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20篇 您的检索式:作者名="DONG Xinfa"
    题名 作者 年代 出处 被引量
1Selective catalytic methanation of CO in hydrogen-rich gases over Ni/ZrO_2 catalyst显示文摘Ni/ZrO2 catalysts were prepared by the incipient-wetness impregnation method and were investigated in activity and selectivity for the selective catalytic methanation of CO in hydrogen-rich gases with more than 20 vol% CO2. The result showed that Ni loadings significantly influenced the performance of Ni/ZrO2 catalyst. The 1.6 wt% Ni loading catalyst exhibited the highest catalytic activity among all the catalysts in the selective methanation of CO in hydrogen-rich gas. The outlet concentration of CO was less than 20 ppm with the hydrogen consumption below 7%, at a gas-hourly-space velocity as high as 10000 h-1 and a temperature range of 260 °C to 280 °C. The X-ray diffraction (XRD) and temperature programmed reduction (TPR) measurements showed that NiO was dispersed thoroughly on the surface of ZrO2 support if Ni loading was under 1.6 wt%. When Ni loading was increased to 3 wt% or above, the free bulk NiO species began to assemble, which was not favorable to increase the selectivity of the catalyst.Qihai Liu Xinfa Dong Xinman Mo Weiming Lin 2008Journal of Natural Gas Chemistry2008,17,3:22
2Autothermal Reforming of Methane over Ni Catalysts Supported on CuO-ZrO_2-CeO_2-Al_2O_3显示文摘与稀土元素氧化物和过渡金属氧化物在 Al2O3 的各种各样的混合氧化物上支持的镍催化剂被综合。研究集中于在镍催化剂上的到氢的甲烷的热改过在混合氧化物 ZrxCe30-xAl70O| 上支持了的汽车的测量吗?(x=5, 10, 15 ) 。Ni/Zr10Ce20Al70O| 的催化表演?比另外的催化剂的好。XRD 结果出现了到 Ni/Ce30Al70O| 的 Zr 的增加吗?阻止了 NiAl2O4 的形成并且便于 NiO 的分散。Zr10Ce20Al70O| 的 CuO 增加的效果?也被调查。催化剂在 CuO-ZrO2-CeO2-Al2O3 上支持了的镍的活动有点被影响并且 Ni/Cu5Zr10Ce20Al65O| 吗?在从 650 ~ 750 的操作温度与最高的 CH4 变换, H2 的收益,为 H2 的选择和 H2/CO 生产比率显示出最好的催化表演 ??6 号元素碳的化学符号。给词调音:甲烷;汽车热改过;氢;基于镍的催化剂;铈土;氧化锆;Xiulan Cai Xinfa Dong Weiming Lin 2006Journal of Natural Gas Chemistry2006,15,2:9
3Effect of Transition Metals (Cu, Co and Fe) on the Autothermal Reforming of Methane over Ni/Ce_(0.2)Zr_(0.1)Al_(0.7)O_δ Catalyst显示文摘The transition metals (Cu, Co, and Fe) were applied to modify Ni/Ce0.2Zr0.1 Al0.7Oδcatalyst. The effects of transition metals on the catalytic properties of Ni/Ce0.2Zr0.1 Al0.7Oδautothermal reforming of methane were investigated. The Ni-supported catalysts were characterized by XRD, TPR and XPS. Tests in autothermal reforming of methane to hydrogen showed that the addition of transition metals (Cu and Co) significantly increased the activity of catalyst under the conditions of lower reaction temperature, and Ni/Cu0.05Ce0.2Zr0.1Al0.65Oδwas found to have the highest conversion of CH4 among all catalysts in the operation temperatures ranging from 923 K to 1023 K. TPR, XRD and XPS measurements indicated that the cubic phases of CexZr1-xO2 solid solution were formed in the preparation process of catalysts. Strong interaction was found to exist between NiO and CexZr1-xO2 solid solution. The addition of Cu improved the dispersion of NiO, inhibited the formation of NiAl2O4, and thus significantly promoted the activity of the catalyst Ni/Cu0.05Ce0.2Zr0.1Al0.65Oδ.Xinfa Dong Xiulan Cai Yibing Song Weiming Lin 2007Journal of Natural Gas Chemistry2007,16,1:7
4Selective CO methanation over amorphous Ni-Ru-B/ZrO_2 catalyst for hydrogen-rich gas purification显示文摘Amorphous Ni-Ru-B/ZrO2 catalysts were prepared by chemical reduction method. The effects of Ni-Ru-B loading and Ru/Ni mole ratio on the catalytic performance for selective CO methanation from reformed fuel were studied, and the catalysts were characterized by BET, ICP, XRD and TPD. The results showed that Ru strongly affected the catalytic activity and selectivity by increasing the thermal stability of amorphous structure, promoting the dispersion of the catalyst particle, and intensifying the CO adsorption. For the catalysts with Ru/Ni mole ratio under 0.15, the CO methanation conversion and selectivity increased significantly with the increasing Ru/Ni mole ratio. Among all the catalysts investigated, the 30 wt% Ni-Ru-B loading amorphous Ni61Ru9B30/ZrO2 catalyst with 0.15 Ru/Ni mole ratio presented the best catalytic performance,over which higher than 99.9%of CO conversion was obtained in the temperature range of 230℃~250℃,and the CO2 conversion was kept under the level of 0.9%.Qihai Liu Zili Liu LieWen Liao Xinfa Dong 2010Journal of Natural Gas Chemistry2010,19,5:5
