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| 1 | Preparation of modified Ce-SAPO-34 catalysts and their catalytic performances of methanol to olefins显示文摘The modified Ce-SAPO-34 catalysts were prepared with three methods, i.e., the liquid ion exchange with air calcination, impregnation with air calcination and impregnation with steam calcination methods. The catalytic performances of the catalysts for methanol to olefins were investigated. The properties of the catalysts were characterized using XRD, BET, XRF, FT-IR and NH3-TPD. The results indicated that compared to the SAPO-34 catalyst the catalyst prepared with the impregnation and air calcination prolonged the lifetime by 40 min and improved the selectivity to ethylene by 5% (mol) and the catalyst prepared with the impregnation and steam calcination showed the best modification effect, prolonging the lifetime by 70 min and improving the ethylene selectivity by 10% (mol). The catalyst prepared with the liquid ion exchange showed similar behaviour as the SAPO-34 catalyst. It was verified that the porous structure and surface acidity of these catalysts determined their catalytic behaviors. | Shuxun Tian Shengfu Ji Dandan Lü Bingyang Bai Qi Sun | 2013 | Journal of Energy Chemistry2013，22，4： | 10 |
| 2 | Effect of Ni Loading and Ce_(x)Zr_(1-x)O_(2) Promoter on Ni-Based SBA-15 Catalysts for Steam Reforming of Methane显示文摘有象 10wt%Ni/10wt%CexZr1_x:O2/SBA-15 一样从 5wt%到 20wt% 的镍内容的一系列 Ni/SBA-15 催化剂(x=0, 0.5, 1 ) 被准备。催化剂的结构用 XR.D, TPR, TEM 和赌注技术被描绘。为甲烷改过的蒸气的催化剂的催化活在连续流动被评估微反应堆。结果显示了那 Ni/SBA-15 和 Ni/CexZr1_x; O2/SBA-15 催化剂在气压有好催化活。10wt%Ni/SBA-15 催化剂在 800 点展出了优秀稳定性 ?? 在 740 h 的溪流上的时间的 6 号元素碳的化学符号。在反应以后,碳沉积没在催化剂的表面上被形成。在那里存在一常规六角形我在 Ni/SBA-15 和 Ni/CexZr1_x 的酣睡的结构; O2/SBA-15 催化剂。镍种类和 CexZr1_x; O2 部件都在 SBA-15 中央毛孔被限制。CexZr1_x; O2 能在 Ni/CexZr1_x 支持镍种类的分散; O2/SBA-15 催化剂。给词调音:基于 Ni 的催化剂;SBA-15;甲烷;冒热气改过; | Huijun Wan Xiujin Li Shengfu Ji Bingyao Huang Kai Wang Chengyue Li | 2007 | Journal of Natural Gas Chemistry2007，16，2： | 6 |
| 3 | Preparation of phosphorus-modified PITQ-13 catalysts and their performance in 1-butene catalytic cracking显示文摘A series of phosphorus-modified PITQ-13 catalysts was prepared by wet impregnation of NH4H2PO4solution into an HITQ-13 parent. The catalysts were characterized using XRD, N2adsorption, MAS NMR and NH3-TPD. Their catalytic performance in 1-butene catalytic cracking was evaluated in a fixed fluidized bed reactor. The results showed that the crystallinity, surface area and pore volume of P-modified PITQ-13catalysts decreased with the increasing amounts of P. The number of weak acid sites increased, whereas that of strong acidity decreased. The selectivity to propylene in 1-butene cracking reactions increased because of the decrease in strong acidity. The yield of propylene achieved41.6% over PITQ-13-2 catalyst with a P content of 1.0 wt%, which was 5.1% greater than that achieved over HITQ-13 catalyst. | Penghui Zeng Yun Liang Shengfu Ji Baojian Shen Honghai Liu Baojie Wang Hongjuan Zhao Mingfu Li | 2014 | Journal of Energy Chemistry2014，23，2： | 6 |
| 4 | Comparative study of fluidized-bed and fixed-bed reactor for syngas methanation over Ni-W/TiO_2-SiO_2 catalyst显示文摘In this work,syngas methanation over Ni-W/TiO2-SiO2catalyst was studied in a fluidized-bed reactor(FBR)and its performance was compared with a fixed-bed reactor(FIXBR).The effects of main operating variables including feedstock gases space velocity,coke content,bed temperature and sulfur-tolerant stability of 100 h life were investigated.The structure of the catalysts was characterized by XRD,N2adsorptiondesorption and TEM.It is found that under same space velocity from 5000 h 1to 25000 h 1FBR gave a higher CH4yield,lower coke content,and lower bed temperature than those obtained in FIXBR.Ni-W/TiO2-SiO2catalyst possessed excellent sulfur-tolerant stability on the feedstock gases less than 500 ppm H2S in FBR.The carbon deposits formed on the spent catalyst were in the form of carbon fibers in FBR,while in the form of dense accumulation distribution appearance in FIXBR. | Bo Liu Shengfu Ji | 2013 | Journal of Energy Chemistry2013，22，5： | 6 |
