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Science China(Technological Sciences) 2020年第10期63卷 2098-2112页

作者： wang manman FAN BaoMin WEN BianYing JIANG Chao School of Materials Science and Mechanical Engineering Beijing Technology and Business UniversityBeijing 100048China

Most porous materials with high specific surface area and diverse internal structures possess good adsorption *** this work,a tremella-like mesoporous calcium silicate hydrate(CSH)with high adsorption capacity was successfully prepared via a facile hydrothermal *** adsorption effect and adsorption mechanism of the as-prepared calcium silicate hydrate(APCSH)towards formaldehyde from water were investigated *** indicate that AP-CSH has high Ca/Si ratio(1.95),large specific surface area(122.83 m2 g-1)and exhibits excellent adsorption *** results of batch adsorption experiments show that AP-CSH can remove formaldehyde from water rapidly and effectively with the maximum removal efficiency of 98.94%.The adsorption process agrees well with the pseudo-second-order and Freundlich isotherm ***,regeneration can be achieved by simply immersing AP-CSH in absolute ethanol and the removal efficiency can still reach about 99.50%after five *** adsorption mechanism was also studied by experimental analyses and molecular dynamics *** experimental results and theoretical simulation support that formaldehyde adsorption over AP-CSH belongs to chemical adsorption.

关键词： chemical adsorption mechanism molecular dynamics simulation mesoporous calcium silicate formaldehyde

Crystal structure and thermal decomposition kinetics of1-(pyridinium-1-yl)propane-(1-methylpiperidinium)bi[bis(trifluoromethanesulfonyl)imide], [PyC_3Pi][NTf_2]_2

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Chinese Journal of Chemical Engineering 2015年第5期23卷 816-821页

作者： Jun wang manman wang Xuzhao Yang Wenyuan Zou Xiang Chen Henan Provincial Key Laboratory of Surface & Interface Science Zhengzhou University of Light Industry

The structure of a room temperature asymmetrical dicationic ionic liquid （ADIL）, 1-（pyridinium-l-yl） propane- （1-methylpiperidinium） bi[bis（tfifluoromethanesulfonyl）imide] （[PyC3Pi][NTf2]2）, was studied by the X-ray difo fraction method. Meanwhile, thermal analysis of [PyC3Pi][NTf2]2 was also studied using non-isothermal thermo- gravimetric analysis （TGA）. The title crystal belongs to the triclinic with space group Pi and unit-cell parameters a ： 0.95217 （8） nm, b = 1.05129 （11 ） nm, c = 1.70523 （14） nm, ct = 89,759 （8）°,β = 80.657 （7）°, γ=68.007 （9）°, and F（000） = 792. Thermal stability and thermal decomposition kinetics of the title compound were also investigated using TGA under the atmosphere of highly pure nitrogen. Heating curves at different rates were cor- related with kinetic equations Friedman and ASTM （also called iso-conversion method）. The values of average activation E （kJ·mol^-1 ） and pre-exponential constant lgA are 149.58 kJ. mol- 1 and 8.83, respectively, which were obtained by the two methods. The kinetic model function, activation energy and pre-exponential constant of this reaction using the multivariate non-linear-regression method were f（a） = （1 -a）（1 ＋ 4.1870a）, 151.04 kJ·mol^-1 and 8.81, respectively, which were basically consistent with iso-conversion methods.

关键词： Asymmetrical dicationic ionic liquid Crystal structure Decomposition kinetics

A Tremella-like Mesoporous Calcium Silicate Loaded by TiO_(2) with Robust Adsorption and Photocatalytic Degradation Capabilities

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Journal of Wuhan University of Technology(Materials Science) 2022年第2期37卷 184-193页

作者： JIANG Chao WEN Bianying FAN Baomin wang manman College of Chemistry and Materials Engineering Beijing Technology and Business UniversityBeijing 100048China

A titanium dioxide loaded tremella-like mesoporous calcium silicate hydrate(TiO_(2)@CSH)with both adsorption and photocatalytic degradation activity was successfully prepared by a hydrothermal method combined with sol-gel strategy in two steps in this ***-shaped CSH provides abundant active sites for accommodating of TiO_(2),thus the corresponding TiO_(2)@CSH achieved a high loading ratio of 36.73%.Such a special shaped TiO_(2)@CSH exhibits excellent pre-enrichment capacity and photocatalytic degradation capacity for organic *** A(BPA)removal experiments show that TiO_(2)@CSH can remove 91.17%of BPA from aqueous *** on removal mechanism suggest that BPA tends to bind on the interface between CSH and TiO_(2) and the pre-enrichment process conforms to the intraparticle diffusion model;and then,it is decomposed to harmless substances of CO_(2) and H_(2)O during the photocatalytic *** experimental results show that loading functional nanoparticles such as TiO_(2) on the surface of inorganic porous materials can endow inert porous materials with new functions such as photocatalytic degradation,which effectively expands the application range of inorganic porous materials.

