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Two-Step Catalytic Degradations of Dahuangshan Lignite and Directional Upgrading of the Resulting Petroleum Ether-Extractable Portions

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Energy & Fuels 2020年第5期34卷 5457-5465页

作者： Guang-Hui Liu Zhi-Min Zong Fang-Jing Liu Zhi-Hao Ma Xian-Yong Wei Yu-Hong Kang Xing Fan Feng-Yun Ma Jing-Mei Liu Wen-Long Mo Key Laboratory of Coal Processing and Efficient Utilization Ministry of Education China University of Mining & Technology Xuzhou Jiangsu 221116 People’s Republic of China State Key Laboratory of High-Efficiency Utilization and Green Chemical Engineering Ningxia University Yinchuan Ningxia 750021 People’s Republic of China Laboratory of Coal Clean Conversion & Chemical Engineering Process Xinjiang Uyghur Autonomous Region College of Chemistry and Chemical Engineering Xinjiang University Urumqi Xinjiang 830046 People’s Republic of China Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization School of Chemistry and Chemical Engineering Yulin University Yulin Shaanxi 719000 People’s Republic of China

A biochar (BC)-supported non-noble metal catalyst CoMoSxOy@BC was prepared byin situco-pyrolysis andex situsulfurization, and a two-step conversion (TSC) strategy, including H2-controlled catalytic hydroconversion (CHC) and catalytic ethanolysis without H2participation, was proposed and used for catalyzing degradation of Dahuangshan lignite (DL) into soluble species (SSs) in high yields. CoMoSxOy@BC with uniformly dispersed nanoparticles of metals, metal sulfides, and metal oxides plays a crucial role in the TSC. The effective activation of H2and ethanol over CoMoSxOy@BC facilitates cleaving bridged linkages in organic matter of DL to increase the SS yields. As a result, the total yield of SSs increased from 42.7% via non-catalytic degradation (NCD) to 70.0% via catalytic degradation (CD), while that of the petroleum ether-extractable portion (PEEP) increases from 17.5% via NCD to 27.0% via CD. In addition, according to the analysis with a gas chromatograph/mass spectrometer, alkanes, arenes, and arenols are dominant in PEEPs from step 1 (PEEPs1), while alkanol, arenols, and esters in PEEPs from step 2 (PEEPs2) are predominant. The difference in composition among the PEEPs and hydrogenated PEEPs obtained by the CHC further confirms that PEEPs1are more suitable as a precursor for the fuel-platform unit, while PEEPs2are better candidates for obtaining value-added chemicals. In other words, multiple PEEPs in high yields with different properties can be obtained by this TSC strategy, which provides a potential and promising alternative to the clean and efficient utilization of lignites.

关键词： Hydrocarbons Ethanol Catalysts Aromatic compounds Solvents

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Carbonyl-bridged Trifluoromethyl Pyridine Derivatives for Pest Control and Mechanistic Investigations

Advanced Agrochem

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Advanced Agrochem 2025年

作者： Zhubo Sheng Jie Deng Qinglong Yuan Wen Fu Zhiping Xu Xiaoyan Li Zhong Li Xusheng Shao Shanghai Key Laboratory of Chemical Biology School of Pharmacy East China University of Science and Technology Shanghai 200237 China National Key Laboratory of Green Pesticide Guizhou University Guiyang 550025 Guizhou China College of Humanities and Economic Management Yantai Institute of China Agricultural University Yantai 264670 Shandong China State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai 200237 China Shanghai Frontier Science Research Base of Optogenetic Techniques for Cell Metabolism School of Pharmacy East China University of Science and Technology Shanghai 200237 China Engineering Research Center of Pharmaceutical Process Chemistry Ministry of Education School of Pharmacy East China University of Science and Technology Shanghai 200237 China

Trifluoromethyl pyridine ( TFMP ) motif is commonly discovered in structures of active pharmaceuticals. Flonicamid, characterized by the TFMP moiety, is well known as a prodrug in the knockdown of pests. The azobenzene-modified TFMP derivatives have been previously reported with excellent insecticidal activities. Herein, twenty-one TFMP derivatives were designed by the introduction of carbonyl-bridged aryl groups and synthesized via a one-step synthesis using Flonicamid as the starting material. The structure-activity relationships of these compounds were well analyzed and discussed. A molecular docking study and calcium ion concentration analysis indicated that compound FC13 could have interacted with the nicotinamidase enzyme, which further influenced the Ca 2+ influx.