| 5 | Magnetically recyclable Pd/γ-AlOOH@Fe_3O_4 catalysts and their catalytic performance for the Heck coupling reaction显示文摘Novel magnetically recyclable Pd/γ-AlOOH@Fe3O4 catalysts were prepared using γ-AlOOH@Fe3O4 as a magnetic supporter and nano-Pd particles as the active catalytic component.The structure of the catalysts was characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM),N2 adsorption-desorption,and a vibration sample magnetometer(VSM).The catalytic activity and recyclability for the Heck coupling reaction were investigated.Results showed that the magnetic γ-AlOOH@Fe3O4 possessed a core-shell structure,as well as that the nano-Pd particles were 6–8 nm and had been well dispersed in the γ-AlOOH shell.In the Heck coupling reactions,the magnetic Pd/γ-AlOOH@Fe3O4 catalysts exhibited good catalytic activity and recyclability.For the(0.021 mol%)Pd/γ-AlOOH@Fe3O4 catalyst,the bromobenzene conversion and product yield reached about 100%and 96.3%,respectively,under a 120°C reaction temperature and 12 h reaction time.After being recycled 8 times,the conversion of bromobenzene and the recovery of the catalyst were about 90%and 93%,respectively.The nano-Pd particles were kept well dispersed in the used Pd/γ-AlOOH@Fe3O4 catalyst. | YANG Hao JI ShengFu LIU XueFei ZHANG DanNi SHI Da | 2014 | Science China Chemistry2014，57，6： | 5 |
| 6 | Effect of Cu promoter on Ni-based SBA-15 catalysts for partial oxidation of methane to syngas显示文摘A series of Ni/SBA-15 catalysts with 5wt% to 15wt% Ni content as well as a series of 12.5%Ni/Cu/SBA-15 catalysts with 1% to 10% copper content were prepared by the impregnation method. The catalytic performance for partial oxidation of methane was investigated in a continuous flow microreactor under atmospheric pressure. The textural and chemical properties of the catalysts were characterized by XRD,TEM,BET and H 2-TPR techniques. The results indicated that the catalysts modified with Cu promoter showed better performance than those without modification. For the 12.5%Ni/2.5%/Cu/SBA-15 catalyst,at 850 C the conversion of CH 4 reached 97.9% and the selectivity of CO and H 2 reached 98.0% and 96.0%,respectively. In XRD patterns of the Ni/Cu/SBA-15 catalyst with 7.5 to 10% Cu contents there were CuO characteristic peaks beside NiO characteristic peaks. The mesoporous structure of SBA-15 was retained in all of the catalysts. TPR analysis of the catalysts revealed that a strong interaction between Ni,Cu promoter and SBA-15 support may be existed. This interaction enhanced significantly the redox properties of the catalysts resulting in the higher catalytic activity. | Fabien Habimana Xiujin Li Shengfu Ji Bao Lang Daoan Sun Chengyue Li | 2009 | Journal of Natural Gas Chemistry2009，18，4： | 4 |
| 7 | Effect of MgO promoter on Ni-based SBA-15 catalysts for combined steam and carbon dioxide reforming of methane显示文摘A series of Ni/SBA-15 catalysts with Ni contents ranging from 5 wt% to 15 wt%, as well as another series of 10%Ni/MgO/SBA-15 catalysts, in which the range of the MgO content was from 1 wt% to 7 wt%, were prepared, and their catalytic performances for the reaction of combined steam and carbon dioxide reforming of methane were investigated in a continuous flow microreactor. The structures of the catalysts were characterized using the XRD, H2-TPR and CO2-TPD techniques. The results indicated that the CO selectivity for this reaction was very close to 100%, and the H2/CO ratio of the product gas could be controlled