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| 1 | Effect of CeO_2 addition on Ni/Al_2O_3 catalysts for methanation of carbon dioxide with hydrogen显示文摘The Ni-CeO2/Al2O3 catalysts with a nickel content of 15 wt% prepared via impregnating boehmite were found to be highly active and stable for methanation of carbon dioxide with hydrogen at a H2/CO2 molar ratio of 4.The effects of CeO2 content and reaction temperature on the performance of the Ni-CeO2/Al2O3 catalysts were studied in detail.The results showed that the catalytic performance was strongly dependent on the CeO2 content in Ni-CeO2/Al2O3 catalysts and that the catalysts with 2 wt%CeO2 had the highest catalytic activity among the tested ones at 350℃.The XRD and H2-TPR characterizations revealed that the addition of CeO2 decreased the reduction temperature by altering the interaction between Ni and Al2O3,and improved the reducibility of the catalyst.Preliminary stability test of 120 h on stream over the Ni-2CeO2/Al2O3 catalyst at 350℃ revealed that the catalyst was much better than the unpromoted one. | Hezhi Liu Xiujing Zou Xueguang Wang Xionggang Lu Weizhong Ding | 2012 | Journal of Natural Gas Chemistry2012，21，6： | 13 |
| 2 | Molten salt synthesis of porous carbon and its application in supercapacitors: A review显示文摘Carbon materials have taken an important role in supercapacitor applications due to their outstanding features of large surface area,low price,and stable physicochemical properties.Considerable research efforts have been devoted to the development of novel synthesis strategy for the preparation of porous carbon materials in recent years.In particular,molten salt strategy represents an emerging and promising method,whereby it has shown great potential in achieving tailored production of porous carbon.It has been proved that the molten salt-assisted production of carbon via the direct carbonization of carbonaceous precursors is an effective approach.Furthermore,with the incorporation of electrochemical technology,molten salt synthesis of porous carbon has become flexible and diversiform.Here,this review focuses on the mainstream molten salt synthesis strategies for the production of porous carbon materials,which includes direct molten salt carbonization process,capture and electrochemical conversion of CO_(2)to value-added carbon,electrochemical exfoliation of graphite to graphene-based materials,and electrochemical etching of carbides to new-type carbide-derived carbon materials.The reaction mechanisms and recent advances for these strategies are reviewed and discussed systematically.The morphological and structural properties and capacitive performances of the obtained carbon materials are summarized to reveal their appealing points for supercapacitor applications.Moreover,the opportunities and challenges of the molten salt synthesis strategy for the preparation of carbon materials are also discussed in this review to provide inspiration to the future researches. | Zhongya Pang Guangshi Li Xiaolu Xiong Li Ji Qian Xu Xingli Zou Xionggang Lu | 2021 | Journal of Energy Chemistry2021，30，10： | 7 |
| 3 | Hydrogen production from coke oven gas over LiNi/γ-Al_2O_3 catalyst modified by rare earth metal oxide in a membrane reactor显示文摘The performance of LiNi/γ-Al2O3 catalysts modified by rare earth metal oxide(La2O3 or CeO2 ) packed on BCFNO membrane reactor was discussed for the partial oxidation of methane(POM) in coke oven gas(COG) at 875 C. The NiO/γ-Al2O3 catalysts with different amounts of La2O3 and CeO2 were prepared with the same preparation method and under the same condition in order to compare the reaction performance(oxygen permeation,CH 4 conversion,H 2 and CO selectivity) on the membrane reactor. The results show that the oxygen permeation flux increased significantly with LiNiREO x /γ-Al2O3(RE = La or Ce) catalysts by adding the element of rare earth especially the Ce during the POM in COG. Such as,the Li15wt%CeO2 9wt%NiO/γ-Al2O3 catalyst with an oxygen permeation flux of 24.71 ml cm 2 min 1 and a high CH 4 conversion was obtained in 875 C. The resulted high oxygen permeation flux may be due to the added Ce that inhibited the strong interaction between Ni and Al2O3 to form the NiAl2O4 phase. In addition,the introduction of Ce leads up to an important property of storing and releasing oxygen. | Zhibin Yang Yunyan Zhang Weizhong Ding Yuwen Zhang Peijun Shen Yuding Zhou Yong Liu Shaoqing Huang Xionggang Lu | 2009 | Journal of Natural Gas Chemistry2009，18，4： | 6 |
