Article
Chemistry, Multidisciplinary
Le Ma, Feifan Guo, Jian-Fang Ma
Summary: In this study, two Cu(I)-based inorganic-organic complexes were designed and studied by combining polyoxometalate, Cu(I) ions and tetra-[2-mercaptopyrimidine]-thiacalix[4]arene. These complexes demonstrated excellent catalytic performance and stability in oxidation desulfurization and cycloaddition reactions, and could be easily separated and recycled.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Jun Xiong, Jiayu Li, Chao Chen, Wei Jiang, Wenshuai Zhu, Huaming Li, Jun Di
Summary: This study proposes a universal strategy to engineer grain boundaries into oxides via a facile two-step growth method, and applies grain boundaries to catalytic oxidative desulfurization reactions. Taking W18O49 nanowires as an example, the engineered grain boundaries can establish stronger interfacial molecular interactions with DBT, improving surface adsorption and activation performance, as well as enhancing molecular oxygen activation capacity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Coatings & Films
I. V. Lukiyanchuk, M. S. Vasilyeva, A. Yu Ustinov, A. A. Bryzhin, I. G. Tarkhanova
Summary: The catalytic properties of Ti/TiO2/NiWO4 + WO3 composites fabricated by plasma electrolytic oxidation (PEO) of titanium in a solution containing 0.1 mol/L Na2WO4 + 0.1 mol/L CH3COOH + 0.05 mol/L Ni(CH3COO)(2) were studied in model reactions, and it was found that such composites are promising for catalytic oxidation of both S-containing and N-containing petroleum compounds. The role of nickel in increasing their activity and stability was demonstrated.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Engineering, Environmental
Tieyue Qi, Shuo Zhang, Jingzhao Zhang, Tong Li, Lei Xing, Zhimo Fang, Shanlong An, Zhongfei Xu, Huining Xiao, Lidong Wang
Summary: This study proposes a waste control method to treat wastewater containing highly toxic Cr(VI) and sulfite. Through the redox reaction of Cr(VI)-sulfite, highly toxic Cr(VI) is converted into non-toxic substances and enriched on a novel biochar-induced cobalt-based silica composite. This method effectively reduces the harm to aquatic life and human health.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Fen Liu, Wenxuan Bai, Zhiping Gu, Jingcong Zhang, Jinxiang Chen, Jiang Yu
Summary: The quantitative pyridine-IR spectrum method was developed to determine the structural forms of Bronsted and Lewis acid in Fe-IL, as well as the Lewis activity. The solvent effect on the acidic structure and Lewis activity of Fe-IL was also investigated.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Applied
Ning Gu, Yueyang Xu, Yan Yin, Xuzhao Gao, Yongping Zeng
Summary: SOx released from the combustion of sulfur-containing compounds in fuels can pollute the environment and have a serious impact on human health. Adsorption desulfurization using metal-organic frameworks (MOFs) is an effective and environmentally friendly technique. In this study, Ni@MIL-100(Fe)-SA adsorbent was prepared and its adsorption performance for thiophene and benzothiophene was evaluated. The results showed that Ni2+ successfully loaded onto MIL-100(Fe)-SA, and the adsorbent exhibited high adsorption capacities for both compounds. The regenerated adsorbent also maintained good crystallinity after recycling.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Rooh Ullah, Mustafa Tuzen, Saif Ullah, Muhammad Haroon, Rozina Khattak, Tawfik A. Saleh
Summary: A series of novel mixed metal oxides (MOs) were prepared as supports for Ni/MOs using the double hydrolysis technique. The desulfurization study showed that the 10%NiZnO-Al2O3 adsorbent exhibited superior desulfurization performance with a breakthrough point of 10 ppm in model gasoline. The superior desulfurization performance was attributed to its higher Lewis and Lewis/Bronsted acid site ratio, higher surface area, larger pore size distribution, and lesser amount of inactive ZnAl2O4 spinel.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Applied
Jingjing Wang, Lihong Li, Zhihui Wen, Jinchuan Zhao, Xinjie Wei, Junjie Liao, Liping Chang, Kechang Xie
Summary: Adsorption desulfurization processes using zeolites as sorbents are cost-effective and promising. Modifying Y zeolites with Cu and Ce enhances their adsorption capacity and selectivity. The choice of different metal precursors affects the active sites and desulfurization performance of the sorbents.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Zhiguo Zhu, Haikuo Ma, Weiping Liao, Pengpeng Tang, Kaixuan Yang, Ting Su, Wanzhong Ren, Hongying Lu
Summary: This study constructed tri-coordinated Al with Lewis acidity in ultra-stable Y zeolite by precisely tailoring acid-treatment time, demonstrating these Lewis acid sites as the catalytic active sites for oxidative desulfurization reactions. Systematic investigation was conducted to reveal the physicochemical properties and evolution mechanism of dealumination-derived samples, confirming the most possible tri-coordinated Al micro-structure with Lewis acidity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Mingyuan Zhu, Aili Liu, Yibin Tong, Juan Li, Lihua Kang
Summary: In this study, three-dimensional ordered Sn-KIT-6 mesoporous silica materials were successfully prepared by one-step hydrothermal synthesis method. The addition of SnO2 did not affect the highly ordered pore structures of KIT-6 and SnO2 was well dispersed in the KIT-6 framework. The desulfurization rate of Sn-KIT-6 was high under optimal conditions, attributed to the high dispersion of SnO2. However, the desulfurization rate of Sn-KIT-6 decreased after 6 cycles, indicating potential loss of SnO2 during the oxidative desulfurization process.
