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31篇 您的检索式:作者名="Xiulian Pan"
    题名 作者 年代 出处 被引量
1Nitrogen doped carbon catalyzing acetylene conversion to vinyl chloride显示文摘Commercial production of vinyl chloride from acetylene relies on the use of HgCl2as the catalyst, which has caused severe environmental problem and threats to human health because of its toxicity. Therefore, it is vital to explore alternative catalysts without mercury. We report here that N-doped carbon can catalyze directly transformation of acetylene to vinyl chloride. Particularly, N-doped high surface area mesoporous carbon exhibits a rather high activity with the acetylene conversion reaching 77% and vinyl chloride selectivity above 98% at a space velocity of 1.0 mL min-1 g-1and 200 ℃. It delivers a stable performance within a test period of 100 h and no obvious deactivation is observed,demonstrating potentials to substitute the notoriously toxic mercuric chloride catalyst.Xingyun Li Xiulian Pan Xinhe Bao 2014Journal of Energy Chemistry2014,23,2:11
2Enhanced aromatic selectivity by the sheet-like ZSM-5 in syngas conversion显示文摘Aromatics are important basic chemicals. However, direct conversion of syngas via the conventional Fischer-Tropsch synthesis produces little aromatics. We presented herein that a bifunctional composite of ZSM-5 in combination with Zn Cr Oxcatalyzes syngas conversion to aromatics. Particularly, ZSM-5 crystals with a sheet-like morphology can enhance significantly the aromatization activity. The lower length ratio of the b/a axes of the crystals, the more aromatics form but without influencing the selectivity of small molecules such as CH4 and C2–C4. Since the acid properties and the Al chemical environment were not altered while the morphology changed, the enhanced aromatic selectivity is likely attributed to the favored diffusion of aromatics in these sheet-like crystals.Junhao Yang Ke Gong Dengyun Miao Feng Jiao Xiulian Pan Xiangju Meng Fengshou Xiao Xinhe Bao 2019Journal of Energy Chemistry2019,28,8:10
3Understanding nano effects in catalysis显示文摘Catalysis, as a key and enabling technology, plays an increasingly important role in ields ranging from energy, environment and agriculture to health care. Rational design and synthesis of highly eicient catalysts has become the ultimate goal of catalysis research. hanks to the rapid development of nanoscience and nanotechnology, and in particular a theoretical understanding of the tuning of electronic structure in nanoscale systems, this element of design is becoming possible via precise control of nanoparticles' composition, morphology, structure and electronic states. At the same time, it is important to develop tools for in situ characterization of nanocatalysts under realistic reaction conditions, and for monitoring the dynamics of catalysis with high spatial, temporal and energy resolution. In this review, we discuss coninement efects in nanocatalysis, a concept that our group has put forward and developed over several years. Taking the conined catalytic systems of carbon nanotubes, metal-conined nano-oxides and 2D layered nanocatalysts as examples, we summarize and analyze the fundamental concepts, the research methods and some of the key scientiic issues involved in nanocatalysis. Moreover, we present a perspective on the challenges and opportunities in future research on nanocatalysis from the aspects of:(1) controlled synthesis of nanocatalysts and rational design of catalytically active centers;(2) in situ characterization of nanocatalysts and dynamics of catalytic processes;(3) computational chemistry with a complexity approximating that of experiments; and (4) scale-up and commercialization of nanocatalysts.Fan Yang Dehui Deng Xiulian Pan Qiang Fu Xinhe Bao 2015National Science Review2015,2,2:9
4Direct production of light olefins from syngas over a carbon nanotube confined iron catalyst显示文摘Iron particles confined in carbon nanotube (CNT) channels have been used as a catalyst for the direct conversion of syngas to light olefins.Compared with iron catalysts supported on other materials such as Silica-1,SBA-15 and carbon black,the CNT-confined catalyst exhibits a higher CO conversion and selectivity to the light olefins.This can be attributed to the CNT channels,which provide a unique confinement environment for iron particles.WANG ChuanFu PAN XiuLian BAO XinHe 2010Chinese Science Bulletin2010,55,12:8
