Article
Chemistry, Multidisciplinary
Thaylan Pinheiro Araujo, Adrian H. Hergesell, Dario Faust-Akl, Simon Buchele, Joseph A. Stewart, Cecilia Mondelli, Javier Perez-Ramirez
Summary: This study found that copper-based systems are more active in CO hydrogenation and suitable for methanol production using CO; ZnO-ZrO2 exhibits strong resistance to deactivation in CO2-rich streams, showing good reversibility; the research emphasizes the importance of catalyst and process design in advancing CO2 utilization technologies.
Review
Chemistry, Multidisciplinary
Shuai Zhang, Sandra Elizabeth Saji, Zongyou Yin, Hongbo Zhang, Yaping Du, Chun-Hua Yan
Summary: Alloying is an efficient methodology to improve the performance of metallic catalysts, rare-earth metal compounds can integrate the unique orbital structure and catalytic behavior of rare earth elements; these alloys provide an opportunity to tailor electronic properties, tune charged carrier transport, and enhance surface reactivity.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Ao Song, Shiyuan Liu, Mingchun Wang, Yao Lu, Rongzhou Wang, Ling-Bao Xing
Summary: This article reports a method for the synthesis of beta-methylated secondary alcohols from non-methylated ketones using a Cp*Ir complex and a functional ligand. The method provides a highly efficient route to beta-methylated secondary alcohols under mild reaction conditions.
JOURNAL OF CATALYSIS
(2022)
Review
Chemistry, Inorganic & Nuclear
Daniele Paderni, Luca Giorgi, Vieri Fusi, Mauro Formica, Gianluca Ambrosi, Mauro Micheloni
Summary: Rare earth elements (REEs) are a group of elements playing critical roles in modern applications, with scientists showing strong interests in their new applications. However, the development of chemical sensors suitable for selective sensing of REE ions remains a challenging task due to their complicated coordination properties.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Materials Science, Multidisciplinary
Andrew Wang, Athanasios A. Tountas, Alan Aspuru-Guzik, Geoffrey A. Ozin
Summary: This study aims to investigate the adsorption, activation, reaction, and desorption steps of CO2-H2 on metal oxide catalysts from the perspective of surface coordination materials chemistry. The goal is to improve the efficiency of methanol synthesis and explore the potential of using light instead of heat to drive the reaction.
Review
Environmental Sciences
Trinath Biswal, Krushna Prasad Shadangi, Prakash Kumar Sarangi, Rajesh K. Srivastava
Summary: This review provides an explanation of the various methods for converting carbon dioxide (CO2) to methanol, including the use of homogeneous and heterogeneous catalysts, as well as hydrogenation, photochemical, electrochemical, and photoelectrochemical techniques. The article emphasizes the importance of proper catalyst selection and method development to break the stable CO2 bond and produce valuable chemicals like methanol.
Article
Chemistry, Physical
Zhaolun Cui, Shengyan Meng, Yanhui Yi, Amin Jafarzadeh, Shangkun Li, Erik Cornelis Neyts, Yanpeng Hao, Licheng Li, Xiaoxing Zhang, Xinkui Wang, Annemie Bogaerts
Summary: Plasma-catalytic CO2 hydrogenation for methanol production was studied using a combination of experimental and computational methods. Results showed a synergistic effect between the Cu/gamma-Al2O3 catalyst and CO2/H2 plasma, with enhanced methanol selectivity achieved through the addition of H2O. Computational calculations revealed the bifunctional effect of Cu-13/gamma-Al2O3 interface sites in activating CO2 molecules and promoting hydrogenation of key intermediates. This study provides new insights into the mechanism of CO2 hydrogenation through plasma catalysis, and offers inspiration for the conversion of other small molecules using supported-metal clusters.
Article
Multidisciplinary Sciences
Yuchao Chai, Bin Qin, Bonan Li, Weili Dai, Guangjun Wu, Naijia Guan, Landong Li
Summary: This study reports a method for selectively hydrogenating carbon dioxide to methanol using renewable hydrogen sources, which is both environmentally friendly and carbon neutral. By designing faujasite-encaged mononuclear Cu centers, stable methanol production and selectivity were achieved. This work provides a clear example of structure-activity relationship in catalysis and highlights the advantages of zeolite catalysis in complex chemical transformations.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Multidisciplinary
Thomas Diehl, Patrick Lanzerath, Giancarlo Francio, Walter Leitner
Summary: This study achieved the catalytic conversion of CO2 and hydrogen to methanol using a self-separating multiphasic system. The catalyst phase, composed of the tailor-made complex [Ru(CO)ClH(MACHO-C-12)], demonstrated effective recycling and separate phase formation for product isolation and catalyst separation.
