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Thermostable α-Diimine Nickel Complexes with Substituents on Acenaphthequinone-backbone for Ethylene Polymerization

Chinese Journal of Polymer Science 2020年第11期38卷 1214-1220,I0007页

作者： Rui-Fang Zhang Yan-Hui Hou Xu-Ling Wei Ding-Ding Zhao Mi-Mi Cui Fei-Fan Zhai Xiang-Liu Li Bin-Yuan Liu Min Yang Hebei Key Laboratory of Functional Polymers Tianjin Key Laboratory of Chemical Process SafetyInstitute of Polymer Science and EngineeringHebei University of TechnologyTianjin 300130China State Key Laboratory of Separation Membranes and Membrane Processes School of Material Science and EngineeringTiangong UniversityTianjin 300160China Lanzhou Petrochemical Research Center Petrochemical Research Institute of CNPCLanzhou 730060China

In order to promote the thermostability of a-diimine nickel complex by ligand backbone structure,a series of α-diimine nickel complexes with substituents on acenaphthequinone backbone were synthesized and used as catalysts for ethylene *** the hydroxyethyl phenoxyl group was introduced to the acenaphthequinone-backbone,the thermal stability and activity of the catalyst could be significantly *** catalytic activity of complex C2[5-(4-(2-hydroxyethyl)phenoxyl)-N,N-bis(2,6-diisopropyl)acenaphthylene-1,2-diimine]nickel(Ⅱ)dibromide with isopropyl substituents on N-aryl reached 8.2×10^6g/(molNi·h)at 70℃and 2 *** activity of[5-(4-(2-hydroxyethyl)phenoxyl)-N,N-bis(2,6-dibenzhydryl-4-menthylphenyl)acenaphthylene-1,2-diimine]nickel(Ⅱ)dibromide(C3)still maintained at 6.7×10^5 g/(molNi·h)at 120℃.Compared with C3 containing bulky dibenzhydryl substituents,the activity of C2 was sensitive to the change of the polymerization ***,the polyethylenes obtained from complex C3 had lower branching ***,the molecular weight could reach 971 kg/mol,which is almost 5 times as much as that of the polyethylene obtained from complex C2.

关键词： α-Diimine nickel Ethylene polymerization Thermostability Ligand backbone structure

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Hollow Micro-/Nanostructure Reviving Lithium-sulfur Batteries

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Chemical Research in Chinese Universities 2020年第3期36卷 313-319页

作者： ZHAO Jilu YANG Mei Yang Nailiang WANG Jiangyan WANG Dan State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China

Higb-energy-density lhiumslu(Li-S)bttries are drawing dramatic research interests to fulill the ever-increasing demands of etrical ***,chllenges with the insulating poperty of sulfur and its lihistion products aund its large volume expansion,aund the sutle eflet of lthiumn polysulides,hinder the commer-cial application of Li-S *** of material design concepts have bocn developed to address the failure *** them,bollw micro-/anostructures with abundant compositional und geometrical feasibility have been prored fuitful in adresing the cureut obstacles of LiS bttries Here,lypical examples of designing hollw mi-co-/anostructures to address the problemns of Li-S bttries and sinultuneously improve the practical capacity and lifespan are *** purticular,the great efeet of structural engineering on minimizing volume change,inhi-biting the shutle efiet and catalyzing plysulide conversion are disussed systeatically. Fially fuure dreetions of hollow nanostrucure design to enhance the progress of Li-S butteries are also provided.

关键词： Hollow Mico-/nanostructure Lithium-ulfur buttary

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Dietary butyrate,lauric acid and stearic acid improve gut morphology and epithelial cell turnover in weaned piglets

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Animal Nutrition 2022年第4期11卷 276-282页

作者： Xianglin Zeng Yuan Yang Junmin Wang Zhaobin Wang Jun Li Yulong Yin Huansheng Yang Hunan International Joint Laboratory of Animal Intestinal Ecology and Health Animal Nutrition and Human Health LaboratorySchool of Life SciencesHunan Normal UniversityChangshaHunan 410081China Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process Key Laboratory of Agro-ecological Processes in Subtropical RegionHunan Provincial Engineering Research Center of Healthy LivestockScientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-CentralMinistry of AgricultureInstitute of Subtropical AgricultureChinese Academy of SciencesChangshaHunan 410125China State Key Laboratory of Food Safety Technology for Meat Products Yinxiang GroupFujian Aonong Biological Science and Technology Group Co.Ltd.Key Laboratory of Swine Nutrition and Feed Science of Fujian ProvinceAonong GroupZhangzhouFujian 363000China College of Pharmacy Changsha Medical UniversityChangshaHunan410219China

