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| 1 | Effect of Calcium Oxide Additive on the Performance of Iron Oxide Sorbent for High-Temperature Coal Gas Desulfurization显示文摘The effect of calcium oxide additive in iron oxide sorbent for hot gas desulfurization was investigated by XRD and TPR techniques.XRD characterization showed that CaO was highly dispersed after the calcination of sorbents.Calcium sulfate formed in the desulfurization was decomposed and regenerated to CaO by reacting with CO before the next sulfidation process.Calcium participated in every sulfidation/regeneration cycle and contributed to the enhancement of sulfur capacity.The TPR results showed that the reduction temperature of the sorbent increased with the increase of the content of calcium.Calcium played a role of retarding reduction.Therefore,the addition of calcium oxide additive will benefit the utilization of iron oxide sorbent in strongly reducing atmospheres. | Huiling Fan Kechang Xie Ju Shangguan Fang Shen Chunhu Li | 2007 | Journal of Natural Gas Chemistry2007，16，4： | 7 |
| 2 | Selenium speciation in flue desulfurization residues显示文摘Flue gas from coal combustion contains significant amounts of volatile selenium(Se).The capture of Se in the flue gas desulfurization(FGD) scrubber unit has resulted in a generation of metal-laden residues.It is important to determine Se speciation to understand the environmental impact of its disposal.A simple method has been developed for selective inorganic Se(IV),Se(VI) and organic Se determination in the liquid-phase FGD residues by hydride generation atomic fluorescence spectrometry(AFS).It has been determined that Se(IV),Se(VI) and organic Se can be accurately determined with detection limits(DL) of 0.05,0.06 and 0.06 μg/L,respectively.The accuracy of the proposed method was evaluated by analyzing the certified reference material,NIST CRM 1632c,and also by analyzing spiked tap-water samples.Analysis indicates that the concentration of Se is high in FGD liquid residues and primarily exists in a reduced state as selenite(Se(IV)).The toxicity of Se(IV) is the strongest of all Se species.Flue gas desulfurization residues pose a serious environmental risk. | Liping Zhong Yan Cao Wenying Li Kechang Xie Wei-Ping Pan | 2011 | Journal of Environmental Sciences2011，23，1： | 4 |
| 3 | Approach and potential of replacing oil and natural gas with coal in China显示文摘China’s fossil energy is characterized by an abundance of coal and a relative lack of oil and natural gas.Developing a strategy in which coal can replace oil and natural gas is,therefore,a necessary and practical approach to easing the excessive external dependence on oil and natural gas.Based on the perspective of energy security,this paper proposes a technical framework for defining the substitution of oil and natural gas with coal in China.In this framework,three substitution classifications and 11 industrialized technical routes are reviewed.Then,three scenarios(namely,the cautious scenario,baseline scenario,and positive scenario)are developed to estimate the potential of this strategy for 2020 and 2030.The results indicate that oil and natural gas replaced by coal will reach 67 to 81 Mt and 8.7 to 14.3 Gm^3 in 2020 and reach 93 to 138 Mt and 32.3 to 47.3 Gm^3 in 2030,respectively.By implementing this strategy,China’s external dependence on oil,natural gas,and primary energy is expected to be curbed at approximately 70%,40%,and 20%by 2030,respectively.This paper also demonstrates how coal,as a substitute for oil and natural gas,can contribute to carbon and pollution reduction and economic cost savings.It suggests a new direction for the development of the global coal industry and provides a crucial reference for energy transformation in China and other countries with similar energy situations. | Junjie LI Yajun TIAN Xiaohui YAN Jingdong YANG Yonggang WANG Wenqiang XU Kechang XIE | 2020 | Frontiers in Energy2020，14，2： | 3 |
| 4 | High wall-plug efficiency 808-nm laser diodes with a power up to 30.1 W显示文摘A very highly efficient InGaAlAs/AlGaAs quantum-well structure was designed for 808 nm emission,and laser diode chips 390-μm-wide aperture and 2-mm-long cavity length were fabricated.Special pretreatment and passivation for the chip facets were performed to achieve improved reliability performance.The laser chips were p-side-down mounted on the AlN submount,and then tested at continuous wave(CW)operation with the heat-sink temperature setting to 25℃using a thermoelectric cooler(TEC).As high as 60.5%of the wall-plug efficiency(WPE)was achieved at the injection current of 11 A.The maximum output power of 30.1 W was obtained at 29.5 A when the TEC temperature was set to 12°C.Accelerated life-time test showed that the laser diodes had lifetimes of over 62111 h operating at rated power of 10 W. | Zhanqiang Ren Qingmin Li Bo Li Kechang Song | 2020 | Journal of Semiconductors2020，41，3： | 3 |
