Article
Chemistry, Applied
Teng-ge Mi, Yang-wen Wu, Xin-yue Zhou, Wen-tao Li, Li Zhao, Ji Liu, Qiang Lu
Summary: The study investigates the mechanisms of carbon monoxide (CO) oxidation on two SCR catalyst models and finds that the CO oxidation cycle consists of two key stages. The activation energy for CO oxidation on V2O5/TiO2 surface is lower than that on V2O5-WO3/TiO2, indicating that WO3 doping inhibits the CO oxidation.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Energy & Fuels
Mengyu Li, Yiqing Zeng, Shule Zhang, Yingjie Ren, LiFeng Deng, Qin Zhong
Summary: This study investigates the poisoning effect and mechanism of coal tar on VWTi catalyst by selecting naphthalene as the representative of coal tar. The results show that naphthalene consumes active oxygens and covers active sites, leading to the deactivation of the catalyst. The study also reveals that the poisoning effect is temperature-sensitive and the deposited naphthalene can be removed at high temperatures, allowing the regeneration of the catalyst.
Article
Engineering, Chemical
Kaiwen Ni, Yuewang Peng, Geyu Dai, Huawang Zhao, Zhiwei Huang, Xiaomin Wu, Guohua Jing, Wei Feng, Ye Yuan
Summary: In this study, ceria was used to decorate a catalyst to enhance the decomposition of ammonia bisulfate in low-temperature NH3-selective catalytic reduction. The optimal catalyst showed accelerated ABS decomposition and superior SO2 tolerance at 250 degrees Celsius. The additive CeO2 improved the catalyst's specific surface area and acidity, favoring the catalytic activity.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Energy & Fuels
Lei Deng, Zhengrong Zhu, Yikun Wang, Shihao Ma, Yan Zhang, Tao Zhang, Zhun Hu, Defu Che
Summary: This study investigates the impact of fluorides on the SCR catalyst activity and deactivation mechanism when electrolytic aluminum waste is co-fired with coal in boilers. The results show that the SCR catalytic activity drops significantly for deactivated catalyst samples by HF.
Article
Engineering, Environmental
Gongda Chen, Shangchao Xiong, Xiaoping Chen, Xuefeng Chu, Rongqiang Yin, Changdong Liu, Jianjun Chen, Junhua Li
Summary: This study analyzed deactivated honeycomb V2O5-WO3/TiO2 catalysts used for over 4000 hours in glass furnaces, revealing that the adhered substance was mainly composed of Na2SO4 and CaSO4, with arsenic penetrating to a depth of over 370 μm and inducing a three-stage penetration and deactivation process. It was found that molten and volatile As2O3 played a key role in the deactivation caused by arsenic.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Martin Elsener, Rob Jeremiah G. Nuguid, Oliver Krocher, Davide Ferri
Summary: Research has shown that formaldehyde in exhaust gases can react with NH3 to produce HCN, leading to a parasitic consumption of NH3 and a decrease in NOx conversion rate by up to 15%. Additionally, the non-reducible TiO2 support also produces moderate levels of HCN, indicating that redox sites enhance the reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Chemical
Jinlong Liu, Chenye Wang, Xingrui Wang, Huiquan Li, Chen Zhao
Summary: This study investigated the removal of iron and recovery of TiO2 support from spent SCR catalyst. It was found that iron existed on the surface and bulk structure of the spent SCR catalyst, and various methods were employed to efficiently remove iron and recover anatase TiO2 for potential reuse as support material.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Wei Li, Xuesen Du, Zhi Li, Yaqin Tao, Jingyu Xue, Yanrong Chen, Zhongqing Yang, Jingyu Ran, Vladislav Rac, Vesna Rakic
Summary: In this study, a catalyst embedded with electrothermal alloy was prepared to widen the operating temperature window of the V2O5-WO3/TiO2 catalyst. The experimental results showed that the electrothermal alloy embedded catalyst maintained superior NH3-SCR performance and high resistance to H2O in a wide temperature range. Additionally, the NH4HSO4 poisoned catalyst could be efficiently regenerated through electric heating.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Energy & Fuels
Mengxia Qing, Sheng Su, Kun Qian, Liang Liu, Zijun Yin, Song Hu, Yi Wang, Jun Xiang
Summary: This study investigated NH3 adsorption and catalytic performance of V2O5-WO3/TiO2 catalyst under high concentration of CO2 and H2O conditions, showing that CO2 and H2O mainly influence NO conversion by affecting O alpha proportion, V4+ proportion, and NH3 adsorption.
