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Green Energy & Environment 2023年第2期8卷 519-529页

作者： Xiaowen Guo Haihong Wu Peng Wu Mingyuan He Yejun Guan Shanghai Key Laboratory of Green Chemistry and chemical processes East China Normal UniversityNorth Zhongshan RoadShanghai3663China Institute of Eco-Chongming East China Normal UniversityCuiniao Rd.20ShanghaiChina

Furfuryl ethers have been considered to be a promising fuel *** step reduction etherification of furfural over supported Pd catalysts provides a facile way for the preparation of furfuryl ***,the preparation of a reusable Pd catalyst for reductive etherification remains to be a great *** this study,a series of Si O_(2)supported Pd catalysts with particle size ranging from 2.2 nm to 28 nm were *** textural properties and catalytic performance in furfural reductive etherification have been systematically *** results herein shed light on the particle size effect on the competition between hydrogenation/hydrogenolysis of C=O in furfural over Pd *** found out that Pd nanoparticles larger than 3 nm are preferred for one step reductive *** on this finding,we prepared a Pd/ZSM-5 bifunctional catalyst comprising Pd nanoparticles larger than 3 nm and decreased acidity in presence of amino organosilane,which served as a bifunctional catalyst succeeding in one-pot synthesis of ether via reductive-etherification and *** strategy showed significant advantage in efficiently converting furfuryl acohol,a major side-product,into ether,while suppressing the undesired side-reactions.

关键词： Etherification Furfural Palladium Zeolite Amino organosilane

Influence of Pd deposition pH value on the performance of Pd-CuO/SiO_(2) catalyst for semi-hydrogenation of 2-methyl-3-butyn-2-ol(MBY)

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Chinese chemical Letters 2022年第1期33卷 349-353页

作者： Jiamin Xu Xiaowen Guo Yejun Guan Peng Wu Shanghai Key Laboratory of Green Chemistry and chemical processes East China Normal UniversityShanghai 200062China

The selective hydrogenation of C≡C to C=C bonds is an important step,yet remains to be a great challenge in chemical *** this study,we have revealed the influence of Pd deposition pH value on the catalytic performance of Pd-CuO/SiO_(2)catalyst for the semi-hydrogenation of 2-methyl-3-butyn-2-ol(MBY).Trace amount of Pd(about 500 ppm)was loaded via deposition-reduction method on CuO/SiO_(2)support by using H_(2)PdCl_(4) solution as precursor and NaBH_(4)as reductant,*** pH value at which Pd was deposited was adjusted to about 5 and 7 by adding NaOH *** obtained catalysts were characterized by several techniques including XRD,TEM,H_(2)-TPR,*** the case of pH value of 5,the CuO was partially dissolved during the deposition and then co-reduced with Pd^(2+)by NaBH_(4),forming PdCu alloy structure in *** contrast,no PdCu alloy structure was observed when pH value was *** kinetics of MBY semi-hydrogenation over both catalysts were *** former PdCu alloy catalyst showed very high selectivity towards the semi-hydrogenation of MBY due to its low activity in hydrogenation of C=C bond in 2-methyl-3-buten-2-ol(MBE).The results herein demonstrated that the pH value where Pd was deposited played a crucial role in determining the catalytic performance of PdCu catalyst.

关键词： Alkynols Palladium Semi-hydrogenation Alloy Copper

Application of Kernel Independent Component Analysis for Multivariate Statistical Process Monitoring

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Journal of Donghua University(English Edition) 2009年第5期26卷 461-466页

作者：王丽侍洪波 Research Institute of Automation East China University of Science and Technology

In this research, a new fault detection method based on kernel independent component analysis （kernel ICA） is developed. Kernel ICA is an improvement of independent component analysis （ICA）, and is different from kernel principal component analysis （KPCA） proposed for nonlinear process monitoring. The basic idea of our approach is to use the kernel ICA to extract independent components efficiently and to combine the selected essential independent components with process monitoring techniques. 12 （the sum of the squared independent scores） and squared prediction error （SPE） charts are adopted as statistical quantities. The proposed monitoring method is applied to Tennessee Eastman process, and the simulation results clearly show the advantages of kernel ICA monitoring in comparison to ICA monitoring.

关键词： process monitoring fault detection kernelindependent component analysis

Photoacoustic imaging-guided chemo-photothermal combinational therapy based on emissive Pt(Ⅱ)metallacycle-loaded biomimic melanin dots

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Science China Chemistry 2021年第1期64卷 134-142页

作者： Chonglu Li Pei-Pei Jia Yu-Ling Xu Feng Ding Wen-Chao Yang Yao Sun Xiao-Peng Li Guang-Qiang Yin Lin Xu Guang-Fu Yang Key Laboratory of Pesticide&chemical Biology Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079China Shanghai Key Laboratory of Green Chemistry and chemical processes School of Chemistry and Molecular EngineeringEast China Normal University.Shanghai 200062China Department of Chemistry University of South FloridaTampa 33620USA

