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Preparation of ultrafine Ce-based oxide nanoparticles and their catalytic performances for diesel soot combustion

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Journal of Rare Earths 2014年第2期32卷 124-130页

作者：韦岳长赵震焦金庆刘坚段爱军姜桂元 State Key Laboratory of Heavy Oil Processing China University of Petroleum

The ultrafine Ce-based oxide nanoparticles with different element dopings （Zr, Y） were synthesized by the method of mi- cropores-diffused coprecipitation （MDC） using ammonia solution as the precipitation agent. The activities of the catalysts for soot oxidation were evaluated by the temperature-programmed oxidation （TPO） reaction. Ce-based oxides prepared in this study exhibited high catalytic activity for soot oxidation under tile condition of loose contact between soot particles and catalysts, and the catalytic ac- tivity ofultrafine ***0 iO2 nanoparticle for soot combustion was the highest, whose/＂10, Ts0 and Sco2m was 364, 442 ~C and 98.3%, respectively. All catalysts were systematically characterized by means of X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, Brumauer-Emett-Teller （BET）, Fourier transform infrared spectroscopy （FT-IR） and UV-Vis diffuse reflectance spectroscopy （UV-Vis DRS）. It was indicated that the MDC method could prepare the ultrafine Ce-bascd oxide nanoparticles whose the crystal lattice were perfect, and the BET surface area and average crystal size of the ultrafine nanoparticles changed with the different element dopings （Zr, Y）. The H2-TPR measurements showed that the ultrafine Ce-based ox- ide nanoparticles with the doping-Zr cation could be favorable for improving the redox property of the catalysts.

关键词： ultrafine nanoparticles Ce-based oxides catalysts soot combustion micropores-diffused coprecipitation rare earths

Synthesis of a new ordered mesoporous NiMoO_4 complex oxide and its efficient catalytic performance for oxidative dehydrogenation of propane

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Journal of Energy Chemistry 2014年第2期23卷 171-178页

作者： Xiaoqiang Fan Jianmei Li Zhen Zhao Yuechang Wei Jian Liu aijun duan Guiyuan Jiang State Key Laboratory of Heavy Oil Processing China University of Petroleum

Highly ordered mesoporous NiMoO4 material was successfully synthesized using mesoporous silica KIT-6 as hard template via vacuum nanocasting method. The structure was characterized by means of XRD, TEM, N2 adsorption-desorption, Raman and FT-IR. The mesoporous NiMoO4 with the coexistence of a-NiMoO4 and fl-NiMoO4 showed well-ordered mesoporous structure, a bimodal pore size distribution and crystalline framework. The catalytic performance of NiMoOa was investigated for oxidative dehydrogenation of propane. It is demonstrated that the mesoporous NiMoO4 catalyst with more surface active oxygen species showed better catalytic performance in oxidative dehydrogena- tion of propane in comparison with bulk NiMoO4.

关键词： ----w,7ordered mesoporous structure NiMoO4 complex oxide vacuum nanocasting propane oxidative dehydrogenation

有序介孔材料Al-FDU-12的合成及其加氢精制应用

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化工进展 2021年第3期40卷 1449-1455页

作者：曹正凯张霞段爱军中国石油大学(北京)重质油国家重点实验室北京102249 中国石化大连石油化工研究院辽宁大连116045

采用原位合成法合成了不同硅铝原子比(Si/Al=50、40、30、20、10)的Al-FDU-12介孔材料,进一步浸渍镍钼活性金属制备了催化剂。通过小角X射线衍射(XRD)、广角XRD、N_(2)吸附-脱附、扫描电镜(SEM)、透射电镜(TEM)和紫外等表征手段对材料... 详细信息

采用原位合成法合成了不同硅铝原子比(Si/Al=50、40、30、20、10)的Al-FDU-12介孔材料,进一步浸渍镍钼活性金属制备了催化剂。通过小角X射线衍射(XRD)、广角XRD、N_(2)吸附-脱附、扫描电镜(SEM)、透射电镜(TEM)和紫外等表征手段对材料及催化剂做了相应的表征,并且考察了不同硅铝比的NiMo/Al-FDU-12催化剂在催化裂化柴油中的加氢脱硫脱氮性能。结果表明,FDU-12介孔材料孔径、孔容以及比表面积大,活性金属分散度高。铝改性后的NiMo/Al-FDU-12催化剂加氢脱硫、脱氮活性得到显著提高。当反应条件为温度350℃、氢油体积比600、压力5.0MPa、质量空速(WHSV)1.0h^(−1)、硅铝比20时,催化剂的加氢脱硫脱氮活性最高,脱硫率可达98.9%,脱氮率可达95.3%。在相同反应条件下,工业催化剂催化柴油加氢脱硫、脱氮率低于NiMo/AF-20以及NiMo/AF-10催化剂。因此,铝改性后的FDU-12材料具有良好的工业应用前景。

关键词：催化剂合成活性石油失活

Three-dimensionally ordered macroporous CeO_2/Al_2O_3-supported Au nanoparticle catalysts: Effects of CeO_2 nanolayers on catalytic activity in soot oxidation

