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| 1 | Partial hydrogenation of adiponitrile to 6-aminocapronitrile over Ni/α-Al_2O_3 catalyst promoted with K_2O and La_2O_3显示文摘A novel K2O and La2O3 promoted nickel catalyst supported on a-Al2O3 was prepared by co-impregnation method, and it exhibited higher activity and 6-aminocapronitrile selectivity than Ni/a-Al2O3 during the hydrogenation of adiponitrile in the absence of ammonia, i.e., K2O and La2O3 improved the performance of the nickel-based catalyst. | Lei Zhao, Cai Yun Wang, Ji Xiang Chen , Ji Yan Zhang Department of Catalysis Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China | 2007 | Chinese Chemical Letters2007，18，6： | 5 |
| 2 | Regioselective Polymerizations of α-Olefins with an α-Diamine Nickel Catalyst显示文摘Polymerizations of linear α-olefins(CnH2n, CH2=CH―R, R = Cn-2) catalyzed by early transition metals typically afford amorphous polymers with alkyl chains(Cn-2), while chain-straightening polymerizations of α-olefins with nickel-based catalysts produce semicrystalline polyolefins. Polymerizations of various α-olefins were carried out using an α-diamine nickel catalyst with a significantly distorted chelating ring. The influences of temperature, monomer concentration, and chain length of α-olefins on polyolefin microstructure were examined in detail. The α-diamine nickel catalyst realized highly regioselective 2,1-insertion of α-olefins regardless of reaction temperature and monomer concentration. Increased chain length of α-olefins led to the formation of more linear polyolefin.Semicrystalline polyolefins with high melting temperatures(Tm) were made from α-olefins through highly regioselective 2,1-insertion and precise chain-straightening. | Heng Liao Jie Gao Liu Zhong Hai-Yang Gao Qing Wu | 2019 | Chinese Journal of Polymer Science2019，37，10： | 4 |
| 3 | Design strategies of highly selective nickel catalysts for H2 production via hydrous hydrazine decomposition: a review显示文摘Hydrazine, a widely used liquid propellant, has the potential to be employed as a hydrogen source in certain instances and has therefore attracted considerable attention; consequently, the complete decomposition of hydrazine with 100% H_2 selectivity under mild conditions has become the current research focus for catalyst design. In this review, the strategies for the design of efficient catalysts are summarized for complete hydrazine decomposition. The first part of this review introduces the mechanism of hydrazine decomposition, while the second part illustrates the key factors influencing the H_2 selectivity of nickel catalysts, including the effects of alloying, alkali promoter addition and strong metal–support interactions.Finally, the critical elements of catalyst design employed in industrial applications are analyzed. | Lei He Binglian Liang Yanqiang Huang Tao Zhang | 2018 | National Science Review2018，5，3： | 3 |
| 4 | A general bimetal-ion adsorption strategy to prepare nickel single atom catalysts anchored on graphene for efficient oxygen evolution reaction显示文摘Single-atom catalysts (SACs) supported on two-dimensional (2D) materials are highly attractive for maximizing their catalytic activity.However,graphene based SACs are primarily bonded with nitrogen and carbon sites,resulting in poor performance for the oxygen evolution reaction (OER).Herein,we develop a general bimetal-ion adsorption strategy for the synthesis of individually dispersed Ni SACs anchored on the oxygenated sites of ultrathin reduced graphene oxide as efficient OER electrocatalysts.The resultant Ni SACs for OER in alkaline electrolyte exhibit a highly stable overpotential of 328 mV at the current density of 10 mA cm^-2,and Tafel slope of 84 mV dec^-1 together with long-term durability and negligible degradation for 50 h,which is greatly outperform its