Article
Environmental Sciences
Mathieu Desrosiers, Guillaume Pelletier, Denis Dieme, Jonathan Cote, Malek Jomaa, Andy Nong, Michele Bouchard
Summary: Toxicokinetic models are developed for four rare earth elements to establish biomonitoring equivalents (BE) as biological guidance values, based on experimental kinetic data showing disappearance from blood, accumulation in liver, and excretion mainly through feces. The model with 19 compartments fits well with experimental data and can be used for other REEs modeling. BEs of Pr and Nd were derived from provisional RfD, allowing for rapid screening and risk assessments in different populations.
ENVIRONMENT INTERNATIONAL
(2021)
Review
Chemistry, Organic
Alexis Prieto, Florian Jaroschik
Summary: Photoredox catalysis offers a new paradigm for synthesizing a wide range of chemical bonds using abundant reagents under mild conditions. The use of rare-earth complexes as redox-active centers or redox-neutral Lewis acids has emerged as a promising strategy in the field, facilitating photocatalytic transformations.
CURRENT ORGANIC CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Hayk H. Nersisyan, Wan Bae Kim, Woo Seok Choi, Hwa-Young Woo, Soon-Jik Hong, Jong Hyeon Lee
Summary: This study investigates the formation of two-dimensional REB6 nanostructures from a specific reaction mixture, resulting in nanosheets with small thickness and large surface area that can be used as catalysts.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Aman Ullah, Yanet Rodriguez Herrero
Summary: The use of phenyl polyhedral oligomeric silsesquioxane (POSS) as a hydrophobic support for Cu/ZnO catalyst enables direct CO2 hydrogenation to methanol. The CuZnPOSS nanoparticles exhibit high selectivity and stability, with a yield of 3.8% methanol and a conversion of 4.4% CO2 within 18 hours. The use of microbatch reactors allows for rapid and effective catalyst screening.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Amarajothi Dhakshinamoorthy, Sergio Navalon, Ana Primo, Hermenegildo Garcia
Summary: This article provides a brief summary of the advantages of metal-organic frameworks (MOFs) as catalysts in liquid-phase and gas-phase reactions, particularly in the selective CO2 hydrogenation to CH3OH. It highlights the temperature compatibility window for MOFs in the CO2 hydrogenation process and organizes the existing literature based on the role of MOFs as active sites or support for metal nanoparticles. The flexibility in design and synthesis of MOFs to enhance catalytic activity, as well as the influence of structural defects and material crystallinity, are emphasized.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Tobias Wagener, Lukas Lueckemeier, Constantin G. Daniliuc, Frank Glorius
Summary: This study successfully demonstrates the synthesis of sought-after, enantioenriched delta-lactams through an interrupted hydrogenation mechanism using oxazolidinone-substituted pyridines and water.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Multidisciplinary
Runping Ye, Yuan-Yuan Huang, Chong-Chong Chen, Yuan-Gen Yao, Maohong Fan, Zhangfeng Zhou
Summary: This article reviews various approaches to synthesize ethylene glycol (EG) from CO2 and its derivatives under mild conditions, including thermocatalysis, photocatalysis, and electrocatalysis. The coal-to-ethylene glycol technology, a mature thermal catalytic method, still faces challenges in industrialization. The recent progress in the development of coal-to-ethylene glycol technology is discussed, with a focus on achieving EG synthesis under mild conditions through strategies such as doping promoters, support modification, and catalyst design. The emerging technological progress of photocatalytic and electrocatalytic EG synthesis under ambient conditions is also introduced, highlighting the need to address issues for large-scale production. Future development issues and prospects for ambient EG synthesis using different catalytic routes are proposed.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Lulu Ping, Yuan Zhang, Baojun Wang, Maohong Fan, Lixia Ling, Riguang Zhang
Summary: Based on the advantages of ethane oxidative dehydrogenation and the challenge of low ethylene selectivity, chemical looping oxidative dehydrogenation (CL-ODH) over the IrO2 catalyst was studied. The study revealed that both S-IrO2 and R-IrO2 states exist for the IrO2 catalyst in the dehydrogenation and regeneration processes, and the optimal reaction conditions were determined. This research expands the understanding of ethane CL-ODH over metal oxide catalysts and provides valuable information for process optimization and catalyst development.
