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Adsorption and Desorption of Thiophene Vapor on NaY/NiY Zeolites

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China Petroleum Processing & Petrochemical Technology 2010年第2期12卷 45-50页

作者： Liu Daosheng~(1,2. Song Lijuan~2.Ju Xiufang~2.Duan Linhai~2.Sun Zhaolin~(1,2. (1.college of chemistry & {2. engineering,China university of Petroleum(East China),Dongying 2.7061 2.Liaoning Key Laboratory of Petro{2. engineering,Liaoning Shihua university) China Univ Petr E China Coll Chem & Chem Engn Dongying 257061 Peoples R China Liaoning Shihua Univ Liaoning Key Lab Petrochem Engn Liaoning Peoples R China

FT-IR spectrometry, TPD and adsorption isotherms of thiophene on NaY/NiY zeolites were carried out and the diffusion coefficient was obtained by means of its real-time dynamic curves. The loading of thiophene adsorbed on the NaY zeolite decreased with an increasing temperature, which was ascribed to the patterns of physical adsorption. Both physical and chemical adsorption phenomena were detected on the NiY zeolite, with the 0 complexation and S-M interaction existing during the chemical adsorption. The loading of thiophene adsorbed on the NiY zeolite at 302.K and 335 K was equal, but it decreased at 373 K. The diffusion coefficient of thiophene on the NaY zeolite decreased when the loading increased to more than 0.02.mmol/g, and on the contrary that of thiophene on the NiY zeolite did not change obviously with the loading adsorbed.

关键词： adsorption diffusion coefficient temperature-programmed desorption (TPD)

Effect of strontium substitution on the activity of La_(2.x)Sr_xNiO_4(x=0.0-1.2.in NO decomposition

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Science China chemistry 2007年第1期50卷 41-46页

作者： ZHU JunJiang 1 ,YANG XiangGuang 2.,XU XueLian 3 &WEI KeMei 1 1 National Research Center of chemical Fertilizer Catalysts,Fuzhou university,Fuzhou 350002.China 2.Changchun Institute of Applied {2.,Chinese Academy of Sciences,Changchun 13002.,China 3college of {2.&chemical engineering,Fuzhou university,Fuzhou 350002.China 1. National Research Center of chemical Fertilizer Catalysts Fuzhou University Fuzhou 350002 China 2. Changchun Institute of Applied chemistry Chinese Academy of Sciences Changchun 130022 China 3. college of chemistry & {2. engineering Fuzhou University Fuzhou 350002 China

The aim of this work is to study the effect of Sr substitution on the redox properties and catalytic ac- tivity of La2.xSrxNiO4(x=0.0-1.2.for NO *** suggest that the x=0.6 sample shows the highest *** characterization(TPD,TPR,etc.)of samples indicates that the x=0.6 sample possesses suitable abilities in both oxidation and reduction,which facilitates the proceeding of oxygen desorption and NO *** temperature below 700℃,the oxygen desorption is difficult, and is the rate-determining step of NO *** the increase of reaction temperature(T> 700℃),the oxygen desorption is favorable and,the active adsorption of NO on the active site(NO+Vo+ Ni2.→NO^--Ni3+)turns out to be the rate-determining *** existence of oxygen vacancy is the prerequisite condition for NO decomposition,but its quantity does not relate much to the activity.

关键词： NO decomposition La2.xSrxNiO4 TPD TPR oxygen vacancy

Preparation and photocatalytic activity of TiO_2.coated granular activated carbon composites by a molecular adsorption-deposition method

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Science China chemistry 2008年第11期51卷 1036-1043页

作者： LI YouJi, LI Jing, MA MingYuan, OUYANG YuZhu & YAN WenBin college of chemistry and {2. engineering, Jishou university, Jishou 416000, China 1. college of chemistry and {2. engineering Jishou University Jishou 416000 China

TiO2.nanoparticle-coated granular activated carbon (GAC) composite photocatalysts (CPs) were suc-cessfully prepared by a molecular adsorption-deposition (MAD) method. The CPs were detected by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), BET surface area and UV-Vis adsorption spectroscopy, and their photoactivity was evaluated by methyl orange (MO) photodegradation. The results show that small-sized TiO2.nanoparticles were dispersed well, deposited on the surface of GAC, and showed slight blue shift in comparison with pure TiO2. With the increase in TiO2.content, the CPs showed band gaps in lower energy, smaller surface areas and the higher content of Ti3+ ions. Compared with pure TiO2.and others CPs samples, CPs-382.sample showed the highest photoactivity due to the optimum TiO2.content and surface area besides the synergic effect of photocatalytic degradation of TiO2.and adsorptive property of GAC. In addition, the CPs could be very easily reclaimed, recycled and reused for methyl orange removal while high photoactivity is pre-served.

关键词： photocatalysis titanium dioxide granular activation carbon composites molecular adsorption–deposition method

Study on the properties of polyaniline for med in KOH solution

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西南师范大学学报(自然科学版) 1999年第5期24卷 562-565页

作者： Li Nianbing 1,Zhang Shengtao 2.Ding Peidao 3 1 college of chemistry and {2. engineering,Southwest China Normal university,Chongqing 400715 2.college of chemistry and {2. engineering,Chongqing university,Chongqing 400044 3 college of Materi 西南师范大学重庆重庆大学重庆

Electropolymerization of aniline in KOH solution and properties of the polymer were studied by in situ reflex ellipsometry, cyclic voltammetry and fluorescence spectroscopic method. The process of electropolymerization of aniline was different in alkaline and in acidic aqueous media. The complex refractive indices and the fluorescence spectra indicated that the polyaniline was a sort of luminous material.

