Article
Chemistry, Inorganic & Nuclear
Zan Zhang, Yuan Liu, Jinfeng Du, Yisen Jiang, Zhaoxu Wang, Ruirui Yun, Baishu Zheng
Summary: In this study, a new type of non-noble metal catalyst was developed using cobalt nanoparticles encapsulated in porous N-doped carbon nanotubes. The catalyst exhibited high efficiency, low cost, and excellent durability, making it suitable for selective hydrogenation reactions of nitro compounds.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ruirui Yun, Wei Zhang, Zan Zhang, Xiaoxuan Zhang, Zhaoxu Wang, Shizhong Luo
Summary: In this study, a series of core-shell catalysts Cu@NC/PC were designed and synthesized for the first time using a functional polymer assistant strategy. Cu@NC/PC-900-2 exhibited excellent catalytic performance in the hydrogenation of nitroarenes, attributed to its large BET surface area and uniformly dispersed metal sites. The honeycomb-like structure facilitated mass transfer and active site exposure. Both experimental and theoretical results indicated that the N-doping sites promoted the adsorption of nitro groups, resulting in high activity and selectivity under low H-2 pressure and temperature. Importantly, the catalyst also achieved high conversion in gram-scale catalytic processes, highlighting its practical application potential.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Sabyuk Yang, Ahra Cho, Jin Hee Cho, Byeong Moon Kim
Summary: A new catalytic N-formylation of secondary amines using AuPd-Fe3O4 at room temperature is reported in this study, showing higher efficiency and recyclability. The bimetallic catalyst consisting of Au and Pd promotes the reaction more efficiently than using each metal separately.
Article
Chemistry, Multidisciplinary
Xiaochun Liu, Chaoyue Wang, Jiaolong Meng, Xiaodong Yue, Qingyun Wang, Jiatian Lu, Junke Wang, Xicun Wang, Yingxiao Zong, Xuefeng Jiang
Summary: This study successfully synthesized a mesoporous catalyst with single-atomic cobalt active sites, and demonstrated its excellent performance and potential applications in the hydrogenation of nitroarenes.
CHINESE CHEMICAL LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Ashish Kumar Kar, Arjun Behera, Rajendra Srivastava
Summary: The photocatalytic reductive N-formylation of nitroarenes was successfully achieved using a Pd nanoparticle-embedded nanostructured Ti-MOF catalyst under sunlight or household white light-emitting diode (LED). The high photocatalytic performance of the catalyst can be attributed to the direct contact between the Pd nanoparticles and the MOF, abundant catalytically active sites, and superior electrical conductivity. The findings of this study demonstrate the economic and sustainable catalyst design and may inspire the development of similar catalytic protocols for other industrially important chemicals.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sho Yamaguchi, Shu Fujita, Kiyotaka Nakajima, Seiji Yamazoe, Jun Yamasaki, Tomoo Mizugaki, Takato Mitsudome
Summary: The study presents a non-noble metal catalyst, nickel phosphide nanoparticle supported on hydrotalcite, which effectively catalyzes the selective hydrogenation of d-glucose to d-sorbitol in water, with high yield and over 99% selectivity under mild conditions. This nano-Ni2P/HT catalyst shows superior activity compared to other non-noble metal catalysts, can operate at ambient temperature under just 1 bar of H-2, and is stable and reusable, providing a cheap, green, and sustainable route for the production of d-sorbitol.
Article
Chemistry, Multidisciplinary
Shuang-Shuang Ma, Rui Sun, Zi-Heng Zhang, Peng-Xin Guan, Jin-Qing Lin, Chun-Shan Li, Bao-Hua Xu
Summary: A novel half-sandwich phosphinesulfonate cobaltic complex was prepared and used for the chemoselective N,N-dimethylation of nitroaromatics. The catalytic activity could be modulated by using specific hydrosilanes.
Article
Chemistry, Multidisciplinary
Chuncheng Lin, Weihao Wan, Xueting Wei, Jinzhu Chen
Summary: Co nanoparticles encapsulated in N-doped carbon nanotubes (Co@NC900) have been investigated as a potential substitute for precious Pt-group catalysts in hydrogenative heterocyclization reactions. Co@NC900 demonstrates efficient catalytic activity for the hydrogenative coupling of 2-nitroaniline to benzaldehyde, with >99% yield at ambient temperature in a single step. The catalyst is easily recoverable and recyclable, with kinetic experiments suggesting that hydrogenation is the rate-determining step, with an apparent activation energy of 41 +/- 1 kJ mol(-1). Theoretical investigations reveal the mechanism by which Co@NC900 activates both H-2 and the nitro group of 2-nitroaniline, providing insights for the green and efficient synthesis of heterocyclic compounds.
Article
Chemistry, Physical
Muhong Li, Shanyong Chen, Qike Jiang, Qingliang Chen, Xuan Wang, Yong Yan, Jian Liu, Changchang Lv, Weiping Ding, Xuefeng Guo
Summary: This study reveals several unusual generalities in the hydrogenation of nitroarenes, based on experiments with four typical Co-N-C materials derived from different methodologies, showing that the single-atom species Co-N-x are the main active sites of the Co-N-C catalysts in this process.