counterparts of nitrogen bonded Ni SACs (564 mV,364 mV dec^-1) and Ni(OH)2 nanoparticles anchored on graphene (450 mV,142 mV dec^-1),and most reported Ni based OER electrocatalysts.Furthermore,the extended X-ray absorption fine structure at the Ni K-edge and theoretical simulation reveal that the nickel-oxygen coordination significantly boost OER performance.Therefore,this work will open numerous opportunities for creating novel-type 2D SACs via oxygen-metal bonding as highly robust OER catalysts. | Yingqi Xu Weifeng Zhang Yaguang Li Pengfei Lu Zhong-Shuai Wu | 2020 | Journal of Energy Chemistry2020，29，4： | 3 |
| 5 | Electrolysis of ammonia for hydrogen production catalyzed by Pt and Pt-Ir deposited on nickel foam显示文摘Electrolysis of ammonia in alkaline electrolyte solution was applied for the production of hydrogen. Both Pt-loaded Ni foam and Pt-Ir loaded Ni foam electrodes were prepared by electrodeposition and served as anode and cathode in ammonia electrolytic cell, respectively. The electrochemical behaviors of ammonia in KOH solution were individually investigated via cyclic voltammetry on three electrodes, i.e. bare Ni foam electrode, Pt-loaded Ni foam electrode and Pt-Ir loaded Ni foam electrode. The morphology and composition of the prepared Ni foam electrode were analyzed by scanning electron microscopy(SEM) and X-ray diffraction(XRD). Effects of the concentration of electrolyte solution and temperature of electrolytic cell on the electrolysis reaction were examined in order to enhance the efficiency of ammonia electrolysis. The competition of ammonia electrolysis and water electrolysis in the same alkaline solution was firstly proposed to explain the changes of cell voltage with the electrolysis proceeding. At varying current densities, different cell voltages could be obtained from galvanostatic curves.The low cell voltage of 0.58 V, which is less than the practical electrolysis voltage of water(1.6 V), can be obtained at a current density of2.5 mA/cm2. Based on some experimental parameters, such as the applied current, the resulting cell voltage and output of hydrogen gas, the power consumption per gram of H2produced can be estimated. | Min Jiang Dandan Zhu Xuebo Zhao | 2014 | Journal of Energy Chemistry2014，23，1： | 1 |
| 6 | Characterization and Catalytic Properties of a Rapidly Quenched Ni-RE-P-Al Catalyst显示文摘A Ni-RE-P-Al catalyst prepared by alkaline extraction of a rapidly quenched Ni-RE-P-Al alloy was characterized by means of ICP, BET, XRD, XPS and TEM. The results show that the rapidly quenched Ni-RE-P-Al alloy contained less crystalline Al3Ni than Al-Ni alloy. After alkaline extraction, most of Al in the Ni-RE-P-Al alloy was leached out and the resulted Ni-RE-P-Al catalyst presented a sponge structure similar to Raney Ni. Although crystalline Ni is the major phase in the Ni-RE-P-Al catalyst and Raney Ni, amorphous Ni-P phase has been detected in the Ni-RE-P-Al catalyst. Studies on catalytic hydrogenation of toluene, phenyl ethylene, acetylene benzene, nitrobenzene, cyclohexanone and adiponitrile in liquid phase showed that the activity and selectivity of this Ni-RE-P-Al catalyst are superior to those of Raney Ni, especially at low temperatures. The amorphous phase is considered to be responsible for its superior catalytic properties. | MA Ai-zeng LU Wan-zhen ZONG Bao-ning and MIN En-ze (Research Institute of Petroleum Processing, Beijing, 100083, P. R. China) | 2000 | Chemical Research in Chinese Universities2000，16，1： | 1 |
| 7 | 沸石负载Ni催化剂在甲烷干重整中的稳定性(英文)显示文摘Ni/γ-Al2O3 , Ni/Y-zeolite, and Ni/H-ZSM-5 catalysts were prepared using the incipient wetness impregnation method. Their catalytic performance in dry reforming of methane was studied. The fresh and used catalysts and deposited carbon were characterized using H2 temperature-programmed reduction, temperature-programmed oxidation, N2 adsorption-desorption, X-ray diffraction, and thermogravimetric analysis. The H-ZSM-5-supported Ni catalyst proved to be more stable than the other two catalysts, as it had the lowest carbon deposition. | Anis H. FAKEEHA Wasim U. KHAN Ahmed S. AL‐FATESH Ahmed E. ABASAEED | 2013 | 催化学报2013，34，4： | 0 |