by changing the H2O/CO2 molar ratio of the feed gas. The simultaneous and plentiful existing of steam and CO2 had a significant influence on the catalytic performance of the 10%Ni/SBA-15 catalyst without modification. After reacting at 850 °C for 120 h over this catalyst, the CH4 conversion dropped from 98% to 85%, and the CO2 conversion decreased from 86% to 53%. However, the 10%Ni/3%MgO/SBA-15 catalyst exhibited a much better catalytic performance, and after reacting for 620 h, the CO2 conversion over this catalyst dropped from 92% to around 77%, while the CH4 conversion was not decreased. Oxidation of the Ni0 species as well as carbon deposition during the reaction were the main reasons for the deactivation of the catalyst without modification. On the other hand, modification by the MgO promoter improved the dispersion of the Ni0 species, and enhanced the CO2 adsorption affinity which in turn depressed the occurring of carbon deposition, and thus retarded the deactivation process. | Bingyao Huang Xiujin Li Shengfu Ji Bao Lang Fabien Habimana Chengyue Li | 2008 | Journal of Natural Gas Chemistry2008，17，3： | 3 |
| 8 | Particle/metal-based monolithic catalysts dual-bed reactor with beds-interspace supplementary oxygen:Construction and performance for oxidative coupling of methane显示文摘A novel particle/metal-based monolithic catalysts dual-bed reactor with beds-interspace supplementary oxygen is constructed comprising of the upper-layer 5wt%Na2WO4-2wt%Mn/SiO2 particle catalyst and the under-layer 3 wt%Ce-5 wt%Na2WO4-2 wt%Mn/SBA-15/Al2O3 /FeCrAl metal-based monolithic catalyst as well as a side tube in the interspaces of two layers for supplementing O2.The reaction performance of oxidative coupling of methane(OCM) in the dual-bed reactor system is evaluated.The effects of the reaction parameters such as feed CH 4 /O 2 ratio,reaction temperature and side tube feed O2 flowrate on the catalytic performance are investigated.The results indicate that the suggested mode of dual-bed reactor exhibits an excellent performance for OCM.CH4 conversion of 33.2%,C2H4 selectivity of 46.5% and C2 yield of 22.5% could be obtained,which have been increased by 6.4%,4.1% and 5.5%,respectively,as compared with 5 wt%Na2WO4-2 wt%Mn/SiO2 particle catalyst in a single-bed reactor and increased by 10.7%,31.9% and 17.7%,respectively,as compared with 3 wt%Ce-5 wt%Na2WO4-2 wt%Mn/SBA-15/Al2O3 /FeCrAl metal-based monolithic catalyst in a single-bed reactor.The effective promotion of OCM performance in the reactor would supply a valuable reference for the industrialization of OCM process. | Wenhua Wang Zhao Zhang Shengfu Ji | 2012 | Journal of Natural Gas Chemistry2012，21，4： | 3 |
| 9 | Synthesis of mesoporous γ-AlOOH@Fe_3O_4 magnetic nanomicrospheres显示文摘Mesoporous γ-AlOOH@Fe3O4 magnetic nanomicrospheres were synthesized using superparamagnetic Fe3O4 nanoparticles as the core and aluminum isopropoxide(AIP) as the aluminum source.The obtained magnetic nanomicrospheres were characterized by X-ray powder diffraction(XRD),transmission electron microscopy(TEM),scanning electron microscopy(SEM),N2 adsorption-desorption and vibrating sample magnetometry(VSM).The effects of preparation parameters such as hydrolysis time of AIP,concentration of AIP and coating layer number on microspheres were investigated.The results indicated that the mesoporous γ-AlOOH@Fe3O4 magnetic nanomicrospheres consisted of a mesoporous-AlOOH shell and a Fe3O4 magnetic core.The diameter of γ-AlOOH@Fe3O4 nanomicrospheres was about 200 nm,the thickness of mesoporous-AlOOH shell was about 5 nm and the average pore size was 3.8 nm.The thickness of the mesoporous-AlOOH shell could be controlled via layer-by-layer coating times.The formation mechanism of the mesoporous-AlOOH shell involved a 'chemisorption-hydrolysis' process. | Yuanyuan Zheng Shengfu Ji Hongfei Liu Ming Li Hao Yang | 2012 | Particuology2012，10，6： | 3 |
