Article
Chemistry, Physical
Shuang Chu, Xiang Li, Roel Prins, Chunhua Wang, Yingya Liu, Anjie Wang, Qiang Sheng
Summary: Ultrasmall Ni2P nanoparticles supported on SiO2 and Al2O3-B2O3 were synthesized using Ni(NO3)2 and H3PO3 as precursors. The introduction of B2O3 to Al2O3 inhibited the formation of AlPO4 during reduction. The Ni-P/SiO2 catalysts with weak Ni2P-support interaction showed high activity, while the Ni-P/AB catalysts with strong Ni2P-support interaction exhibited lower activity.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Rufino M. Navarro Yerga, Barbara Pawelec, Noelia Mota, Rafael Huirache-Acuna
Summary: New Ni-Mo-Mo hydrodesulfurization (HDS) catalysts supported by Al2O3-CeO2 materials were synthesized to achieve low sulfur content in gas oil. The addition of CeO2 loading in the support significantly improved the activity and hydrogenation function of the catalyst, leading to efficient conversion of dibenzothiophene (DBT).
Article
Materials Science, Multidisciplinary
M. Gonzalez-Ildelfonso, J. Escobar, E. Gordillo-Cruz, P. del Angel, V. A. Suarez-Toriello, J. A. De los Reyes
Summary: In this study, researchers successfully achieved deep removal of refractory dibenzothiophene using catalysts supported on Al2O3 with noble metal modification. Calcined catalysts showed better catalytic activity, while Ru-doped catalysts were detrimental to catalytic activity when not calcined before activation.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Ceramics
Hyeon Woo Kim, Hyunseok Ko, Yong-Chae Chung, Sung Beom Cho
Summary: This study identified the thermodynamic phase diagram of (AlxGa1-x)(2)O-3 alloy using density-functional theory calculations, revealing a significantly increased metastability compared to isostructural alloys. By investigating the correlation between bandgap and lattice constant, the research provides guidance for the design of Ga2O3 power electronics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Hao Wang, Hongchuan Xiong, Fan Yang, Yang Li, Shiang He, Yan Wu
Summary: The influence of activation atmosphere on the active phase, hydrodesulfurization (HDS) and hydrodearomatization (HDA) activities of NiW pre-sulfurized hydrotreating catalysts was investigated. Catalyst activated under H-2 exhibited higher HDS activity for dibenzothiophene (DBT) and HDA activity for tetralin (THN) than those activated under N-2 due to the presence of more S-2(2-), NiWS and -SH groups. The use of different activation temperatures under H-2 may tune the HDS and hydrogenation activity of LDH-based pre-sulfurized catalysts.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Materials Science, Ceramics
Esneyder Puello-Polo, Noemi R. Checca-Huaman, Elvis O. Lopez, Carlos A. T. Toloza, Franklin J. Mendez
Summary: The impact of the synthesis method on the properties of the Al2O3-Ga2O3 sample was investigated. Ga loading resulted in an increase in surface area and pore volume, but a decrease in pore size. XRD analysis confirmed the formation of γ-Al2O3 with Ga atoms incorporated into the structure. The adsorption affinity of the adsorbent was strongest for BT and weakest for DBT.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Applied
Idia G. Nascimento, William de R. Locatel, Bruno C. Magalhaes, Leonardo Travalloni, Jose L. Zotin, Monica A. P. da Silva
Summary: This study aimed to estimate the kinetic parameters of DBT HDS reactions, with two power-law models providing good fits to the experimental data with different levels of detail. The estimation of parameters related to biphenyl hydrogenation to cyclohexylbenzene was hindered due to its significance only at conditions with high DBT conversions.