Pt(Ⅱ)-based metallacycles,as an important family of supramolecular coordination complexes(SCCs),have exhibited excellent antitumor activity at the cell ***,the biomedical applications of Pt(Ⅱ)-based metallacycles for animal studies are still hindered by their poor stability,non-targeted tumour,and lack of detectable feedback for evaluating therapeutic ***,we propose a strategy that introduces melanin dots as a biomedical platform to load bright-emission Pt(Ⅱ)-based metallacycles,thereby constructing a theranostic agent that enables photoacoustic imaging(PAI)-guided chemo-photothermal combinational *** dots act as a protective carrier to preserve the integrity of Pt(Ⅱ)-based metallacycles before uptake by tumour ***,the PAI signal from melanin dots furnishes more comprehensive information on the ***,the heat generated after NIR laser irradiation can not only trigger the apoptosis of tumour cells but also promote the deeper penetration of Pt(Ⅱ)-based SCCs into tumour tissue,thus enhancing the efficiency of chemotherapy.

关键词： metallacycles supramolecular coordination complexes chemo-photothermal therapy photoacoustic imaging melanin dots

Catalytic transfer hydrogenolysis of C–O bonds in lignin model compounds without arene hydrogenation

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Green chemical Engineering 2022年第1期3卷 25-33页

作者： Kai Cui Xiuge Zhao Qingpo Peng Honghui Gong Xinjia Wei Jiajia Wang Manyu Chen Zhenshan Hou Key Laboratory for Advanced Materials Research Institute of Industrial CatalysisSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China

The shortage of resources and the destruction of the environment have caused serious resource and environmental problems shared by all countries around the world. As a ubiquitous renewable resource, biomass has great prospects for replacing fossil energy and attracted attention from the society. The use of catalytic approach to transform biomass into high-value chemicals is an effective way to use biomass efficiently. In this work, Nisupported catalysts has been developed for the selective cleavage of C–O bonds in lignin model compounds with 2-propanol as the hydrogen source solvent. Among these catalysts, it was indicated that zirconium phosphate(Zr P)-supported Ni catalysts were highly efficient and recyclable for alkyl-aryl ether(α-O-4 and β-O-4) cleavage in lignin model compounds. The further investigation demonstrated that the transfer hydrogenolysis of the C–O bond is highly selective, which afforded phenols and aromatics as dominant products without the products arising from hydrogenation of aromatic rings. Through a series of characterization of the catalyst, it was demonstrated that the medium strong acid sites of the Zr P support promoted the cleavage of alkyl-aryl ethers(α-O-4 and β-O-4),and Br?nsted acid sites favored for achieving high selectivity toward C–O bond cleavage. Additionally, Ni(0) sites on the Zr P catalysts were responsible for the catalytic transfer hydrogenolysis.

关键词： C–O bond cleavage Hydrogenolysis Zirconium phosphate Biomass conversion Ni catalysts

Multi-fluid modeling of density segregation in a dense binary fluidized bed

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Particuology 2012年第1期10卷 62-71页

作者： Zhongxi Chao Yuefa Wang Jana P. Jakobsen Maria Fernandino Hugo A. Jakobsen Department of chemical Engineering NTNU Trondheim 7491 Norway SINTEF Energy Trondheim 7491 Norway Department of Energy and Process Engineering NTNU Trondheim 7491 Norway

This paper presents simulation results of the density segregation in a dense binary gas fluidized bed using a multi-fluid model from Chao et al. （2011）, The segregation behavior of two types of particles with approximately same particle diameters and different particle densities was studied and validated using the experimental data from Formisani et al, （2008）. Some detailed information regarding the gas, particle velocity profiles, the distributions of the particle volume fractions and the flotsam-to-total par- ticle volume fraction ratios is presented. The simulation results show that the simulated axial average flotsam-to-total particle volume fraction ratio distribution agrees reasonably with the experimental data of Formisani et al. （2008）. The binary particle velocities are closely coupled though the segregation exists, The segregation behavior and the particle velocity profiles are superficial gas velocity dependent. The number and distribution of particle velocity vortices change dramatically with superficial gas velocity： at a comparatively low superficial gas velocity, the particles mainly segregate axially, and at a comparatively high superficial gas velocity, the particles segregate both axially and radially.

关键词： Fluidized bedBinary flowDensity segregationMulti-fluid modelGranular flow

CHARACTERISTICS OF ENVIRONMENTAL AND CLIMATE CHANGE IN CHANGJIANG DELTA AND ITS POSSIBLE MECHANISM

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Acta meteorologica Sinica 2000年第2期14卷 129-140页

