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Improve the Conversion Rate and Selectivity of Aromatic Monomers in Lignin Photocatalytic Conversion Reaction Via Phase Junction Cadmium Sulphide Nanoparticles and External Hydrogen Supplier

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SSRN 2023年

作者： Yue, Zongyang Shao, Shibo Yu, Jialin Lu, Guanchu Wei, Wenjing Huang, Yi Zhang, Kai Wang, Ke Fan, Xianfeng Institute for Materials and Processes School of Engineering The University of Edinburgh EdinburghEH9 3BF United Kingdom Petrochemical Research Institute PetroChina Company Limited Beijing102206 China Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Innovation Academy for Green Manufacture Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Henan University Zhengzhou450000 China Beijing Key Laboratory of Emission Surveillance and Control for Thermal Power Generation North China Electric Power University Beijing102206 China

Photocatalysis has the potential for lignin valorisation to generate functionalised aromatic monomers, but its large-scale application has been limited by the slow conversion rate and the low selectivity to desirable products. In this work, record-high lignin model compound Cβ-O bonds cleavage rate and excellent selectivity to aromatic monomers has been achieved over the development of new hexagonal-cubic phase junction CdS nanoparticles, enhanced external hydrogen donor supply and hydrogen transfer, and improved separation efficiency of photo-excited electron-hole pairs. Water is employed as external hydrogen supplier, resulting in significant increase in the conversion rate of 2-Phenoxy-1-phenylethanol (PP-ol) as lignin model from 21.8% to 100% and the selectivity of aromatic monomers from ~45% to ~94% under 1h of visible light irradiation. 2-phenoxyacetophenone (PP-one) as by-product from PP-ol conversion can be further completely cleaved to aromatic monomers with assistance of TEA and reaction time is reduced from 2-12 hrs to10 min under visible-light irradiation. © 2023, The Authors. All rights reserved.

关键词： Lignin

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Numerical simulations and comparative analysis of two- and three-dimensional circulating fluidized bed reactors for CO2 capture

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Chinese Journal of Chemical engineering 2020年第12期28卷 2955-2967页

作者： Yefeng Zhou Yifan Han Yujian Lu Hongcun Bai Xiayi Hu Xincheng Zhang Fanghua Xie Xiao Luo Jingdai Wang Yongrong Yang National&Local United Engineering Research Centre for Chemical Process Simulation and Intensification Chemical Process Simulation and Optimization Engineering Research Center of Ministry of EducationXiangtan UniversityXiangtan 411105China State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering Ningxia UniversityYinchuan 750021China College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringDepartment of Chemical EngineeringZhejiang UniversityHangzhou 310027China

Carbon dioxide(CO2),the main gas emitted from fossil burning,is the primary contributor to global *** fluidized bed reactor(CFBR)is proved as an energy-efficient method for post-combustion CO2 *** numerical simulation by computational fluid dynamics(CFD)is believed as a promising tool to study CO2 adsorption process in *** three-dimensional(3D)simulations were proved to have better predicting performance with the experimental results,two-dimensional(2D)simulations have been widely reported for qualitative and quantitative studies on gas-solid behavior in CFBR for its higher computational efficiency ***,the discrepancies between 2D and 3D simulations have rarely been evaluated by detailed *** that the differences between the 2D and 3D simulations will vary substantially with the changes of independent operating conditions,it is beneficial to lower computational costs to clarify the effects of dimensionality on the numerical CO2 adsorption runs under various operating *** this work,the comparative analysis for CO2 adsorption in 2D and 3D simulations was conducted to enlighten the effects of dimensionality on the hydrodynamics and reaction behaviors,in which the separation rate,species distribution and hydrodynamic characteristics were comparatively studied for both model *** both accuracy and computational costs considered,the viable suggestions were provided in selecting appropriate model frame for the studies on optimization of operating conditions,which directly affect the capture and energy efficiencies of cyclic CO2 capture process in CFBR.