| 4 | Improvement of center segregation in high-carbon steel billets using soft reduction显示文摘Center segregation is the main reason for cup fracture of high-carbon wire rod during drawing. Therefore, to continuously produce cast billets with very low center segregation is an important objective. The soft reduction technology is considered to be an effective method to minimize center segregation. To elucidate the effect of soft reduction on the internal quality of high-carbon steel billets, soft reduction was applied with different solid fractions in the core area of billets in a laboratory casting machine. A coupled temperature/displacement finite element model was developed to calculate the solid fraction using the commercial software ABAQUS.Center segregation, center porosity, homogeneity of elements, and equiaxed crystal zone were obviously improved by applying soft reduction, especially when the solid fraction was less than 1.0. The optimal results were obtained when the solid fraction was approximately 0.9. | Wenjun Wang Xionggang Hu Linxin Ning Raimund Bülte Wolfgang Bleck | 2006 | Journal of University of Science and Technology Beijing2006，13，6： | 5 |
| 5 | ZnFe2O4 deposited on BiOCl with exposed (001) and (010) facets for photocatalytic reduction of C02 in cyclohexanol显示文摘 | Guixian Song Xionggang Wu Feng Xin Xiaohong Yin | 2017 | Frontiers of Chemical Science and Engineering2017，11，2： | 5 |
| 6 | Partial oxidation of simulated hot coke oven gas to syngas over Ru-Ni/Mg(Al)O catalyst in a ceramic membrane reactor显示文摘Hydrogen amplification from simulated hot coke oven gas(HCOG) was investigated in a BaCo 0.7 Fe 0.2 Nb 0.1 O 3 δ(BCFNO) membrane reactor combined with a Ru-Ni/Mg(Al) O catalyst by the partial oxidation of hydrocarbon compounds under atmospheric pressure. Under optimized reaction conditions,the dense oxygen permeable membrane had an oxygen permeation flux around 13.3 ml/(cm 2 min) . By reforming of the toluene and methane,the amount of H 2 in the reaction effluent gas was about 2 times more than that of original H2 in simulated HCOG. The Ru-Ni/Mg(Al) O catalyst used in the membrane reactor possessed good catalytic activity and resistance to coking. After the activity test,a small amount of whisker carbon was observed on the used catalyst,and most of them could be removed in the hydrogen-rich atmosphere,implying that the carbon deposition formed on the catalyst might be a reversible process. | Hongwei Cheng Xionggang Lu Xu Liu Yuwen Zhang Weizhong Ding | 2009 | Journal of Natural Gas Chemistry2009，18，4： | 4 |
| 7 | Facile one-step synthesis of Cu_2O@Cu sub-microspheres composites as anode materials for lithium ion batteries显示文摘Cu_2O@Cu sub-microspheres composites with a narrow particle size distribution from 300 to 500 nm was successfully fabricated by one-step synthesis through the direct thermal decomposition of copper nitrate(Cu(NO_3)_2) in octadecylamine(ODA) solvent. As anode materials for lithium ion batteries, the Cu_2 O@Cu composites obviously possess high specific capacity, excellent cyclic stability and rate capability. The coulombic efficiency is about 84% in the 1 st cycle and increases significantly up to 97.8% during successive cycles at various current densities. Even under a high current density of 500 m A g^(-1), the discharge capacity of Cu_2 O@Cu composites remains up to 200 m Ah g^(-1). The excellent electrochemical properties are ascribed to the synergistic effect between high electronic conductivity and volume-buffering capacity of metallic copper composited with Cu_2 O. | Huijie Zhou Hongbin Zhao Xuan Zhang Hongwei Cheng Xionggang Lu Qian Xu | 2018 | Journal of Materials Science & Technology2018，34，7： | 3 |
