structure of the silica support led to the synthesis of SBA-15 and HMS zeolites, which further improved the selectivity and yield of glycolaldehyde due to their larger surface area, suitable pore structures, and higher dispersion of Rh species.
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Applied
Yue Zhang, Li Wang, Nan Wang, Guohua Gao, Zhiyong Pan, Baoning Zong
Summary: Monodispersed mesoporous SBA-15 silica was synthesized by adding n-decane to conventional synthesis recipe, and the Pd catalyst prepared on it exhibited superior catalytic performance in 2-alkyl-anthraquinone hydrogenation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Andrii Fedorchuk, Magdalena Laskowska, Grzegorz Cempura, Adam Kruk, Anna Nowak, Mateusz Dulski, Malgorzata Kac, Oleksandr Pastukh, Piotr M. Zielinski, Jerzy Kubacki, Lukasz Laskowski
Summary: In this study, a novel nanocomposite material was synthesized by functionalizing the SBA-15 silica matrix with anchored iron phosphonate molecules and conducting thermal treatment. The obtained materials are of great interest for their unique structure and potential applications in catalysis, adsorption, and non-linear optics. Various characterization techniques were used to analyze the obtained materials.
Article
Chemistry, Physical
Carolin Rieg, Manuel Kirchhof, Katrin Gugeler, Ann-Katrin Beurer, Lukas Stein, Klaus Dirnberger, Wolfgang Frey, Johanna R. R. Bruckner, Yvonne Traa, Johannes Kaestner, Sabine Ludwigs, Sabine Laschat, Michael Dyballa
Summary: We developed a method to quantify the accessible Rh complexes in SBA-15 mesopores via solid state NMR spectroscopy. By combining P-31 MAS NMR and ICP-OES, the P/Rh ratio was determined, revealing that only up to 39% of the immobilized Rh complexes were accessible. With this methodology, the accessibility and spatial distribution of immobilized molecular catalysts can be evaluated quantitatively for the first time.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ann-Katrin Beurer, Manuel Kirchhof, Johanna R. Bruckner, Wolfgang Frey, Angelika Baro, Michael Dyballa, Frank Giesselmann, Sabine Laschat, Yvonne Traa
Summary: The study introduces a method for selectively functionalizing the mesoporous surface, which has been successfully applied to the asymmetric Rh-catalyzed 1,2-addition reaction. The results demonstrate that the catalyst selectively immobilized in the mesopores shows better catalytic performance, further advancing the field of catalysis.
Article
Engineering, Chemical
Lei Zhou, Lingling Peng, Xingbang Hu
Summary: In this study, a highly active SBA-15-CAAC-Ir immobilized catalyst was successfully prepared, which exhibited efficient catalytic activity for the hydrogenation of CO2 to formate. The catalyst maintained excellent catalytic performance even after multiple cycles.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
R. T. Silva, A. E. B. Lima, M. J. S. Costa, M. V. R. Ferreira, R. S. Santos, V. P. S. Caldeira, A. G. D. Santos, F. A. Martins, G. E. Luz Jr
Summary: The photodegradation of 2,4-dichlorophenoxyacetic acid (2,4-D) was investigated using TiO2 nanoparticles supported on SBA-15 molecular sieve obtained by the in situ anchoring (ISA) method. The TiO2/SBA-15 catalyst showed high efficiency in degrading 2,4-D herbicide, and its photocatalytic activity did not significantly decrease after multiple uses.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Lei Zhou, Lingling Peng, Jialan Ji, Wentao Ma, Jinling Hu, Youting Wu, Jiao Geng, Xingbang Hu
Summary: In recent years, copper-based catalysts have been widely studied for the hydrogenation of CO2 to formic acid or formate. However, the activity of copper-based catalysts is still not satisfactory. In this study, an efficient and recyclable catalyst, SBA-15-CAAC-Cu, was synthesized for the hydrogenation of CO2 to formate. The catalyst showed high activity and excellent recyclability.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Physical
Yanji Zhang, Jicheng Zhou, Fei Wang, Mengdie Lv, Kai Li
Summary: In this study, a novel Pt/@-ZrO2/SBA-15 catalyst was reported, which was fabricated by anchoring Pt nanoparticles on a mono-layer dispersed ZrO2 film layer coated in SBA-15 support via a photochemical route. This catalyst exhibited remarkable catalytic activity in selective hydrogenation reactions, achieving high conversion with high selectivity. The synergistic catalysis of Pt nanoparticles and monolayer dispersed ZrO2 played a crucial role in achieving high efficiency selective hydrogenation.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Organic
Vivek Srivastava
Summary: In this study, amine-functionalized SBA-15 mesoporous silica-supported Nickel nanoparticles (Ni NPs) were successfully synthesized and their potential for catalyzing the CO2 transition to formic acid via high-pressure hydrogenation reaction was investigated. The results demonstrated a strong metal-support interaction between the Ni NPs and the mesoporous silica substrate, indicating the suitability of the catalyst for the CO2 conversion reaction. The catalyst CAT$Ni-1 exhibited superior catalytic activity and recyclability compared to CAT$Ni-2 and CAT$Ni-3, suggesting the synthesized Ni NP catalysts have significant potential for large-scale CO2 conversion.
LETTERS IN ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
D. Sanz-Villanueva, D. Alique, A. J. Vizcaino, R. Sanz, J. A. Calles
Summary: By doping Pd into the SBA-15 intermediate layer in composite membranes, thermal and mechanical resistances were improved, cracks were avoided, and hydrogen permeance and separation factor were increased.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Biomaterials
Christian Bensing, Marija Mojic, Mirna Bulatovic, David Edeler, Damian Perez-Quintanilla, Santiago Gomez-Ruiz, Danijela Maksimovic-Ivanic, Sanja Mijatovic, Goran N. Kaluderovic
Summary: This study investigates the cytotoxicity of nanostructured SBA-15-based materials functionalized with tetraorganotin(IV) metallodrugs against cancer cells. The utilization of mesoporous silica as a drug vehicle improves the cytotoxic effectiveness of metal-based drugs. Material SBA-15 similar to Cl vertical bar Ph3Sn(CH2)(8)OH exhibits the strongest cytotoxicity among all tested systems.
BIOMATERIALS ADVANCES
(2022)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)