关键词： Two-and three-dimensional simulations Circulating fluidized bed reactor Carbon dioxide adsorption Computational fluid dynamics Operating conditions

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Ferric Ion Driven Assembly of Catalase-like Supramolecular Photosensitizing Nanozymes for Combating Hypoxic Tumors

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Advanced Materials 2020年第51期59卷 23428-23438页

作者： Li, Yongxin Sun, Pan Zhao, Luyang Yan, Xuehai Ng, Dennis K. P. Lo, Pui-Chi Department of Biomedical Sciences City University of Hong Kong Tat Chee Avenue Hong Kong Kowloon China CAS Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Department of Chemistry The Chinese University of Hong Kong N.T. Hong Kong Shatin China

A facile approach to assemble catalase-like photosensitizing nanozymes with a self-oxygen-supplying ability was developed. The process involved Fe3+-driven self-assembly of fluorenylmethyloxycarbonyl (Fmoc)-protected amino acids. By adding a zinc(II) phthalocyanine-based photosensitizer (ZnPc) and the hypoxia-inducible factor 1 (HIF-1) inhibitor acriflavine (ACF) during the Fe3+-promoted self-assembly of Fmoc-protected cysteine (Fmoc-Cys), the nanovesicles Fmoc- Cys/Fe@Pc and Fmoc-Cys/Fe@Pc/ACF were prepared, which could be disassembled intracellularly. The released Fe3+ could catalyze the transformation of H2O2 enriched in cancer cells to oxygen efficiently, thereby ameliorating the hypoxic condition and promoting the photosensitizing activity of the released ZnPc. With an additional therapeutic component, Fmoc-Cys/Fe@Pc/ACF exhibited higher in vitro and in vivo photodynamic activities than Fmoc-Cys/Fe@Pc, demonstrating the synergistic effect of ZnPc and ACF. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

关键词： Self assembly

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Enhanced Mass Transfer to Suppress Nonuniform Iron Formation in Carbon-Free Low-Temperature Electrolytic Iron

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SSRN 2024年

作者： Ling, Junhao Yang, Haitao State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences P. O. Box 353 Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing100190 China

In the era of industrialization transitioning towards low-carbon solutions, low-temperature electrolytic iron technology is viewed as a key solution to the high carbon emissions and energy consumption issues faced by the smelting industry. However, in the ferrous sulfate system of electrolytic iron, there is a strong competitive reaction between hydrogen ions and iron ions on the cathode surface. The periodic evolution of hydrogen bubbles restricts mass transfer, leading to significant voltage fluctuations and decreased product quality during the electrolysis process. To address these challenges, this study optimized the flow field design by introducing shear flow to enhance bubble detachment speed and control the hydrogen evolution reaction. Finite element analysis indicated that the optimized flow field design reduced pressure drop and concentration polarization, thereby promoting electrolyte circulation. Experimental and electrochemical testing results demonstrated that the current efficiency and diffusion coefficient increased by 13.5% and 23.76%, respectively, while the solution resistance decreased by 4.6Ω. This research provides a practical and reliable technical pathway for scaling up production. © 2024, The Authors. All rights reserved.

关键词： Smelting

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Core-shell Ag-Pt nanoparticles:A versatile platform for the synthesis of heterogeneous nanostructures towards catalyzing electrochemical reactions

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Chinese Chemical Letters 2021年第11期32卷 3288-3297页

作者： Danye Liu Niuwa Yang Qing Zeng Hui Liu Dong Chen Penglei Cui Lin Xu Chaoquan Hu Jun Yang State Key Laboratory of Multiphase Complex Systems and Center of Mesoscience Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Nanjing IPE Institute of Green Manufacturing Industiy Nanjing 211100China School of Chemistry and Materials Science Jiangsu Key Laboratoiy of New Power BatteriesNanjing Normal UniversityNanjing 210023China

Heterogeneous nanostructures that are defined as a hybrid structure consisting of two or more nanoscale domains with distinct chemical compositions or physical characteristics have attracted intense efforts in recent *** this review,we focus on the introduction of a number of heterogeneous nanostructures derived using core-shell Ag-Pt nanoparticles as starting materials,including hollow,dimeric and composite structures and also highlight their application in catalyzing electrochemical reactions,e.g.,methanol oxidation reaction and oxygen reduction *** review not only shows the capability of core-shell Ag-Pt nanoparticles in producing various heterogeneous nanostructures as starting templates,but also highlights the structural design or electronic interaction that endows the heterogeneous nanostructures with enhanced catalytic properties either in methanol oxidation or in oxygen ***,we also make some perspectives for more heterogeneous nanostructures that may be prepared by using core-shell Ag-Pt particles or their derivatives so as to offer the readers the opportunities and challenges in this field.