| 8 | Oxygen permeability and CO_2-tolerance of Ce_(0.8)Gd_(0.2)O_(2-δ)-Ln BaCo_2O_(5+δ) dual-phase membranes显示文摘A series of oxygen permeable dual-phase composite oxides 60 wt% Ce0.8Gd0.2O2-δ-40 wt% Ln Ba Co2O5+δ(CGO-LBCO, Ln = La, Pr, Nd,Sm, Gd and Y) were synthesized through a sol-gel route and effects of the Ln3+cations on their phase structure, oxygen permeability and chemical stability against CO2 were investigated systemically by XRD, SEM, TG-DSC and oxygen permeation experiments. XRD patterns reveal that the larger Ln3+cations(La3+, Pr3+and Nd3+) successfully stabilized the double-layered perovskite structure of sintered LBCO,while the smaller ones(Sm3+, Gd3+, and Y3+) resulted in the partial decomposition of LBCO with some impurities formed. CGO-PBCO yields the highest oxygen permeation flux, reaching 2.8×10-7mol s-1 cm-2at 925?C with 1 mm thickness under air/He gradient. The TG-DSC profiles in 20 mol% CO2/N2 and oxygen permeability experiments with CO2 as sweep gas show that CGO-YBCO demonstrates the best chemical stability against CO2, possibly due to its minimum basicity. The stable oxygen permeation flux of CGO-YBCO under CO2 atmosphere reveals its potential application in the oxy-fuel combustion route for CO2 capture. | Longfei Luo Hongwei Cheng Guangshi Li Xionggang Lu Bo Jiang | 2015 | Journal of Energy Chemistry2015，24，1： | 3 |
| 9 | Continuous electrodeposition of silicon and germanium micro/nanowires from their oxides precursors in molten salt显示文摘In recent years,silicon(Si)and germanium(Ge)materials have been considered as promising highperformance anode materials for lithium-ion batteries due to their high theoretical capacities.It is of great importance to design and synthesize micro/nanostructured Si and Ge materials.In this work,we demonstrated that Si,Ge and SiGe micro/nanowires can be continuously synthesized from their oxides precursors through molten salt electrodeposition.The electrochemical synthesis processes have been investigated systematically,and the deposited Si,Ge and SiGe micro/nanowires have been characterized and compared.The results show that the micro/nanostructured Si and Ge materials with tunable morphology can be facilely and continuously produced via molten salt electrodeposition.The electrodeposition process generally includes calcium oxide-assisted dissolution and electrodeposition processes,and the morphologies of the deposited Si and Ge products can be controlled by varying conditions.Si micro/nanowires,Si films,Ge micro/nanowires,and Ge particles can be continuously synthesized in a controlled manner. | Xingli Zou Li Ji Zhongya Pang Qian Xu Xionggang Lu | 2020 | Journal of Energy Chemistry2020，29，5： | 3 |
| 10 | A direct electrochemical route from oxides to Ti–Si intermetallics显示文摘 | Xingli Zou Xionggang Lu Chonghe Li Zhongfu Zhou | 2010 | Electrochimica Acta2010，，18： | 2 |
| 11 | Carbon dioxide reforming of methane over mesoporous nickel aluminate/γ-alumina composites显示文摘A series of x NiAl_2O_4/γ-Al_2O_3 composites with various Ni contents have been prepared via one-step partial hydrolysis of metal nitrate salts in the absence of surfactants and used for carbon dioxide reforming of methane. The characterization results demonstrated that the Ni Al_2O_4/γ-Al_2O_3 materials possessed mesoporous structures of uniform pore sizes; and the Ni^(2+) ions were completely reacted with alumina to Ni Al_2O_4 spinel in the matrices using N2 sorption, XRD, TEM, and XPS. The Ni Al_2O_4/γ-Al_2O_3 materials exhibited excellent catalytic properties and superior long-term stability for carbon dioxide reforming of methane. The effects of Ni content on the intrinsic activities and the amounts of coke disposition of the x NiAl_2O_4/γ-Al_2O_3 catalysts were discussed in detail for the carbon dioxide reforming of methane. The results revealed that the Ni particle sizes did not affect the intrinsic activity of metallic Ni, but smaller Ni particles could reduce the rate of coke deposition. | Li Zhang Xueguang Wang Xingfu Shang Mingwu Tan Weizhong Ding Xionggang Lu | 2017 | Journal of Energy Chemistry2017，26，1： | 2 |
