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Solvent Effects on Complexation of Molybdenum（Ⅵ） with Nitrilotriacetic Acid in Different Aqueous Solutions of propanol

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Chinese Journal of Chemistry 2007年第3期25卷 284-288页

作者： MOHAMMADI Behrouz MOHAMMADI Jalalb Chemistry Department Shahid Beheshti University Tehran Evin Iran Chemistry Department Tabriz University Tabriz Iran

By using spectrophotometric and potentiometric techniques the formation constants of the species formed in the systems H^＋＋ Mo（Ⅵ）＋nitrilotriacetic acid and H^＋＋ nitrilotriacetic acid have been determined in aqueous solutions of propanol at 25 ℃ and constant ionic strength 0.1 molodm^-3 sodium perchlorate. The composition of the complex was determined by the continuous variation method. It was shown that molybdenum（Ⅵ） forms a mononuclear 1 ： 1 complex with nitrilotriacetic acid of the type MoO3L^-3 at -lg[H^＋] =5.8. The formation constants in various media were analyzed in terms of Kamlet and Taft＇s parameters. Linear relationships were observed when lg Ks was plotted versusp. Finally, the results were discussed in terms of the effect of solvent on complexation.

关键词： solvent effect molybdenum(Ⅵ) nitrilotriacetic acid (NTA) propanol

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Experimental investigation on combustion and emission characteristics of reactivity controlled compression ignition engine powered with iso-propanol/biodiesel blends

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Propulsion and Power Research 2022年第2期11卷 224-239页

作者： Müjdat Fırat S¸ehmus Altun Mutlu Okcu Yasin Varola Department of Automotive Engineering Fırat UniversityElazıg23119Turkey Department of Mechanical Engineering Batman UniversityBatman72100Turkey Department of Electrical-Electronic Engineering Ardahan UniversityArdahan75002Turkey

Recently, reactivity controlled compression ignition (RCCI) has been proposed inorder to achieve a higher thermal efficiency with lower emissions than conventional combustion. In RCCI mode, as the fuel types and their combinations affects the reactivity stratificationinside cylinder, thus combustion control, in present study, iso-propanol was evaluated as lowreactivity fuel (LRF) when petroleum diesel, commercial biodiesel and their blends were highreactivity fuels. It is of great importance that iso-propanol and biodiesel be used together inRCCI mode, as they significantly affect the in-cylinder stratification due to their high octane/cetane number. Therefore, the reactivity controlled compression ignition (RCCI) combustioncharacteristics was investigated in a diesel research engine using iso-propanol, petroleumdiesel, biodiesel and their blends as fuels. Tests were conducted on varying loadings (from20% to 60% of max torque) and premixed ratios of LRF (Rp Z 0, 0.15, 0.30, 0.45, and0.60) at a constant engine speed of 2400 rpm. Results, which were compared with conventionaldiesel combustion (CDC), showed that, as the premixed ratio (Rp) of low-reactivity fuel (isopropanol) increased, ignition delay (ID) period prolonged while combustion duration (CD) and rate of pressure rise (RoPR) reduced assisted to reduce NO emissions and smoke opacity in theexhaust. NO and smoke opacity reduced simultaneously for biodiesel-propanol combinationsup to 40% under 20% load and 0.60 premixed ratio of LRF compared to CDC. propanol premixed ratio of 0.30 at 60% load was found to be optimum concerning lowest emissions. In conventional mode, HC emissions reduced by up to 52% when biodiesel and its blends with dieselfuel are used, whereas they increased significantly in RCCI mode. According to overall results,it is concluded that RCCI performed better than CDC at entire load.