关键词： TiO_(2)@CSH adsorption photocatalytic degradation synergetic mechanism

Experimental study on gas–liquid dispersion and mass transfer in shear-thinning system with coaxial mixer

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Chinese Journal of Chemical Engineering 2018年第9期26卷 1785-1791页

作者： Baoqing Liu Yijun Zheng Ruijia Cheng Zilong Xu manman wang Zhijiang Jin Institute of Process Equipment College of Energy Engineering Zhejiang University

The effects of impeller type, stirring power, gas flow rate, and liquid concentration on the gas–liquid mixing in a shear-thinning system with a coaxial mixer were investigated by experiment, and the overall gas holdup, relative power demand, and volumetric mass transfer coefficient under different conditions were compared. The results show that, the increasing stirring power or gas flow rate is beneficial in promoting the overall gas holdup and volumetric mass transfer coefficient, while the increasing system viscosity weakens the mass transfer in a shearing–thinning system. Among the three turbines, the six curved-blade disc turbine(BDT-6) exhibits the best gas pumping capacity; the six 45° pitched-blade disc turbine(PBDT-6) has the highest volumetric mass transfer coefficient at the same unit volume power.

关键词： Non-Newtonian fluids Coaxial mixer Gas holdup Relative power demand Mass transfer

A Highly Efficient and Selective Water-Soluble Bimetallic Catalyst for Hydrogenation of Chloronitrobenzene to Chloroaniline

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China Petroleum Processing & Petrochemical Technology 2015年第2期17卷 26-31页

作者： Zhou Yafen Yang Wenjuan Zhou Limei wang manman Ma Xiaoyan Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering China West Normal University College of Materials and Chemistry & Chemical Engineering Chengdu University of Technology

Selective hydrogenation of chloronitrobenzene(CNB) to chloroaniline(CAN) catalyzed by water-soluble Ru/Pt bimetallic catalyst in an aqueous-organic biphasic system was studied. It was found that the catalytic activity increased obviously due to the addition of platinum. Ru/Pt bimetallic catalysts exhibited a strong synergistic effect when the molar ratio of Pt was in the range of 5%—80%. Under the mild conditions including a temperature of 25 ℃, a hydrogen pressure of 1.0 MPa and a Pt molar ratio of 20%, the conversion of p-chloronitrobenzene(p-CNB) reached 99.9%, with the selectivity to p-chloroaniline(p-CAN) equating to 99.4%. The Ru/Pt catalyst also showed high activity and selectivity for the hydrogenation of other chloro- and dichloro-nitrobenzenes with different substituted positions. In addition, the catalyst can be recycled five times without significant loss of activity.

关键词： water-soluble bimetallic catalyst hydrogenation chloronitrobenzene chloroaniline

Accumulation of carotenoids and expression of carotenoid biosynthesis genes in fruit flesh during fruit development in two Cucurbita maxima inbred lines

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Horticultural Plant Journal 2021年第6期7卷 529-538页

作者： Yusong Luo Chaojie wang manman wang Yunli wang Wenlong Xu Hongyu Han Zhichao wang Yujuan Zhong Hexun Huang Shuping Qu Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(Northeast Region) Ministry of Agriculture and Rural Affairs/Northeast Agricultural UniversityHarbin150030China College of Horticulture and Landscape Northeast Agricultural UniversityHeilongjiangHarbin150030China Vegetable Research Institute Guangdong Academy of Agricultural SciencesGuangzhou 510640China

Mesocarp color is an important agronomic trait of Cucurbita maxima and is determined mainly by the contents and compositions of the *** two inbred lines with significant differences in fruit flesh color were used in the study,the orange’312-1’and white’98-2’.Changes in seven carotenoid contents and compositions in the flesh of fruit produced by inbred lines’312-1’and’98-2’were analyzed during fruit *** expression of eight key carotenoid biosynthesis genes in the fruit flesh were investigated during five fruit development stage in two inbred *** the flesh color intensified,the orange flesh color of’312-1’was determined mainly by the increased contents of lutein,β-carotene and zeaxanthin and the lack of carotenoid accumulation led to the formation of white flesh in’98-2’*** expression of the LCY-e and CHYb genes was significantly stronger in’312-1’than in’98-2’,and their expression was strongly correlated with lutein andβ-carotene contents during fruit *** study provides a deep understanding of the molecular mechanism of carotenoid biosynthesis in fruit flesh and provides a basis for additional studies on the highly refined improvement of squash quality.