| 10 | Hydrogen generation from methanolysis of sodium borohydride over Co/Al_2O_3 catalyst显示文摘Co/Al2O3 catalyst is prepared with an impregnation-chemical reduction method and used to catalyze the methanolysis of sodium borohydride (NaBH 4) for hydrogen generation.At solution temperature of 0 C,the methanolysis reaction can be effectively accelerated using Co/Al2O3 catalyst and provide a desirable hydrogen generation rate,which makes it suitable for applications under the circumstance of low environmental temperature.The byproduct of methanolysis reaction is analyzed by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR).The characterization results indicate that methanol can be easily recovered after methanolysis reaction by hydrolysis of the methanolysis byproduct,NaB(OCH 3) 4.The catalytic activity of Co/Al2O3 towards NaBH 4 methanolysis can be further improved by appropriate calcination treatment.The catalytic methanolysis kinetics and catalyst reusability are also studied over the Co/Al2O3 catalyst calcined at the optimized temperature. | Dongyan Xu Lin Zhao Ping Dai Shengfu Ji | 2012 | Journal of Natural Gas Chemistry2012，21，5： | 3 |
| 11 | Research on data diagnosis method of acoustic array sensor device based on spectrogram显示文摘Acoustic array sensor device for partial discharge detection is widely used in power equipment inspection with the advantages of non-contact and precise positioning compared with partial discharge detection methods such as ultrasonic method and pulse current method.However,due to the sensitivity of the acoustic array sensor and the influence of the equipment operation site interference,the acoustic array sensor device for partial discharge type diagnosis by phase resolved partial discharge(PRPD)map might occasionally presents incorrect results,thus affecting the power equipment operation and maintenance strategy.The acoustic array sensor detection device for power equipment developed in this paper applies the array design model of equal-area multi-arm spiral with machine learning fast fourier transform clean(FFT-CLEAN)sound source localization identification algorithm to avoid the interference factors in the noise acquisition system using a single microphone and conventional beam forming algorithm,improves the spatial resolution of the acoustic array sensor device,and proposes an acoustic array sensor device based on the acoustic spectrogram.The analysis and diagnosis method of discharge type of acoustic array sensor device can effectively reduce the system misjudgment caused by factors such as the resolution of the acoustic imaging device and the time domain pulse of the digital signal,and reduce the false alarm rate of the acoustic array sensor device.The proposed method is tested by selecting power cables as the object,and its effectiveness is proved by laboratory verification and field verification. | Xing Lei Hang Ji Qiang Xu Ting Ye Shengfu Zhang Chengjun Huang | 2022 | Global Energy Interconnection2022，5，4： | 2 |
| 12 | Metal-organic framework MIL-53(Al): synthesis, catalytic performance for the Friedel-Crafts acylation, and reaction mechanism显示文摘Metal-organic framework MIL-53(Al) was synthesized by a solvothermal method using aluminum nitrate as the aluminium source and 1,4-benzenedicarboxylic acid(H2BDC) as the organic ligand. The structure of samples was characterized by X-ray diffraction(XRD) and Fourier transform infrared spectroscopy(FT-IR). The catalytic activity and recyclability of MIL-53(Al) catalyst for the Friedel-Crafts acylation reaction of indole with benzoyl chloride were evaluated. The reaction conditions were optimized and a reaction mechanism was suggested. The results showed that the MIL-53(Al) catalyst