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Green Chemical Engineering 2021年第2期2卷 233-238页

作者： Pengcheng Hu Ruimin Chai Aonan Lai Shu-Feng Zhou College of Chemical Engineering Huaqiao UniversityXiamen361021FujianChina

The spectral structures of acetamide-AlCl_(3)-based ionic liquid(IL)analogs were determined in detail through IR,NMR,and Raman *** spectroscopy showed that 0.65AA-1.0AlCl_(3) was the coordination structure of Al and O atoms because of the resonance structure of *** mutual verification of the results of ^(27)Al NMR and ^(1)H NMR indicated that acetamide coexisted mainly in the form of cationic Al species and molecular Al species in xAA-1.0AlCl_(3),and AA/AlCl_(3) molar ratio affected the transformation of cationic Al species to molecular Al ***-1.0AlCl_(3) was used as a green acidic catalyst for isobutene oligomerization,and the effects of AA/AlCl_(3) molar ratio,reaction temperature,reaction time,and volumetric ratio between IL analog and isobutene on product distribution were *** reaction conditions were AA/AlCl_(3) molar ratio of 0.75,reaction temperature of 60 C,reaction time of 30 min,and catalyst/i-C4¼volumetric ratio of 1.4 v/*** optimal conditions,isobutene conversion,(C8^(-)+C12^(-))selectivity,(C16^(-)+C20^(-))selectivity,and by-product selectivity were 85.26,80.20,6.80,and 13.00 wt%,respectively。

关键词： Oligomerization Isobutene Ionic liquid analog catalytic performance

Direct Synthesis,Characterization and catalytic performance of Iron-Containing SBA-15 for Phenol Degradation

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Journal of Beijing Institute of Technology 2008年第2期17卷 232-236页

作者：谢焕玲徐文国 School of Science Beijing Institute of Technology

An iron-containing SBA-15（Fe-SBA-15） has been synthesized via one-pot hydrothermal method under weak acidic conditions. A series of characterizations show nanocomposite materials of iron particles supported over mesostructured materials. The catalytic activity of these iron-containing SBA-15 materials has been tested for the heterogeneous Fenton degradation of phenolic aqueous solutions. The catalytic performance has beta monitored in terms of phenol conversion, whereas the catalytic stability was evaluated by catalyst recycle. The influence of concentration of hydrogen peroxide, catalyst loading, catalyst prepared with different Fe/Si molar ratios in the gel and pH values of the solution on phenol conversion has been studied. Achieving a good catalytic performance accompanied with a noteworthy stability, Fe-SBA-15 materials prepared by this method are shown as the successful catalyst for degradation of phenolic aqueous solutions by Fenton process.

关键词： Fe-SBA-15 Fenton reagent phenol catalytic performance catalytic stability

Ru effect on the catalytic performance of Pd@Ru/C catalysts for methanol electro-oxidation

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Journal of Energy Chemistry 2015年第2期24卷 232-238页

作者： Yanbiao Ren Shichao Zhang Xin Wei School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics

Pd@Ru bimetallic nanoparticles deposited on carbon black electro-catalysts have been fabricated by microwave-assisted polyol reduction method and investigated for methanol electro-oxidation （MEO）. The structure and electro-catalytic properties of the as-prepared catalysts were characterized by XRD, SEM, TEM and cyclic voltammetry （CV） techniques. The results showed that the introduction of Ru element （2-10 wt%） into Pd 20 wt%/C （hereafter, denoted as Pd/C） produced a series of core-shell structured binary catalysts. Pd@Ru 5 wt%/C （hereafter, denoted as Pd@Rus/C） catalyst displayed the highest catalytic activity towards MEO. And the mass activity of Pd@Ru5/C electrode catalyst at E = -0.038 V （vs. Hg/HgO） was 1.42 times higher than that of Pd/C electrode catalyst. In addition, the relationship between the catalytic stability for MEO on Pd@Ru/C catalysts and the value of dbp/dfp （the ratio of MEO peak current density in the negative scan and positive scan） were also investigated. The result demonstrated that Pd@Rus/C offering the smallest value of Jbp/Jfp displayed the best stable catalytic performance.