5Effect of CeO2 on the catalytic performance of Ni/Al2O3 for autothermal reforming of methane显示文摘The effect of promoter Ce on the catalytic performance of Ni/Al_2O_3 catalyst for autothermal reforming of methane to hydrogen was investigated.The catalysts were characterized by X-ray diffraction(XRD),temperature-programmed reduction (TPR),and X-ray photoelectron spectroscopy(XPS).The results indicated that the catalytic performance of the catalysts was improved with the addition of Ce.Ni/Ce_(30)Al_(70)O_δshowed the highest CH_4 conversion in operation temperatures ranging from 650℃to 850℃.At the same time,the decrease in H_2/CO ratio with increasing reaction temperature was consistent with the fact that water-gas shift reaction was thermodynamically unfavorable at higher temperatures.The XRD result indicated that adding Ce to Ni/Al_2O_3 catalyst prevented the formation of NiAl_2O_4 and facilitated the formation of NiO.The formation of NiO increased the number of active sites,resulting in higher activity.Comparing the TPR profiles of Ni/Ce_(30)Al_(70)O_δwith Ni/Al_2O_3,it could be clearly observed that with the addition of Ce,the total reduction peak areas in the middle and low temperatures increased.It was most probably that the addition of Ce inhibited the stronger interaction between Ni and Al_2O_3 to form the phase of NiAl_2O_4,and favored the formation of the strong interaction between NiO species and CeO_2.Therefore, the addition of Ce to the Ni/Al_2O_3 catalyst increased the active surface that promoted the activity of the catalyst.Xiulan Cai Xinfa Dong Weiming Lin 2008Journal of Natural Gas Chemistry2008,17,1:4
6Selective Oxidation of CO in Excess H_2 over Ru/Al_2O_3 Catalysts Modified with Metal Oxide显示文摘与金属氧化物(K2OandLa2O3 ) 修改的 Ru/Al2O3 催化剂从与硝酸盐在 Al2O3 支持上装载混合的 RuCl3 · n H2O 经由早期的湿受精方法被准备。催化剂的活动从改革气体生产的充满氢的煤气的溪流为公司(CO-PROX ) 的优先的氧化在模拟条件下面被评估,并且催化剂的表演被 XRD 和 TPR 调查。结果证明修改催化剂 Ru-K2O/Al2O3 和 Ru-La2O3/Al2O3 的活动温度被降低约 30 ° C 与纯 Ru/Al2O3,和活动温度范围相比被拓宽。Ru-K2O/Al2O3 和 Ru-La2O3/Al2O3 上的公司的变换在 140 160 ° C 超过 99% ,合适在充满氢的气体和 Ru-La2O3/Al2O3 的选择移开公司比在活跃温度范围的 Ru-K2O/Al2O3 的高。细微 methanation 反应在 220 ° C 并且在上面被检测。Xirong Chen Hanbo Zou Shengzhou Chen Xinfa Dong Weiming Lin 2007Journal of Natural Gas Chemistry2007,16,4:4
7Removal of CO from reformed fuels by selective methanation over Ni-B-Zr-O_δ catalysts显示文摘The Ni-B-Oδ and Ni-B-Zr-Oδ catalysts were prepared by the method of chemical reduction, and the deep removal of CO by selective methanation from the reformed fuels was performed over the as-prepared catalysts. The results showed that zirconium strongly influenced the activity and selectivity of the Ni-B-Zr-Oδ catalysts. Over the Ni-B-Oδ catalyst, the highest CO conversion obtained was only 24.32% under the experimental conditions studied. However, over the Ni-B-Zr-Oδ catalysts, the CO methanation conversion was higher than 90% when the temperature was increased to 220℃. Additionally, it was found that the Ni/B mole ratio also affected the performance of the Ni-B-Zr-Oδ catalysts. With the increase of the Ni/B mole ratio from 1.8 to 2.2, the CO methanation activity of the catalyst was improved. But when the Ni/B mole ratio was higher than 2.2, the performance of the catalyst for CO selective methanation decreased instead. Among all the catalysts, the Ni29B13Zr58Oδ catalyst investigated here exhibited the highest catalytic performance for the CO selective methanation, which was capable of reducing the CO outlet concentration to less than 40 ppm from the feed gases stream in the temperature range of 230-250℃, while the CO2 conversion was kept below 8% all along. Characterization of the Ni-B-Oδ and Ni-B-Zr-Oδ catalysts was provided by XRD, SEM, DSC, and XPS.Qihai Liu Xinfa Dong Yibing Song Weiming Lin 2009Journal of Natural Gas Chemistry2009,18,2:3