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Chinese Journal of Catalysis 2017年第9期38卷 1629-1641页

作者： Baofang Jin Yuechang Wei Zhen Zhao Jian Liu Yazhao Li Renjie Li aijun duan Guiyuan Jiang State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 China Institute of Catalysis for Energy and Environment Shenyang Normal University Shenyang 110034 Liaoning China

A series of catalysts consisting of three‐dimensionally ordered macroporous(3DOM)x‐CeO2/Al2O3‐supported Au nanoparticles(x=2,10,20,and40wt%)were successfully synthesized using a reduction‐deposition *** catalysts were characterized using scanning electron microscopy,the Brunauer‐Emmett‐Teller method,X‐ray diffraction,transmission electron microscopy,ultraviolet‐visible spectroscopy,and temperature‐programmed reduction by *** nanoparticles of mean particle size5nm were well dispersed and supported on the inner walls of uniform ***3DOM structure improved the contact efficiency between soot and the *** Al‐Ce‐O solid solution was formed in the multilayer support,i.e.,x‐CeO2/Al2O3,by the incorporation of Al3+ions into the CeO2lattice,which resulted in the creation of extrinsic oxygen *** interactions between the metal(Au)and the support(Ce)increased the amount of active oxygen species,and this promoted soot *** catalytic performance in soot combustion was evaluated using a temperature‐programmed oxidation *** presence of CeO2nanolayers in the3DOM Au/x‐CeO2/Al2O3catalysts clearly improved the catalytic activities in soot *** the prepared catalysts,3DOM Au/20%CeO2/Al2O3showed high catalytic activity and stability in diesel soot oxidation.

关键词： Three‐dimensionally ordered macroporous material Gold nanoparticle Multilayer support CeO2 nanolayer Soot combustion

Selective oxidation of ethane to aldehydes over SBA-15 supported molybdenum catalyst

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Journal of Energy Chemistry 2014年第5期23卷 609-616页

作者： Jianmei Li Jian Liu Liwei Ren Qinglong Liu Zhen Zhao Yongsheng Chen Pengyu Zhu Yuechang Wei aijun duan Guiyuan Jiang State Key Laboratory of Heavy Oil College of Science China University of Petroleum EMS Energy Institute and John and Willie Leone Family Department of Energy and Mineral Engineering The Pennsylvania State University University Park PA 16802 USA

SBA-15 supported Mo catalysts （Moy/SBA-15） were prepared by an ultrasonic assisted incipient-wetness impregnation method. The physical and chemical properties of the catalysts were characterized by means of N2-adsorption-desorption, XRD, TEM, UV-Vis, Raman, XANES and H2-TPR. The results showed that a trace amount of MoO3 was produced on high Mo content samples. Tum-over frequency （TOF） and product selectivity are dependent on the molybdenum content. Both Mo0.75/SBA-15 and Mo1.75/SBA-15 catalysts give the higher catalytic activity and the selectivity to the total aldehydes for the selective oxidation of C2H6. At the reaction temperature of 625℃, the maximum yield of aldehydes reached 4.2% over Mo0.75/SBA-15 catalyst. The improvement of the activity and selectivity was related with the state of MoOx species.

关键词： selective oxidation of ethane supported oxides catalysts Mo aldehydes SBA-15

Synthesis of La_xK_(1–x)CoO_3 nanorod and their catalytic performances for CO oxidation

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Journal of Rare Earths 2014年第2期32卷 170-175页

作者：刘坚王季秋赵震徐春明韦岳长段爱军姜桂元 State Key Laboratory of Heavy Oil College of ScienceChina University of Petroleum

A series of LaxKl xCoO3 nanorod oxides with perovskite structure were synthesized by sol-gel method using polyvinyl al- cohol （PVA） as additive. These perovskite-type complex oxide catalysts were characterized by the techniques of X-ray diffraction （XRD）, infrared （IR）, Brumauer-Emmett-Teller （BET） and scanning electron microscopy （SEM）. And the results showed that nano- rods of La1-xKxCoO3 perovskite-type complex oxides were fabricated by sol-gel method when the mass concentration of PVA was 4% and the calcined temperature kept at 700 ℃ for 4 h. The catalytic results of CO oxidation showed that the LaxK1-xoO3 catalysts had high activity. LaCoO3 nanorods exposed more {110} plane than LaCoO3 nanoparticles, which was beneficial to the catalytic oxi- dation of CO. LaCoO3 nanorods had the best catalytic performance for the oxidation of CO. At 200 ℃, the CO conversion could reach 100%.

关键词： perovskite nanorod catalyst catalytic oxidation CO rare earths

Synthesis of Hierarchical Porous Material Beta-SBA-16 and Its Hydrodesulfurization Performance of DBT

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Synthesis of Hierarchical Porous Material Beta-SBA-16 and It...