关键词： Reactivity controlled compression ignition(RCCI) propanol Biodiesel Combustion Emissions

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SYNTHESIS OF COMPOUNDS RELATED TO CHLORAMPHENICOL Ⅱ.3-(o-DICHLOROACETAMIDOMETHYL-p-NITROPHENYL)-propanol

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Science in China,Ser.A 1958年第4期 433-438页

作者：高怡生翁尊尧 Institute of Materia Medica Academia Sinica Shanghai

The present communication,being a part of the research work of thislaboratory,is aimed at synthesizing a related compound of chloramphenicolin which the number of asymmetric carbon atoms is less than that present inchloramphenicol(Ⅰ)itself,and at testing their antibiotic action for searchingthe clue of the relationship between the chemical structures of the antibioticand biological *** determined the molecular structure ofchloramphenicol by means of X-ray analysis and found it interesting thatthe position of the nitrogen atom of dichloracetamido-group is somewhatclose to the position of the nitrogen atom in ***,in this investigation,the authors have made an attempt to shift the dichloroacet-amido-group from the original side chain to another so as to synthesize acompound as 3-(o-dichloroacetamidomethyl-p-nitrophenyl)-propanol(Ⅱ)which may be regarded as an open-ring compound of tetrahydroquinoline,and in which no asymmetric carbon atom is present.

关键词： propanol SYNTHESIS OF COMPOUNDS RELATED TO CHLORAMPHENICOL o-DICHLOROACETAMIDOMETHYL-p-NITROPHENYL

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A new way to synthesize benzoin isopropyl ether on Cu-Fe-hydrotalcite

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Journal of Natural Gas Chemistry 2010年第1期19卷 77-80页

作者： Xianmei Xie, Xia An, Kai Yan, Xu Wu, Jianling Song, Zhizhong Wang College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan 030024 Shanxi China

An efficient synthesis of benzoin isopropyl ether with benzaldehyde and propanol in the presence of heterogeneous recyclable Cu-Fe-hydrotalcite catalyst has been explored. Cu-Fe-hydrotalcite was firstly successfully synthesized over Jahn-Teller effect of Cu^2＋. The catalytic test result showed that Cu-Fe-hydrotalcite could be used as a good catalyst in the synthesis of benzoin isopropyl ether. The highest conversion of ben- zaldehyde was 59.7% and the selectivity of benzoin isopropyl ether was nearly 100%. By this new method, not only was the cyanide poisoning avoided, but also the synthesis of benzoin isopropyl ether could be completed in one step instead of traditional two steps with both condensation and etherification.

关键词： benzoin isopropyl ether benzaldehyde propanol Cu-Fe-hydrotalcite

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Effect of Lanthanum on Catalytic Performance of Ru/Al2O3 Catalyst for Hydrogenation of Esters to Corresponding Alcohols

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Chemical Research in Chinese Universities 2015年第4期31卷 615-620页

作者： ZHANG Lei ZHENG Xiaojuan LI Ruixiang Key Lab of Green Chemistry and Technology Ministry of Education Department of Chemistry Sichuan University Chengdu 610064 P R. China

Ru-La/γ-Al2O3 catalyst was prepared by impregnation method and characterized by temperature pro- grammed reduction（TPR）, transmission electron microscopy（TEM）, X-ray photoelectron spectra（XPS）, Brunauer- Emmett-Teller（BET）, X-ray diffraction（XRD）, and NH3-temperature programmed desorption（NH3-TPD）. NH3-TPD revealed that the strong acidic centers in γ-Al2O3 are not the major factor to cause the hydrolysis of esters to acids in the hydrogenation of esters. The results of TPR and TEM indicate that the appropriately added lanthanum results in the good dispersion of ruthenium and the easy reduction of ruthenium oxide on Ru-Laγ-Al2O3, which could promote the catalytic activity of Ru-La/γ-Al2O3 for the hydrogenation of methyl propionate to propanol. When the amount of lanthanum added in the catalyst was up to 9%（mass fraction）, 4%Ru-9%La/γ-Al2O3 catalyst gave a conversion of methyl propionate of 98.1% and a selectivity of 94.8% to propanol at a reaction temperature of 180℃ and a hydro- gen pressure of 5.0 MPa.

关键词： Ruthenium Lanthanum Alumina Methyl propionate Hydrogenation propanol

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