Article
Engineering, Marine
Kati Lehtoranta, Paivi Koponen, Hannu Vesala, Kauko Kallinen, Teuvo Maunula
Summary: The study shows that using methane oxidation catalyst (MOC) can effectively reduce methane slip emissions in LNG ships. The use of a special sulfur trap can protect MOC against sulfur poisoning to some extent, and regeneration done once a day can recover the efficiency of MOC.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Wenxin Xu, Zunhua Zhang, Yong Huang, Hang Qian, Gesheng Li
Summary: Three-dimensional mesoscale models of the fixed bed packed with different particle shapes were constructed to investigate the effects of particle shape on flow heat transfer and catalytic reforming process in the exhaust reformer. It was found that the fixed bed packed with 1-hole spheres had the highest methane conversion, hydrogen yield per unit pressure drop, and the most uniform flow field. The optimal operating conditions for the exhaust reformer were determined as M/O of 2, S/M of 1, and GHSV of 8000 h-1, resulting in a peak hydrogen production of 24.4%.
Article
Materials Science, Multidisciplinary
Tamara S. Moraes, Vanderlei S. Bergamaschi, Joao C. Ferreira, Estevam Spinace
Summary: A core-shell catalyst was tested for ethanol steam reforming reaction under low-temperature conditions, showing excellent activity and high coke inhibition capacity compared to other catalysts.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Yuxia Ma, Yuyao Ma, Jiajie Li, Zhengmao Ye, Xun Hu, Dehua Dong
Summary: This study investigates the addition of La2O3 into Ni/Al2O3 catalysts and the formation of LaAlO3 perovskite, showing high catalytic performance in methane partial oxidation reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Gianni Caravaggio, Lioudmila Nossova, Matthew J. Turnbull
Summary: The NiMg catalysts exhibited good activity for complete methane oxidation, with Ni9Mg showing the highest performance. Ni9Mg, as a promising low-cost alternative to PGM-based catalysts, achieved approximately 94% methane conversion after 40 hours, outperforming the Pd-based reference catalyst.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Byeong Jun Cha, Ji Yoon Choi, Soong Yeon Kim, Young Dok Kim
Summary: The combination of a pre-filter and a conventional catalytic converter is effective in reducing cold-start emissions. Using CVD to load catalytically active Fe species on H-ZSM-5 zeolite enhances the oxidation activity of acetaldehyde, ultimately improving the catalytic conversion efficiency of exhaust purification systems.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Dong Gun Oh, Jaekyoung Lee, Eunseok Kim, Eun Jeong Jang, Ji Man Kim, Ja Hun Kwak
Summary: The study shows that Pd/SiO2 can be an active and durable catalyst for CH4 oxidation with higher activity than Pd/Al2O3 through simple reductive regeneration. It suggests that the deactivation of Pd/SiO2 mainly comes from the blockage of the Pd/PdO surface by the SiO2 overlayer formed during hydrothermal aging.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Environmental Sciences
Zhanfei He, Yiting Xu, Yinghong Zhu, Jieni Feng, Daoyong Zhang, Xiangliang Pan
Summary: Ferrihydrite acts as a better electron acceptor for long-term Fe-AOM cultivation, while EDTA-Fe(III) can stimulate Fe-AOM activity in the short term but restricts long-term activity increase.
Article
Automation & Control Systems
Tiexiong Huang, Guangdi Hu, Zhongwei Meng, Dongjian Zeng
Summary: This study proposes an intuitive and effective control strategy that combines IMC design with ESPO for controlling the DOC outlet gas temperature in the thermal regeneration process of the diesel particulate filter. Experimental validation and simulation results show that introducing ESPO can significantly reduce recovery time and accurately provide set-point tracking in real applications.
CONTROL ENGINEERING PRACTICE
(2021)
Article
Soil Science
Zhanfei He, Yinghong Zhu, Jieni Feng, Qingqing Ji, Xin Chen, Xiangliang Pan
Summary: Fe-AOM occurs in paddy soil due to a suitable ecological environment, with different iron minerals showing varying effects on Fe-AOM. Goethite-dependent AOM activity significantly increased after long-term cultivation, while ferrihydrite promoted Fe-AOM but increased methane emissions. This indicates that goethite-dependent AOM is a crucial sink in the global methane cycle.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
Li-shuang Duan, Pi-qiang Tan, Jing-tuo Liu, Yang Liu, Ying-jie Chen, Di-ming Lou, Zhi-yuan Hu
Summary: The electrically heated catalyst (EHC) can increase the exhaust gas temperature and reduce emissions from diesel engines during cold starts. This study investigates the influence of EHC on exhaust gas temperature and emission characteristics under different cold start conditions. It was found that the EHC shortened the time required to reach the desired temperature and increased the conversion efficiency of CO and HC, but it also resulted in an increase in particulate matter concentration in the exhaust gas.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Chemistry, Multidisciplinary
Ashin A. Sunny, Qichang Meng, Sonu Kumar, Rushikesh Joshi, Liang-Shih Fan
Summary: Climate change presents unprecedented challenges and calls for innovative solutions. Chemical looping, with its CO2 capture capabilities and versatile applications, has attracted attention as a promising strategy. Nanoscaled carriers have shown promise in enhancing chemical looping processes, particularly in CO2 utilization schemes. However, there are still challenges and prospects that require further research.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Physical
Jiseok Park, Dongjoon Kim, Sang Woo Byun, Hyeonwoo Shin, Yanggeun Ju, Haehyun Min, Young Jin Kim, Iljeong Heo, Melanie J. Hazlett, Minkyu Kim, Sung Bong Kang
Summary: This study investigates the effect of different Pd/Pt ratios on the catalytic methane oxidation reaction. It is found that under dry feed conditions, Pd-only catalyst exhibits the best performance, while under wet feed conditions containing water vapor, bimetallic Pd/Pt catalysts with a small fraction of Pt show superior catalytic performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Review
Chemistry, Multidisciplinary
Roisin Commane, Luke D. Schiferl
Summary: The article discusses the relationship between urban air pollution and CO2 emissions, highlighting the impact of policies to reduce CO2 emissions on air quality in cities. Key recommendations include prioritizing the removal of carbon-fuel combustion, electrifying transportation, removing sulfur from fuels, and increasing the density of CO2 concentration measurements in cities.
Article
Engineering, Environmental
Yaeun Seo, Min Woo Lee, Hyun Jae Kim, Jin Woo Choung, ChangHo Jung, Chang Hwan Kim, Kwan-Young Lee
Summary: The study showed that doping with appropriate amounts of Ag can increase the oxygen storage capacity of the catalyst and form active Pd-0 species, leading to improved catalytic activity for the oxidation of CO and C3H6.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)