| 8 | Effect of calcination temperature on steam reforming activity of Ni-based pyrochlore catalysts显示文摘This work served as the second part of a study evaluating the effect of calcination temperature(700-1000℃) on Ni-based lanthanum zirconate pyrochlore catalysts for methane steam reforming.A previous study(Haynes et al.Ceram.Int.2017(43) 16744) provided a thorough characterization of the material properties for the catalysts used here,and this study focuses on the evaluation of catalytic activity.The activity was assessed by two different experimental studies:the effect of reaction temperature using a temperature programmed surface reaction(TPSR),and the effect of reaction pressure.The results demonstrate a complex interaction between the Ni particles and surface LaOx species under the methane steam reforming conditions.Specifically,the material calcined at the lowest temperature(700℃) possesses the highest activity and selectivity,which is attributed to smaller and more welldispersed Ni particles on the surface,and,more importantly,a lesser degree La enrichment at the surface.All catalysts were deactivated by steam to NiO under all conditions tested,but at certain low reaction pressure(p=0.23 MPa) conditions the materials calcined at 700-900℃ are able to completely recover equilibrium activity in-situ that is then robust and stable under both low and high reaction pressures(p=1.8 MPa) suggesting the formation of a synergistic relationship between Ni and La for syngas production.However,exposure of a fresh material to high reaction pressures leads to a rapid and irreversible loss in both CH4 conversion and syngas selectivity whether in the fresh(no pretreatment),or pretreated(steam,H2 or Ar only at 800℃) form for any catalyst.The mechanism for deactivation appears to be due to the presence of LaOx species that become mobile,possibly by the formation of La-OH,and covers the active Ni particles and inhibits sites responsible for the CH4 decomposition. | Daniel J.Haynes Dushyant Shekhawat David Berry Amitava Roy James J.Spivey | 2020 | Journal of Rare Earths2020，38，7： | 0 |
| 9 | Catalyst Enhanced Chemical Vapor Depositionof Nickel on Polymer Surface显示文摘Catalyst enhanced chemical vapor deposition of nickel film on high Tg polymers such as teflon(PTFE), polyimide(PI), and polysulfone(PS) was investigated by hot wall and cold wall CVD, in which Ni(dmg)_2, Ni(acac)_2, Ni(hfac)_2, Ni(TMHD)_2, and Ni(cp)_2 are used as precursors, and palladium complexes are used as catalysts. The films obtained were shiny with silvery color. The Ni was metallic and the purity of Ni was about 92%-95% from XPS analysis. SEM micrographs show that the film had good morphology. The conductivity of the film was about 0.5-4 W·cm^(-1). Ni films had good adhesion with polyimide and polysulfone. | 俞亚冕 LIU Yiqin WANG Jun 卿山 俞开潮 | 2019 | Journal of Wuhan University of Technology(Materials Science)2019，34，2： | 0 |
| 10 | Microwave-assisted synthesis of L-cysteine-capped nickel nanoparticles for catalytic reduction of 4-nitrophenol显示文摘A simple and efficient microwave-assisted procedure for synthesis of L-cysteine-capped nickel nanoparticles(cyst-Ni NPs) in ethylene glycol solvent was demonstrated. The as-synthesised NPs were characterised by ultraviolet–visible(UV–Vis) spectrophotometer, Fourier transform infrared(FTIR) spectroscopy, transmission electron microscopy(TEM) and X-ray diffractometry(XRD). The cyst-Ni NPs are proved to be excellent heterogeneous catalysts for the 100% reduction