5Enhanced hydrogen evolution reaction over molybdenum carbide nanoparticles confined inside single-walled carbon nanotubes显示文摘Carbon nanotubes(CNTs) have shown as unique nanoreactors to tune the catalytic activity of confined nano-catalysts. Here we report that the catalytic performance of molybdenum carbide nanoparticles(MoC_x NPs) for the hydrogen evolution reaction(HER) process can be enhanced by encapsulation within single-walled carbon nanotubes(SWNTs) with a diameter of 1–2 nm. The catalyst with MoC_x NPs located on the interior surface of SWNTs(MoCx@SWNTs) exhibits a lower onset over-potential and a smaller Tafel slope than the one with MoC_x NPs attached on the exterior surface(MoCx/SWNTs). This is likely attributed to the much smaller particle size and the more reduced states of the confined MoC_x NPs, as well as the larger specific surface area of MoCx@SWNTs compared with Mo Cx/SWNTs. In addition, the electronic structure of the confined MoC_x NPs might be modified by the confinement effects of SWNTs, and hence the adsorption free energy of H atoms on the confined MoC_x NPs, which could also contribute to their higher performance. These results suggest that the SWNTs can be further explored for constructing novel catalysts with beneficial catalytic performance.Tingting Cui Jinhu Dong Xiulian Pan Tie Yu Qiang Fu Xinhe Bao 2019Journal of Energy Chemistry2019,28,1:7
6Selective conversion of syngas to propane over ZnCrO_x-SSZ-39 OX-ZEO catalysts显示文摘Oxide-Zeolite(OX-ZEO) bifunctional catalyst design concept has been exemplified in several processes to direct conversion syngas to value-added chemicals and fuels such as mixed light olefins, ethylene, aromatics and gasoline.Herein we demonstrate that the product can be steered toward liquefied petroleum gas(LPG) with a selectivity up to 89% in hydrocarbons especially propane selectivity reaching 80% at CO conversion of 63% using ZnCrOx-H-SSZ-39 catalyst.Interestingly, the quantity of the acid sites of SSZ-39 does not influence obviously the hydrocarbon distribution but the strength is crucial for selective formation of propane.This finding provides an alternative route of LPG synthesis from a variety of carbon resources via syngas.Gen Li Feng Jiao Dengyun Miao Yong Wang Xiulian Pan Toshiyuki Yokoi Xiangju Meng Feng-Shou Xiao Andrei-Nicolae Parvulescu Ulrich Müller Xinhe Bao 2019Journal of Energy Chemistry2019,28,9:6
7A silica-immobilized Pt^(2+) catalyst for the selective,aerobic oxidation of methane via an electron-transfer chain显示文摘2+, benzoquinone 和 NaNO 2 的联合形成电子转移链,它在 CF 32 导致甲烷的氧化 > COOH 水的答案。全面周转数字然而每在 120 ° C 的甲烷的小时(TOF ) 是 0.5 h −1, ,(23%) 仅仅大约四分之一在 CF 3 一种色情的扭摆舞 3 。到在有磅 2+ 种类的催化剂上的公司 2, 的甲烷的在氧化上在硅石底层上作为 ligand 经由 2,2 使 ′-bipyridyl 不能调动,清楚地被压抑。在一样的条件下面,到甲醇的变换统治,并且没有公司 2 被观察由于甲烷的在氧化上,是由同位素实验证实了。Zengjian An Xiulian Pan Xiumei Liu Xiuwen Han Xinhe Bao 2008Journal of Natural Gas Chemistry2008,17,2:3
8The effect of Al3+ coordination structure on the propane dehydrogenation activity of Pt/Ga/Al2O3 catalysts显示文摘The effect of the Al2O3 structure on the performance of Pt/Ga/Al2O3 catalysts is investigated for the direct dehydrogenation of propane. The study unveils that the structure of Al3+determines the bulk structure of catalysts, particularly a high content of coordinatively unsaturated Al3+sites(penta-coordinated Al3+,denoted as Al3+penta) could lead to a remarkably improved dehydrogenation activity of the catalyst. The bulk characterization reveals that the sufficient amount of Al3+pentain Al2O3 benefit the dispersion of Pt and Ga2O3 on the Al2O3 support. At the same time, TPR results reveal that the presence of Pt facilitates the reduction of Ga2O3, likely due to the hydrogen spillover between the well dispersed Pt and Ga2O3,which consequently enhances the synergistic function between Pt and Ga2O3 in the dehydrogenation of propane. Recyclability tests demonstrate that the dehydrogenation activity stabilizes after three cycles over the Pt/Ga/Al2O3 catalyst.Qinqin Yu Tie Yu Hongyu Chen Guangzong Fang Xiulian Pan Xinhe Bao 2020Journal of Energy Chemistry2020,29,2:3
9Facile filling of metal particles in small carbon nanotubes for catalysis显示文摘A versatile wet chemistry method is developed for filling of subnanometer sized metal particles in carbon nanotubes with a diameter smaller than 1.5 nm. As an example, we showed that a confined bi-component Pd-V catalyst exhibit a higher benzene hydroxylation activity compared with that within multi-walled carbon nanotubes.Hongbo Zhang Xiulian Pan Xinhe Bao 2013Journal of Energy Chemistry2013,22,2:3
