Article
Engineering, Environmental
Zaiyong Yang, Zengxi Wei, Shunxin Zhou, Bo Bao, Shuangliang Zhao, Fuzhong Gong
Summary: This study reports a new continuous DSHP process by constructing a feasible microreactor upon microfluidic chip under ambient condition, which achieved continuous production of H2O2 with high concentration. The study provides a promising on-site route to produce H2O2 in a green, safe yet ready-to-use process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jiawei Zhao, Xiaotong Zhang, Jiajia Xu, Wei Tang, Zhong Lin Wang, Feng Ru Fan
Summary: Researchers have discovered a new method to synthesize hydrogen peroxide (H2O2) by contact charging a two-phase interface, yielding stable and high production of H2O2 under room temperature and normal pressure. This finding provides an efficient way for H2O2 preparation and may encourage further exploration of contact-electrification-induced chemistry processes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Aoxue Huang, Roxanna S. Delima, Yongwook Kim, Eric W. Lees, Fraser G. L. Parlane, David J. Dvorak, Michael B. Rooney, Ryan P. Jansonius, Arthur G. Fink, Zishuai Zhang, Curtis P. Berlinguette
Summary: This study reports a method for direct hydrogenation of O(2) gas to form H2O2 using a membrane reactor without H-2 gas. Hydrogen is obtained from water source and the reactor is powered by electricity. The concentration of H(2)O(2) can be increased about 8 times by optimizing the ratio of methanol-to-water in the chemical chamber and through catalyst design. The study also demonstrates the sensitivity of H(2)O(2) concentration to its decomposition rate, which can be minimized using AuPd alloy catalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Seiji Ogo, Takeshi Yatabe, Tamon Tome, Riko Takenaka, Yoshihito Shiota, Kenji Kato
Summary: In this study, a homogeneous catalyst is used to synthesize hydrogen peroxide using H2 and O2 in water, eliminating the need for flammable H2/O2 mixtures and cocatalysts. The catalyst is capable of extracting electrons from H2, storing them for the reduction of O2, and then converting the reduced oxygen to H2O2. The catalyst exhibits the highest turnover number (TON) among all homogeneous catalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Seiji Ogo, Takeshi Yatabe, Tamon Tome, Riko Takenaka, Yoshihito Shiota, Kenji Kato
Summary: This paper reports a method for the synthesis of H2O2 using a homogeneous catalyst in water, using only H2 and O2 without flammable mixtures or cocatalysts. The catalyst can remove electrons from H2, store them for the reduction of O2, and allow the protonation of the reduced oxygen to form H2O2. The turnover number (TON) is 910 under an H2/O2 (95/5) atmosphere (1.9 MPa) for 12 hours at 23 degrees C, which is the highest among any homogeneous catalysts. Furthermore, a reaction mechanism based on two crystal structures is proposed.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Zhu Jin, Yifeng Liu, Liang Wang, Chengtao Wang, Zhiyi Wu, Qiuyan Zhu, Lingxiang Wang, Feng-Shou Xiao
Summary: In this study, AuPd nanoparticles fixed within aluminosilicate zeolite crystals were used as catalysts for the direct synthesis of H2O2 in aqueous solution. The zeolite-assisted proton transfer process catalyzed the oxygen hydrogenation to form H2O2, leading to high productivity and selectivity of H2O2 in water. The findings highlight the potential of zeolite fixed structures for designing efficient catalysts in H2O2 synthesis.
Article
Chemistry, Analytical
Fanny Girard-Sahun, Pauline Lefrancois, Vasilica Badets, Stephane Arbault, Franck Clement
Summary: This study aims to detect the in situ production of reactive oxygen and nitrogen species (RONS), specifically superoxide anion (O-2(center dot-)), in aqueous buffer solutions exposed to cold atmospheric plasmas (CAPs). The production and accumulation of RONS in the liquids were found to depend on the plasma composition, with N-2-based shieldings providing the highest concentrations of superoxide. The study provides valuable insights into the interactions between CAPs and physiological solutions for biomedical applications.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Xuan Tin Tran, Viet Le Nam Vo, Young-Min Chung
Summary: In this study, FePd catalysts supported on graphite were prepared through fast microwave-irradiated carbon nanotube growth and metal reduction, effectively solving the problem of low H2O2 yield in direct synthesis. The use of different carbon sources significantly affected the geometric and electronic characteristics of Pd on the carbon surface, and therefore influenced the catalytic activity for the DSHP reaction.