of 4-nitrophenol(4-NPh) in the presence of reductant(Na BH4)within reaction time of 40 s. In contrast, Raney nickel in similar sample environments shows only 25.5% reduction.The kinetic and energetic behaviours of cyst-Ni NPs were also studied, and the reduction reaction is determined to follow pseudo-first-order kinetics with a rate constant value of 0.115 s-1 and activation energy of 36.1 kJ·mol-1. In addition to its high catalytic competence, cyst-Ni NPs catalyst exhibits excellent recyclability with negligible catalytic poisoning. | Nazar Hussain Kalwar Ayman Nafady Razium Ali Soomro Sirajuddin Syed Tufail Hussain Sherazi Abdul Rauf Khaskheli Keith Richard Hallam | 2015 | Rare Metals2015，34，10： | 0 |
| 11 | Direct Vapor Phase Carbonylation of Methanol over NiCl_2/C Catalyst显示文摘 | PENG Feng | 2000 | Chemical Research in Chinese Universities2000，16，2： | 0 |
| 12 | Manufacture of Raney Ni catalyst with metastable Ni_2Al_3 by high energy milling显示文摘The Ni Al alloy containing Cr, Fe additives were prepared as Raney Ni catalyst by high energy milling. The size and surface state of Ni Al alloy powder were studied by particle size analyzer and sanning electron microscopy, the structure was analyzed by XRD and Mssbauer methods. The results showed that after a high energy milling (HEM), the Ni Al alloy transforms to a nano scale NiAl structure with rich Al. By annealing the alloy, a metastable Ni 2Al 3 phase can be obtained. | Teng Ronghou(滕荣厚) 1, Sun Shijie(孙世杰) 1, Liu Silin(刘思林) 1, Liu Xuequan(柳学全) 1, Ma Ruzhang(马如璋) 2,Liu Tao(刘 涛) 3 1. Functional Materials Institute, Central Iron & Steel Research Institute, Beijing 100081, P.R.China 2. Depar | 1999 | 中国有色金属学会会刊:英文版1999，9，3： | 0 |
| 13 | POLYMERIZATION OF p-DIETHYNYLBENZENE INITIATED BY Ni(C≡CC_6H_4C≡CH)_2(PPH_3)_2显示文摘Homogeneous polymerization ofp-diethynylbenzene initiated by nickel acetylide Ni(C≡CC6H4C≡CH)2(PPh3)2 has been investigated in terms of different solvents, addition agents, atmosphere gases, catalyst concentrations, monomer concentrations and polymerization temperatures. The yield and catalytic efficiency approach 88% and 11.1 kg polymer/mol Ni, respectively, under the optimum conditions: [cat] = 0.01 mol/L, [M] = 1.0 mol/L, NEt3/cat (mol ratio) = 3~5, 1,4dioxane/toluene (volume ratio) = 1 and T = 25℃ for 5 h. The polymerization rate equation can be expressed as Rp = kp[M][cat]2, where kp = 0.47 L2 * mol-2 * S-1 (25 ℃ ). The overall polymerization activation energy was found to be 203 kJ * mol-1. Poly(p-diethynylbenzene) so obtained is soluble in THF, CHCl3 and toluene with weight-average molecular weights as high as 27, 100 and a rich-trans extended π-conjugated polyene chain structure with pendent groups of p-C6H4C≡CH. | Mu-jie Yang Xiao-wei Zhan Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027, China Present address: Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China | 2001 | Chinese Journal of Polymer Science2001，19，3： | 0 |
| 14 | MOF-derived nitrogen-doped iron–nickel oxide carbon nanotubes as efficient oxygen electrocatalyst for long-life rechargeable zinc–air batteries显示文摘Electrocatalysts with high activities are crucial for highenergy-density Zn-air batteries.However,the sluggish kinetics of oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)on the electrocatalysts hindered the development of Zn-air batteries.Herein,a new class of MOF-derived nitrogen-doped carbon nanotubes encapsulated with bimetallic oxide(FeNiO@NCNT)through facile pyrolysis strategy is reported.The FeNiO@NCNT exhibits high catalytic activities for both OER and ORR. | Tao Zhao Yu-Hang Wu Zhi-Rong Song Xue Wang Rui-Lian Yin Hui Xu Hui Cui Xie-Hong Cao Jun-Kuo Gao | 2023 | Rare Metals2023，42，10： | 0 |