关键词： Cucurbita maxima Flesh color Lutein β-carotene Zeaxanthin

Promotional Effect of CoO(OH) on Selective Hydrogenation of Maleic Anhydride to γ-Butyrolactone over Supported Ruthenium Catalyst

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China Petroleum Processing & Petrochemical Technology 2015年第4期17卷 96-101页

作者： Zhou Yafen wang Qing wang manman Yang Wenjuan Zhou Limei Ma Xiaoyan Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering China West Normal University College of Materials and Chemistry & Chemical Engineering Chengdu University of Technology

A decorated ruthenium catalyst was prepared by the coprecipitation method and used for the selective hydrogenation of maleic anhydride(MA) to γ-butyrolactone(GBL). The as-prepared catalyst was characterized by XRD, TGDTG and N2 adsorption techniques. The characterization tests revealed that the catalyst carrier was composed of monoclinic zirconia(m-ZrO2) and hydroxyl cobalt oxide(CoO(OH)). The hydrogenation results showed that the content of CoO(OH), the reaction temperature, the hydrogen pressure and the reaction time significantly affected the catalytic selectivity to GBL. The promotional effect of CoO(OH) was remarkable, which led to an obvious increase in GBL selectivity. An 100% MA conversion and 92.0% selectivity to GBL were achieved over the Ru/ZrO2-CoO(OH)(35%) catalyst in water solvent under the conditions involving a reaction temperature of 180 ℃, a hydrogen pressure of 3.0 MPa, and a reaction time of 6 h.

关键词： ruthenium catalyst hydrogenation maleic anhydride γ-butyrolactone

A review of systematic evaluation and improvement in the big data environment

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Frontiers of Engineering Management 2020年第1期7卷 27-46页

作者： Feng YANG manman wang School of Management University of Science and Technology of ChinaHefei 230026China

The era of big data brings unprecedented opportunities and challenges to management *** one of the important functions of management decision-making,evaluation has been given more functions and application *** the applicable evaluation methods in the big data environment has become an important subject of *** purpose of this paper is to provide an overview and discussion of systematic evaluation and improvement in the big data *** first review the evaluation methods based on the main analytic techniques of big data such as data mining,statistical methods,optimization and simulation,and deep *** on the characteristics of big data(association feature,data loss,data noise,and visualization),the relevant evaluation methods are ***,we explore the systematic improvement studies and application ***,we analyze the new application areas of evaluation methods and give the future directions of evaluation method research in a big data environment from six *** hope our research could provide meaningful insights for subsequent research.

关键词： big data evaluation methods systematic improvement big data analytic techniques data mining

Copper-catalyzed amination of phenylboronic acids with benzofurazan 1-oxides

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Chinese Journal of Catalysis 2017年第11期38卷 1842-1850页

作者： manman wang Yunyun Li Fen wang Xingwei Li Henan Key Laboratory of Organic Functional Molecule and Drug Innovation Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453007 Henan China Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 Liaoning China

CuCl/Phen can catalyze the C–N coupling between arylboronic acid and benzofurazan1‐*** reaction occurred under mild and redox‐neutral conditions with benzofurazan1‐oxide as an aminating reagent via ring scission,l... 详细信息

关键词： C–N coupling Arylboronic acid Benzofurazan 1‐oxide Redox‐neutral Bifunctional

钯/Xu-Phos催化对映选择性多米诺Heck/远程C(sp^(2))—H烷基化反应合成手性螺环化合物

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有机化学 2022年第5期42卷 1569-1571页

作者：王曼曼河南师范大学化学化工学院河南新乡453007

手性螺环是很多生物活性天然产物、手性配体和催化剂的重要骨架.由于其独特的立体结构,手性螺环常被应用于药物研发中[1],开发一步构建螺环手性中心的高效方法具有非常重要的意义.

关键词：手性中心手性配体对映选择性烷基化反应活性天然产物多米诺药物研发螺环