作者：陈隆勋朱文琴周秀骥 Chinese Academy of Meteorological Sciences Beijing 100081

Characteristics of climate change in the Changjiang Delta were analyzed based on the annual mean meteorological data since 1961,including air temperature,maximum and minimum air temperature,precipitation,sunshine duration and visibility at 48 stations in that area(southern Jiangsu and northern Zhejiang),and its adjacent areas(northern Jiangsu,eastern Anhui and southern Zhejiang),together with the environmental *** results indicate that it is getting warmer in the Changjiang Delta and cooler in adjacent areas,thus the Changjiang Delta becomes a big heat island,containing many little heat islands consisting of central cities,in which Shanghai City is the strongest heat *** intensity of heat islands enhances as economic development goes up. From the year *** beginning year of reform and opening policy,to the year 1997,the intensity of big heat island of Changjiang Delta has increased 0.5℃ and Shanghai heat island increased 0.8℃. *** 1978 the constituents of SO_2,NO_x and TSP(total suspended particles)in the atmosphere,no matter whether in the Changjiang Delta or in the adjacent areas,have all increased, but pH values of precipitation *** the meantime,both sunshine duration and visibility are also decreased,indicating that there exists a mechanism for climate cooling in these *** analyses show that the mechanism for climate warming in the Changjiang Delta may be associated with heating increase caused by,economic development and increasing energy *** is estimated that up to 1997 the intensity of warming caused by this mechanism in the Changjiang Delta has reached 0.8—0.9℃,about 4—4.5 times as large as the mean values before *** then, the increase rate has become 0. 035℃/a for the Changjiang *** has reached 1.3℃ for Shanghai in 1997,about 12—13 times as large as the mean values before *** is a rough estimation of increasing energy consumption rate caused by economic development.

关键词： climate change urban heat island economic development human activity Changjiang Delta

Efficient Pd-Catalyzed C-H Oxidative Bromination of Arenes with Dimethyl Sulfoxide and Hydrobromic Acid

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Chinese Journal of Chemistry 2020年第11期38卷 1245-1251页

作者： Yizhi Yuan Yujie Liang Shihui Shi Yu-Feng Liang Ning Jiao State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityXue Yuan Rd.38Beijing 100191China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200062China

of main observation and conclusion We have developed an efficient Pd-catalyzed directed C-H bromination protocol,in which dimethyl sulfoxide(DMSO)is employed as oxidant with hydrobromic add aqueous solution(HBr(aq))as bromide *** DMSO/HBr(aq)system,which is novelly and efficiently utilized in transition-metal catalyzed C-H activation,illustrates its practicability by the operational simplicity,inexpensive and readily available starting materials,and high bromide-atom economy.

关键词： catalyzed bromide simplicity

高活性、可循环的Pt-Cu@3D石墨烯复合催化剂的制备和催化性能（英文）

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物理化学学报 2017年第6期33卷 1230-1235页

作者：王美淞邹培培黄艳丽王媛媛戴立益华东师范大学化学与分子工程学院上海200241

以氧化石墨烯为前驱体,通过氧化还原法制备了具有三维大孔稳定结构的Pt-Cu@3D石墨烯催化剂。作为载体,三维石墨烯的宏观大孔结构具有大比表面积,可以更好地促进催化反应中的传质过程。以对硝基苯酚的还原为模型反应,通过实验确定Pt与Cu... 详细信息

以氧化石墨烯为前驱体,通过氧化还原法制备了具有三维大孔稳定结构的Pt-Cu@3D石墨烯催化剂。作为载体,三维石墨烯的宏观大孔结构具有大比表面积,可以更好地促进催化反应中的传质过程。以对硝基苯酚的还原为模型反应,通过实验确定Pt与Cu的最佳质量比为3:5,利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、X射线衍射(XRD)和能量色散X射线光谱(EDX)等方法对最优催化剂的结构进行了表征。催化测试表明复合催化剂在对硝基苯酚还原反应中具有高效稳定、低成本、可循环的良好性能。

关键词：三维石墨烯 Pt-Cu纳米颗粒催化反应孔结构复合材料

A Facile One-Step Synthesis of TiOe/Graphene Composites for Photodegradation of Methyl Orange

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Nano Research 2011年第3期4卷 274-283页

作者： Haijiao Zhang Panpan Xu Guidong Du Zhiwen Chen Kokyo Oh Dengyu Pan Zheng Jiao Institute of Nanochemistry and Nanobiology School of Environmental and Chemical Engineering Shanghai University Shanghai 200444 China Center for Environmental Science in Saitama 914 Kamitanadare Kazo Saitama Japan

TiO2/graphene composite photocatalysts have been prepared by a simple liquid phase deposition method using titanium tetrafluoride and electron beam （EB） irradiation-pretreated graphene as the raw materials. The products were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis. The effects of varying the synthesis parameters such as graphene content, concentration of titanium tetrafluoride solution and irradiation dose were investigated. It was found that the preparation conditions had a significant effect on the structure and properties of the final products. The irradiated graphene was covered with petal-like anatase TiO2 nanoparticles, which were more uniform and smaller in size than those in products synthesized without EB irradiation-pretreated graphene. The photocatalytic activities of the products were evaluated using the photocatalytic degradation of methyl orange as a probe reaction. The results showed that the products synthesized using EB irradiation-pretreated graphene exhibited higher photocatalytic activities than those using graphene without EB irradiation pretreatment.

关键词： TiO2/graphene composites electron beam (EB) irradiation photocatalytic degradation methyl orange