Article
Nanoscience & Nanotechnology
Yuan Zhang, Baojun Wang, Maohong Fan, Lixia Ling, Riguang Zhang
Summary: In this study, a strategy to improve the catalytic performance of Pt-Sn alloy catalysts in ethane dehydrogenation (EDH) is proposed by engineering the shell surface structure and thickness. Density functional theory (DFT) calculations and kinetic Monte Carlo (kMC) simulations are used to understand the influences of catalyst surface structure, temperature, and reactant partial pressures. The results demonstrate that Pt@Pt3Sn catalysts generally have higher C2H4(g) activity and lower selectivity compared to Pt3Sn@Pt catalysts, due to their unique surface geometrical and electronic properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Lulu Chai, Jinlu Song, Yanzhi Sun, Xiaoguang Liu, Xifei Li, Maohong Fan, Junqing Pan, Xueliang Sun
Summary: This study proposes a smart dual-oxygen electrode for high-specific-energy batteries, which addresses the issues of energy efficiency decay, wide charge-discharge gap, and catalyst peeling. The electrode consists of a switch control module, OER and ORR catalysis layers, and an ion conductive | electronic insulating membrane. The electrode shows an ultralow energy efficiency decay rate and enables a high energy efficiency in zinc-air batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Wantong Zhao, Xuebai Lan, Baojun Wang, Maohong Fan, Riguang Zhang
Summary: In this study, the inverse Mo6C4/Cu catalyst is modeled and predicted to promote C2 oxygenates formation in syngas transformation. The results show that the inverse Mo6C4/Cu catalyst greatly improves catalytic performance and facilitates C2 oxygenate production compared to previous catalysts. This is attributed to the synergistic effect between Mo6C4 cluster with Cu catalyst, which easily activates CO to produce CH2 monomer and facilitates CO insertion into CH2 to CH2CO.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Kunpeng Li, Hui Hu, Maohong Fan, Mi Zhang, Zhongming Chen, Ruibin Lv, Hao Huang
Summary: An advanced oxidation process (AOPs) using Fe(II) activated peracetic acid (PAA) was investigated for the simultaneous removal of SO2 and NO from flue gas. The maximum removal efficiencies obtained were 92.3% for NO and 99.5% for SO2 under optimal conditions. Reactive oxidizing species and organic radicals were generated in the Fe(II)/PAA system, with organic radicals confirmed to be the major factors affecting NO oxidation. The main products of SO2 and NO removal were identified as SO42- and NO3-.
Review
Chemistry, Multidisciplinary
Tongtong Wang, Zhe Chen, Weibo Gong, Fei Xu, Xin Song, Xin He, Maohong Fan
Summary: Carbon nanofibers (CNFs) have diverse applications in sensor manufacturing, electrochemical catalysis, and energy storage. Electrospinning is a powerful commercial large-scale production technique for CNFs due to its simplicity and efficiency. This paper discusses the working theory of manufacturing electrospun CNFs, current efforts in upgrading CNF properties, and the corresponding applications. Future development of CNFs is also discussed.
Article
Chemistry, Physical
Yueyue Wu, Xinyi Guo, Xiufeng Shi, Baojun Wang, Maohong Fan, Riguang Zhang
Summary: This study investigates the catalytic performance of a series of S-modified PdM IMCs with different M types (Cu, Ag and Au) and ratios (1: 1, 3: 1 and 1: 3) in C2H2 semi-hydrogenation using DFT calculations and microkinetic modeling. The results show that the catalytic performance strongly depends on the space region of metal active site and the electronic properties induced by S atoms and the M type and ratio. Only S/Pd1Ag1 and S/Pd1Au1 exhibit higher H2 dissociation activity, C2H4 selectivity and production activity, and can effectively inhibit the formation of green oil.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Weixiang Zhang, Lina Zhang, Sijia Pei, Jiarui Wang, Dawei Liu, Xiaoxun Ma, Maohong Fan, Long Xu
Summary: One of the most significant topics in chemical looping reforming technology is the design and preparation of appropriate oxygen carriers with high reactivity and excellent stability. This study focuses on the chemical looping reforming of methane using cobalt-doped Ce-based oxygen carriers synthesized via the solution combustion method with the assistance of coconut shell. The introduction of cobalt decreases the crystallite size, increases oxygen vacancy concentration and lattice oxygen mobility, and the addition of coconut shell further enhances these positive changes and the interaction between Ce and Co.