exhibited good catalytic activity and recyclability for the Friedel-Crafts acylation reaction. When the molar ratio of indole and MIL-53(Al) catalyst was 1:0.06(n1:ncatalyst), the molar ratio of indole and benzoyl chloride was 1:3, and the solvent was dichloromethane, the conversion of indole could reach 97.1% and the selectivity of 3-acylindole could reach 81.1% at 25 °C after 8 h. The catalyst can be reused without significant degradation in catalytic activity. After the catalyst was reused five times, the conversion of indole was 87.6% and the selectivity of 3-acylindole was 79.5%. | Junlei Yan Sai Jiang Shengfu Ji Da Shi Hefei Cheng | 2015 | Science China Chemistry2015，58，10： | 2 |
| 13 | Promoting electrochemical conversion of CO2 to formate with rich oxygen vacancies in nanoporous tin oxides显示文摘Defect engineering,especially oxygen vacancies(O-vacancies) introduction into metal oxide materials has been proved to be an effective strategy to manipulate their surface electron exchange processes.However,quantitative investigation of O-vacancies on CO2 electroreduction still remains rather ambiguous.Herein,a series of nanoporous tin oxide(SnOx) materials have been prepared by thermal treatment at various temperatures and reaction conditions.The annealing temperature dependent Ovacancies property of the SnOx was revealed and attributed to the balance tunning of the desorption of oxygen species and the continous oxidation of SnOx.The as-prepared nanoporous SnOx with 300℃treatment was found to be highest O-vacant material and showed an impressive CO2 RR activity and selectivity towards the conversion of CO2 into formic acid(up to 88.6%),and superior HCOOH incomplete current density to other samples.The ideal performance of the O-vacancies rich SnOx-300 material can be ascribed to the high delocalized electron density inducing much enhanced adsorption of CO2 with O binding and benefiting the subsequent reduction with high selectively forming of formic acid. | Tengfei Gao Anuj Kumar Zhicheng Shang Xinxuan Duan Hangchao Wang Shiyuan Wang Shengfu Ji Dongpeng Yan Liang Luo Wen Liu Xiaoming Sun | 2019 | Chinese Chemical Letters2019，30，12： | 2 |
| 14 | Effect of O_2 and H_2O on the tri-reforming of the simulated biogas to syngas over Ni-based SBA-15 catalysts显示文摘A series of Ni/SBA-15 catalysts with Ni contents from 7.5 wt% to 15 wt% were prepared by impregnation method.The effect of O2 and H2O on the combined reforming of the simulated biogas to syngas was investigated in a continuous flow fixed-bed micro-reactor.The stability of the catalyst was tested at 800 ?C.The results indicated that 10wt%Ni/SBA-15 catalyst exhibited the highest catalytic activities for the combined reforming of the simulated biogas to syngas.Under the reaction conditions of the feed gas molar ratios CH4/CO2/O2/H2O = 2/1/0.6/0.6,GHSV = 24000 ml gc?a1t h?1 and the reaction temperature T = 800 ?C,the conversions of CH4 and CO2 were 92.8% and 76.3%,respectively,and the yields of CO and H2 were 99.0% and 82.0%,respectively.The catalytic activities of the catalyst did not decrease obviously after 100 h reaction time on stream. | Daoan Sun Xiujin Li Shengfu Ji Lingyan Cao | 2010 | Journal of Natural Gas Chemistry2010，19，4： | 2 |
| 15 | Synthesis of TiO2/SiO2@Fe3O4 Magnetic Microspheres and Their Properties of Photocatalytic Degradation Dyestuff显示文摘 | LIU Hongfei JIA Zhigang JI Shengfu | 2011 | Catalysis Today2011，175，1： | 1 |
