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催化剂对煤着火特性的影响——Ⅱ.不同催化剂对煤催化着火的影响

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燃料化学学报 1993年第2期21卷 180-184页

作者：陈海峰沙兴中徐依青杭月珍高晋生尹桂芳倪献智王泉清白浚仁华东化工学院上海200237 山东矿业学院济南250031

通过测定煤的着火点研究了不同催化剂对大同烟煤和晋城无烟煤的催化着火的影响。结果表明,催化剂化学组成是决定催化作用大小的一个重要的因素,具有同一碱金属离子,不同阴离子的催化剂酸性越强,催化作用越弱,其催化活性顺序为OH^->CO_3^... 详细信息

通过测定煤的着火点研究了不同催化剂对大同烟煤和晋城无烟煤的催化着火的影响。结果表明,催化剂化学组成是决定催化作用大小的一个重要的因素,具有同一碱金属离子,不同阴离子的催化剂酸性越强,催化作用越弱,其催化活性顺序为OH^->CO_3^(2-)>Cl^->SO_4^(2-);具有同一阴离子,不同碱金属或碱土金属阳离子的催化作用可用“电子转移学说”来解释,其催化作用的大小,随相应的碱金属,碱土金属的第一电离能的减少而增加。

关键词：煤温度催化剂催化燃烧

Ti_xY_(1-x)Ba_2Cu_3O_(7-δ)超导体的红外、远红外光谱

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物理学报 1989年第4期38卷 586-592页

作者：叶红娟俞志毅陆卫季华美陈建湘李光远蔡培新顾为芳中国科学院上海技术物理研究所华东化工学院物理系中国科学院上海冶金研究所

本文报道了Ti_xY_(l-x)Ba_zCu_3O_(7-8)(x=0.2和0.4)在4.2—300K的红外、远红外光谱。在50—360cm^(-1)波段内发现七个反射峰。它们分别与Ba,Cu,O离子团,Y,O离子团。Ti,O离子团,以及Cu--O键的振动有关,对于x=0.2的样品,存在两个反转结... 详细信息

本文报道了Ti_xY_(l-x)Ba_zCu_3O_(7-8)(x=0.2和0.4)在4.2—300K的红外、远红外光谱。在50—360cm^(-1)波段内发现七个反射峰。它们分别与Ba,Cu,O离子团,Y,O离子团。Ti,O离子团,以及Cu--O键的振动有关,对于x=0.2的样品,存在两个反转结构。对于x=0.4的样品,则仅发现一个反转结构。在红外光谱中观察到六个反对峰和三个吸收峰,它们的强度大多随Ti含量的增加而增强。与Y_1Ba_2Cu_3O_(7-8)的光谱结果比校,讨论了声子峰及反转结构的物理起因。

关键词：超导体红外光谱远红外光谱

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有机溶剂与乳杆菌相容性的研究

生物工程学报 1993年第4期9卷 324-331页

作者：范先国周可可李友荣苏元复华东化工学院

以乳酸发酵－溶剂萃取耦合过程为背景，研究了十二种有机溶剂在发酵培养基中的不同浓度水平，对德氏乳杆菌生理活性的影响。根据乳杆菌生理活性随溶剂浓度变化的特征，将有机溶剂与乳杆菌的相容性分为四种类型，对比溶剂在水中溶解度与... 详细信息

以乳酸发酵－溶剂萃取耦合过程为背景，研究了十二种有机溶剂在发酵培养基中的不同浓度水平，对德氏乳杆菌生理活性的影响。根据乳杆菌生理活性随溶剂浓度变化的特征，将有机溶剂与乳杆菌的相容性分为四种类型，对比溶剂在水中溶解度与溶剂对乳杆菌特征毒性浓度的相对大小，对四种类型作了定性描述。

关键词：发酵乳杆菌有机溶剂生物相容性

Removal of Trace Olefins from Aromatics by Catalytic Alkylation Using 1-Alkyl-3-methylimidazolium Bromochloroaluminate Catalyst

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china Petroleum Processing & Petrochemical technology 2011年第2期13卷 14-18页