CATALYSIS COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Mingli Bi, Shengjie Song, Zhixin Li, Bingxue Zhang, Liu Zhao, Kaixuan Guo, Jinhong Li, Lidong Chen, Qi Zhao, Weiguo Cheng, Xiangsheng Wang, Xinwen Guo
Summary: The in-situ preparation of HPV2Mo10/TS-1-TPAOH@SiO2 catalyst showed the best performance in desulfurization by oxidation, while retaining the characteristics of the polyoxometalate (POM) and modified zeolite. It effectively catalyzed the oxidative desulfurization reactions of thiophene, benzothiophene, and dibenzothiophene.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Energy & Fuels
Zakiullah Zaidi, Laxmi Gayatri Sorokhaibam
Summary: A novel chemical-biological approach using molybdenum and Rhodococcus erythropolis for liquid fuel desulfurization was investigated. The results show that Rh-Mo@FAT can significantly reduce the concentration of organosulfur compounds in fuel oil.
Article
Chemistry, Physical
Shu Shi, Yu-Xia Li, Shuai-Shuai Li, Xiao-Qin Liu, Lin-Bing Sun
Summary: Cu+-containing materials have promising applications in adsorption and catalysis. A mild and controllable approach for Cu+ site fabrication has been a challenge. This study presents a novel double-solvent strategy for Cu+ site fabrication in MIL-101(Cr). The resulting Cu+-modified MIL-101(Cr) exhibits good desulfurization performance.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Energy & Fuels
Shao-Xu Mao, Qi-Hang Zhou, Hui-Li Guo, Ming Du, Wen-Shuai Zhu, Hua-Ming Li, Jing-Yu Pang, Dong-Bin Dang, Yan Bai
Summary: This article reports a novel porous phosphomolybdate-based poly(ionic liquid) catalyst with 70% water (PDIM-PMo-W70%). The catalyst showed a turnover frequency (TOF) value of 41.15 h-1 for dibenzothiophene (DBT) removal, which was 35.47 and 9.92 times higher than that of HPMo and PDIM-PMo, respectively. The effects of water content, reaction temperature, H2O2/S molar ratio, catalyst dosage, and different sulfur-containing compounds on the oxidative desulfurization (ODS) performance were investigated in detail.
Article
Energy & Fuels
M. Christina Nilavu, B. Arunraj, Himanshu Aggarwal, N. Rajesh
Summary: By oxidizing and modifying carbon from Prosopis juliflora wood, sulfur removal from model fuel oil was efficiently achieved via adsorption with ultrasound assistance. The adsorbent exhibited a high specific surface area and mesoporous structure, leading to excellent removal efficiency for Dibenzothiophene. The adsorption process was thermodynamically favorable and followed pseudo-second-order kinetics.
Article
Chemistry, Analytical
Rongchao Chen, Zhihong Li, Ying Shi, Li-Zhi Liu, Yuexiang Wang, Baoliang Lv
Summary: This paper discusses the use of WAXS to characterize the ordered structure in materials, and presents the analytical solution of calibration equations and error estimation matrix. Through error simulation and experimental verification, it is shown that selecting three standard diffraction peaks can effectively reduce the error of angle calibration.
INSTRUMENTATION SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Chemical
Guangxin Jia, Beibei He, Yu Li, Laishuan Liu, Jiantao Zhao, Baoliang Lv
Summary: In this study, an improved genetic algorithm was used to analyze the thermodynamic equilibrium of the synthesis processes of alkyl glycerol ethers using different alcohols and glycerol. The effects of temperature, pressure, and feed ratio on equilibrium conversion, product selectivity, and equilibrium composition were compared. It was found that the isopropanol + glycerol system had the highest conversion rate into alkyl glycerol ethers.
Article
Chemistry, Multidisciplinary
Huixiang Wang, Xiaobo Ren, Zhong Liu, Baoliang Lv
Summary: The facet of transition metal oxide (TMO) nanocrystals greatly affects their properties, such as heterogeneous catalytic performance, photocatalysis, gas sensing, and electrochemical reactions in chemical conversion processes. By studying the facet-dependent properties through experiments and theoretical calculations, the mechanisms of chemical reactions are accurately explained at the molecular level. Well-defined TMO nanocrystals are crucial for obtaining reliable results, and shape-controlled synthesis of TMO nanocrystals has received significant attention.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jingzhao Ren, Liancheng Wang, Penghui Li, Xiangying Xing, Huixiang Wang, Baoliang Lv
Summary: Linear terminal olefin epoxidation is an important oxidation reaction. In this study, bowl-shaped gamma-Al2O3-supported silver catalysts were synthesized and their catalytic performance in the epoxidation of 1-hexene was investigated. The results showed that the initiator promotes selective oxidation, and the variation in catalytic performance is attributed to the oxidized silver content.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Yuexiang Wang, Zhihong Li, Jiao Kong, Liping Chang, Yixin Zhao, Lili Dong, Baoliang Lv
Summary: Coal is an important energy and chemical raw material, and carbonization is an effective way for comprehensive utilization, especially for coal with coking capability. Fractal description can characterize the complex pore structure of raw coal and its carbonization solid products, but the change in the fractal structure of coal with coking capability during carbonization remains unclear.