| 12 | Total conductivity,oxygen permeability and stability of perovskite-type oxide BaCo_(0.7)Fe_(0.2)Nb_(0.1)O_(3-δ)显示文摘The total conductivity,oxygen sorption property,oxygen permeability and stability of pure perovskite-type oxide BaCo0.7Fe0.2Nb0.1O3-δ (BCFNO) in real operating conditions were investigated. Its total conductivity was measured to be 3.6 S·cm-1 at 600°C. Though the total conductivity of the BCFNO membrane is much smaller than that of the Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCFO) membrane,the oxygen permeability of the BCFNO membrane is similar to that of the BSCFO membrane. SEM observation and EDX analysis of the BCFNO and BSCFO membranes indicated that no segregation of metal ions was found for the used BCFNO membrane while the original perovskite phase of BSCFO decomposed under the experimental condition. The experimental results of oxygen permeability and stability were consistent with the analysis on the oxygen sorption property of perovskites. | Zhang, Yuwen Liu, Yong Wang, Chenglei Yang, Zhibin Ding, Weizhong Lu, Xionggang | 2009 | Rare Metals2009，28，2： | 2 |
| 13 | Oxygen permeation and phase structure properties of partially A-site substituted BaCo_(0.7)Fe_(0.225)Ta_(0.075)O_(3-δ) perovskites显示文摘Ba0.9R0.1Co0.7Fe0.225Ta0.075O3-δ(BRCFT, R = Ca, La or Sr) membranes were synthesized by a solid-state reaction. Metal cation Ca2+,La3+or Sr2+doping on A-site partially substituted Ba2+in BaCo0.7Fe0.225Ta0.075O3-δoxides, and its subsequent effects on phase structure stability, oxygen permeability and oxygen desorption were systematically investigated by XRD, TG-DSC, H2-TPR, O2-TPD techniques and oxygen permeation experiments. The partial substitution with Ca2+, La3+or Sr2+, whose ionic radii are smaller than that of Ba2+, succeeded in stabilizing the cubic perovskite structure without formation of impurity phases, as revealed by XRD analysis. Oxygen-involving experiments showed that BRCFT with A-site fully occupied by Ba2+exhibited good oxygen permeation flux under He flow, reaching about 2.3mL min-1 cm-2at 900 ℃ with 1 mm thickness. Of all the membranes, BLCFT membrane showed better chemical stability in CO2, owing to the reduction in alkalinity of the mixed conductor oxide by La doping. In addition, we also found the stability of the perovskite structure under reducing atmospheres was strengthened by increasing the size of A-site cation(Ba2+>La3+>Sr2+>Ca2+). | Bo Jiang Hongwei Cheng Longfei Luo Xionggang Lu Naijun Zhang Jizhong Liu | 2014 | Journal of Energy Chemistry2014，23，2： | 2 |
| 14 | Influence of rare earth promoters on the performance of Ni/Mg(Al)O catalysts for hydrogenation and steam reforming of toluene显示文摘CeO2-, La2O3-, and ZrO2-promoted Ni/Mg(Al)O catalysts synthesized by hydrotalcite-type precursors have been investigated with respect to catalytic activity and carbon formation in the hydrogenation and steam reforming of toluene as a model tar compound. X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) specific surface area and H2-temperature programmed reduction (TPR) were used to observe the characteristics of the prepared catalysts. The carbon formation and its amount on the used catalysts were examined by transmission electron microscope (TEM), scanning electron microscope (SEM) and thermogravimetric (TG). The trend of catalytic activity as derived from the experimental results followed the order: Ni-Ce>Ni-La>Ni-Zr>Ni. The catalyst modified with CeO2 exhibited the highest catalytic performance and had good carbon resistance in the hydrogenation and steam reforming of toluene. A toluene conversion of 96.8%, a CH4 yield of 45.2% and a CO yield of 50.4% have been achieved. The addition of promoters led to better dispersion of nickel species and higher interaction nickel-support, which were favorable for increasing the catalytic activity and effectively preventing carbon formation. | ZHANG Yuwen CHENG Hongwei LU Xionggang DING Weizhong ZHOU Guozhi | 2009 | Rare Metals2009，28，6： | 2 |