Article
Engineering, Chemical
Gentil de Souza Guedes Jr, Idia Gigante Nascimento, Mueed Ahmad, Cormac Killeen, J. Anibal Boscoboinik, Jason Trelewicz, Jose Carlos Pinto, Matheus Dorneles de Mello, Monica Antunes Pereira da Silva
Summary: This work evaluated the kinetic parameters of the simultaneous reactions of HDS and HDN using CoMoP/Al2O3 and NiMoP/Al2O3 catalysts. Both power-law and Langmuir-Hinshelwood models provided good fits for the experimental data. The NiMoP catalyst showed higher hydrogenating power and stronger adsorption of nitrogen compounds compared to the CoMoP catalyst. Catalysts with higher hydrogenating power are more capable of performing both HDN and HDS reactions simultaneously.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Energy & Fuels
Pengcheng Wang, Jun Liu, Guo Liu, Peiwen Xu, Xinzhen Feng, Weijie Ji, Yulan Gao, Chak-Tong Au
Summary: By studying the interfacial structures of oxidic CoMoOx/Al2O3 and sulphurated CoMoSx/Al2O3 in the selective hydrodesulfurization of dibenzothiophene, it was found that different structures significantly affected the efficiency of the reaction. The surface MoS2/CoMoS/Co9S8 species on the Al2O3 (1 1 0) facet showed the highest conversion rate of DBT, highlighting the importance of MoS2-Co9S8 and MoS2-CoMoS conjunction and synergism.
Article
Chemistry, Physical
S. Samaneh Bahrani, Abbas Ali Khodadadi, Yadolah Mortazavi
Summary: It has been found that selective deposition of NiO on MoOx/?-Al2O3 enhances the formation of active NiMoS catalytic phase, leading to improved hydrodesulfurization activity. Catalysts prepared by selective atomic layer deposition (S-ALD) showed higher desulfurization conversions at lower reaction temperatures and pressures compared to those prepared by impregnation. HR-TEM and XPS characterization revealed that the enhanced activity of S-ALD catalysts is attributed to the formation of more active NiMoS catalytic phase with higher sulfidability than their impregnation counterparts.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xing Liu, Shaoqing Guo, Haitao Cui, Zhenrong Li, Zhenhui Liang, Xin Li, Jiantao Zhao, Lijing Yuan, Liangfu Zhao
Summary: In this study, a meso/microporous composite material KB was successfully synthesized by an in situ assembly method, and corresponding NiW/KB-3 catalysts were prepared for quinoline hydrodenitrification (HDN) reactions. The results showed that KB-3 displayed the highest HDN activity among all the catalysts, attributed to its open channel structure, excellent textural properties, suitable acidity, and good dispersion of active species, indicating the potential application of KB-3 in HDN reactions.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
Zhusong Xu, Haoze Wang, Huanqi Kang, Luyuan Zhao, Xiaodong Liu, Wenbing Huang, Yasong Zhou, Qiang Wei
Summary: This article proposes a novel organic additive HEDP for the preparation of efficient HDS catalysts. The effects of HEDP on the nature of tungsten and nickel species supported on the support surface were investigated. The addition of HEDP facilitates the formation of polymerized tungsten oxide species and improves the availability of surface nickel atoms, resulting in the enhancement of catalytic activity.
Article
Chemistry, Applied
J. N. Diaz de Leon, A. L. Castaneda-Garcia, C. E. Soto-Arteaga, G. Torres-Otanez, Y. Esqueda-Barron, M. A. Guzman-Cruz, G. Alonso-Nunez, S. Fuentes-Moyado
Summary: Experimental analysis showed that Al2O3-TiO2 binary mixed oxides can be used as supports of NiW hydrodesulfurization catalysts. The use of different surfactants led to significant differences in pore-size distribution, surface composition, and morphology. Additionally, XPS analysis confirmed the surface enrichment with alumina, impacting the activity of the NiW catalysts.
Article
Chemistry, Inorganic & Nuclear
Islam Ali, Tawfik A. Saleh
Summary: The influence of boron element on the activity of a hydrodesulfurization catalyst was evaluated. The addition of boron improved the specific surface area and catalytic activity of the catalyst, highlighting the significant role of boron in enhancing catalyst performance.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Abdulkadir Tanimu, Saheed A. Ganiyu, Ivan Kozhevnikov, Khalid Alhooshani
Summary: The sulfidation of NiMo catalyst by thermal decomposition of support surface-bound thiols to generate H2S is a clean and effective method for catalyst activation. The loading of thiol groups affects the formation and dispersion of MoS2 active phase on the support, and the interaction between thiol groups and Mo metal enhances metal dispersion on the thiol-containing support.
ARABIAN JOURNAL OF CHEMISTRY
(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)