Article
Environmental Sciences
Yoo-Jin Jung, Jin-Sun Cha, Beom-Sik Kim
Summary: This study investigated the effect of Nb doping on the VWT catalyst for removing NOx via SCR. The results showed that Nb improved the reactivity and tolerance of the catalyst. The de-NOx efficiency of VWNbT catalyst increased by 12% compared to VWT catalyst at 240°C after poisoning for 24 hours. Characterization of the catalysts and gas analysis confirmed the reduced formation of ammonium bisulfate and the suitable thermal treatment temperature of 400°C.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Jun Cao, Weizao Liu, KeKe Kang, Li Chen, Xu Qiao, Xiaojiang Yao
Summary: TiO2 nano-rods have a larger BET surface area compared to nano-octahedrons and nano-truncated octahedrons, facilitating the dispersion of active species and enhancing surface acidity and redox ability. V2O5-WO3/TiO2-NRs catalyst exhibits a stronger interaction between active species and support, leading to increased chemisorbed oxygen ratio and improved performance in NH3-SCR reaction under both Langmuir-Hinshelwood and Eley-Rideal mechanisms.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Physical
Wei Zhao, Kai Zhang, Licheng Wu, Qian Wang, Danhong Shang, Qin Zhong
Summary: This study evaluates the effect of self-doping Ti3+ into catalysts on the activity of the catalysts. Various characterization methods such as XRD, XPS, and EPR confirm the presence of Ti3+ and oxygen vacancy, which significantly affect the performance of the catalysts. The results indicate potential for improving low-temperature SCR performance through strategic design of Ti3+ self-doped catalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Jae Gu Heo, Mahboob Ullah, Myoung-Pyo Chun, Yong Sik Chu, Seong Gwan Seo, Min Chae Seo, Young Son Choe, Dae-Sung Kim
Summary: A nanoflake V2O5 catalyst supported on WO3/TiO2 was prepared and compared with a commercial catalyst. The results show that the nanoflake V2O5 catalyst exhibits higher low-temperature conversion efficiency and achieves 100% DeNOx conversion efficiency at lower temperatures. The performance of this catalyst is influenced by the loading amount, crystallinity, and oxidation state ratio of V2O5.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Zhixiang Ren, Ao Li, Xinyu Lei, Zhengwei Yu, Guangying Wang, Hongliang Zhang, Huan Chen, Yin Wang, Hongming Long
Summary: In order to improve the NH3-deNOx performance of the VWT particle catalyst at low temperatures, a series of powder VWT denitrification catalysts doped with different content of RuO2 (R-VWT) were researched. It was found that doping 0.5% RuO2 can lower the particulate catalyst service temperature (about 100% NO conversion) from 225 degrees C (VWT) to below 175 degrees C. Additionally, characterizations indicate that the doped RuO2 enhances the redox performance of R-VWT and promotes the generation of more surface active intermediate monodentate nitrate, accelerating the low-temperature surface SCR transient reaction rate.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Ziyi Chen, Xiaomin Wu, Kaiwen Ni, Huazhen Shen, Zhiwei Huang, Zuoming Zhou, Guohua Jing
Summary: The surface engineering of V2O5-WO3/TiO2 by MoO3 enhanced the acid and redox cycling of NH3-SCR, leading to improved performance. The submonolayer 7Mo-VW/Ti catalyst contained more active dimeric and polymeric vanadia species, which reacted more readily with NH3, forming additional acid sites.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Civil
K. Rodak, A. Urbanczyk-Gucwa, M. Jablonska, J. Pawlicki, J. Mizera
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2018)
Article
Thermodynamics
Magdalena Jablonska, Tomasz Maciag, Marian Nowak, Tomasz Rzychon, Monika Czerny, Karolina Kowalczyk
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2019)
Article
Engineering, Civil
M. B. Jablonska, K. Kowalczyk, M. Tkocz, T. Bulzak, I. Bednarczyk, S. Rusz
Summary: The paper presents results of FEM modelling, properties, and microstructure of ultralow-carbon ferritic steel after unconventional SPD process - DRECE. The DRECE process has a significant influence on the hardness distribution, fracture behavior, and microstructure evolution of the steel, leading to an increase in steel strength properties. Microstructural investigations show that the processed strips exhibit a dislocation cell microstructure and subgrains with low-angle grain boundaries, indicating a high level of grain refinement facilitated by this unconventional SPD method.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Engineering, Civil