| 5 | Design, Synthesis and Herbicidal Activities of Tetrahydroisoindoline-1,3-dione Derivatives Containing Alkoxycarbonyl Substituted 2-Benzoxazolinone显示文摘几不同代替 alkoxycarbonyl 的 2-benzoxazolinone 一半被合并了到 tetrahydroisoindoline-1,3-dione 脚手架提供 25 混合物(1a-1u 和 2a-2d ) 。这些混合物的结构被 1 H 和 13 C NMR, HRMS 和 X 光检查单个水晶的衍射。一些这些混合物(1g, 1h, 1j, 1k ) 对以 375 g AI·ha −1 的率的青麻 theophrasti, Amaranthus retroflexus 和 Echinochloa crus-galli 的展出优秀 herbicidal 活动。在他们之中,混合物 1h 和 1j 分别地与 1.8 和 5.3 g AI·ha −1, 的编辑 50 价值对青麻 theophrasti 显示了最好的出现以后的 herbicidal 效果,它比商业 acifluorfen 的优异(44.3 g AI·ha −1) 。地试用证明复合 1h 展出了类似的 herbicidal 活动到高集中 atrazine,并且发现了比 atrazine 为玉米更安全。这研究的结果因此证明复合 1h 能潜在地为玉米领域被用作出现以后的除草剂。 | Hao Zhang Kechang Liu Ruiquan Liu Qibo Li Yongqiang Li Qingmin Wang Shangzhong Liu | 2015 | Chinese Journal of Chemistry2015，33，7： | 2 |
| 6 | Coal Chemical In-dustry and its Sustainable Development in China显示文摘 | Xie Kechang Li Wenying Zhao Wei | 2009 | Ener-gy2009，，： | 1 |
| 7 | Coal Chemical Industry and Its Sustainable Development in China显示文摘 | XIE Kechang LI Wenying ZHAO Wei | 2010 | Energy2010，35，11： | 1 |
| 8 | Oxidative dehydrogenation of ethylbenzene with carbon dioxide over metal-doped titanium oxides显示文摘 | REN JUN LI WENYING XIE KECHANG | 2004 | Catalysis Letters2004，93，： | 1 |
| 9 | Coal Chemical Industry and Its Sustainable Development in China显示文摘 | Xie Kechang Li Wenying Zhao Wei | 2010 | Energy2010，90，8： | 1 |
| 10 | Increased eutrophication offshore Hong Kong,China during the past 75 years:Evidence from high-resolution sedimentary records显示文摘 | HU Jianfang ZHANG Gan LI Kechang | 2008 | Marine Chemistry2008，110，： | 1 |
| 11 | Zeolite NU-87:a new host for FeSalen complex显示文摘 | Ma Jinghong Li Ruifeng Xie Kechang | 2001 | Chemical Journal on Internet2001，3，12： | 1 |
| 12 | Increased eutrophication offshore Hong Kong, China during the past 75 years : Evidence from high- resolution sedimentary records显示文摘 | Hu Jianfang Zhang Gan Li Kechang | 2008 | Marine Chemistry2008，110，： | 1 |
| 13 | Coal Chemical Industry and Its Sustainable Development in China显示文摘 | Xie Kechang Li Wenying Zhao Wei | 2010 | Energy2010，35，11： | 1 |
| 14 | Coal Chemical Industry and its Sustainable Development in Chinap显示文摘 | Xie Kechang Li Wenying Zhao Wei | 2009 | Energy2009，，： | 1 |
| 15 | Sorbent for high-temperature removal of hydrogen sulfide from coal-derived fuel gas显示文摘 | Fan Hulling Li Chunhu Xie Kechang | 2001 | Journal of Natural Gas Chemistry2001，10，3： | 1 |
| 16 | Structure and bioactivities of a galactose rich extracellular polysaccharide from submergedly cultured Ganoderma lucidum显示文摘 | LI Yanqun LU Fang ZHANG Kechang | 2007 | Carbohydrate Polymers2007，68，2： | 1 |
| 17 | High selective catalyst for oxidative carbonylation of methanol to dimethyl carbonate显示文摘 | LI ZHONG XIE KECHANG SLADE1 R C T | 2001 | Appl Catal A:General2001，205，： | 1 |
| 18 | Analysis of Paleoseismic Events of Dahuzhuang Trench at the Xiadian Fault显示文摘The Xiadian Fault is a very important concealed active fault in the Beijing Plain. It is the seismogenic fault of the Sanhe-Pinggu MS8. 0 earthquake in 1679. The ancient earthquake sequence in the long historical period is of great significance to understand accurately the activity characteristics of the fault and effectively reduce the earthquake disaster risk in Beijing. We have re-interpreted the Dahuzhuang trench,and identified three layers of buried paleosol,six collapsed wedges and one sand liquefaction event. Further,through the comparison with the landmark strata and paleo-earthquake events revealed by other trenches on the fault,an ancient earthquake sequence with a long historical period of the Xiadian Fault was established:since the 31 ka,the Xiadian Fault has 11 occurrences of earthquake events(including the 1679 earthquake),and the average recurrence interval is about 2. 8 ka. The paleo-seismic sequence also shows that there is an ancient earthquake cluster period from 25 ka to 15 ka,and there are 5 strong earthquakes in the cluster period.The average recurrence interval is about 2. 0 ka,which reflects the phase difference of the Xiadian Fault activity. | DENG Mei SHEN Jun LI Xi DAI Xunye LIU Zezhong LI Kechang JIAO Xuankai | 2019 | Earthquake Research in China2019，33，3： | 1 |
| 19 | Coal Chemical Industry and its Sustainable Development in China显示文摘 | Xie Kechang Li Wenying Zhao Wei | 2009 | Energy2009，，： | 1 |
| 20 | Research on Si–Al based catalysts prepared by complete liquid-phase method for DME synthesis in a slurry reactor显示文摘 | Zhihong Li Zhijun Zuo Wei Huang Kechang Xie | 2010 | Applied Surface Science2010，，6： | 1 |
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