This study was to evaluate the effects of the supplementation of saturated fatty acids with different chain lengths on growth performance,intestinal morphology,epithelial cell proliferation,differentiation and apoptosis in weaned ***-two weaned piglets(Duroc×Landrace×Yorkshire,BW=7.81±0.26 kg)were weaned at 21 d and randomly assigned to 1 of 4 experimental treatments:(1)a basal diet(control);(2)control+0.3% butyrate(BT);(3)control+0.3%lauric acid(LA);(4)control+0.3% stearic acid(SA).All piglets were then slaughtered for tissue sampling after having been fed experimental diets for 28 d after *** of BT increased the gain-to-feed ratio(G:F)(P<0.05)compared to piglets fed the control diet from 14 to 28 *** addition,the villus height(VH)to crypt depth(CD)ratio(VH:CD ratio)of the ileum were higher in the BT and LA diets than that of the control diet(P<0.05).The SA-supplemented diet increased ileal VH(P<0.05),whereas the BT-supplemented diet increased jejunal CD(P<0.05).Compared to the control,diets supplemented with BT,LA,or SA all tended to increase jejunal proliferation(Ki67/crypt positive cells)(P=0.190);diets supplemented with BT or SA significantly increased the number of ki67-positive cells in the ileal crypt(P<0.05).Furthermore,in the jejunum,the protein expression of activated caspase 3 and villin were increased in piglets fed BT,LA,or SA diets compared to those on the control diet(P<0.05).In the ileum,compared with the control diet,the BT diet tended to increase the protein level of mammalian phosphorylation target of rapamycin(p-m TOR,P<0.10);LA or SA diets significantly increased p-m TOR protein expression(P<0.05).These results show that dietary supplementation of BT,LA,or SA promotes jejunal cell renewal in weaned *** the same time,increased proliferation of ileal crypt cells by promoting p-m TOR expression has beneficial effects on ileal morphology in weaned piglets.

关键词： Weaned piglet Saturated fatty acid Growth performance Intestinal morphology Proliferation

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Phase Transfer-Assisted Synthesis of Indium-Based Nanomaterials from Spent Liquid Crystal Display Panels for High-Efficiency Co2 Electrochemical Reduction

SSRN

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SSRN 2024年

作者： Wu, Yufeng Ren, Zhiyuan Liu, Hui Guo, Feng Tian, Shaonan Yang, Jun Institute of Circular Economy Beijing University of Technology Beijing100124 China Faculty of Materials and Manufacturing Beijing University of Technology Beijing100124 China State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

Transforming discarded electronic devices into low-cost and high-efficiency catalysts presents a win-win approach to address the scarcity of rare resources and sustainable energy challenges. Herein, we report an effective strategy that combines an ethanol-mediated dodecylamine (DDA) phase transfer with hydrothermal methods for facilitating the facile synthesis of indium (In)-based nanomaterials from the leachates of liquid crystal display panels (LCDPs) toward high-efficiency electrochemical CO2 reduction reaction (eCO2RR). In this strategy, the rapid formation of coordinating compounds between the -NH2 group of DDA and metal ions facilitates the separation of In3+ cations from the acidic LCDP leach solution by transferring them into an organic phase, which are then converted into InOOH nanoparticles with abundant oxygen vacancies (denoted as In-LCDPs and hereafter) through a low-temperature hydrothermal process. The eCO2RR evaluations confirm the superior electrocatalytic performance of the In-based nanoparticles produced from the LCDPs. In specific, within a broad potential range (-0.77 to -1.17 V vs. RHE), the In-LCDPs show a Faradaic efficiency for formate (FEformate) of 85%, with the highest FEformate of 90.23% at -0.97 V vs. RHE, which is comparable to the FEformate (93.8% at -0.97 V vs. RHE) of In-based catalyst prepared from pure In precursors using the same method. Further investigations reveal that the Sn and Al impurities have minimal impact on the catalytic performance of In-LCDPs, while the presence of Fe3+ impurities significantly enhances the production of hydrogen during the eCO2RR. This work might have provided a scalable pathway to transform LCDPs into value-added electrocatalysts for eCO2RR. © 2024, The Authors. All rights reserved.