| 16 | Highly active sites of NiVB nanoparticles dispersed onto graphene nanosheets towards efficient and pH-universal overall water splitting显示文摘Production of hydrogen(H2) and oxygen(O2) through electrocatalytic water splitting is one of the sustainable,green and pivotal ways to accomplish the ever-increasing demands for renewable energy sources,but remains a big challenge because of the uphill reaction during overall water splitting.Herein,we develop high-performance non-noble metal electrocatalysts for pH-universal water splitting,based on nickel/vanadium boride(NiVB) nanoparticles/reduced graphene oxide(rGO) hybrid(NiVB/rGO)through a facile chemical reduction approach under ambient condition.By virtue of more exposure to surface active sites,superior electron transfer capability and strong electronic coupling,the asprepared NiVB/rGO heterostructure needs pretty low overpotentials of 267 and 151 mV to deliver a current density of 10 mA cm^(-2) for oxygen evolution reaction(OER) and hydrogen evolution reaction(HER)respectively,with the corresponding Tafel slope of 44 and 88 mV dec^(-1) in 1.0 M KOH.Moreover,the NiVB/rGO electrocatalysts display a promising performance in a wide-pH conditions that require low overpotential of 310,353 and 489 mV to drive a current density of 10 mA cm^(-2) for OER under 0.5 M KOH,0.05 M H2SO4 and 1.0 M phosphate buffer solution(PBS) respectively,confirming the excellent electrocata lytic performance among state-of-the-art Ni-based electrocatalysts for overall water splitting.Therefore,the interfacial tuning based on incorporation of active heterostructure may pave a new route to develop bifunctional,cost-effective and efficient electrocatalyst systems for water splitting and H2 production. | Muhammad Arif Ghulam Yasin Muhammad Shakeel Muhammad Asim Mushtaq Wen Ye Xiaoyu Fang Shengfu Ji Dongpeng Yan | 2021 | Journal of Energy Chemistry2021，30，7： | 1 |
| 17 | Preparation, characterization and hydrodesulfurization performances of Co-Ni_2P/SBA-15 catalysts显示文摘A series of Co-Ni2P/SBA-15 catalysts with various Co contents, Ni2P contents and P/Ni molar ratios were prepared by impregnating nickel nitrate, diammonium hydrogen phosphate, and then cobalt nitrate into SBA-15 support followed by temperature-programmed reduction in a H2 flow. The catalyst structure was characterized by X-ray diffraction(XRD), high resolution-transmission electron microscopy(HR-TEM)and N2adsorption-desorption techniques and their catalytic performance of the hydrodesulfurization(HDS) of dibenzothiophene(DBT) was evaluated. The effects of Co contents, Ni2 P contents and P/Ni molar ratios on the catalyst structure and HDS of DBT over the Co-Ni2P/SBA-15 catalyst were investigated. The results indicated that the mesoporous structure was mainly maintained and the nickel phosphides were well dispersed in all of the characterized catalysts. The 4Co-25Ni2P/SBA-15(P/Ni = 0.8) catalyst with the Co and Ni2 P contents of 4 wt% and25 wt%, respectively, and the P/Ni molar ratio of 0.8 showed the highest catalytic performance for HDS of DBT. Under the reaction conditions of 380?C and 3.0 MPa, the DBT conversion can reach 99.62%. The HDS of DBT proceeded mainly via the direct desulfurization(DDS)pathway with biphenyl(BP) as the dominant product on all of the catalysts and the BP selectivity was slightly enhanced after the introduction of Co promoters. | Zhou-jun Wang Pingyi Wu Ling Lan Kunhong Liu Yaqiong Hu Shengfu Ji | 2015 | Journal of Energy Chemistry2015，24，2： | 1 |
| 18 | Modified solvothermal synthesis of magnetic microspheres with multifunctional surfactant cetyltrimethyl ammonium bromide and directly coated mesoporous shell显示文摘 | Hongfei Liu Shengfu Ji Yuanyuan Zheng Ming Li Hao Yang | 2013 | Powder Technology2013，，： | 1 |
| 19 | Synthesis of TiO2/SiO2 @Fea 04 magnetic microspheres and their properties of photocatalytic degradation dyestuff显示文摘 | LIU Hongfei JIA Zhigang JI Shengfu | 2011 | Catalysis Today2011，175，1： | 1 |
| 20 | Autothermal oxi- dative coupling of methane on the SrCOJSm203 catalysts显示文摘 | Wang Kai Ji Shengfu Shi Xuejun | 2009 | Catalysis Communications2009，10，6： | 1 |
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