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Establishing two-stage interaction between fly ash and NaOH by X-ray and infrared analyses

Bhagwanjee JHA,Nevin KOSHY,Devendra Narain SINGH

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 216-221 doi: 10.1007/s11783-014-0630-8

Abstract: explored by several researchers and formation of fly ash zeolites has been confirmed based on the X-ray diffraction

Keywords： hydrothermal treatment     alkali activation     fly ash zeolites     X-ray diffraction (XRD) and Fourier transform-infrared    

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β-Nickel hydroxide cathode material for nano-suspension redox flow batteries

Yue LI, Cheng HE, Elena V. TIMOFEEVA, Yujia DING, Javier PARRONDO, Carlo SEGRE, Vijay RAMANI

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 401-409 doi: 10.1007/s11708-017-0496-0

Abstract: morphology of the nanoparticles were characterized by scanning electronic microscopy (SEM) and X-ray diffraction(XRD).The XRD patterns confirmed that β-Ni(OH) was successfully synthesized, while SEM results showed that

Keywords： nano-suspension flow battery     β-Ni(OH)2     scanning electronic microscopy (SEM)     X-ray diffraction(XRD)     X-ray adsorption near edge structure (XANES)     extended X-ray absorption fine structure (EXAFS)    

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Neutron Diffraction Investigation of the DyFe11Ti Magnetic Structure and Its Spin Reorientations Article

Olivier Isnard, Eder J. Kinast

Engineering 2020, Volume 6, Issue 2,   Pages 153-157 doi: 10.1016/j.eng.2019.11.009

Abstract: the magnetic structure of DyFe11Ti and its thermal evolution as probed by neutron powder diffraction

Keywords： Neutron diffraction     Magnetic phase diagram     Crystal structure    

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High-Throughput Powder Diffraction Using White X-Ray Beam and a Simulated Energy-Dispersive Array Detector Article

Xiaoping Wang, Weiwei Dong, Peng Zhang, Haoqi Tang, Lanting Zhang, Tieying Yang, Peng Liu, Hong Wang, X.-D. Xiang

Engineering 2022, Volume 10, Issue 3,   Pages 81-88 doi: 10.1016/j.eng.2021.05.023

Abstract:

High-throughput powder X-ray diffraction (XRD) with white X-ray beam and an energy-dispersive detectorThe resulting diffraction patterns show that the relative strength between different diffraction peaksfrom energy-dispersive XRD (EDXRD) spectra is consistent with that from angle-resolved XRD (ARXRD),XRF counts from all pixels are integrated directly by energy, while the diffraction spectra are integratedIn comparison with ARXRD, the diffraction signal generated by a white X-ray beam over monochromic light

Keywords： High-throughput experiment     White beam X-ray diffraction     Energy-dispersive array detector     Energy-dispersiveX-ray diffraction     Angle-resolved X-ray diffraction    

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Wave Interaction with a Partial Porous Double-Wall Cylinder

Teng Bin,Li Yucheng,Sun Lu

Strategic Study of CAE 2001, Volume 3, Issue 10,   Pages 41-47

Abstract:

A linear analytic solution is derived for wave interaetion with a combined cylinder with a solid interior column surrounded by a coaxial porous exterior column. The solution is established on an eigenfunction expansion of velocity potential and a linear model between the fluid velocity inside a porous wall and the pressure difference between two sides of the wall. Numerical experiments have been carried out to examine the wave force and wave run-up on combined porous cylinders with different porous coefficient, porous section, and ratio between the radii of the interior and exterior columns. It is found that the porous rate of the exterior wall and the size of the porous section have a significant influence on the wave run-up and wave loads on cylinders. Cylinders with whole porous section on the outer column are more suitable for reducing wave loads and wave run-up on cylinders.

Keywords： wave diffraction     wave force     wave run-up     porous structure     cylinder    

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Solvability and thermal response of cellulose with different crystal configurations

Qian CHEN, Kai ZHENG, Qingtao FAN, Kun WANG, Haiyan YANG, Jianxin JIANG, Shijie LIU

Frontiers of Engineering Management 2019, Volume 6, Issue 1,   Pages 62-69 doi: 10.1007/s42524-019-0001-z

Abstract:

Cellulose is a biodegradable and renewable natural material that it is naturally resistant to breaking and modification. Moreover, the crystalline structure of cellulose is a major factor restricting its industrial utilization. In this study, cellulose polymorphs were prepared from natural cellulose, and their solvability and thermal response were investigated. Using liquid- and solid-state NMR signals, the distinct types and dissolving states of cellulose polymorphs were identified. The thermal behavior of the polymorphic forms of cellulose-d was also evaluated, and cellulose II exhibited the poorest thermal stability and a unique exothermic reaction.