Letter
Engineering, Environmental
Shulin Zuo, Lilin Wang, Yan Liu, Yanzong Zhang
Summary: In recent years, researchers have focused on developing cobalt-containing composites as highly active heterogeneous catalysts for persulfate. While most studies have reported the leaching of cobalt ions during the catalytic degradation of organic pollutants, only a few have considered the contribution of dissolved cobalt ions to the degradation process. A study published in the Journal of Hazardous Materials investigated the synthesis, application, and catalytic mechanisms of cobalt-doped hydroxyapatite (Co-HAP) for the degradation of Rhodamine B (RhB). The study found that non-main catalytic mechanisms were listed and that the effect of Co-HAP was overestimated.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiuzheng Zhuang, Jianguo Liu, Shurong Zhong, Longlong Ma
Summary: In this study, an easy-to-prepare heterogeneous catalyst with multilayered graphitic shells was synthesized and found to exhibit excellent catalytic activity and selectivity in hydrogenation reactions, particularly for functionalized nitroarenes. Furthermore, the catalyst demonstrated the ability to catalyze N-methylation through tandem reactions.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2022)
Article
Chemistry, Physical
Hiroya Ishikawa, Naoki Nakatani, Sho Yamaguchi, Tomoo Mizugaki, Takato Mitsudome
Summary: We report the use of ruthenium phosphide nanoparticles (Ru2P/SiO2) as a highly active and robust catalyst for the hydrogenation of sulfur-containing nitroarenes, showing 34 times higher activity than Ru nanoparticles. Various sulfur-containing nitroarenes were successfully hydrogenated under 1 bar of H2, leading to high yields of aniline products, including valuable pharmaceutical intermediates. The study highlights the importance of the electronic and geometrical effects of P surrounding Ru species in Ru2P/SiO2 for enhanced activity and durability against sulfur poisoning.
Article
Chemistry, Physical
Hiroya Ishikawa, Naoki Nakatani, Sho Yamaguchi, Tomoo Mizugaki, Takato Mitsudome
Summary: We report the use of ruthenium phosphide nanoparticles (Ru2P/SiO2) as a highly active and robust catalyst for the hydrogenation of sulfur-containing nitroarenes, with activity 34 times higher than that obtained with Ru nanoparticles. Various sulfur-containing nitroarenes were hydrogenated under 1 bar of H2, resulting in high yields of anilines, including important pharmaceutical intermediates. The electronic and geometrical effects of P surrounding Ru species in Ru2P/SiO2 were found to be crucial for enhancing the catalyst's activity and durability against sulfur poisoning.
Article
Chemistry, Organic
Huai-Yu Wang, Xiang-Long Chen, Chun-Yan Wu, Dong-Sheng Yang, Ting Chen, An-Xin Wu
Summary: Here, we present a straightforward method for the transition-metal-free reductive N-formylation of nitroarenes. This reaction utilizes the dual role of rongalite as a reductant and a C1 building block simultaneously. Our method provides an alternative approach for the synthesis of N-aryl formamides from nitroarenes, including the formation of a C-N bond. The utility of this protocol is demonstrated through scale-up synthesis and late-stage functionalizations of complex molecules.
Article
Chemistry, Physical
Ganjun Yang, Yanan He, Chengxi Zhang, Zongyu Sun, Mengxi Han, Pai Peng, Yaning Yue, Hongxia Liu, Lei Liu, Junwen Chen, Licheng Bai, Qiang Chen
Summary: In this study, the encapsulation of platinum clusters into a zeolite catalyst showed 100% selectivity and conversion in the selective hydrogenation reaction. The shape selectivity of the zeolite prevented direct interaction between the reactants and platinum, leading to a facilitated hydrogenation process.