关键词： methanol electro-oxidation catalytic performance poisoning tolerance core-shell structured catalyst

Preparation of Zn-modified nano-ZSM-5 zeolite and its catalytic performance in aromatization of 1-hexene

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Transactions of Nonferrous Metals Society of China 2015年第5期25卷 1580-1586页

作者：王高亮吴伟昝望白雪峰王文静戚鑫 O.V.KIKHTYANIN 黑龙江大学化学化工与材料学院高效转化的化工过程与技术黑龙江省普通高校重点实验室哈尔滨150080 Boreskov Institute of Catalysis Siberian Branch of the Russian Academy of Sciences哈尔滨150080

The promoting effect of introducing Zn into nano-ZSM-5 zeolites by conventional impregnation method and isomorphous substitution on the performance of 1-hexene aromatization was investigated. The nano-ZSM-5 zeolite was synthesized by a seed-induced method without organic templates. The Zn-modified nano-ZSM-5 zeolite catalysts, xZ n/HNZ5 and y Zn/Al-HNZ5, were prepared by the conventional impregnation method and isomorphous substitution, respectively. The structure, chemical composition and acidity of the catalysts were characterized by XRD, XRF, N2 adsorption, SEM, NH3-TPD and Py-IR, while the catalytic properties were evaluated at 480 °C and a weight hourly space velocity（WHSV） of 2.0 h-1 in the aromatization procedure of 1-hexene. Compared with xZ n/HNZ5, y Zn/Al-HNZ5 exhibited smaller particles and higher dispersion of Zn species, which led to greater intergranular mesopore and homogeneous acidity distribution. Experimental results indicated that the synergy effect between the Brnsted and Lewis acid sites of the isomorphously substituted nano-ZSM-5 zeolites could significantly increase aromatics yield and improve catalytic stability in the 1-hexene aromatization.

关键词： nano-ZSM-5 zeolite Zn-modification catalytic performance isomorphous substitution aromatization

Microstructure, Optical Properties and catalytic performance of Cu2O-modified ZnO Nanorods Prepared by Electrodeposition

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Microstructure, Optical Properties and Catalytic Performance...

安徽省第三届（2014年）“万瑞杯”真空科技青年创新大赛暨学术研讨会

作者： Xishun Jiang Miao Zhang Shiwei Shi Gang He Xueping Song Zhaoqi Sun School of Physics and Materials Science Anhui University

Cu2O-modified ZnO nanorods are prepared by two-step electrodeposition method on ITO substrates and the deposition time of Cu2O is 0, 1, 5 and 10 min, respectively. Field-emission scanning electron microscope(SEM) results indicate that Cu2O particles are embedded in the interspaces of the Zn O nanorods and the amounts of the Cu2O particles increase obviously when the deposition time lasts longer. X-ray diffractometer(XRD) shows that the peaks corresponding to Zn O nanorods and Cu2O particles are detected. UV-vis absorption spectra measurements have shown the band gaps of Zn O nanorods shift from 3.22 to 2.75 e V due to the introduction of Cu2O particles. X-ray photoelectron spectroscopy(XPS) measurement confirms that the sample contains Cu+ rather than Cu2+ or Cu. The MO concentration can be reduced to around 15% in 100 min with Cu2O electrodeposition time for 10 min.

关键词： Cu2O-modified ZnO nanorods Microstructure Optical properties catalytic performance

Controlled assembly and catalytic performance of carboxyethyltin/transition metal functionalized wheel-shaped tungstophosphates

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Controlled assembly and catalytic performance of carboxyethy...

中国化学会2019年中西部地区无机化学化工学术研讨会

作者： Xiao-Shu Yu Xing-Fang Wang Zai-Ming Zhu Fang Su Xiao-Jing Sang Lan-Cui Zhang School of Chemistry and Chemical Engineering Liaoning Normal University

Polyoxometalates (POMs) as multi-dentate ligands can coordinate with organometallic (OM) and transition metal (TM) ions to form new functional *** this work,usinga-[HPWO]as a building block,two novel carboxyethyltin/TM functionalized wheel-shaped tungstophosphates,formulated as NaKH[Sn(CHCHCOO)PWO]·91HO (1),Na[Mn(HO)PWO]·74HO (2),have been successfully assembled by conventional aqueous solution method,and structurally characterized with physicochemical and spectroscopic ***-crystal X-ray diffraction analysis reveals that eight OM or TM ions are all grafted on the inner of the polyoxoanion[PWO](abbreviated as{PW}) wheels,and the estertin precursors have hydrolyzed into carboxyethyltin groups (Fig.1a).1,2 and{PW}were used to catalyze the oxidation of cyclohexanol to cyclohexanone.1 exhibits high catalytic activity and is considered to be an environmentally friendly catalyst (Fig.1b).

关键词： wheel-shaped structure tungstophosphates Estertin derivative catalytic performance

Effect of Calcination Temperature on the catalytic performance for Low-temperature CO Oxidation over Co3O4 Catalysts

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Effect of Calcination Temperature on the Catalytic Performan...

