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Chinese Physics B 2014年第10期23卷 541-545页

作者：温晓莉陈钊林鑫牛利伟段萌萌张云婕董祥雷陈长乐 State Key Laboratory of Solidification Processing Northwestern Polytechnical University Key Laboratory of Space Applied Physics and Chemistry of Ministry of Education School of ScienceNorthwestern Polytechnical University

***3 （BBFO）/La2/3Srl/3MnO3 （LSMO） heterostructures are fabricated on LaA103 （100） substrates by pulsed laser deposition. Giant remnant polarization value （~ 85 μC/cm2） and large saturated magnetization value （~ 12.4 emu/cm3） for BBFO/LSMO heterostructures are demonstrated at room temperature. Mixed ferroelectric domain structures and low leakage current are observed and in favor of enhanced ferroelectrie properties in the BBFO/LSMO het- erostructures. The magnetic field-dependent magnetization measurements reveal the enhancement in the magnetic moment and improved magnetic hysteresis loop originating from the BBFO/LSMO interface. The heterostructure is proved to be effective in enhancing the ferroelectric and ferromagnetic performances in multiferroic BFO films at room temperature.

关键词： ferroelectric properties ferromagnetic properties Bio.9Bao.lFeO3/La2/3Srt/3MnO3 heterostruc-tures interface coupling effect

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Study of a plugging microbial consortium using crude oil as sole carbon source

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petroleum Science 2008年第4期5卷 367-374页

作者： Wang Jing Yan Guiwen An Mingquan Liu Jieli Zhang Houming Chen Yun School of Chemical Science ＆ Engineering China University of Petroleum Beijing 102249 China

A microbial consortium named Y4 capable of producing biopolymers was isolated from petroleum-contaminated soil in the Dagang oilfield, china. It includes four bacterial strains： Y4-1 （Paenibacillus sp.）, Y4-2 （Actinomadura sp.）, Y4-3 （Uncultured bacterium clone） and Y4-4 （Brevibacillus sp.）. The optimal conditions for the growth of the consortium Y4 were as follows： temperature about 46 ℃, pH about 7.0 and salinity about 20.0 g/L. The major metabolites were analyzed with gas chromatographymass spectrometry （GC-MS）. A comparison was made between individual strains and the microbial consortium for biopolymer production in different treatment processes. The experimental results showed that the microbial consortium Y4 could produce more biopolymers than individual strains, and the reason might be attributed to the synergetic action of strains. The biopolymers were observed with optical and electron microscopes and analyzed by paper chromatography. It was found that the biopolymers produced by the microbial consortium Y4 were insoluble in water and were of reticular structure, and it was concluded that the biopolymers were cellulose. Through a series of simulation experiments with sand cores, it was found that the microbial consortium Y4 could reduce the permeability of reservoir beds, and improve the efficiency of water flooding by growing biomass and producing biopolymers. The oil recovery was enhanced by 3.5% on average. The results indicated that the consortium Y4 could be used in microbial enhanced oil recovery and play an important role in bioremediation of oil polluted environments.

关键词： Microbial enhanced oil recovery plugging microbial consortium biopolymers

The role of reservoir mediums in natural oil cracking:Preliminary experimental results in a confined system

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Chinese Science Bulletin 2010年第33期55卷 3787-3793页

作者： XIAO QiLin1,2,SUN YongGe1,3 & ZHANG YongDong1,2 1 State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,china 2 Graduate Schools,Chinese Academy of Sciences,beijing 100049,china 3 Institute of Environmental and Biogeochemistry(eBig),Zhejiang university,Hangzhou 310027,china State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Graduate Schools Chinese Academy of Sciences Beijing 100049 China Institute of Environmental and Biogeochemistry (eBig) Zhejiang University Hangzhou 310027 China

Large amounts of data regarding the influence of temperature and pressure on the thermal stability of crude oil have been pub-lished;however,the role of reservoir mediums has received little *** involving oil cracking in the presence of montmorillonite,illite,calcite,quartz and water were conducted in closed gold tubes to investigate the effects of these reservoir mediums on oil *** was done by screening variations in the chemical and stable carbon isotopic components of nC10+ and gasoline-range hydrocarbons(nC8-)present in various *** indicated that reservoir mediums have an active role in oil cracking under experimental *** concentrations of nC10+ in the cracked residues progressively decreased in systems containing oil+water+illite,oil+water+montmorillonite,oil+water,oil+water+quartz and oil+water+*** comparison with the system containing oil+water,our results indicated a retardation effect for oil cracking in systems in the presence of illite and montmorillonite,and an acceleration effect on oil destruction in systems in the presence of calcite and ***10+ became increasingly depleted in 13C in systems with oil+water+illite,oil+water+calcite,oil+water+montmorillonite,oil+water+ quartz and oil+*** obvious correlation was observed between concentrations and stable carbon isotopic components of nC6-nC8 and nC10+ in the individual *** discrepancies in chemical and stable carbon isotopic components of nC6-nC8 and nC10+ in the pyrolyzed residues highlighted the important role of reservoir mediums to control carbon-carbon cleavage of nC10+ and then the isomerization,cyclolization and aromatization reactions;as well as governing the occurrence and thermal destruction of nC6-nC8 under experimental *** research may have critical implications in reconstructing chemical kinetic models for natural oil cracking.