关键词： Heterogeneous nanostructures Core-shell Electrochemical reaction Methanol oxidation reaction Oxygen reduction reaction

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A Screening Method for Dangerous Models of 3D Printed Bionic Artificial Vertebral Bodies - Finite Element Analysis 12th

A Screening Method for Dangerous Models of 3D Printed Bionic...

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12th China Academic Conference on Printing and Packaging, CACPP 2021

作者： Li, Peng Ren, Bowen Hu, Kun Yang, Zongwen Han, Zhenchuan Zhang, Guifeng Zhao, Bo State Key Laboratory of Biochemical Engineering Institute of Process Engineering CAS Beijing China Department of Orthopaedics Chinese PLA General Hospital Beijing China School of Printing and Packaging Engineering Beijing Institute of Graphic Communication Beijing China Department of Orthopedics The Fourth Medical Center Chinese PLA General Hospital Beijing China Beijing Biosis Healing Biological Technology Co. Ltd. Beijing China

ISBN: (纸本)9789811916724

Spinal tumors can occur in or around the spine and may cause defects in the anterior column of the vertebral body, spinal instability, nerve and spinal cord damage, and other symptoms. Benefiting from the rapid development of spinal internal fixation and reconstruction instruments, total spine en bloc resection is gradually being accepted by more and more spinal surgeons. In recent years, with the increasing maturity of 3D printing technology, 3D printing artificial vertebral bodies have been used clinically to reconstruct the spine. In this study, a reliable 3D printed artificial vertebral body screening program is provided, and the finite element analysis results are used to improve the artificial vertebral body design to save expensive economic and time costs. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Finite element method

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Study on Combustion Performance of Mn-Based Binary Carrier Catalyst for Ventilation Air Methane

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China Petroleum processing & Petrochemical Technology 2020年第4期22卷 26-34页

作者： Xu Xin Liu Wenge Qi Jian Yu Lei Han Jiaye Li Zhi China Coal Information Institute Beijing 100029 State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049

La-Al2O3 and Ce-Al2O3 binary monolithic column materials with dual functions of carrier and promoter were prepared in one-step by the sol-gel *** the as-synthesized binary monolithic column materials as carrier,the 9%Mn/M-Al2O3(M=La/Ce)catalyst was prepared by the impregnation *** binary carrier and catalyst were characterized by BET,SEM,XRD,H2-TPR,and O2-TPD techniques,and the methane combustion performance was tested in a micro fixed-bed *** showed that the Mn-based binary carrier catalyst with dual functions of carrier and promoter had higher catalytic activity than that with single alumina acting as the *** catalyst activity gradually increased with an increasing content of La,while there was no significant effect with the increase in Ce *** the ratio of La content in La-Al2O3 is 11%,1%of methane contained in the ventilation air can be completely converted over the 9%Mn/11%La-Al2O3 catalyst at a temperature as low as 550℃.

关键词： binary carrier catalytic combustion VAM Mn/La-Al2O3 Mn/Ce-Al2O3

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In-Situ Construction of Modified Layer on the Surface of Anion Exchange Membrane to Improve Antifouling Performance

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SSRN 2023年

作者： Cao, Renqiang Shi, Shaoyuan Duan, Feng Xu, Yang Li, Yuping Cao, Hongbin Wang, Yujie National Key Laboratory of Biochemical Engineering National Engineering Research Center of green recycling for strategic metal resources Beijing Engineering Research Centre of Process Pollution Control Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Ganjiang Innovation Academy Chinese Academy of Sciences Jiangxi Ganzhou341000 China