第十三届全国催化学术会议

作者： Yongzhao Wang, Chunguang Gao, Xiaodong Hou, Yongxiang Zhao , Diansheng Liu (School of Chemistry and Chemical Engineering, Institute of Advanced Chemistry, Shanxi University, Taiyuan 030006)

＜正＞1. Introduction The low-temperature catalytic oxidation of CO has become an important research topic over the years due to its many potential areas of applications. Cobalt oxide catalysts have attracted considerable attention because of its high catalytic activity for CO oxidation. The preparation and characterization of CO3O4 have

关键词： Calcination temperature catalytic performance Low-temperature CO oxidation

Effects of Mg-based Hydrogen Storage Material on the Thermal Decomposition catalytic performance of HMX

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Effects of Mg-based Hydrogen Storage Material on the Thermal...

中国化学会第十九届全国化学热力学和热分析学术会议

作者： PEI Qing XU Si-yu ZHAO Feng-qi Science and Technology on Combustion and Explosion Laboratory Xi’an Modern Chemistry Research Institute

Scanning electron microscope（SEM） and X-ray fluorescence（XRF） were employed to characterize the mixtures of Mg-based hydrogen storage materials and high explosive were prepared by mixed grinding method and DSC experiments were used to characterize their catalytic ***,the thermal decomposition kinetics and thermodynamics parameters of samples were calculated and *** show that the peak temperatures and the activation energy of HMX decrease at different heating rates of 5,10,15,20 K/min after the addition of Mg-based hydrogen storage *** obvious changes also have been found in the thermodynamics parameters Mg-based hydrogen storage materials have distinct catalytic performance for the thermal decomposition of HMX.

关键词： thermal decomposition Mg-based hydrogen storage material HMX catalytic performance

Pore Structure and catalytic performance of Steam-Dealuminated ZSM-5/Y Composite Zeolites

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Petroleum Science 2005年第1期2卷 62-65页

作者： GuoJintao ShenBaojian ChenHonglin KeyLaboratoryofCatalysisofCNPC StateKeyLaboratoryofHeavyOilProcessingandFacultyofChemicalEngineeringUniversityofPetroleumBeijing102249China

For investigating the effect of dealumination on the pore structure and catalytic performance, ZSM-5/Y composite zeolites synthesized in situ from NaY gel were dealuminated by steaming at different temperatures. XRD (X-ray diffraction) characterization indicates that the relative crystallinity of the composite zeolites decreases with the increase in Si/Al ratio after steaming. N2 adsorption-desorption suggests that more mesopores are formed while the BET (Brunauer, Emmett and Teller) specific surface area and the micropore specific surface area decrease as the temperature of steaming rises. Daqing heavy oil was used as feedstock to test the catalytic cracking activity of ZSM-5/Y composite zeolites. The experimental results of the catalytic cracking performance reveal that the distribution of products differs due to the different conditions of hydrothermal treatment. Further hydrothermal treatment leads to an increase in the yield of light oil, and a decrease in the yield of gas products and coke.

关键词： ZSM-5/Y composite zeolites steam treatment pore structure catalytic performance

A novel inorganic-organic hybrid polyoxometalate/γ-cyclodextrin complex: structural characterization and its catalytic performance

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A novel inorganic-organic hybrid polyoxometalate/γ-cyclodex...

2018年中国质谱学术大会（CMSC2018）

作者： Jie Cao YanXuan Fan ShiFang Lu Key Laboratory of Cluster Science Ministry of Education of ChinaBeijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of ChemistryBeijing Institute of Technology

A novel non-covalent hybrid complex formed between silicotungstic acid(HSiWO, SiW, an abbreviation also for [SiWO]) and γ-cyclodextrin(γ-CD) was synthesized and characterized by electrospray ionization tandem mass spectrometry(ESI-MS/MS) and proton nuclear magnetic resonance spectroscopy(HNMR). The experimental results showed that stable noncovalent complexes existing in equilibrium, [SiW +(γ-CD)](m = 1, 2, and 3), can be formed in solution where the predominant species is the 1:1 complex. The significant chemical shift changes for the inner-cavity H-5 protons and the H-6/6′ protons on the primary faces of the CD torus in H NMR titration revealed that SiW probably interacts with the primary faces of γ-CD through intermolecular hydrogenbonding interactions. The gas-phase fragmentation of [SiW +(γ-CD)]showed that a proton can be transferred from γ-CD to SiW12 within the complex upon dissociation, leading to a pair of anionic products, [HSiW +(γ-CD)]and [γ-CD – H], providing further evidence for the nature of the intermolecular interactions. The solid 1:1 adduct catalyst SiW/γ-CD obtained by vapor diffusion method was then used in the epoxidation of cyclooctene to cyclooctene oxide with HO as oxidant as a comparison with SiW alone. The result showed that the catalytic performance of SiW/γ-CD is superior to SiW(SiW/γ-CD is about 10 times better than SiW), serving as the best example to demonstrate the synergistic catalysis arising from the supramolecular catalyst.

关键词： Polyoxometalate/cyclodextrin non-covalent complex structural characterization tandem mass spectrometry catalytic performance