8CO selective methanation in hydrogen-rich gas mixtures over carbon nanotube supported Ru-based catalysts显示文摘Series of carbon nanotube supported Ru-based catalysts were prepared by impregnation method and applied successfully for complete removal of CO by CO selective methanation from H2-rich gas stream conducted in a fixed-bed quartz tubular reactor at ambient pressure.It was found that the metal promoter,reduction temperature and metal loading affected the catalytic properties significantly.The most excellent performance was presented by 30 wt% Ru-Zr/CNTs catalyst reduced at 350℃.Since it decreased CO concentration to below 10ppm from 12000ppm by CO selective methanation at the temperature range of 180-240℃,and kept CO selectivity higher than 85% at the temperature below 200℃.Characterization using XRD,TEM,H2-TPR and XPS suggests that Zr modification of Ru/CNTs results in the weakening of the interaction between Ru and CNTs,a higher Ru dispersion and the oxidization of surface Ru.Amorphous and high dispersed Ru particles with small size were obtained for 30 wt% Ru-Zr/CNTs catalyst reduced at 350℃,leading to excellent catalytic performance in CO selective methanation.Jun Xiong Xinfa Dong Lingling Li 2012Journal of Natural Gas Chemistry2012,21,4:3
9Preparation and oxygen permeation properties of SrFe(Cu)O_(3-δ) dense ceramic membranes显示文摘Mixed oxygen-ionic and electronic conducting membranes of SrFe(Cu)O3-δ were prepared by solid-state reaction method. The crystal structure, oxygen nonstoichiometry, and phase stability of the materials were studied by TGA and XRD. Oxygen permeation fluxes through these membranes were studied at operating temperature ranging from 750 to 950 °C. Results showed that doping Cu in SrFeO3-δ compound had a significant effect on the formation of single-phased perovskite structure. For SrFe1-xCuxO3-δ series materials, the oxygen nonstoi- chiometry and the oxygen permeation flux increased considerably with the increase of Cu-doping content (x = 0.1–0.3). The sintering property of the membrane decreased significantly when the Cu substitution amount reached 40%. SrFe0.7Cu0.3O3-δ showed high oxygen permeation flux, but SrCuO2 and Sr2Fe2O5 phases formed in the compound after oxygen permeation test induced cracks in the membrane.Heng Zhang Tingting Wang Xinfa Dong Weiming Lin 2009Journal of Natural Gas Chemistry2009,18,1:2
10Hydrogen production by glycerol reforming in supercritical water over Ni/MgO-ZrO_2 catalyst显示文摘Nano ZrO2 and MgO-ZrO2 were prepared by a self-assembly route and were employed as the support for Ni catalysts used in hydrogen production from glycerol reforming in supercritical water (SCW). The reforming experiments were conducted in a tubular fixed-bed flow reactor over a temperature range of 600-800℃. The influences of process variables such as temperature, contact time, and water to glycerol ratio on hydrogen yield were investigated and the catalysts were charactered by ICP, BET, XRD and SEM. The results showed that high hydrogen yield was obtained from glycerol by reforming in supercritical water over the Ni/MgO-ZrO2 catalysts in a short contact time. The MgO in the catalyst showed significant promotion effect for hydrogen production likely due to the formation of the alkaline active site. Even when the glycerol feed concentration was up to 45 wt%, glycerol was completely gasified and transfered to the gas products containing hydrogen, carbon dioxide, and methane along with small amounts of carbon monoxide. At a diluted feed concentration of 5 wt%, near theoretical yield of 7 mole of H2/mol of glycerol could be obtained.Qihai Liu Liewen Liao Zili Liu Xinfa Dong 2013Journal of Energy Chemistry2013,22,4:2