关键词： TFMP carbonyl-bridged structure-activity relationships molecular docking Calcium ion

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Corrigendum to "Current challenges of hydrothermal treated wastewater (HTWW) for environmental applications and their perspectives: A review" [Environ. Res. 212 Part D (2022) 113532]

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Environmental research 2024年第PT 3期252卷 119005页

作者： Muhammad Usman Zhijian Shi Nalok Dutta Muhammad Awais Ashraf Bushra Ishfaq Mohamed Gamal El-Din Department of Civil and Environmental Engineering University of Alberta Edmonton AB T6G 2W2 Canada Bioproducts Sciences and Engineering Laboratory (BSEL) Washington State University Tri-Cities Richland WA 99354 United States Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3) Department of Environmental Science and Engineering Fudan University Shanghai 200433 China Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes Shanghai 200438 China. Electronic address: musman4@ualberta.ca. Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes Shanghai 200438 China. Bioproducts Sciences and Engineering Laboratory (BSEL) Washington State University Tri-Cities Richland WA 99354 United States. State Key Laboratory of Multiphase Complex Systems CAS Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China. Food Technology Section Post-harvest Research Center Ayub Agricultural Research Institute Faisalabad Pakistan. Department of Civil and Environmental Engineering University of Alberta Edmonton AB T6G 2W2 Canada. Electronic address: mgamalel-din@ualberta.ca.

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Water-Soluble Carbon Monoxide-Releasing Molecules (CORMs)

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Topics in current chemistry (Cham) 2022年第1期381卷 3页

作者： Huma Khan Muhammad Faizan Salamat Ullah Khan Niazi Niaz Muhammad Weiqiang Zhang Key Laboratory of Applied Surface and Colloid Chemistry MOE School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China. Key Laboratory of Applied Surface and Colloid Chemistry MOE School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China. faizanattari@***. Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China. faizanattari@***. University of Chinese Academy of Sciences Beijing 100049 China. faizanattari@***. School of Electronic Science and Information Technology Xian Jiaotong University Xi'an 710049 China. School of Biochemistry Minhaj University Lahore Lahore 54000 Pakistan. niazpk@***. Key Laboratory of Applied Surface and Colloid Chemistry MOE School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China. zwq@***.

Carbon monoxide-releasing molecules (CORMs) are promising candidates for producing carbon monoxide in the mammalian body for therapeutic purposes. At higher concentrations, CO has a harmful effect on the mammalian organism. However, lower doses at a controlled rate can provide cellular signaling for mandatory pharmacokinetic and pathological activities. To date, exploring the therapeutic implications of CO dose as a prodrug has attracted much attention due to its therapeutic significance. There are two different methods of CO insertion, i.e., indirect and direct exogenous insertion. Indirect exogenous insertion of CO suggests an advantage of reduced toxicity over direct exogenous insertion. For indirect exogenous insertion, researchers are facing the issue of tissue selectivity. To solve this issue, developers have considered the newly produced CORMs. Herein, metal carbonyl complexes (MCCs) are covalently linked with CO molecules to produce different CORMs such as CORM-1, CORM-2, and CORM-3, etc. All these CORMs required exogenous CO insertion to achieve the therapeutic targets at the optimized rate under peculiar conditions or/and triggering. Meanwhile, the metal residue was generated from i-CORMs, which can propagate toxicity. Herein, we explain CO administration, water-soluble CORMs, tissue accumulation, and cytotoxicity of depleted CORMs and the kinetic profile of CO release.

关键词： CO-releasing molecules (CORMs) Carbon monoxide (CO) Cellular targets Cytotoxicity Organometallic complexes Water-soluble CORMs

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Preparation and sintering behavior of pre-synthesized Mg-Al-Cr ternary spinel ceramic powders

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Materials Letters 2025年 396卷

作者： Hui, Shichang Yan, Jingmin Zhao, Wenkai Zhang, Teng Yuan, Chengzong Li, Huixing Qian, Peng Zhang, Xiaomeng Ye, Shufeng State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemistry and Chemical Engineering of University of Chinese Academy of Sciences Beijing100049 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing100190 China Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou341119 China Jinzhou Great Wall Refractory Material Co. Ltd Jinzhou121000 China