Editorial Material
Multidisciplinary Sciences
Jie Ding, Runping Ye, Yanghe Fu, Yiming He, Ye Wu, Yulong Zhang, Qin Zhong, Harold H. Kung, Maohong Fan
Summary: Urea, a crucial nitrogen fertilizer, plays a vital role in meeting global food demand. However, its current production method is energy-intensive and environmentally unfriendly. In this commentary article, the authors propose strategies to address and overcome these challenges.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Zhao Sun, Shufan Yu, Sam Toan, Rufat Abiev, Maohong Fan, Zhiqiang Sun
Summary: In this study, CuCr2O4-based catalytic oxygen carriers were designed for low-temperature methanol reforming. The activation of methanol at relatively low temperatures was achieved through the reinforcement of the Cu-O-Cr structure and the induction of highly reactive lattice oxygen. The hydrogen production rate was significantly increased by 53.2% with the application of CuCr2O4-based catalytic oxygen carriers. Furthermore, the Cu-O-Cr structure demonstrated satisfactory cyclic stability.
Article
Energy & Fuels
Chengda Li, Yueli Wen, Bin Wang, Maohong Fan, Wenlong Liu, Zheng Cui, Wei Huang
Summary: Activation and desorption of hydrogen in toluene methyl is the rate-limiting step for side-chain alkylation of toluene with methanol. In this study, two dehydrogenation strategies were employed to enhance catalytic performance by introducing Cu as a dehydrogenation component in PAl-NaX catalyst and adjusting the acid-base properties through varying NaOH loading. The relationship between the percentage of acid-base sites, low valence Cu species, and catalytic performance was investigated using various characterization techniques and ternary regression analysis. The results showed that Cu, especially low valence Cu species, promoted the selectivity of side-chain alkylation products to some extent, but base sites played a more critical role in enhancing selectivity.
Article
Chemistry, Physical
Lulu Ping, Yuan Zhang, Baojun Wang, Maohong Fan, Lixia Ling, Riguang Zhang
Summary: Based on favorable thermodynamics and coking resistance, chemical looping oxidative dehydrogenation (CL-ODH) of ethane over IrO2 catalyst was studied. Two extreme states of the IrO2 surface structure, S-IrO2 and R-IrO2, were considered. It was found that the mechanisms of ethane dehydrogenation over S-IrO2 and R-IrO2 catalysts were different. The present study contributes to the understanding of ethane CL-ODH over metal oxide catalysts and provides valuable insights for process optimization and catalyst development.
Article
Chemistry, Multidisciplinary
Runping Ye, Lixuan Ma, Xiaoling Hong, Tomas Ramirez Reina, Wenhao Luo, Liqun Kang, Gang Feng, Rongbin Zhang, Maohong Fan, Riguang Zhang, Jian Liu
Summary: This study presents a strategy to enhance the low-temperature CO2 activation through regulating the local electron density of active sites. An optimized Ni/ZrO2 catalyst exhibits excellent performance for CO2 methanation, with high CO2 conversion, CH4 selectivity, and stability, making it one of the best Ni-based catalysts for CO2 methanation to date.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Xuebai Lan, Mifeng Xue, Baojun Wang, Maohong Fan, Riguang Zhang
Summary: This study investigates the performance of diatomic metal catalysts in the semi-hydrogenation of C2H2 by constructing different types of DACs and tuning their coordination environments. The results show that CoCu@N6V4-11, CoPd@N6V4-11, CoNi@N6V4-11, and CoPt@N6V4-11 DACs exhibit superior C2H4 selectivity, formation activity, and stability. Introducing a second metal can significantly improve C2H4 selectivity while maintaining high C2H4 formation activity.
APPLIED SURFACE SCIENCE
(2023)