Keywords： cellulose     crystal structure     thermal response     XRD     CP/MAS 13C NMR    

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Application of digital holography to circle flow bed boiler measurement

PU Shiliang, WANG Qinghui, CEN Kefa, Denis Lebrun, REN Kuanfang

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 218-222 doi: 10.1007/s11708-007-0029-3

Abstract: laser was used to illuminate the particles inside the CFB through two glass windows and the in-line diffractionThe diffraction can be interpreted as a convolution between a family of wavelet functions and the objectthree-dimensional (3D) images of the particles in the two-phase flow were reconstructed by the convolution between diffraction

Keywords： HE-NE     function     convolution     two-phase     diffraction    

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Preparation and property of porous hydroxyapatite as an inorganic dispersant used in suspension polymerization

XU Kaqiu, XU Jiale, WANG Yuhong

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 49-54 doi: 10.1007/s11705-008-0004-5

Abstract: The samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and BET

Keywords： diffraction     stability     nitrogen adsorption     phosphoric     aqueous suspension    

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Crystal-to-crystal transformation from the triclinic to the cubic crystal system by partial desolvation

Qianqian Guo, Irmgard Kalf, Ulli Englert

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 433-439 doi: 10.1007/s11705-018-1743-6

Abstract:

Diffusion reaction of the labile building block Mg(acacCN)2 (acacCN= 3-cyanoacetylacetonate) with silver salts leads to a series of solvated Mg/Ag bimetallic coordination polymers with composition [Mg(acacCN)3Ag]·solvent. Despite their common stoichiometry, the topology of these polymers depends on the solvent of crystallization. The two-dimensional coordination compound [Mg(acacCN)3Ag]·4CHCl3 in space group P1‾ is obtained as platelet-shaped crystals from a mixture of methanol and chloroform. When kept in the reaction mixture, these thin plates within one week convert to isometric tetrahedral crystals of the 3D network [Mg(acacCN)3Ag]·2CHCl3 in the cubic space group P213. The transformation reaction proceeds via dissolution and recrystallization. The co-crystallized solvent molecules play an important role for stabilizing the target structure: They subtend Cl···Cl contacts and interact via non-classical C–H···O hydrogen bonds with the coordination framework. In the new cubic coordination network, both Mg(II) and Ag(I) adopt octahedral coordination, with unprecedented face-sharing by bridging O atoms of three acetylacetonato moieties. Prolonged standing of [Mg(acacCN)3Ag]·2CHCl3 in the reaction medium leads to further degradation, under formation of [Ag(acacCN)].

Keywords： ditopic ligand     substituted acetylacetone     desolvation     diffraction    

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Large-scale synthesis of isolated Mn2O3 nanotube/fiber with ferric nitrate as catalyst

ZHANG Aifei, LIU Jiping, L? Guangshu

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 55-58 doi: 10.1007/s11705-007-0011-y

Abstract: X-ray diffraction (XRD) result shows that the O nanotube has a crystalline structure different from o-O

Keywords： different     nickel     exterior diameter     nanotube     XRD    

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Synthesis and properties of polybenzazoles containing flexible methylene in backbone

XU Xiaohui, LIU Xiaoyun, ZHOU Chengjun, ZHUANG Qixin, HAN Zhewen

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 412-416 doi: 10.1007/s11705-008-0073-5

Abstract: The structures of polybenzazoles were characterized by means of FT-IR, H NMR and Wide-angle X-ray diffraction

Keywords： condensation     Wide-angle     absorption     excellent     diffraction    

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LiFePO/C cathode materials synthesized by co-precipitation and microwave heating

XU Yunlong, TAO Lili, MA Hongyan, HUANG Huaqing

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 422-427 doi: 10.1007/s11705-008-0082-4

Abstract: The samples were characterized by X-ray diffraction (XRD), TEM, particle-size analysis and constant current

Keywords： polyethylene     electrochemical performance     combination     co-precipitation     diffraction    

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Experiments on the effect of the pressure on the mineral transformation of coal ash under the different reaction atmosphere

Nijie JING, Qinhui WANG, Zhongyang LUO, Tao JIE, Xiaomin LI, Kefa CEN

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 394-399 doi: 10.1007/s11705-010-0505-x