| 15 | All-climate aqueous supercapacitor enabled by a deep eutectic solvent electrolyte based on salt hydrate显示文摘Aqueous supercapacitors(SCs)have received considerable attention owing to the utilization of low-cost,non-flammable,and low-toxicity aqueous electrolytes thus could eliminate the safety and cost concerns,but their wide temperature range applications have generally suffered from frozen of electrolyte and insufficient ionic conductivity at low temperatures.Herein,we demonstrate the feasibility of using an unconventional Deep Eutectic Solvent(DES)based on H2O-Mg(ClO4)2·6 H2O binary system as electrolyte to construct all-climate aqueous carbon-based SC.This unconventional class DES completely base on inorganic substances and achieving simply mix inexpensive salts and water together at the right proportions.Attributed to the attractive feature of extremely low freeze temperature of-69℃,this electrolyte can enable the 1.8 V carbon-based SC to fully work at-40℃with outstanding cycling stability.This DES electrolyte comprising of a single salt and a single solvent without any additive will open up an avenue for developing simple and green electrolytes to construct all-climate SC. | Xudong Bu Yurong Zhang Yinglun Sun Lijun Su Jianing Meng Xionggang Lu Xingbin Yan | 2020 | Journal of Energy Chemistry2020，29，10： | 2 |
| 16 | Kinetics of hydrogen absorption and desorption of a mechanically milled MgH_2+5at%V nanocomposite显示文摘The experimental data in the MgH2-5at%V composite was summarized and used to investigate the kinetic mechanism of hydrogen absorption and desorption using a new model. The research results indicate that a coincidence of the theoretical calculation values with the experimental data has been reached and the rate-limiting step is hydrogen diffusion through the hydride phase (β phase) with the activation energy of 47.2 kJ per mole H2 for absorption and the diffusion of hydrogen in the α solid solution (α phase) with that of 59.1 kJ per mole H2 for desorption. In addition, the hydriding rate of the MgH2-V composite is 2.9 times faster than that of MgH2 powders when compared with their characteristic absorption time directly. | Qian Li Kuangdi Xu Kuochih Chou Xionggang Lu Qin Lin | 2006 | Journal of University of Science and Technology Beijing2006，13，4： | 2 |
| 17 | Gasification of iron coke and cogasification behavior of iron coke and coke under simulated hydrogen-rich blast furnace condition显示文摘To explore the iron coke application in hydrogen-rich blast furnace,which is an effective method to achieve the purpose of low carbon emissions,the initial gasification temperature of iron coke in CO_(2) and H_(2)O atmosphere and its cogasification reaction mechanism with coke were systematically studied.Iron coke was prepared under laboratory conditions,with a 0-7wt%iron ore powder addition.The properties of iron cokes were tested by coke reactivity index(CRI)and coke strength after reaction(CSR),and their phases and morphology were evolution discussed by scanning electron microscopy and X-ray diffraction analysis.The results indicated that the initial gasification temperature of iron coke decreased with the increase in the iron ore powder content under the CO_(2) and H_(2)O_((g))atmosphere.In the 40vol%H_(2)O+60vol%CO_(2) atmosphere,CRI of iron coke with the addition of 3wt%iron ore powder reached 58.7%,and its CSR reached 56.5%.Because of the catalytic action of iron,the reaction capacity of iron coke was greater than that of coke.As iron coke was preferentially gasified,the CRI and CSR of coke were reduced and increased,respectively,when iron coke and coke were cogasified.The results showed that the skeleton function of the coke can be protected by iron coke. | Kai Zhu Zhuming Chen Shuixin Ye Shuhua Geng Yuwen Zhang Xionggang Lu | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，10： | 2 |