M. B. Jablonska, K. Kowalczyk, M. Tkocz, R. Chulist, K. Rodak, I Bednarczyk, A. Cichanski
Summary: The mechanical properties of Ti-stabilized experimental IF steel strips processed by dual rolls equal channel extrusion (DRECE) were significantly improved, especially with an increase in the number of passes. The microstructural investigations revealed dislocation cell and grain structures with mostly low angle grain boundaries in the processed strips.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Engineering, Civil
K. Kowalczyk, M. B. Jablonska, M. Tkocz, R. Chulist, I Bednarczyk, T. Rzychon
Summary: Dual rolls equal channel extrusion (DRECE) is an unconventional severe plastic deformation process that can produce ultrafine-grained microstructures in metals and alloys. This study investigated the evolution of microstructure and texture in DC01 low-carbon steel strip after multiple passes of the DRECE process. The results showed the development of defected microstructures and weakened rolling texture, accompanied by an increase in microhardness.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Review
Engineering, Civil
M. B. Jablonska
Summary: This study discusses the temperature change of TWIP steels during deformation, as a result of the conversion of plastic deformation work into heat. The methods of measuring or modeling these temperature changes are presented. The study highlights that TWIP steels generate higher heat during plastic deformation compared to conventional steels, due to their higher yield stresses and limit strains. This heat has a significant impact on the microstructure and properties of the deformed material. It can lead to changes in deformation mechanisms and affect workability and energy consumption.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Engineering, Civil
Marek Tkocz, Karolina Kowalczyk, Tomasz Bulzak, Magdalena B. Jablonska, Marek Hawryluk
Summary: The material deformation behavior during the DRECE process has been analyzed using FEM simulations. The simulations considered two different channel angles and two processing routes. The results showed significant strain and stress inhomogeneities across the strip thickness, which can be mitigated by choosing a specific processing route. The smaller channel die angle generates larger strain and higher strength of the strip, but reduces its ductility.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
K. Kowalczyk, M. Jablonska, S. Rusz, I. Bednarczyk
ARCHIVES OF METALLURGY AND MATERIALS
(2018)
Article
Metallurgy & Metallurgical Engineering
I Schindler, M. Sauer, P. Kawulok, K. Rodak, E. Hadasik, M. Barbara Jablonska, S. Rusz, V Sevcak
ARCHIVES OF METALLURGY AND MATERIALS
(2019)
Article
Chemistry, Physical
Magdalena Jablonska, Filip Lewandowski, Bartosz Chmiela, Zbigniew Gronostajski
Summary: This study systematically investigates the heat treatments of 60E1 profile rails made of R350HT steel to meet the requirements of the EN 16273 standard. It also presents a concept of cooling rails on a semi-industrial station to achieve the desired properties. Dilatometric tests show that the optimal cooling rate is between 3°C/s and 6°C/s, meeting both the hardness distribution and microstructure requirements of the EN 16273 standard. Tests on the designed and built station reveal that the optimal pressure for the rail's microstructure and properties is 6.5 bar. The results confirm that the designed station can be used for controlled cooling of R350HT steel rails.
Proceedings Paper
Engineering, Manufacturing
M. B. Jablonska, K. Kowalczyk
6TH ICAFT-INTERNATIONAL CONFERENCE ON ACCURACY IN FORMING TECHNOLOGY 25TH SFU-SAXON CONFERENCE ON FORMING TECHNOLOGY6TH AUTOMETFORM-INTERNATIONAL LOWER SILESIA-SAXONY CONFERENCE ON ADVANCED METAL FORMING PROCESSES IN THE AUTOMOTIVE INDUSTRY
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Agnieszka Tomaszewska, Magdalena Jablonska, Marek Tkocz, Iwona Bednarczyk
28TH INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS (METAL 2019)
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Magdalena Jablonska, Karolina Kowalczyk, Stanislav Rusz, Iwona Bednarczyk
28TH INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS (METAL 2019)
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Magdalena Jablonska, Artur Cichanski, Marek Tkocz, Karolina Kowalczyk
28TH INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS (METAL 2019)
(2019)
Article
Metallurgy & Metallurgical Engineering
M. Suliga, M. Jablonska, M. Hawryluk
ARCHIVES OF METALLURGY AND MATERIALS
(2019)
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)