作者： Sun Yu Shi Li(State Key Laboratory of chemical Engineering,east china university of Science and technology,Shanghai 200237) E china Univ Sci & Technol State Key Lab Chem Engn Shanghai 200237 Peoples R China

Removal of trace olefins from aromatic liquids had been investigated in the presence of various ionic liquids like 1-ethyl-3-methylimidazoliurn bromochloroaluminate （EMIMBr-AlCl3）, 1-butyl-3-methylimidazolium bromochloroaluminate （BMIMBr-AlCl3）, l-hexyl-3-methylimidazolium bromochloroaluminate （HMIMBr-AlCl3）, and 1-octyl-3-methylimidazolium bromochloroaluminate （OMIMBr-A1C13）. It was found that the longer the alkyl chain of ionic liquid cations was, the higher the olefins conversion would be. OMIMBr-AlCl3 （with 0.67 molar fraction of AlCl3） had an obvious performance on olefins removal. The influences of various reaction parameters such as the dosage of catalyst, the reaction temperature, and the reaction time on the reaction catalyzed by OMIMBr-AlCl3 were investigated. Under optimum reaction conditions, a higher than 99% conversion of olefins was achieved. The preliminary results revealed that the process could save time, consume less energy, separate products easier, and cause less pollution to the environment.

关键词： ionic liquids olefins removal 1-alkyl-3-methylimidazolium bromochloroaluminate aromatic

Electrochemical behaviour of commercially pure titanium and Co-Cr alloy in Ringer's solution

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Rare Metals 2002年第4期21卷 266-270页

作者： LIANG Chenghao and MOU ThanqiSchool of chemical Engineering, Dalian university of technology, Dalian 116012, china School of chemical Engineering Dalian University of Technology Dalian 116012

The electrochemical behaviors of commercially pure titanium (CP Ti) and Co-Cralloy in Ringer's solution have been investigated. The results indicate that the electric potentialof passive region for CP Ti is up to 3000 mV, and its passive current density is 3.078 μA/cm^*** excellent corrosion resistance of CP Ti can be attributed to the formation of TiO_2 oxide *** passive region of Co-Cr alloy is 770 mV, which is narrower than that of CP Ti. However, nohysteresis loops are found in the reverse scanning curves of Cu-Cr alloy. A complex oxide film ofCo_3O_4, Co_2O_3, and Cr_2O_3 formed on the surface provides Co-Cr alloy with a stableelectrochemistry property. The corrosion rates of the crevice samples increase with the pH value ofmedium decreasing. The electron probe microanalyzer (EPMA) analysis indicates that Ti in CP Ti andCo, Cr in Co-Cr alloy dissolve in crevice area due to the Sealed-Cell effect.

关键词： ringer's solution biomedical material electrochemical behaviors

Ni-loaded Catalyst Containing Activated Clay for Maleic Anhydride Hydrogenation to Succinic Anhydride

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china Petroleum Processing & Petrochemical technology 2011年第4期13卷 35-40页

作者： Tian Weiping Guo Shaofei Shi Li (The State Key Laboratory of chemical Engineering, east china university of Science and technology, Shanghai 200237) E china Univ Sci & Technol State Key Lab Chem Engn Shanghai 200237 Peoples R China

In this work, the hydrogenation of maleic anhydride to succinic anhydride in the presence of 5 m%Ni/clay catalysts was investigated. These catalysts were characterized by X-ray diffraction （XRD）, H2 temperature programmed reduction （TPR） and thermogravimetric analysis （TGA） techniques. The XRD and TPR studies showed that Ni was present as Ni2＋ on the support, which indicated that there were no elemental nickel （Ni^0） and Ni203 species in the unreduced samples. Increasing of calcination temperature to 650 ℃ leads to destruction of the support structure observed in TGA, while the catalyst sample calcined at 550 ℃ exhibits better performances than other samples. The ideal conversion of maleic anhydride （97.14%） and selectivity of succinic anhydride （99.55%） were realized at a reaction temperature of 180 ℃ and a weight hourly space velocity of 4 h^-1 under a reaction pressure of 1 MPa.