| 15 | Effects of Fe additive on diamond crystallization from carbonyl nickel powders-C system under HPHT condition显示文摘In this paper, diamond crystallization from carbonyl nickel powders-C and carbonyl nickel powders + Fe–C systems are investigated in detail at a pressure of 6.0 GPa and temperatures ranging from 1410°C–to 1435°C by temperature gradient growth. The effects of Fe additive on the crystal morphology are discussed in the diamond crystallization process.Furthermore, Fourier infrared measurement results indicate that the spectrum of the diamond obtained from Ni + Fe–C system after annealing treatment is nearly consistent with that of natural diamond crystal. We believe that this study is of benefit to a further understanding of the growth mechanism of natural diamond. | 李勇 贾晓鹏 冯云光 房超 樊丽娟 李亚东 曾祥 马红安 | 2015 | Chinese Physics B2015，24，8： | 0 |
| 16 | Effects of Solution Chemistry Conditions and Adsorbent Surface Properties on Adsorption of Ni(Ⅱ) on Laiyang Bentonite显示文摘The effects of solution chemistry conditions and adsorbent surface properties on the adsorption of Ni(II) on Laiyang bentonite were investigated via the batch technique. Potentiometric and mass titration techniques were employed in the batch experimental methods, and the results showed that the point of zero net proton charge(PZNPC) of bentonite at different ionic strength denoted p HPZNPC to be 8.2±0.1. The removal of Ni(II) from the solution increased with an increasing bentonite dosage, with the maximum removal efficiency equating up to 99%. The adsorption of Ni(II) on bentonite increased with an increasing p H value at a p H value of <8.5, and reached a Ni(II) removal efficiency of >99% at a p H value of >10.2. The Ni(II) adsorption performance exhibited different responses to cations(K+, Na+) but was not influenced by the background anions(NO3-, Cl-, and Cl O4-). The adsorption of Ni(II) was dominated by the outer-sphere surface complexation and ion exchange with Na+/H+ on bentonite surface at low p H value, whereas the inner-sphere surface complexation and surface precipitation were the main adsorption mechanisms at high p H value. The adsorption isotherms of Ni(II) on bentonite can be described well by the Langmuir model. The thermodynamic parameters of adsorption, including the Gibbs free energy, the enthalpy change, and the entropy change, at different temperatures indicated that the adsorption of Ni(II) on bentonite was endothermic and spontaneous. | Cao Xiaoqiang Yan Bingqi Xue Jianliang Wang Qian Wang Yaping Huang Yongqing Zhang Yan Lyu Xianjun | 2016 | China Petroleum Processing & Petrochemical Technology2016，18，3： | 0 |
| 17 | Promotion effect of Re additive on the bifunctional Ni catalysts for methanation coupling with water gas shift of biogas: Insights from activation energy显示文摘The cheap manganese sand was first modified by H2O2 and was further creatively utilized as Ni-based catalyst support.In order to enhance the catalytic performance,Re was added into the Ni-based catalyst and the promotion effect of Re on the methanation coupling with water gas shift of biogas was investigated from the perspective of activation energy.It was found that CH4 and CO2 formation rates,which separately represented the reaction rate of methanation and water gas shift,were both enhanced after Re addition compared to non-added catalyst.Two kinetics models including empirical model and K-model were employed and from the results of calculation,it showed that Re selectively decreased the activation energy of methanation reaction and had little impact on the activation energy of water gas shift.The increased CO2 formation rate was owing to the assistance of accelerated H2O production from methanation rather than the activation energy change in water gas shift. | Xinxin Dong Baosheng Jin Zhiwei Kong Yiqing Sun | 2020 | Chinese Journal of Chemical Engineering2020，28，6： | 0 |
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