Abstract: species on the ash fusibility with high-pressure thermogravimetric analysis (PTGA) apparatus and X-ray diffraction(XRD) analysis.Each specimen analyzed by XRD was observed for the mineral conversion and formation of new minerals with

Keywords： ash fusibility     XRD analysis     PTGA     low-temperature eutectic    

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Catalysis and deactivation of montmorillonite K10 in the aryl O -glycosylation of glycosyl trichloroacetoimidates

Xiaoliu LI, Xinhao YAN, Zhiwei LI, Hua CHEN, Pingzhu ZHANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 342-347 doi: 10.1007/s11705-009-0279-1

Abstract: The fresh and the deactivated catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron

Keywords： photoelectron spectroscopy     adsorption-desorption     glycosylation     deactivated     diffraction    

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Direct synthesis of diphenyl carbonate over heterogeneous catalyst: effects of structure of substituted perovskite carrier on the catalyst activities

WU Guangwen, JIN Fang, WU Yuxin, ZHANG Guangxu, LI Dinghuo, WANG Cunwen, MA Peisheng

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 59-64 doi: 10.1007/s11705-007-0012-x

Abstract: The phases were detected by X-ray diffraction.

Keywords： photoelectron spectroscopy     diphenyl carbonate     proportion     diffraction     perovskite    

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Title Author Date Type Operation

Establishing two-stage interaction between fly ash and NaOH by X-ray and infrared analyses

Bhagwanjee JHA,Nevin KOSHY,Devendra Narain SINGH

Journal Article

β-Nickel hydroxide cathode material for nano-suspension redox flow batteries

Yue LI, Cheng HE, Elena V. TIMOFEEVA, Yujia DING, Javier PARRONDO, Carlo SEGRE, Vijay RAMANI

Journal Article

Neutron Diffraction Investigation of the DyFe11Ti Magnetic Structure and Its Spin Reorientations

Olivier Isnard, Eder J. Kinast

Journal Article

High-Throughput Powder Diffraction Using White X-Ray Beam and a Simulated Energy-Dispersive Array Detector

Xiaoping Wang, Weiwei Dong, Peng Zhang, Haoqi Tang, Lanting Zhang, Tieying Yang, Peng Liu, Hong Wang, X.-D. Xiang

Journal Article

Wave Interaction with a Partial Porous Double-Wall Cylinder

Teng Bin,Li Yucheng,Sun Lu

Journal Article

Solvability and thermal response of cellulose with different crystal configurations

Qian CHEN, Kai ZHENG, Qingtao FAN, Kun WANG, Haiyan YANG, Jianxin JIANG, Shijie LIU

Journal Article

Application of digital holography to circle flow bed boiler measurement

PU Shiliang, WANG Qinghui, CEN Kefa, Denis Lebrun, REN Kuanfang

Journal Article

Preparation and property of porous hydroxyapatite as an inorganic dispersant used in suspension polymerization

XU Kaqiu, XU Jiale, WANG Yuhong

Journal Article

Crystal-to-crystal transformation from the triclinic to the cubic crystal system by partial desolvation

Qianqian Guo, Irmgard Kalf, Ulli Englert

Journal Article

Large-scale synthesis of isolated Mn2O3 nanotube/fiber with ferric nitrate as catalyst

ZHANG Aifei, LIU Jiping, L? Guangshu

Journal Article

Synthesis and properties of polybenzazoles containing flexible methylene in backbone

XU Xiaohui, LIU Xiaoyun, ZHOU Chengjun, ZHUANG Qixin, HAN Zhewen

Journal Article

LiFePO/C cathode materials synthesized by co-precipitation and microwave heating

XU Yunlong, TAO Lili, MA Hongyan, HUANG Huaqing

Journal Article

Experiments on the effect of the pressure on the mineral transformation of coal ash under the different reaction atmosphere

Nijie JING, Qinhui WANG, Zhongyang LUO, Tao JIE, Xiaomin LI, Kefa CEN

Journal Article

Catalysis and deactivation of montmorillonite K10 in the aryl O -glycosylation of glycosyl trichloroacetoimidates

Xiaoliu LI, Xinhao YAN, Zhiwei LI, Hua CHEN, Pingzhu ZHANG,

Journal Article

Direct synthesis of diphenyl carbonate over heterogeneous catalyst: effects of structure of substituted perovskite carrier on the catalyst activities

WU Guangwen, JIN Fang, WU Yuxin, ZHANG Guangxu, LI Dinghuo, WANG Cunwen, MA Peisheng

Journal Article