关键词：裂解作用实验条件密闭系统原油裂解水库介质天然同位素组成

Study of displacement mechanisms in heavy oil recovery through a non-thermal process-chemical flooding

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Study of displacement mechanisms in heavy oil recovery throu...

Preparation and enhanced Photo-catalytic Performance of nc-TiO2/SnO2 Photonic Crystal Composite Membranes

第五届中美化学工程学术会议

作者： Haiyan Zhang~(1,2),Mingzhe Dong~2,Suoqi Zhao~1 1 State Key Laboratory of Heavy oil Processing,china university of petroleum,beijing,china 2 Department of Chemical and petroleum Engineering,university of Calgary,Calgary,Canada

Various thermal methods are used for recovering very viscous oils from *** processes are energy intensive with high CO *** reduction of green house gas emission during heavy oil production is achieved through using a non-thermal enhanced heavy oil recovery *** use of cold water to introduce an alkali solution into the heavy oil reservoirs can emulsify the viscous heavy oil in place thereby allowing it to flow and be recovered out of the oil formations.

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Preparation and Enhanced Photo-catalytic Performance of nc-T...

中国颗粒学会超微颗粒专委会2011年年会暨第七届海峡两岸超微颗粒学术研讨会

作者： Sheng-Li Chen~*,Ai-Jun Wang,Chun-Tian Hu,Chao Dai State Key Laboratory of Heavy oil Processing,College of Chemical Engineering,china university of petroleum,Changping,beijing,102249,china

An nc-TiO/SnO inverse opal composite membrane was fabricated,the photoactivity of which was significantly enhanced by utilizing both slow photons and stopband reflection of the photonic crystal *** materials of the photonic crystal layer must be transparent in the area of adsorption edge of the nc-TiO,so that SnO, having much greater electronic band gap than TiO,was used for the materials of the photonic crystal *** photonic band-gap of the SnO photonic crystal was designed at the semiconductor band gap of TiO to harvest slow photons in the interface between the SnO layer and the TiO *** two layer structure makes it possible to couple the stop-band reflectivity of the photonic layer to the photo-catalyst. Composite membranes can improve solar energy harvesting and substantially improve photo-catalysts for photolysis and photochemical degradation of environmental pollutants.

关键词： Nano-crystalline TiO2 Slow photons Photonic crystals SnO2 Inverse opal Stop-band reflection Photo-catalyst

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交联比对交联聚合物微球性能的影响

石油与天然气化工 2011年第4期40卷 362-366,325页

作者：李宏岭韩秀贞李明远中国石化国际石油勘探开发有限公司中国石化石油勘探开发研究院中国石油大学提高采收率研究中心

采用动态光散射实验、扫描电镜实验、核孔膜过滤实验和岩心实验研究了交联比对交联聚合物微球性能的影响。实验结果表明,交联比不同,微球溶胀后的水化粒径不同;交联比越小,微球结构越松散,微球的溶胀倍数越大;随着交联比的减小,微球的... 详细信息

采用动态光散射实验、扫描电镜实验、核孔膜过滤实验和岩心实验研究了交联比对交联聚合物微球性能的影响。实验结果表明,交联比不同,微球溶胀后的水化粒径不同;交联比越小,微球结构越松散,微球的溶胀倍数越大;随着交联比的减小,微球的柔软程度增加,变形性增强;核孔膜实验表明,粒径适中、变形性较好的微球封堵能力强;岩心驱油实验进一步表明变形性较好的微球更容易进入油藏深部进行封堵。现场试验表明,该体系微球能够有效增油降水,能够改善地层的非均质性。