Article
Chemistry, Physical
Vanitha Reddy Naina, Sheng Wang, Dmitry Sharapa, Michael Zimmermann, Martin Haehsler, Lukas Niebl-Eibenstein, Junjun Wang, Christof Woell, Yuemin Wang, Sanjay Kumar Singh, Felix Studt, Silke Behrens
Summary: This study explores the catalytic performance of Pd nanocrystals doped with Pb in direct H2O2 synthesis. It is found that Pd3Pb cubes outperform other shapes of Pd3Pb nanocrystals and monometallic Pd catalysts in catalytic efficiency. DFT calculations and surface studies reveal that the electronic modification and lack of larger Pd ensembles in Pd3Pb cubes contribute to their superior catalytic activity in H2O2 synthesis.
Article
Chemistry, Physical
Lyudmila B. Belykh, Nikita I. Skripov, Tatyana P. Sterenchuk, Elena A. Milenkaya, Tatyana A. Kornaukhova, Fedor K. Schmidt
Summary: The behavior of palladium-phosphorus catalysts on a Na-ZSM-5 zeolite support in the direct synthesis of hydrogen peroxide under mild conditions was studied. Elemental phosphorus was found to enhance the activity and selectivity of Pd catalysts for H2O2 synthesis. The P:Pd ratio showed a direct relationship with the catalysts' activity. The influence of phosphorus on the properties of palladium catalysts in side reactions and the chemical and phase composition of Pd-P particles were investigated.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Multidisciplinary Sciences
Hong-chao Li, Qiang Wan, Congcong Du, Jiafei Zhao, Fumin Li, Ying Zhang, Yanping Zheng, Mingshu Chen, Kelvin H. L. Zhang, Jianyu Huang, Gang Fu, Sen Lin, Xiaoqing Huang, Haifeng Xiong
Summary: This study develops a two-step approach to prepare PdSn nanowire catalysts, which exhibit superior reactivity and high producibility in the synthesis of H2O2.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Physical
Geun-Ho Han, Seok-Ho Lee, Seong-Yeon Hwang, Kwan-Young Lee
Summary: Hydrogen peroxide is a simple oxidizing agent with growing use due to its environmental friendliness. The traditional method of manufacturing H2O2 through anthraquinone autoxidation (AO process) releases large amounts of organic solvents and requires significant energy. Direct synthesis of hydrogen peroxide (DSHP) offers a more sustainable solution, but faces challenges such as mass-transfer limitations and side reactions, requiring advanced technologies for catalyst development.
ADVANCED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Zaiyong Yang, Zhiheng Hao, Shunxin Zhou, Peng Xie, Zengxi Wei, Shuangliang Zhao, Fuzhong Gong
Summary: In this study, Pd-Sn alloy materials loaded in a microchannel reactor were found to exhibit high catalytic activity for the production of hydrogen peroxide, with a productivity of 3124 g kgPd-1 h-1. Doped Sn atoms on the Pd surface facilitated the release of hydrogen peroxide and slowed down the deactivation of catalysts. Theoretical calculations demonstrated the antihydrogen poisoning property of the Pd-Sn alloy surface, showing higher activity and stability compared to pure Pd catalysts. This research provides guidance on preparing high-performance and stable Pd-Sn alloy catalysts for the continuous and direct synthesis of hydrogen peroxide.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
David Kovacic, Richard J. Lewis, Caitlin M. Crombie, David J. Morgan, Thomas E. Davies, Angeles Lopez-Martin, Tian Qin, Christopher S. Allen, Jennifer. K. Edwards, Liwei Chen, Martin Skov Skjoth-Rasmussen, Xi Liu, Graham J. Hutchings
Summary: In this study, the promotive effect of Au and Sn incorporation into Pd nanoparticles was evaluated for the direct synthesis of H2O2. The introduction of secondary metal modifiers significantly enhanced the catalytic performance, with the incorporation of Sn improving Pd dispersion. The optimal PdSn catalyst achieved comparable H2O2 selectivities to state-of-the-art materials.
Article
Chemistry, Applied
Min Woo Lee, Deok Yeon Jo, Geun-Ho Han, Kwan-Young Lee
Summary: The study observed that the hydrogen peroxide selectivity of Pd/SiO2 and PdBrx/SiO2 catalysts increased with the bromine content. Density functional theory calculations confirmed that the adsorption of bromine adjusted the reaction barrier on the Pd catalyst surface, improving the selectivity of hydrogen peroxide.