PHILOSOPHICAL MAGAZINE LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jing Shi, Xiangying Xing, Huixiang Wang, Lin Ge, Haizhen Sun, Baoliang Lv
Summary: In this study, a novel hierarchical structure material of Cu-WO3 NANF was successfully synthesized and exhibited remarkable catalytic activity for the thermal decomposition of AP. This may provide a new idea for the design of hierarchical catalysts and opened up a new field for WO3 applications.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Yuexiang Wang, Zhihong Li, Jiao Kong, Liping Chang, Yixin Zhao, Dongfeng Li, Baoliang Lv
Summary: Carbonization is an effective method for the comprehensive utilization of coal. This study investigates the in situ variation of graphite-like microcrystals, the basic structure of coal macromolecules, during the carbonization process. Through an in situ synchrotron radiation wide-angle X-ray scattering (WAXS) study, the researchers reveal and describe the roadmap of graphite-like microcrystalline structure change during the continuous process of heating and cooling.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Chemistry, Physical
Xiangying Xing, Huixiang Wang, Jing Shi, Penghui Li, Jingzhao Ren, Liancheng Wang, Jianli Zhang, Zhong Liu, Baoliang Lv
Summary: In this study, broken carbon spheres treated with nitric acid were used as a support to anchor WOx in a dynamic solvothermal process to improve its performance in olefin epoxidation. The obtained WOx/C significantly increased the selectivity of 1,2-epoxyhexane and a proposed catalytic mechanism under WOx/C catalysis was reasonably proposed.
Article
Chemistry, Multidisciplinary
Rongchao Chen, Zhihong Li, Ying Shi, Li-Zhi Liu, Dongfeng Li, Yixin Zhao, Baoliang Lv
Summary: In this study, in situ preoxidation of PAN fibers was investigated using wide-angle X-ray scattering and small-angle X-ray scattering techniques on a synchrotron radiation beamline. The structural changes of the fibers' skeleton and pores were revealed, corresponding to different diffraction spots and scattering streaks. The preoxidation process demonstrated distinct stages, and a possible mechanism was analyzed.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Chemistry, Physical
Rong Zhang, Liancheng Wang, Jingzhao Ren, Changchen Hu, Baoliang Lv
Summary: This study obtained experimental evidence on the significant impact of BN shells on hydrogenation by controlling the thickness of the BN overlayers on Co@BN/BN model catalysts. The findings showed that ultra-thin BN shells provided more migrating sites and effectively shortened the hydrogen spillover distance, thereby enhancing the activity of the catalyst. These observations provide new insights into the confined effect on the catalysis process through the precise regulation of BN shell properties.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Huan Li, Xu Han, Jingjing Li, Hefang Guo, Baoliang Lv, Fengwei Zhang
Summary: In this study, a novel catalyst ECN@FePc-600-2 with highly accessible single-atom iron site and superior catalytic performance was developed, which can effectively degrade industrial dye wastewater.
Article
Chemistry, Physical
Li Qin, Liancheng Wang, Chun Han, Jingzhao Ren, Qiang Wang, Baoliang Lv
Summary: The study finds that pyridinic N in nitrogen-doped carbon catalysts, in cooperation with electron-donating BC3, enhances the electrophilic attack and electron transfer ability of carbon atoms to CO2. The implanted BC3 also promotes water activation and proton transfer, leading to higher CO production rate on two-step synthesized B and N co-doped porous graphene (tBNPG). Further decoration of oxygen-containing functional groups on tBNPG increases the competitive H2 evolution while delivering lower limiting potentials for H2O transition to *H, determining the fate of either HER or CO2RR. This atomic-level insight provides a cornerstone for the design of catalysts for proton-involved electrochemical reactions.
Article
Chemistry, Multidisciplinary
Penghui Li, Huixiang Wang, Junhua Gao, Liancheng Wang, Jing Shi, Yu Meng, Junfen Li, Baoliang Lv
Summary: In this study, WO3-SBA-15 catalyst with isolated tetrahedral WO4 structure was synthesized using a direct incorporation strategy. The catalyst exhibited much higher activity and lower apparent activation energy compared to other catalysts, which was attributed to the coordinated activation of H2O2 at the isolated WO4 sites and the metal-support interaction for the dissociation of the W-OOH intermediate and insertion of oxygen atom into olefin double bond.
NEW JOURNAL OF CHEMISTRY
(2023)