关键词：交联聚合物微球粒径溶胀交联比变形性

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井下裂解提高稠油油藏蒸汽吞吐采收率

新疆石油地质 2011年第5期32卷 508-511页

作者：张弦刘永建西南石油大学博士后流动站成都610500 东北石油大学提高油气采收率教育部重点实验室黑龙江大庆163318

开展了井下裂解就地改质稠油,提高稠油油藏蒸汽吞吐采收率的室内模拟实验和矿场应用试验。研究表明,油藏矿物可催化稠油水热裂解反应,其中黏土矿物的催化效果优于其他矿物,可使稠油黏度降低30%以上,黏土矿物含量越高,越有利于水热裂解反... 详细信息

开展了井下裂解就地改质稠油,提高稠油油藏蒸汽吞吐采收率的室内模拟实验和矿场应用试验。研究表明,油藏矿物可催化稠油水热裂解反应,其中黏土矿物的催化效果优于其他矿物,可使稠油黏度降低30%以上,黏土矿物含量越高,越有利于水热裂解反应;注入催化剂硫酸镍和供氢剂四氢萘溶液段塞后,蒸汽吞吐最终采收率大幅度提高,比单纯蒸汽吞吐提高8.8%,产出油降黏率增加51.7%,饱和烃、芳香烃含量分别增加38.0mg/g和26.3 mg/g,胶质、沥青质含量分别降低41.9mg/g和41.1mg/g.矿场试验结果表明,井下裂解就地改质稠油技术可延长蒸汽吞吐周期生产时间、提高日产油量、提高油汽比和回采水率,较大程度地改善蒸汽吞吐开发效果。

关键词：辽河油田稠油蒸汽吞吐井下裂解提高采收率

Phase behavior of TXs/toluene/water microemulsion systems for solubilization absorption of toluene

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Journal of Environmental Sciences 2010年第2期22卷 271-276页

作者： Lian Liu,Senlin Tian ,Ping Ning Faculty of Environmental Science and Engineering,Kunming university of Science and Technology,Kunming 650093,china [a] Faculty of Environmental Science Engineering Kunming University of Science Technology Kunming 650093 China

Triton Xs （TXs） surfactants/cosurfactant/water/oil （toluene） microemulsion systems for enhancing toluene solubilization were proposed and its potential was investigated for toluene removal from gas stream. The results indicated that TX-100 was superior to other TXs surfactants in removing toluene without cosurfactant. The efficiency of cosurfactants for improving toluene solubilization capacity follows the order： amine 〉 alcohol 〉 acid. According to the factor analysis, the linear cosurfactants are better than the branched ones. The effects of hydrophile-lipophile balance （HLB）, salt （NaCl） concentration and temperature on the formation of microemulsion system were also discussed. The results suggested that the optimum value of HLB was 15, the effect of NaCl concentration on the system was inconspicuous and the lower temperature enhanced the solubilization capacity. Nonionic surfactant-based microemulsions had a significant absorption enhancement for toluene, indicated by as much as 82.72% of toluene in phase composition diagram, which will have a great prospect in air pollution treatment.

关键词： microemulsion phase behavior absorption toluene

Microwave thermal remediation of crude oil contaminated soil enhanced by carbon fiber

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Journal of Environmental Sciences 2009年第9期21卷 1290-1295页

作者： LI Dawei,ZHANG Yaobin,QUAN Xie,ZHAO Yazhi Key Laboratory of Industrial Ecology and Environmental Engineering,Ministry of Education of china,School of Environmental and Biological Science and Technology,Dalian university of Technology,Dalian 116024,china [a]Key Laboratory of Industrial Ecology and Environmental Engineering Ministry of Education of China School of Environmental and Biological Science and Technology Dalian University of Technology Dalian 116024 China

Thermal remediation of the soil contaminated with crude oil using microwave heating enhanced by carbon fiber （CF） was explored. The contaminated soil was treated with 2.45 GHz microwave, and CF was added to improve the conversion of microwave energy into thermal energy to heat the soil. During microwave heating, the oil contaminant was removed from the soil matrix and recovered by a condensation system of ice-salt bath. The experimental results indicated that CF could efficiently enhance the microwave heating of soil even with relatively low-dose. With 0.1 wt.% CF, the soil could be heated to approximately 700℃ within 4 min using 800 W of microwave irradiation. Correspondingly, the contaminated soil could be highly cleaned up in a short time. Investigation of oil recovery showed that, during the remediation process, oil contaminant in the soil could be efficiently recovered without causing significant secondary pollution.

关键词： microwave heating crude oil remediation carbon fiber

Experimental Analysis and Evaluation for Bacteria in microbial enhanced oil recovery

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Experimental Analysis and Evaluation for Bacteria in microbi...