湘中古台山金锑矿床变形序列、成矿事件及控矿构造

中国化学会第十九届全国催化学术会议

作者： Qian Meng Peng Zheng Cong Liu Di Hu aijun duan State Key Laboratory of Heavy Oil Processing China University of Petroleum

With the increase of motor vehicle exhaust emissions, countries around the world constantly introduce strict fuel oil standards to limit the sulfur content. However, alumina as the traditional support cannot meet the ... 详细信息

关键词： Hierarchical porous Beta-SBA-16 Hydrodesulfurization

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矿床地质 2023年第2期42卷 229-252页

作者：柏道远李彬江灿段爱军湖南省地质调查所湖南长沙410016 东华理工大学核资源与环境国家重点实验室江西南昌330013 湖南省玉坤矿业集团有限公司湖南新化417600

湘中古台山金锑矿位于雪峰构造带西南段东北部,发育SN向金矿脉和NW向金锑矿脉2类矿脉。前人提出SN向和NW向断裂为容矿构造,并获得了印支期成矿的40Ar-39Ar同位素年龄,但对容矿断裂的性质、形成时代以及2类矿脉的时代关系缺乏研究和认识... 详细信息

湘中古台山金锑矿位于雪峰构造带西南段东北部,发育SN向金矿脉和NW向金锑矿脉2类矿脉。前人提出SN向和NW向断裂为容矿构造,并获得了印支期成矿的40Ar-39Ar同位素年龄,但对容矿断裂的性质、形成时代以及2类矿脉的时代关系缺乏研究和认识。鉴于此,文章通过地表和井下露头构造以及矿化蚀变的观测、解析,结合区域构造特征、区域构造演化和测年资料等,厘定了古台山金锑矿区构造变形序列及其时代、不同类型矿脉的成矿时代和构造背景,探讨了构造控矿规律及动力机制。主要认识如下:(1)研究区自早至晚经历了5期主要变形事件:志留纪晚期受到NWW向挤压,形成NNE向板劈理、NNE向褶皱(水车背斜)、SN向顺层断裂、逆冲剪切破裂和断裂;中三叠世晚期受到NNW向挤压,局部形成NEE向轴面劈理;晚三叠世受到SN向挤压,形成EW向褶皱、NW向—NNW向右行走滑断裂和剪切破裂、NNE向左行走滑断裂和剪切破裂、EW向逆冲剪切破裂等;中侏罗世晚期受到NWW向挤压,形成EW向右行剪切破裂和断裂;古近纪中晚期受到NE向—NNE向挤压,形成SN向—NNE向右行剪切破裂和断裂、EW向—NEE向左行剪切破裂和断裂、NE向左行剪切破裂等;(2)SN向金矿脉形成于印支晚期(晚三叠世),NW向金锑矿脉形成于燕山期(晚侏罗世);2类不同矿脉在空间上共生可能与不同成矿阶段的埋深差异有关;(3)NNE向水车复背斜和白马山-龙山EW向隆起相关的NNE向、EW向隐伏大断裂和花岗岩体,以及郴州-邵阳NW向基底隐伏大断裂,为矿床定位提供了良好的构造条件;(4)导矿构造为晚三叠世NNE向左行走滑断裂;金矿脉的容矿构造为志留纪晚期的SN向逆断裂,金锑矿脉的容矿构造为晚三叠世NW向右行走滑断裂;NNE向断裂的左行走滑,导致SN向和NW向含矿断裂局部偏转为NNW向和NWW向。

关键词：地质学变形序列成矿时代控矿构造动力机制古台山金锑矿床湖南

Effect of Operation Variables on Hydrodenitrogenation and Hydrodesulfurization over NiMo/Al_2O_3 Catalysts

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Chinese Journal of Chemical Engineering 2003年第6期11卷 743-746页

作者：段爱军徐春明林世雄 State Key Laboratory of Heavy Oil Processing Department of Chemical EngineeringUniversity of PetroleumBeijing 102249China State Key Laboratory of Heavy Oil Processing Department of Chemical EngineeringUniversity of PetroleumBeijing 102249China Using the JQ-Ⅱhigh pressure hydrogenation micro-reactor unit the reactivity of Athabasca bitumenderived heavy gas oil was studied over commercial and homemade hydrotreating catalysts. The effects of catalystpreparation variables and the influences of operation conditions such as pressure temperature hydrogen/oil ratioand space velocity were also examined. It was shown that the optimal concentrations of the active components were5% of NiO 20% of MoO_3 and 3.5% of phosphorus (by mass) and the suitable operation conditions were determinedexperimentally.

Using the JQ-II high pressure hydrogenation micro-reactor unit, the reactivity of Athabasca bitumen derived heavy gas oil was studied over commercial and homemade hydrotreating catalysts. The effects of catalyst preparation variables and the influences of operation conditions, such as pressure, temperature, hydrogen/oil ratio and space velocity were also examined. It was shown that the optimal concentrations of the active components were 5% of NiO, 20% of MoO3 and 3.5% of phosphorus (by mass), and the suitable operation conditions were determined experimentally.

关键词： hydrotreatment heavy gas oil hydrodesulfurization hydrodenitrogenation