Achieving highly dense spinel materials remains challenging due to significant volume expansion during binary spinel (MgAl2O4 and MgCr2O4) formation and sluggish ionic diffusion during sintering. In this research, ternary spinel powders (Mg(Al,Cr)2O4) were synthesized via a hydrothermal method followed by calcination, and their sintering behavior without additives was investigated. Results indicated that the Mg(Al,Cr)2O4 powders were single-phase with the characteristic spinel structure, uniform particle sizes ranging from 50 to 100 nm, high specific surface area (34.61 m2/g), and a low onset sintering temperature (1010 °C). After sintering at 1500 °C for 6 h, the powders exhibited excellent densification with an apparent porosity as low as 5.03 % and a bulk density reaching 3.52 g/cm3. Remarkably, this represents a reduction in the sintering temperature by approximately 200 °C compared to previously reported values for achieving similar densification. The enhanced low-temperature densification behavior of pre-synthesized Mg-Al-Cr spinel primarily arises from abundant oxygen vacancy defects within the spinel lattice. These findings offer valuable insights into designing ternary spinel powders and fabricating dense, pre-synthesized spinel ceramics. © 2025

关键词： Semiconductor doping

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Promoting Syngas to Olefins with Isolated Internal Silanols-Enriched Al-IDM-1 Aluminosilicate Nanosheets

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Angewandte Chemie 2023年第52期135卷

作者： Jie Tuo Yaqi Fan Dr. Yan Wang Yudan Gong Chengwei Zhai Xianchen Gong Teng Yang Prof. Hao Xu Jingang Jiang Prof. Yejun Guan Prof. Yanhang Ma Prof. Peng Wu Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University North Zhongshan Rd. 3663 200062 Shanghai China State Key Laboratory of Petroleum Molecular and Process Engineering SKLPMPE Sinopec Research Institute of Petroleum Processing Co. LTD. 100083 Beijing China East China Normal University 200062 Shanghai China School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech University 201210 Shanghai China School of Chemical Engineering Sichuan University 610065 Chengdu China Institute of Eco-Chongming 202162 Shanghai China

Selective conversion of syngas to value-added olefins has attracted considerable research interest. Regulating product distribution remains challenging, such as achieving higher olefin selectivity, propylene/ethylene ( P/E ) and olefin/paraffin ( O/P ) ratios. A new pentasil zeolite Al-IDM-1 with recently approved − ION structure, composed of 17-membered-ring (MR) extra-large lobed pores and intersected 10-MR medium pores, shows a C 2–6 = selectivity up to 85 % and a high O/P value of 14 in the conversion of syngas when being combined with Zn a Al b O x oxide. Moreover, for the high-silica Al-IDM-1 with Si/Al ratio of 400, the selectivity of propylene and butene accounts for 88 % in C 2–4 = , resulting in high P/E (>4) and butene/ethylene ( B/E >3) ratios. The high C 3–4 = selectivity is contributed by two main reasons, that is, the relatively weak acidity of Al-IDM-1 zeolite enhances the olefin-based cycle revealed by the probe reactions of methanol-to-propylene (MTP) and 1-hexene cracking, and the rich isolated internal SiOH groups in Al-IDM-1 promote the desorption of C 3–4 = , once they are formed inside zeolite pores.

关键词： IDM-1 Zeolite Internal Silanol Olefins Syngas Conversion

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MoS2Hollow Multishelled Nanospheres Doped Fe Single Atoms Capable of Fast Phase Transformation for Fast-charging Na-ion Batteries

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Angewandte Chemie 2024年第17期136卷

作者： Hui Zhang Shaocheng Zhang Baiyu Guo Li-juan Yu Linlin Ma Baoxiu Hou Haiyan Liu Shuaihua Zhang Prof. Jiangyan Wang Jianjun Song Prof. Yongfu Tang Prof. Xiaoxian Zhao Department of Chemistry College of science Hebei Agriculture University Baoding 071001 P.R. China College of Chemical Engineering and Technology Taiyuan University of Technology Taiyuan 030024 China Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 China ARC Centre of Excellence for Electromaterials Science Research School of Chemistry Australian National University Canberra Australian Capital Territory 2601 Australia State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences No. 1 Beierjie Zhongguancun Beijing 100190 P. R. China College of Physics Qingdao University Qingdao 266071 China

Low Na + and electron diffusion kinetics severely restrain the rate capability of MoS 2 as anode for sodium-ion batteries (SIBs). Slow phase transitions between 2H and 1T, and from Na x MoS 2 to Mo and Na 2 S as well as the volume change during cycling, induce a poor cycling stability. Herein, an original Fe single atom doped MoS 2 hollow multishelled structure (HoMS) is designed for the first time to address the above challenges. The Fe single atom in MoS 2 promotes the electron transfer, companying with shortened charge diffusion path from unique HoMS, thereby achieving excellent rate capability. The strong adsorption with Na + and self-catalysis of Fe single atom facilitates the reversible conversion between 2H and 1T, and from Na x MoS 2 to Mo and Na 2 S. Moreover, the buffering effect of HoMS on volume change during cycling improves the cyclic stability. Consequently, the Fe single atom doped MoS 2 quadruple-shelled sphere exhibits a high specific capacity of 213.3 mAh g −1 at an ultrahigh current density of 30 A g −1 , which is superior to previously-reported results. Even at 5 A g −1 , 259.4 mAh g −1 (83.68 %) was reserved after 500 cycles. Such elaborate catalytic site decorated HoMS is also promising to realize other “fast-charging” high-energy-density rechargeable batteries.