关键词： maleic anhydride hydrogenation succinic anhydride nickel

Study on Removal of Naphthenic Acids from White Oil by[BMIM]Br-AlCl_3

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china Petroleum Processing & Petrochemical technology 2010年第4期12卷 46-51页

作者： Li Jing Sun Yu Shi Li (The State Key Laboratory of chemical Engineering,east china university of Science and technology, Shanghai 200237) E china Univ Sci & Technol State Key Lab Chem Engn Shanghai 200237 Peoples R China

The removal of acid compounds （naphthenates） from acidic oil with ionic liquids was systematically investigated. [BMIM]Br-AlCl3 was used to investigate the effect on deacidification of oil. Experimental results showed that at a temperature of 323K with a molar ratio of AlCl3 to [BM1M]Br-AlCl3 of 0.2, and a mass ratio of IL to white oil of 4%, the deacidification rate could reach 75.9%. And a reaction time of 4 h was sufficient to achieve the goal. The study on reproducibility of catalytic performance of [BMIM]Br-AlCl3 showed the possibility of using the ionic liquid in the continuous catalytic reaction.

关键词： naphthenic acid ionic liquid white oil deacidification

Baker's yeast mediated reduction of substituted acenaphthenequinones: Regio-and enantioselective preparation of mono-hydroxyacenaphthenones

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Chinese chemical Letters 2007年第6期18卷 681-684页

作者： Xing Yong Wang, Jing Nan Cui, Wei Min Ren, Feng Li, Chun Liang Lu, Xu Hong Qian State Key Laboratory of Fine chemicals, Dalian university of technology, Dalian 116012, china School of chemical Engineering and technology, china university of Mining & technology, Xuzhou 221008, china Shanghai Key Laboratory of chemical Biology, east china university of Science and technology, Shanghai 200237, china [a]State Key Laboratory of Fine chemicals Dalian University of Technology Dalian 116012 China [b]School of chemical Engineering and technology China University of Mining & Technology Xuzhou 221008 China [c]Shanghai Key Laboratory of chemical Biology East China University of Science and Technology Shanghai 200237 China

Baker's yeast mediated reduction of acenaphthenequinone within 4-10 h afforded mono-hydroxyacenaphthenone mainly with low enantioselectivity, the substrate and mono-hydroxyacenaphthenone product almost converted to dihydroxyacenaphthene after 48 h. By control of the reaction time and in the presence of DMF as co-solvent, the reduction of 6-substituted acenaphthenequinones under vigorous agitation afforded the corresponding 2-hydroxyacenaphthenones in 24-84% yields with 10-93% ee.

关键词： Baker's yeast Reduction Regio- and enantioselectivity Chiral hydroxyacenaphthenone

Deep Desulfurization via Adsorption by Silver Modified Bentonite

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china Petroleum Processing & Petrochemical technology 2011年第3期13卷 16-20页

作者： Tang Xiaolin Le Zheting Shi Li (State Key Laboratory of chemical Engineering,east china university of Science and technology,Shanghai 200237) E china Univ Sci & Technol State Key Lab Chem Engn Shanghai 200237 Peoples R China

In order to further reduce the sulfur content in liquid hydrocarbon fuels,a desulfurization process by adsorption for removing alkyl dibenzothiophenes was *** of model gasoline by bentonite adsorbents loaded with silver nitrate was *** test results indicated that the bentonite adsorbents loaded with Ag + ions were effective for adsorbing the alkyl *** crystal structure of bentonite adsorbents was characterized by X-ray diffraction (XRD) and their acidity was measured by Fourier transform infrared (FT-IR) *** factors influencing the desulfurization capability,including the Ag + loading,the baking temperature,as well as the reaction temperature,were *** desulfurization efficiency was enhanced by increasing the Ag + loading and the best result was obtained at a silver loading of 7 m%.It was found that the adsorption capacity of the alkyl dibenzothiophenes on bentonite loaded with Ag + ions increased with a decreasing *** of the adsorbent could also improve the desulfurization capacity,and the optimum baking temperature was 423 K.

关键词： desulfurization bentonite adsorbent silver ion