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| 1 | A Novel Family of Catalysts Comprising a Supported Metaland a Supported Aqueous-Phase Catalyst显示文摘 | ZHU Hejun, DING Yunjie, YAN Li, XIONG Jianmin, LI Xuemin, ZHANG Lianzhong, LIN Peizi, HUANG Shiyu, LIN Liwu (Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China) | 2003 | 催化学报2003，24，2： | 3 |
| 2 | Geometry-preserving full-waveform tomography and its application in the Longmen Shan area显示文摘Classic L2-norm-based waveform tomography is often plagued by insurmountable cycle skipping problems;as a result,the iterative inversion falls into local minima,yielding erroneous images.According to the optimal transportation theory,we adopt a novel geometry-preserving misfit function based on the quadratic Wasserstein metric(W2-norm),which improves the stability and convexity of the inverse problem.Numerical experiments illustrate that W2-norm-based full-waveform tomography has a larger convergence radius and a faster convergence rate than the L2-norm and can effectively mitigate cycle skipping issues.We apply this method to the Longmen Shan area and obtain a reliable lithospheric velocity model.Our tomographic results indicate that the crystalline crust underlying the Sichuan Basin wedges into the crustal interior of the Tibetan Plateau,and the mid-lower crust of the eastern Tibetan Plateau is characterized by low shear-wave velocities,indicating that ductile crustal flow and strong interactions between terranes jointly dominate the uplift behavior of the Longmen Shan.Furthermore,we find that large earthquakes(e.g.,the Wenchuan and Lushan events)occur not only at the junction between high-and low-velocity regions but also in the transition zone from positive to negative radial anisotropy.These findings improve our understanding of the mechanism responsible for large earthquakes in this region. | Xingpeng DONG Dinghui YANG Hejun ZHU Yun CHEN | 2022 | Science China Earth Sciences2022，65，3： | 2 |
| 3 | Influence of lanthanum on the performance of Zr-Co/activated carbon catalysts in Fischer-Tropsch synthesis显示文摘在 Zr-Co/activated 碳(交流) 上装载催化剂的 La 的影响为 Fischer-Tropsch 合成被学习了。催化剂样品被 XRD, TPR, CO-TPD,和温度描绘规划公司加氢。催化性质在一个固定的床反应堆被评估。试验性的结果证明那公司变换从 86.4% ~ 92.3% 增加了,到甲烷的选择从 14.2% ~ 11.5% 减少了,当装载的低 La (La =0.2wt%) 被增加进 Zr-Co/AC 催化剂时, C 5+ 选择从 71.0% ~ 74.7% 增加了。然而, La 的高装载(La = 0.3 1.0 wt%) 将减少催化剂活动以及 C 5+ 选择和增加甲烷选择。XRD 结果显示了有的那修改 La 的 Zr-Co/AC 催化剂公司的分散上的小效果催化剂。但是, TPR, CO-TPD,和温度的结果规划了显示的公司加氢技术钴减小的程度被发现极大地影响催化剂的活动和选择。La 的小数量的增加增加了 Zr-Co/AC 催化剂的 reducibility 并且制止了甲烷的形成并且改进了选择长锁住烃。然而, La 的过量导致了公司的 reducibility 的减少催化剂因此导致了更高的 methanation 活动。 | Tao Wang Yunjie Ding Yuan Lu Hejun Zhu Liwu Lin | 2008 | Journal of Natural Gas Chemistry2008，17，2： | 2 |
| 4 | Effect ofLa203 Doping on Syntheses of C1-C18 Mixed Linear a-Alcohols from Syngas over the Co/Ac Catalysts 显示文摘 | Jiao Guiping Ding Yunjie Zhu Hejun | 2009 | Appl Catal A2009，364，12： | 1 |
| 5 | Development of a rapid measurement system for coarse aggregate morphological parameters显示文摘Morphological parameters of coarse aggregates,including the angularity index (Al),flat and elongated ratio,flatness ratio,and sphericity,strongly affect the performance of asphalt concrete.A device must be developed to efficiently and accurately measure these parameters.Herein,a charge-coupled device camera and a linear profile scanner are combined to evaluate the parameters.The Al is calculated using three methods.The results show that the fitted-ellipse method provides superior results among the three Al measurement methods.Moreover,the use of a linear profile scanner improves the Al measurement accuracy.Therefore,the proposed combination has high measurement efficiency and is suitable for batch inspections. | Hejun Zhu Huaiying Fang Yuanyuan Cai Ning Lv | 2020 | Particuology2020，18，3： | 1 |
| 6 | Hydroformylation of methyl-3-pentenoate over a phosphite ligand modified Rh/SiO_2 catalyst显示文摘亚磷酸盐 ligand 修改了 Rh/SiO 2 催化剂为内部石蜡的 hydroformylation 被开发了到线性醛,它显示出高活动和 regioselectivity 并且能被过滤在一个压热器在反应以后容易分开。在反应的催化剂的表演上的反应温度和 syngas 压力的效果也被调查。 | Xianming Li Yunjie Ding Guiping Jiao Jingwei Li Li Yan Hejun Zhu | 2008 | Journal of Natural Gas Chemistry2008，17，4： | 1 |
| 7 | Effect of Vanadium Promotion on Activated Carbon-Supported Cobalt Catalysts in Fischer–Tropsch Synthesis显示文摘 | Tao Wang Yunjie Ding Jianmin Xiong Li Yan Hejun Zhu Yuan Lu Liwu Lin | 2006 | Catalysis Letters (-)2006，，1： | 1 |
| 8 | Catalytic Liquefaction of Coal with Highly Dispersed FeS Impregnated In-situ显示文摘 | Hu Haoquan Bai Jinfeng Zhu Hejun | 2001 | Energy and Fuels2001，15，4： | 1 |
| 9 | Optimization of the Swept Volume Ratio between the Compressor and the Active Displacer in an Efficient 20 K Thermal-Coupled Two-Stage Pulse Tube Cryocooler显示文摘As an important component of the stirling-type pulse tube cryocooler(SPTC),an efficient phase shifter can significantly improve the cooling capacity.Compared to the common phase shifter,the active warm displacer(AWD)has a wider phase adjustment range and therefore can obtain a better phase relationship easily.Based on a two-stage thermal-coupled SPTC operating in the 20 K range,this paper studied the influence of the swept volume ratio between the compressor and displacer.The research found that the swept volume ratio changes the cooling capacity and efficiency of the cryocooler mainly by changing the phase difference between the pressure wave and the volume flow at the cold end.It was found from the results of the simulation and experiments that there is an optimal displacement of the displacer(Xd)of 2.5 mm and an optimal phase angle of 15°to obtain the highest cooling efficiency while the displacement of the compressor is constant.The cooling capacity at 20 K is 1.3 W while the input electrical power of the second stage compressor is 202 W,which indicates an overall relative Carnot efficiency(rCOP)of 0.055 in terms of input electrical power.In addition,due to the reasonable setting of precooling temperature and capacity,the swept volume ratio and phase at the maximum cooling capacity and maximum efficiency are consistent in this study.The research improves the understanding of phase shifters and has guiding significance for the optimization of the SPTC working below 20 K. | YIN Wang LIU Shaoshuai SONG Jiantang WU Wenting HUI Hejun JIANG Zhenhua LI Nanxi ZHU Haifeng WU Yinong | 2023 | Journal of Thermal Science2023，32，6： | 0 |
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