| 18 | An integrated strategy towards the facile synthesis of core-shell SiC-derived carbon@N-doped carbon for high-performance supercapacitors显示文摘Porous active core-shell carbon material with excellent synergistic effect has been regarded as a prospective material for supercapacitors.Herein,we report an integrated method for the facile synthesis of carbide-derived carbon(CDC)encapsulated with porous N-doped carbon(CDC@NC)towards highperformance supercapacitors.Polydopamine(PDA)as nitrogen and carbon sources was simply coated on SiC nanospheres to form SiC@PDA,which was then directly transformed into CDC@NC via a onestep molten salt electro-etching/in-situ doping process.The synthesized CDC@NC with hierarchically porous structure has a high specific surface area of 1191 m^(2) g^(-1).The CDC core and NC shell are typical amorphous carbon and more ordered N-doped carbon,respectively.Benefitting from its unique dual porous structures,the CDC@NC demonstrates high specific capacitances of 255 and 193 F g^(-1) at 0.5 and20 A g^(-1),respectively.The reaction mechanism of the electro-etching/in-situ doping process has also been investigated through experimental characterizations and theoretical density functional theory calculations.It is suggested that the molten salt electro-etching/in-situ doping strategy is promising for the synthesis of active core-shell porous carbon materials with synergistic properties for supercapacitors without the need for additional doping/activation processes. | Zhongya Pang Guangshi Li Xingli Zou Chenteng Sun Conghui Hu Wei Tang Li Ji Hsien-Yi Hsu Qian Xu Xionggang Lu | 2021 | Journal of Energy Chemistry2021，30，5： | 2 |
| 19 | Oxygen Permeation and Stability of Ce_(0.8)Gd_(0.2)O_(2-δ)-PrBaCo_(2-x)FexO_(5+δ) Dual-phase Composite Membranes显示文摘Dual-phase membranes of 60 wt% Ce_(0.8)Gd_(0.2)O_(2-δ)-40 wt% Pr Ba Co2exFexO3 d(0 x 2) were prepared by a combined citrate and ethylene diamine tetraacetic acid(EDTA) complexing method. X-ray diffraction(XRD)results revealed the good chemical compatibility between ion-conducting phase CGO and electron-conducting phases PBC2 xFxO after sintering in air. The Fe ionic dopant had a significant effect on the phase structure stability and oxygen permeability under CO2 atmosphere, which was confirmed by XRD, thermogravimetrye differential scanning calorimetry(TGeD SC), scanning electron microscopy(SEM) and oxygen permeation experiments. CGOeP BC0.5F1.5O dual-phase membrane demonstrated a stable oxygen permeation flux of2.71x10-7mol cm 2s 1with 50 mol% He/CO2 as the sweep gas at 925 C, and this value was much higher than that of perovskite-type membranes. The rate-limiting step in the oxygen permeation process changed from the bulk diffusion to the surface oxygen exchange when the CGOeP BC0.5F1.5O membrane thickness decreased to 0.8 mm or less. Due to the high oxygen permeation fluxes and the excellent structural stability under CO2 atmosphere, the CGOeP BC0.5F1.5O membrane is a great potential candidate material for separating oxygen from air in the oxy-fuel combustion techniques. | Bo Jiang Hongwei Cheng Longfei Luo Xionggang Lu Zhongfu Zhou | 2014 | Journal of Materials Science & Technology2014，30，12： | 2 |
| 20 | Direct selective extraction of titanium silicide Ti 5 Si 3 from multi-component Ti-bearing compounds in molten salt by an electrochemical process显示文摘 | Xingli Zou Xionggang Lu Zhongfu Zhou Chonghe Li Weizhong Ding | 2011 | Electrochimica Acta2011，，24： | 2 |
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