A new strategy combining electrodeposition with co-deposition modification was proposed to in-situ construct a stable antifouling modified layer on the AEM surface without disassembling the membrane stack. Specifically, dopamine (DA) was introduced into the electrodeposition process of poly (sodium 4-styrene sulfonate) (PSS) to co-deposit onto the AEM surface, in which the polymerization reaction could promote by supporting electrolyte (NaCl). The formation of cross-linked structure and π-π stacking effect during in-situ modification could ensure the stability of the modified layer. The in-situ modified AEM had a negatively charged and more hydrophilic surface, significantly improving the antifouling performance against organic matter (sodium dodecylbenzene sulfonate) without affecting desalination ***, it still had excellent antifouling properties after 96 h neutral rinsing. This work provided a novel approach for preventing organic fouling of AEM in ED process through surface modification. © 2023, The Authors. All rights reserved.

关键词： Sodium chloride

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Thermodynamic data of dicloxacillin sodium in six pure solvents and three binary solvents

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Journal of Molecular Liquids 2025年 424卷

作者： Li, Xunhui Huang, Xuechuan Li, Peizhou Feng, Jin Ma, Wenchan Zhang, Jiamin Wang, Na Wang, Ting Hao, Hongxun National Engineering Research Center for Industrial Crystallization Technology School of Chemical Engineering and Technology Tianjin University Tianjin300072 China Hebei Province Antibiotic Technology Innovation Center Shijiazhuang052160 China College of Chemistry and Chemical Engineering Hainan University Haikou570228 China State Key Laboratory of Chemical Engineering School of Chemical Engineering and Technology Tianjin University Tianjin300072 China Engineering Research Center of Green Refining Process Ministry of Education Tianjin University Tianjin300072 China

Solubility data of active pharmaceutical ingredients are critical in the development of the crystallization processes, and are also one of the important properties that could affect dissolution and absorption of drugs in vivo. Herein, the solubility of dicloxacillin sodium (DIC) in six pure solvents and three binary mixtures of solvents was measured by dynamic method in the temperature range of 288.15–318.15 K, and the experimental data were correlated using five different thermodynamic models. Moreover, the apparent thermodynamic properties were also explored, and the molecular simulation was applied to investigate the reasons for differences in solubility. It was found that the solubility of DIC can be influenced by both temperature and solvent composition, and it increases with increasing temperature, with the highest solubility observed in methanol, which is related to the solute–solvent interactions. The fitting results show strong consistency with the experimental data, reinforcing the robustness of these models. The apparent thermodynamic properties show that the dissolution process of DIC in the studied solvents is endothermic and entropic. © 2025

关键词： Critical temperature

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Construction of Cus/Mos2 Heterojunctions for Efficient Photocatalytic Degradation of Cr(Vi)

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SSRN 2023年

作者： Ma, Aijing Tan, Zaitian Li, Xueqian Zhang, Yiming Liu, Dan Nan, Jun Zhang, Jingcheng Sun, Yanmin Gui, Jianzhou State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Green Chemical Technology and Process Engineering School of Chemical Engineering and Technology Tiangong University Tianjin300387 China School of Chemistry Tiangong University Tianjin300387 China State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China CenerTech Tianjin Chemical Research and Design Institute Co. Ltd. Tianjin300131 China

CuS/MoS2 heterojunctions has been successfully fabricated by a facile one-step hydrothermal method. A series of characterization results proved the existence of heterointerface between CuS and MoS2. The as-obtained CuS/MoS2 heterojunctions exhibited remarkable photocatalytic performance toward the removal of Cr(VI) under visible light with k value of 1.33×10-2 min-1, obviously higher than pure CuS (2×10-4 min-1) and MoS2 (4×10-4 min-1). The enhanced photocatalytic performance was attributed to the fast photogenerated charge separation and transfer rate induced by the interfacial effect between CuS and MoS2, which were revealed by Photoluminescence spectra, Transient photocurrent responses and Electrochemical impedance tests. The cyclic activity tests showed the high photostability of the CuS/MoS2 heterojunctions. Meanwhile, the possible Cr(VI) photoreduction mechanism on CuS/MoS2 heterojunctions was reasonably proposed. © 2023, The Authors. All rights reserved.

关键词： Heterojunctions

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