关键词： polyaniline electropolymerization alkaline solution ellipsometry fluorescence luminous material

Reactivity Ratios for Microemulsion Copolymeriration of N-butyl Maleimide and Styrene

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Chinese chemical Letters 2000年第5期11卷 451-452页

作者： You Liang ZHAO Hua Ming LI Peng Sheng LIU (college of chemistry and {2. engineering, Xiangtan university. Xiangtan 411105) Coll. of Chem. and Chem. engineering Xiangtan University Xiangtan 411105 China

The oil-in-water microemulsion containing N-butyl maleimide(NBMI. M_1) and styrene(St, M_2. was prepared. The complexation properties of NBMI and St in microemulsion were investigated by means of 1H-NMR. With the participation of charge-transfer complex(CTC). four reactivity ratios and the relative reactivity of free monomers and CTC were obtained. The result was compared with that measured by Mayo-Lewis method.

关键词： N-Butyl maleimide styrene charge-transfer complex O/W microemulsion copolymeriation reactivity fation.

Study of technology on MnSO4 preparation from highferrous manganese spar

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西南师范大学学报(自然科学版) 1999年第5期 566-570页

作者： Hu Debin 1,Li Nianbing 2. Zhang Shengtao 1, Han Lianyi 1 1 college of chemistry and {2. engineering,Chongqing university,400044 2.college of chemistry and {2. engineering,Southwest China Normal university,400715

Preparation of MnSO 4 from high ferrous manganese spar is studied by *** in traditional ways,such as undesirable increasing of solution viscosity and difficulty in neutralization, are solved *** recovery ratio can be ... 详细信息

关键词： high ferrous manganese spar manganese recovery ratio filtration time

Hydrogen Evolution Reaction on Thermodiffusion Treated Nickel-Implanted Titanium Electrodes

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chemical Research in Chinese Universities 1990年第3期6卷 229-230页

作者： Zhang Jishuang, Wang Ronghui, Lu Yaojiao, Yang Jinquan and Feng Hanming (Department of chemistry and chemical {2., hunan university, changsha)

Implating ions with high-energy into the surface of electrode can introduce catalytically active elements, and thus form a large number of active centers to improve the catalytical activity. As a result of implanting nickel ions into Ti-electrode we get a overpotential decrease of hydrogen evolution by 2.5 mV and the electrode was much more active than the unimplanted one. The experiment shows that the catalytical activity of the electrodes raises with the increase of the surface nickel ions concentration. The maximum concentration of ions were not on the electrode surface, as the deep distribution of the

关键词： Ion implant Thermodiffusion Electrocatalysis

Controllable incorporation of CdS nanoparticles into TiO_2.nanotubes for highly enhancing the photocatalytic response to visible light

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Science China chemistry 2009年第12期52卷 2148-2155页

作者： WANG ChengLin1,SUN Lan1,XIE KunPeng1 & LIN ChangJian1,2.1 Department of chemistry,college of chemistry and chemical engineering,Xiamen university,Xiamen 361005,China 2.State Key Laboratory of Physical chemistry of Solid Surfaces,Xiamen university,Xiamen 361005,China 1. Department of chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China 2. State Key Laboratory of Physical chemistry of Solid Surfaces Xiamen University Xiamen 361005 China

A constant current electrochemical deposition was employed to incorporate CdS nanoparticles into the TiO2.nanotube arrays (TiO2.Ts). The size and amount of CdS nanoparticles in TiO2.Ts (CdS@TiO2.Ts) were controllable via modulating current,deposition time and electrolyte concentration. It was revealed,from the scanning electron microscopy (SEM) images and X-ray photoelectron spectroscopy (XPS) in depth profile,that CdS nanoparticles were filled into TiO2.nanotubes. A shift of the absorption edge toward the visible region under the optimal electrodeposition condition was observed with the diffuse reflectance spectroscopy (DRS). A 5-fold enhancement in the photocurrent spectrum for TiO2.Ts was observed and the photocurrent response range was significantly extended into the visible region because of the CdS incorporation. Compared with pure TiO2.Ts,under a visible light irradiation,CdS@TiO2.Ts exhibited a 3.5-fold improvement of photocatalytic activity,which was demonstrated by the photocatalytic decomposition of Rhodamine B (RhB).

关键词： TiO2 nanotube CdS photocatalysis RhB

Fluorescence Enhancing Effect of OP on Ga(Ⅲ)-ECBBR system and its Analytical Application

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Rare Metals 2001年第2期20卷 130-132页

作者： Jinzhang Gao, Jianniao Tian, Yanchun Zhao, the Yang, Jingguo Hou, Jingwan Kang (chemistry and chemical {2. college, Northwest Normal university, Lanzhou 730070, China) 西北师范大学甘肃兰州 730070

The fluorophotometric determination of gallium(Ⅲ) With eriochrome blue black R (ECBBR) was investigated in the presence of OP at pH 2.0n.5. The calibration graph has a good linear relationship in the rabid of 1.6×10-7-1.2. 10-5 mol/L Ga(Ⅲ). The effect of foreign ions was studied and the proposed method was applied to the determination of gallium in aluminum alloy.

关键词： gallium, eriochrome blue black R OP aluminum alloy