10Gas-phase electrocatalytic reduction of carbon dioxide using electrolytic cell based on phosphoric acid-doped polybenzimidazole membrane显示文摘Carbon dioxide transformation to fuels or chemicals provides an attractive approach for its utilization as feedstock and its emission reduction.Herein, we report a gas-phase electrocatalytic reduction of CO_2 in an electrolytic cell, constructed using phosphoric acid-doped polybenzimidazole(PBI) membrane, which allowed operation at 170°C. Pt/C and Pt Mo/C with variable ratio of Pt/Mo were studied as the cathode catalysts. The results showed that Pt Mo/C catalysts significantly enhanced CO formation and inhibited CH_4 formation compared with Pt/C catalyst. Characterization by X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy revealed that most Mo species existed as MoO_3 in Pt Mo/C catalysts and the interaction between Pt and MoO_x was likely responsible for the enhanced CO formation rate although these bicomponent catalysts in general had a larger particle size than Pt/C catalyst.Dunfeng Gao Fan Cai Qinqin Xu Guoxiong Wang Xiulian Pan Xinhe Bao 2014Journal of Energy Chemistry2014,23,6:2
11Direct experimental detection of hydrogen radicals in non-oxidative methane catalytic reaction显示文摘Non-oxidative conversion of methane to olefins,aromatics and hydrogen(MTOAH) has been reported recently over metal single sites such as iron and platinum.The reaction was proposed to involve catalytic activation of methane followed by gas phase C-C coupling of methyl radicals.This study using H atom Rydberg Tagging time-of-flight technique provides direct experimental evidence for the formation of hydrogen radicals during MTOAH reaction over a catalytic quartz wall reactor containing embedded iron species(denoted as Fe-reactor).Fe-reactor gives 7.3% methane conversion at 1273 K with 41.2% selectivity toward C2(ethane,ethylene and acetylene) and 31.8% toward BTX(benzene,toluene and xylene),respectively.The enhancing effects of hydrogen radicals on overall MTOAH performance are validated by cofeeding hydrogen donor benzene,which provides an additional route of methane activation apart from catalytic activation.Jianqi Hao Pierre Schwach Lulu Li Xiaoguang Guo Junben Weng Hailei Zhang Hao Shen Guangzong Fang Xin Huang Xiulian Pan Chunlei Xiao Xueming Yang Xinhe Bao 2021Journal of Energy Chemistry2021,30,1:2
12Selectivity modulation in the consecutive hydrogenation of benzaldehyde via functionalization of carbon nanotubes显示文摘Hydrogenation of benzaldehyde is a typical consecutive reaction,since the intermediate benzyl alcohol is apt to be further hydrogenated.Here we demonstrate that the selectivity of benzyl alcohol can be tuned via functionalization of carbon nanotubes(CNTs),which are used as the support of Pd.With the original CNTs,the selectivity of benzyl alcohol is 88% at a 100% conversion of benzaldehyde.With introduction of oxygen-containing groups onto CNTs,it drops to 27%.In contrast,doping CNTs with N atoms,the selectivity reaches 96% under the same reaction conditions.The kinetic study shows that hydrogenation of benzyl alcohol is significantly suppressed,which can be attributed to weakened adsorption of benzyl alcohol.This is most likely related to the modified electronic structure of Pd species via interaction with functionalized CNTs,as shown by XPS characterization.Yonghua Zhou Jing Liu Xingyun Li Xiulian Pan Xinhe Bao 2012Journal of Natural Gas Chemistry2012,21,3:2
13A versatile method for the encapsulation of various non-precious metal nanoparticles inside single-walled carbon nanotubes显示文摘Tingting Cui Xiulian Pan Jinhu Dong Shu Miao Dengyun Miao Xinhe Bao 2018Nano Research2018,11,6:2
14Modulation of the textures and chemical nature of C–SiC as the support of Pd for liquid phase hydrogenation显示文摘Xingyun Li Xiulian Pan Yonghua Zhou Xinhe Bao 2013Carbon2013,,:1
15Enhanced ethanol production inside carbon-nanotube reactors containing catalytic particles显示文摘PAN Xiulian BAO Xinhe 2007Natural Material2007,35,:1
16显示文摘Chen Wei Pan Xiulian Bao Xinhe 2007Journal Of The Ameri can Chemical Society2007,129,23:1
17Catalytic conversion of syngas into C2 oxygenates over Rh-based catalysts effect of carbon supports显示文摘FAN Zhongli CHEN Wei PAN Xiulian 2009Catalysis Today2009,147,:1
18Enhanced ethanol production inside carbon-nanotube reactors containing catalytic particles 显示文摘XiuLian Pan Zhongli Fan Wei Chen 2007Nature2007,11,:1
19Reactions over catalysts confined in carbon nanotubes显示文摘Pan Xiulian Bao Xinhe 2009Chemical Communications2009,,47:1
20Synthesis of spinel MgAl2O4 as a good catalyst support for partial oxidation of methane to syngas显示文摘Pan Xiulian Liu Shenglin Sheng Shishan 1999Chinese Journal of Catalysis1999,20,1:1
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