关键词： Metal ions

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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

SSRN

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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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Improvement of Waste Sludge Dewaterability by a Novel Co-Conditioning Approach with Polyaluminum Chloride-Sludge Based Carbon-Polyacrylamide

SSRN

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SSRN 2023年

作者： Liu, Taishan Zhang, Xinyang Ding, Guangchao Li, Songgeng State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Department of Civil & Environmental Engineering National University of Singapore 1 Engineering Drive 2 117576 Singapore

A novel sludge conditioning method incorporating sludge-based carbon (SBC) as a filter aid into the coagulation and flocculation co-conditioning process is proposed to strengthen sludge dewaterability, namely the co-conditioning of polyaluminum chloride (PAC)-SBC-polyacrylamide (PAM). The results show that the co-conditioning method can effectively reduce the specific resistance to filtration (SRF), moisture content (MC) of the filter cake and sludge compressibility coefficient (CC), meanwhile increase the net sludge solids yield (YN) of municipal sludge (MS) and textile dyeing sludge (TDS), resulting in a significant improvement in sludge dewatering performance for two types of sludge. The response of sludge dewatering performance to different conditioning agents and the variation characteristics of sludge EPS in co-conditioning process suggest that the co-conditioning mechanism involves a synergistic effect of coagulation, adsorption, and flocculation, which process includes the aggregation and disintegration of microbial cell flocs caused by PAC, the skeleton-building action and biopolymer adsorption by SBC, and sludge floc agglomeration facilitated by PAM. In addition, SBC also optimizes coagulation by electrostatic neutralization, while strengthening flocculation by bridging biopolymers and PAM. Moreover, co-conditioning exhibits a remarkable ability to eliminate dissolved organic matter from the filtrate, leading to an enhancement in the filtrate quality and a reduction in the downstream burden for sludge filtrate treatment. Consequently, the PAC-SBC-PAM co-conditioning emerges as a promising method for sludge pretreatment. © 2023, The Authors. All rights reserved.

关键词： Flocculation

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Two-Dimensional Broad Learning System for Data Analytic

IEEE Transactions on Artificial Intelligence

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IEEE Transactions on Artificial Intelligence 2021年第6期2卷 594-607页

作者： Dai, Wei Zhang, Rui Wang, Qianjin Cheng, Yuhu Wang, Xuesong The Engineering Research Center of Intelligent Control for Underground Space Ministry of Education China University of Mining and Technology Xuzhou221116 China The School of Information and Control Engineering China University of Mining and Technology Xuzhou221116 China The State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang110819 China The School of Electrical Engineering Yancheng Institute of Technology Yancheng221051 China

Recently, a novel learning algorithm called the broad learning system (BLS) has been established by using the theory of pseudoinverse and compressed sensing technology. As an alternative to deep learning, BLS has gained extensive attention in data analytics. Unlike the existing deep structures based learning tools (such as deep neural networks), it is able to rapidly achieve incremental learning, and does not require tedious retraining to remodel the system. However, given image data modeling tasks, 1-D BLS requires a conventional vectorization operation, the dimension of input will be quite large for high resolution image. This operation may result in huge computational complexity, thereby increasing the time of model construction. To resolve this issue, a 2-D version of BLS, namely 2-D-BLS, is first proposed to fast construct randomized learner models by using matrix inputs. Specifically, the proposed method employs left and right projecting vectors to replace the usual high dimensional input weight. Moreover, the theoretical analyses on the superiority of 2-D-BLS against BLS are presented in terms of the algorithm complexity and the difference of random parameter space. Empirical results on MNIST dataset, NORB 3-D object image recognition dataset, ORL dataset, YaleB dataset, and handwritten digit dataset demonstrate that the proposed 2-D-BLS outperforms the existing extensions of BLS and state-of-the-art 2-D machine learning methods in terms of the learning efficiency, showing good potential of 2-D-BLS for image data analytics. Impact statement-as a novel learning tool, BLS has achieved great success in many fields. Image recognition is one of the most widely used fields of artificial intelligence. But, BLS is a 1-D model, the vectorization operation is necessary to convert matrix input data into a row or a column vector. This operation will lead to "explosion of dimensionality" and increase the time of model construction when it is coming to image data analytic