Article
Chemistry, Physical
Hong Zhao, Xun Sun, Dan Xu, Qian Zhu, Yangyang Zhu, Zhengping Dong
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Engineering, Chemical
Mengying Fan, Wei David Wang, Xiaoyu Wang, Yangyang Zhu, Zhengping Dong
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Chemistry, Physical
Xiao Cao, Jiaheng Qin, Galian Gou, Jing Li, Wei Wu, Shicheng Luo, Yutong Luo, Zhengping Dong, Jiantai Ma, Yu Long
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Physical
Dan Xu, Ruirui Liu, Jianfeng Li, Huacheng Zhao, Jiantai Ma, Zhengping Dong
Summary: Atomically dispersed Co catalysts with Co-N-4 active sites were successfully prepared in this study, facilitating transfer hydrogenation between nitroarenes and saturated N-heterocycles in aqueous solution. These catalysts exhibit higher TOF values compared to nanoparticle catalysts, demonstrating excellent catalytic performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Jingjing Li, Wen-Yan Zan, Hongxing Kang, Zhengping Dong, Xiaoming Zhang, Yixiong Lin, Yue-Wen Mu, Fengwei Zhang, Xian-Ming Zhang, Jing Gu
Summary: In this study, a nitrogen-rich graphene-like carbon catalyst with large surface area was fabricated via facile pyrolysis, and it was found that the C atoms next to the graphitic-N species serve as the main active species for CO2 electro-reduction reaction. This metal-free electrocatalyst achieved excellent selectivity and CO current density, comparable to state-of-the-art metal-based catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Qiang Song, Dan Xu, Wei David Wang, Jian Fang, Xun Sun, Feng Li, Boyang Li, Jinfang Kou, Hanghang Zhu, Zhengping Dong
Summary: Combining the advantages of homogeneous and heterogeneous catalysis, researchers have developed a highly dispersed Ru@HOF catalyst that can be easily recycled. The catalyst shows excellent performance in selectively catalytic hydrogenation of N-heteroarene compounds in aqueous solution.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Hong Zhao, Jian Fang, Dan Xu, Jianfeng Li, Boyang Li, Huacheng Zhao, Zhengping Dong
Summary: This study successfully prepared atomically dispersed Fe-N@HCS-T single-atom catalysts through a multistep protection strategy, demonstrating excellent activity, selectivity, stability, and recyclability. Factors such as pre-separation, anchoring effect, and support structure play crucial roles in achieving atomic dispersion.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jinfang Kou, Jian Fang, Jianfeng Li, Huacheng Zhao, Mengmeng Gao, Gong Zeng, Wei David Wang, Fengwei Zhang, Jiantai Ma, Zhengping Dong
Summary: In this study, a series of covalent organic frameworks (COFs)-anchored single-site Pt catalysts were prepared for efficient alkene hydrosilylation. The catalyst showed excellent activity and selectivity towards alkenes under solvent-free conditions, and maintained high catalytic stability during recycling experiments.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Fengwei Zhang, Peihao Liu, Jingjing Li, Hefang Guo, Han Zhang, Zehui Zhang, Zhengping Dong
Summary: Designing and synthesizing highly efficient non-noble metal-based catalysts with uniform active sites is important for understanding catalytic reaction mechanisms. In this study, a series of N-doped graphene-like carbon intercalated Co-based single/dual-atom catalysts were prepared, which exhibited atomically dispersed cobalt single atom active sites. The catalyst showed excellent activity and selectivity for oxidative esterification of benzyl alcohol and other alcohols, and displayed good structural stability and recycling durability.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jinhua Liang, Lan Wu, Zhenhua Li, Yang Liu, Nana Ding, Zhengping Dong
Summary: In this article, a novel core-shell catalyst, Pd@UiO-66-NH2@mSiO(2), was designed and demonstrated to have stable structure and high catalytic performance. The catalyst showed excellent core-shell structure, preventing aggregation and leaching of Pd nanoparticles during the reaction process. Additionally, the catalyst exhibited high efficiency, selectivity, and stability in the series reaction of amino compounds and aldehydes.
Article
Chemistry, Inorganic & Nuclear
Cheng Zhang, Tianhang Huang, Jinhua Liang, Hongzhang Cao, Yanhui Xu, Weisheng Liu, Zhengping Dong
Summary: In this study, a mesoporous CeO2-supported Au nanoparticles catalyst was constructed using a covalent organic framework (COF) material and demonstrated excellent catalytic performance in the direct oxidative esterification of benzaldehydes and benzyl alcohols. The obtained catalyst achieved the synthesis of high-value-added aromatic esters under mild and green reaction conditions. Furthermore, the catalyst was recyclable.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Lan Wu, Yang Liu, Zhenhua Li, Jinhua Liang, Lei Geng, Li Chen, Zhengping Dong
Summary: This article presents the synthesis of a supported nano-catalyst, FeA-NC, with excellent mesoporous structure and evenly distributed iron. The catalyst support contains abundant nitrogen atoms, providing sufficient anchoring points for iron and forming Fe-Nx groups, thus enhancing the catalytic activity. Additionally, the porous structure of FeA-NC improves the mass transfer of reactants and enhances reaction efficiency.
Article
Chemistry, Physical
Jianfeng Li, Wenli Suo, Yuena Huang, Minglin Chen, Haowen Ma, Chuang Liu, Huan Zhang, Kun Liang, Zhengping Dong
Summary: In this study, high-surface-area mesoporous α-Al2O3 supported PdCu bimetallic nanoparticles were successfully prepared by using a porous organic framework as the template. The obtained catalyst exhibited high selectivity and catalytic activity in the selective hydrogenation reaction, and maintained its catalytic activity after multiple cycles.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Jinjuan Zhao, Junhao Shu, Jiaxiao Wang, Honglei Yang, Zhengping Dong, Shuwen Li
Summary: The electrocatalytic performance of a Pd nanocomposite modified with ceria and d-4-amino-phenylalanine functionalized graphene nanosheets was investigated. The modified material exhibited high electrocatalytic activity, fast kinetics, and excellent antipoisoning ability for the ethanol oxidation reaction in alkaline electrolytes. The enhanced performance can be attributed to the introduction of oxygen vacancies and functional groups during the modification process.
Article
Chemistry, Multidisciplinary
Xiwei Hu, Xun Sun, Qiang Song, Yangyang Zhu, Yu Long, Zhengping Dong
