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| 1 | 机械化学法制备的Al/Ce复合氧化物负载NiMo催化剂的加氢脱硫活性(英文)显示文摘将Al和/或Ce的硝酸盐与NH_4HCO_3球磨混合,采用机械化学法制备了Al_2O_3-CeO_2载体(其中Ce含量为1-10 wt%),再以杂多钼酸盐(NH_4)_4NiMo_6O_(24)为活性金属Ni和Mo的前驱体,通过浸渍法制备NiMo_6/Al_2O_3-CeO_2催化剂,并将其用于1-苯并噻吩(BT)的加氢脱硫(HDS)反应中.运用化学分析、X射线衍射、N_2吸附-脱附法、H_2程序升温还原、NH_3程序升温脱附和X射线光电子能谱对催化剂的物化性质进行了表征.结果表明,催化剂的酸性随着载体中Ce含量的增加而下降.Ce修饰的Al_2O_3载体表面的NiS/MoS原子比下降了2倍.NiMo_6/Al_2O_3催化剂表现出最高的HDS活性(以单位重量催化剂计),其酸性和表面MoO_xS_y物种的浓度(Mo^(5+)浓度)也最高;当催化剂中Ce含量逐渐增加到10 wt%以上时,其活性逐渐将为0.与浸渍法制得的参比催化剂相比,前驱体和催化剂组成相同的情况下,采用机械化学法制得的所有催化剂活性明显提高. | Květa Jirátová Alla Spojakina Luděk Kaluza Radostina Palcheva Jana Balabánová Georgi Tyuliev | 2016 | Chinese Journal of Catalysis2016，37，2： | 6 |
| 2 | 镍钼杂多酸制备NiMo/γ-Al_2O_3催化剂及硼、钴或镍改性氧化铝的影响(英文)显示文摘A hydrotreating NiMo/γ-Al2O3 catalyst(12 wt% Mo and 1.1 wt% Ni) was prepared by impregnation of the support with the Anderson-type heteropolyoxomolybdate(NH4)4Ni(OH)6Mo6O18.Before impregnation of the support,it was modified with an aqueous solution of H3BO3,Co(NO3)2,or Ni(NO3)2.The catalysts were investigated using N2 adsorption,O2 chemisorption,X-ray diffraction,UV-Vis spectroscopy,Fourier transform infrared spectroscopy,temperature-programmed reduction,temperature-programmed desorption,and X-ray photoelectron spectroscopy.The addition of Co,Ni,or B influenced the Al2O3 phase composition and gave increased catalytic activity for 1-benzothiophene hydrodesulfurization(HDS).X-ray photoelectron spectroscopy confirmed that the prior loading of Ni,Co or B increased the degree of sulfidation of the NiMo/γ-Al2O3 catalysts.The highest HDS activity was observed with the NiMo/γ-Al2O3 catalyst with prior loaded Ni. | Radostina PALCHEVA Luděk KALUZA Alla SPOJAKINA Květue JIRTOV Georgi TYULIEV | 2012 | 催化学报2012，33，6： | 6 |
| 3 | Synthesis and characterization of yttrium-aluminum-iron and yttrium-cerium-iron citric complexes显示文摘Fe-, Y-Fe-Al- and Y-Ce-Fe- citrates were synthesized in ethylene glycol (EG) medium under conditions similar to those used in the polymerized complex method. Their elemental composition, IR, 13C and 1H NMR, X-ray photoelectron and Mssbauer spectra were studied, and formulae describing their composition were proposed. The complexes contained EG bonded as adduct and ester with citric acid ligand and did not contain ligands with deprotonated alcoholic groups. The complexes consisted of agglomerated spheres, 0.7-3 μm in diameter. The local composition of the products was established by energy dispersive X-ray microanalysis. The comparison of the number of the ligands, their average electrical charge and the esterification degree of mono-, di- and trimetallic complexes proved the mixed-metal nature of the species studied. The thermal decomposition of the complexes was studied and a general scheme of the processes taking place was proposed. Highly crystalline, phase homogeneous Y3Fe4AlO12 was produced after heating the respective complex at 1000 °C. Ce-doped yttrium-iron garnet, similarly prepared, contained traces of CeO2. | N. Petrova D. Todorovsky1 I. Mitov G. Tyuliev | 2008 | Journal of Rare Earths2008，26，3： | 2 |
| 4 | Low rank coals sulphur functionality study by AP-TPR/TPO coupled with MS and potentiometric detection and by XPS显示文摘 | MARINOV S P TYULIEV G STEFANOVA M CARLEER R YPERMAN J | 2004 | Fuel Process Technol2004，85，4： | 1 |
| 5 | Low rank coals sulphur functionality study by AP-TPR/TPO coupled with MS and potentiometric detection and by XPS显示文摘 | MARINOV S P TYULIEV G STEFANOVA M CARLEER R YPERMAN J | 2004 | Fuel Process Technol2004，85，4： | 1 |
| 6 | XPS study of N, annealing effect on thermal Ta2O5 layers on Si显示文摘 | ATANASSOVA E TYULIEV G PASKALEVA A | 2004 | Applied Surface Science2004，225，： | 1 |
| 7 | Direct mechanochemical syn- thesis of nanocrystalline NiWO4 显示文摘 | Mancheva M N Iordanova R S Klissurski D G Tyuliev G T Kunev B N | 2007 | The Journal of Physical Chemistry C2007，111，3： | 1 |
| 8 | Low rankcoals sulphur functionality study by AP-TPR/TPO coupledwith MS and potentiometric detection and by XPS显示文摘 | Marinov S P Tyuliev G Stefanovaa M | 2004 | FuelProcessing Technology2004，85，4： | 1 |
| 9 | Influence of the size of gold nanoparticles deposited on TiO 2 upon the photocatalytic destruction of oxalic acid显示文摘 | V. Iliev D. Tomova L. Bilyarska G. Tyuliev | 2006 | A, Chemical2006，，1： | 1 |
| 10 | Thiophene hydrodesulfurization activity of alumina supported heteropoly compounds: nickel effect显示文摘 | Radostina Palcheva Alla Spojakina* Georgi Tyuliev Kveta Jiratova Lachezar Petrov | 2006 | Reaction Kinetics and Catalysis Letters2006，，2： | 1 |
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