11Development ofThickness Measuring Instrument Based on Reflecting Infrared显示文摘Du Fangxun Dong Xinfa Wang Yue 2006Journal of University of Science and Technology of Suzhou(Engineering and Technology)2006,,:1
12Effects of ZrO2promoter on catalytic performance of CuZnAlO catalysts for production of hydrogen by steam reforming of methanol显示文摘LI Yongfeng DONG Xinfa LIN Weiming 2004International Journal of Hydrogen Energy2004,29,6:1
13Environment-oriented low- cost porous mullite ceramic membrane supports fabricated from coal gangue and bauxite 显示文摘Lti Qikai Dong Xinfa Zhu Zhiwen 2014J Hazard Mater2014,273,30:1
14Recycling of waste fly ash for production of porous mullite ceramic membrane supports with in- creased porosity 显示文摘Cao Jingjie Dong Xinfa Li Lingling 2014J Eur Ceram Soe2014,34,13:1
15Enhancing the photocatalytic H2evolution activity of red phosphorous by using noble-metal-free Ni(OH)2under photoexcitation up to 700 nm显示文摘Dang Haifeng Dong Xinfa Dong Yingchao 2014RSC Advances2014,4,44:1
16Environment-oriented low-cost porous mullite ceramic membrane supports fabricated from coal gangue and bauxite显示文摘Qikai Xinfa Dong Zhiwen Zhu Yingchao Dong 2014Journal of Hazardous Materials2014,,:1
17TiOz nano- tubes coupled with Nano-Cu(OH) 2 for highly efficient pho- tocatalytic hydrogen production 显示文摘Dang Haifeng Dong Xinfa Dong Yingehao 2012International Journal of Hydrogen Energy2012,37,5:1
18Methanol Steam Reforming Catalysts for Fuel Cell Driven Electric Vehicles显示文摘Cu/ZnAlO catalysts derived from hydroxycarbonate precursors containing hydrotalcite-likelayered double hydroxides (LDHs) were studied. The influence on the performance of the catalysts wasalso studied when the Al in the Cu/ZnAlO catalyst was partly or completely replaced by Zr or Ce.Yongfeng Li, Xinfa Dong, Weiming LinSouth China University of Technology, Guangzhou 510640, China 2003Journal of Natural Gas Chemistry2003,12,1:0
19Carbon Nanotubes Supported Pt-Ru-Ni as Methanol Electro-Oxidation Catalyst for Direct Methanol Fuel Cells显示文摘碳 nanotubes (CNT ) 支持了 Pt-Ru, Pt-Ru-Ni 催化剂被金属先锋的化学减小在室温与钠氢硼化钠准备。催化剂的结晶的性质和作文被X射线衍射描绘( XR ,氘的符号)并且精力为甲醇电镀物品氧化的散X光检查( EDX )分析,和催化活和稳定性被电气化学的阻抗光谱学( EIS )测量,线性打扫 voltammetries ( LSV ),并且 chronoamperometry (20号元素钙的化学符号)。催化剂展出的结果表演以脸为中心立方(费用) 结构。Pt-R.u-Ni/CNTs 催化剂的粒子大小是大约 4.8 nm。Pt-Ru-Ni/CNTs 催化剂的催化活和稳定性比 Pt-Ru/CNTs 催化剂的那些高。给词调音:碳 nanotubes;Pt-Ru-Ni/CNTs;甲醇电镀物品氧化;Fei Ye Shengzhou Chen Xinfa Dong Weiming Lin 2007Journal of Natural Gas Chemistry2007,16,2:0
20Nickel sulfide modified TiO_2 nanotubes with highly efficient photocatalytic H_2 evolution activity显示文摘TiO_2 nanotubes(TNTs) with nickel sulfide(NiS) co-catalyst were prepared by a simple solvothermal method and characterized by X-ray diffraction, transmission electron microscope, N_2-physisorption, UV–vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. Loading NiS nano-clusters can significantly enhance the photocatalytic H_2 evolution performance of TNTs. The optimum NiS loading content was found to be 8 wt% and the corresponding hydrogen production rate is ca. 7486 μmol/h/g, being about 79 times higher than that of pure TNTs. This enhancement of photocatalytic H_2 evolution was attributed to the synergistic effect between NiS and TNTs.Jiasheng Huang Zhisheng Shi Xinfa Dong 2016Journal of Energy Chemistry2016,25,1:0
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