关键词： Learning systems

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Stable and Efficient Perovskite Photovoltaics via a Three-In-One Passivating Approach by Aminoacetonitrile Hydrochloride

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Advanced Energy Materials 2025年第20期15卷

作者： Liu, Yinjiang Kong, Tengfei Zhang, Yang Zhao, Zihan Chen, Weiting Liu, Wenli Gao, Peng Wang, Xu-Dong Bi, Dongqin State key laboratory of optoelectronic materials and technology Guangdong Provincial Key Laboratory of low carbon chemistry and process energy conservation School of Materials Science and Engineering Sun Yat-sen University Guangzhou510275 China Laboratory for Advanced Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institute Chinese Academy of Sciences Xiamen361021 China Yanyang Energy Inc Xiamen361021 China MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University Guangzhou510275 China

Reducing defect density is of significant importance for enhancing the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs). While most previous outstanding studies have focused on individual layers within the perovskite device structure. Herein, a three-in-one strategy using the aminoacetonitrile hydrochloride (AmiHCl) molecule to reduce the defects in the bulk and surface of perovskite. The results of the study found that the AmiHCl bottom modification can decrease the number of buried interface holes, doping into bulk perovskite can modulate crystallization via a strong interaction between AmiHCl and perovskite components, and the upper interface modification can inhibit the formation of vacancies by creating hydrogen bonds with A-site cations. This approach yields PSCs with an efficiency of 25.90% and a high fill factor (FF) of 88.54%. Additionally, the modified PSCs show significantly enhanced operational stability, with the PCE retaining more than 90.0% of the initial value after 1350 h of maximum power point tracking. © 2025 Wiley-VCH GmbH.

关键词： Perovskite

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Distributed Feedback Optimization of Networked Nonlinear Systems Using Relative Output Measurements*

Distributed Feedback Optimization of Networked Nonlinear Sys...

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European Control Conference (ECC)

作者： Zhengyan Qin Tao Liu Tengfei Liu Zhong-Ping Jiang Department of Electrical and Electronic Engineering The University of Hong Kong Hong Kong HKU Shenzhen Institute of Research and Innovation Shenzhen China State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang China Department of Electrical and Computer Engineering New York University Brooklyn NY USA

ISBN: (数字)9783907144107

ISBN: (纸本)9798331540920

This paper investigates the distributed feedback optimization problem of nonlinear multi-agent systems. In such systems, each agent can measure the relative outputs between itself and its neighbors but lacks access to their absolute states and internal controller states. By combining distributed optimization and singular perturbation methods, a novel distributed controller design is presented, that relies solely on each agent's real-time gradient values of its local objective function and its relative output measurements to neighboring agents. The boundedness of the closed-loop signals and the convergence of the agent outputs to the minimizer of the total cost are proved rigorously. A numerical example is conducted to validate the effectiveness of the proposed approach.

关键词： Costs Perturbation methods Europe Distributed feedback devices Linear programming Real-time systems Nonlinear systems

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Study on mass transfer of ethyl acetate in polymer adsorbent by experimental and theoretical breakthrough curves

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Chinese Journal of Chemical engineering 2020年第1期28卷 84-89页

作者： Lina Wang Jiale Zheng Lin Du Songgeng Li Wenli Song State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Sino-Danish College University of Chinese Academy of SciencesBeijing 100190China

A new polymeric adsorbent with highly hypercrosslinked structure was developed for the removal of VOCs from polluted air. The purpose of this work is to obtain the intraparticle mass transfer coefficient of the adsorbent particles. Adsorption experiments for obtaining breakthrough curves were carried out with a fixed bed system. A dynamic mathematical model for the fixed bed adsorption system was *** model fitting, the overall mass transfer coefficient was determined when the deviation error was minimum. Then, the intraparticle mass transfer coefficient of the adsorbent was determined when the external mass transfer resistance was eliminated at higher velocities. Furthermore, a linear relationship of the intraparticle mass transfer coefficient and equilibrium coefficient at lower inlet gas concentrations range was correlated. Moreover, an equation for predicting external mass transfer coefficient at low Reynolds number range at room temperature was obtained.

关键词： Mass transfer Adsorption Fixed-bed Mathematical modeling Kinetics

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