关键词： Fe single atom fast phase transformation multi-shelled sodium-ion battery

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Efficient Alcoholysis of Polyester Using Deep Eutectic Solvents

Efficient Alcoholysis of Polyester Using Deep Eutectic Solve...

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中国化学会第七届全国热分析动力学与热动力学学术会议

作者： Lifei Liu Qing Zhou Qinglan Ma Xingmei lu Suojiang Zhang Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of Sciences State Key Laboratory of Heavy Oil Processing China University of Petroleum School of Chemical and Engineering University of Chinese Academy of Sciences

Polyethylene terephthalate（PET） has been widely used in these years due to it’s transparent,nontoxic and chemically *** the further development of PET applications,the annual consumption and waste of PET in China is also increasing year by year,in which more than 80% of the waste are polyester ***,how to achieve the recycling of polyester fiber has been an urgent problem for PET pollution and an efficient degradation of polyester is the key to increase the recovery rate of *** this work,we developed a series of glycine based DES,which are hypotoxic,easy to prepare and cheaper than conventional ionic liquid *** the condition of 180℃,5 wt% catalyst and four times the amount of EG could degrade polyester into BHET monomer within 1 hour,the conversion of polyester and the yield of BHET were 100% and 86% respectively,which has good effect on degradation of polyester.

关键词： Polyester fiber DES

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Disulfide Click Reaction for Stapling of S-terminal Peptides

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Angewandte Chemie 2023年第52期135卷

作者： Qing Yu Leiyang Bai Xuefeng Jiang Shanghai Key Laboratory of Green Chemistry and Chemical Process School of Chemistry and Molecular Engineering East China Normal University 3663 North Zhongshan Road Shanghai 200062 P. R. China School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 P. R. China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China

A disulfide click strategy is disclosed for stapling to enhance the metabolic stability and cellular permeability of therapeutic peptides. A 17-membered library of stapling reagents with adjustable lengths and angles was established for rapid double/triple click reactions, bridging S-terminal peptides from 3 to 18 amino acid residues to provide 18- to 48-membered macrocyclic peptides under biocompatible conditions. The constrained peptides exhibited enhanced anti-HCT-116 activity with a locked α-helical conformation (IC 50 =6.81 μM vs. biological incompetence for acyclic linear peptides), which could be unstapled for rehabilitation of the native peptides under the assistance of tris(2-carboxyethyl)phosphine (TCEP). This protocol assembles linear peptides into cyclic peptides controllably to retain the diverse three-dimensional conformations, enabling their cellular uptake followed by release of the disulfides for peptide delivery.

关键词： Cyclic Peptides Disulfide Stapling Reagents Peptide Delivery Reversible Stapling α-Helicity

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Effect of dispersion degree of iron on catalytic hydrogasification of coal char

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Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology 2019年第4期47卷 402-410页

作者： Zhang, Feng Sun, Hao Zhang, Jian-Shu Yan, Shuai Qu, Xuan Zhang, Rong Bi, Ji-Cheng School of Chemistry and Chemical Engineering/Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan-Provincial Ministry of Education to Build a National Key Laboratory Breeding Base Shihezi University Shihezi832003 China State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan030001 China

The effect of dispersibility of Fe on coal chars with different specific surface areas on the catalytic hydrogasification performance was studied in a pressurized fixed bed reactor. The chars and catalysts were characterized by XRD, BET, H2-TPR, FT-IR, TEM and Raman spectroscopy. The results show that the active site and graphitization degree of coal char are not the only factors affecting the catalytic gasification reaction, but the dispersion of catalyst has a greater impact on the reaction. The larger the specific surface area of coal char is, the more uniform the Fe catalyst disperses on the surface of coal char and the smaller the average grain size of the active component of catalyst is, which can promote the formation of the catalytically hydrogenated mesophase product Fe3C and methane yield. For 900-char with higher specific surface area, the methane yield can reach 53% when the hydrogen pressure is 2 MPa, the temperature is 750℃ and the Fe loading is 5%. The effect of Fe catalyst loading on the catalytic hydrogasification was investigated with 900-char. It is found that the methane yield increases first and then decreases, and the Fe loading has a saturation point. © 2019, Science Press. All right reserved.

关键词： Iron

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