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Experimental study on high-efficiency polishing for potassium dihydrogen phosphate (KDP) crystal by using

Ziyuan LIU, Hang GAO, Dongming GUO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 294-302 doi: 10.1007/s11465-019-0576-4

Abstract: surface contamination and solve the inefficiency of previous water-dissolution polishing techniques for potassiumdihydrogen phosphate (KDP) crystal.The mechanism underlying TAWF polishing is analyzed, a special device is built to polish the KDP crystaland revolution rate remarkably reduce the life of the polishing pad and the surface quality of the KDPcrystal.

Keywords： potassium dihydrogen phosphate (KDP) crystal     controllable deliquescence     two-phase air–water fluid     high-efficiency    

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Influences of additives on the crystal habit of potassium chloride

Xiaofu GUO, Junsheng YUAN, Zhiyong JI, Min SU,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 78-81 doi: 10.1007/s11705-009-0300-8

Abstract: including lead chloride, cadmium chloride, sodium salicylate, and quaternary ammonium salt, on the crystalThe results show that the crystal habit of KCl is cube without additives, the crystal habit of KCl isellipsoid-like in the presence of Pb, the crystal habit of KCl is strip in the presence of Cd, and thecrystal habit of KCl is cavate cube in the presence of sodium salicylate.its crystal structure.

Keywords： cadmium chloride     salicylate     presence     crystallization     diffractometry analysis    

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Solvates and polymorphs of clindamycin phosphate: Structural, thermal stability and moisture stability

Junbo Gong, Dejiang Zhang, Yuanyuan Ran, Keke Zhang, Shichao Du

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 220-230 doi: 10.1007/s11705-017-1624-4

Abstract: Clindamycin phosphate (CP), an antibacterial agent, has been reported to form several solid-state formsThe crystal structures of two CP solvates, a dimethyl sulfoxide (DMSO) solvate and a methanol/water solvate(solvate V), have been determined by single crystal X-ray diffraction.properties and transformations of these forms were characterized by powder X-ray diffraction, Single-crystaldifferent hydrogen bonding networks exist among the host-host and host-solvent molecules in the two crystal

Keywords： clindamycin phosphate     solvate     crystal structure     thermal stability     moisture stability    

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Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 372-375 doi: 10.1007/s11705-010-0570-1

Abstract: The effect of potassium carbonate as additive on the composition and morphology of the product was investigatedAddition of potassium carbonate increased the yield of calcium carbide.The sample in the presence of potassium carbonate generated acetylene gas of 168.3 L/kg, which was 10%higher than that in the absence of potassium carbonate.This result confirmed the catalytic effect of potassium carbonate on the synthesis of calcium carbide

Keywords： calcium carbide     synthesis     catalysis    

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control and crack-free surface fabrication techniques for ultra-precision fly cutting of large-aperture KDP

F. H. ZHANG, S. F. WANG, C. H. AN, J. WANG, Q. XU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2,   Pages 193-202 doi: 10.1007/s11465-017-0448-8

Abstract:

Large-aperture potassium dihydrogen phosphate (KDP) crystals are widely used in the laser path ofThe most common method of manufacturing half-meter KDP crystals is ultra-precision fly cutting.When processing KDP crystals by ultra-precision fly cutting, the dynamic characteristics of the fly cuttingThese machining errors should be suppressed effectively to guarantee that KDP crystals meet the full-bandIn this study, the anisotropic machinability of KDP crystals and the causes of typical surface errors

Keywords： ultra-precision fly cutting     large-aperture KDP crystals     spatial frequency     processing error    

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Enhanced adsorption of phosphate by loading nanosized ferric oxyhydroxide on anion resin

Jing REN,Nan LI,Lin ZHAO,Nanqi REN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 531-538 doi: 10.1007/s11783-014-0629-1

Abstract: prepared by loading nanosized ferric oxyhydroxide (FO) on anion exchanger resin for the removal of phosphateBatch adsorption experiments revealed that higher temperature (313K), higher initial phosphate concentration(50 mg·L ) and lower solution pH (pH value of 2) would be more propitious to phosphate adsorption.Competition effect of coexisting anions on phosphate removal can be concluded as sulfate>nitrate>chlorideFreundlich isotherm model can describe the adsorption of phosphate on FOAE more accurately, which indicated

Keywords： phosphate removal     adsorption     nanosized ferric oxyhydroxide     anion exchanger    

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Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix

Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 256-264 doi: 10.1007/s11465-019-0573-7

Abstract: A ferroelectric liquid crystal polarization rotator (FLCPR) has been widely used in polarization measurementmodulation performance of FLCPR directly affects the measurement accuracy of the instrument based on liquid crystal

Keywords： ferroelectric liquid crystal polarization rotator (FLCPR)     dual liquid crystal Mueller matrix polarizer    

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Research progress on ultra-precision machining technologies for soft-brittle crystal materials

Hang GAO,Xu WANG,Dongming GUO,Yuchuan CHEN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 77-88 doi: 10.1007/s11465-017-0411-8

Abstract:

Soft-brittle crystal materials are widely used in many fields, especially optics and microelectronicsapplications for soft-brittle crystals are introduced by using some representative materials (e.g., potassiumdihydrogen phosphate (KDP), cadmium zinc telluride (CZT)) as examples.

Keywords： brittle     soft     functional crystal     ultra-precision machining    

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A potentiometric cobalt-based phosphate sensor based on screen-printing technology

Lei ZHU,Xiaohong ZHOU,Hanchang SHI

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 945-951 doi: 10.1007/s11783-013-0615-z

Abstract: The cobalt-based phosphate sensor showed a phosphate-selective potential response in the range of 10DO and pH were found to interfere with sensor responses to phosphate.sensitivity, and stability, which are comparable with conventional bulk Co-wire sensors, the proposed phosphate

Keywords： phosphate     cobalt     screen-printing technology     electroplate     wastewater    

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Development of ASCP for Ammonium Phosphate Technology and Five Projects of Phosphate Fertilizer in China

Zhong Benhe

Strategic Study of CAE 2004, Volume 6, Issue 6,   Pages 22-25

Abstract:

The production of ammonium phosphate by “ammoniated slurry concentrating process”（ASCPbeen built with a total capacity of 2.79×106 t/a, which is 60% of the total ammonium phosphateRecently, a technique for ammonium phosphate production combining both ASCP and the imported PACP hasThe new process with independent property right has been adopted in the five updating projects of phosphate

Keywords： phosphate fertilizer     ammonium phosphate     ammonium phosphate by ASCP    

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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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A space power system of free piston Stirling generator based on potassium heat pipe

Mingqiang LIN, Jian MOU, Chunyun CHI, Guotong HONG, Panhe GE, Gu HU

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 1-10 doi: 10.1007/s11708-019-0655-6

Abstract: The power system of a free piston Stirling generator (FPSG) based on potassium heat pipes has been developedBesides, the power system integrated with four FPSGs and potassium heat pipes was performed and the single

Keywords： free piston Stirling generator (FPSG)     potassium heat pipe     power system     energy conversion    

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Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 780-789 doi: 10.1007/s11705-018-1733-8

Abstract: The effect of the crystal size on the catalytic cracking of -heptane was investigated and the ThieleThe crystal size affected the textual properties of the catalysts but not the acidic properties of the

Keywords： hierarchical ZSM-5     crystal size     catalytic cracking     Thiele modulus     effectiveness factor    

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Effect of adding a smart potassium ion-responsive copolymer into polysulfone support membrane on the

Meibo He, Zhuang Liu, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 400-414 doi: 10.1007/s11705-018-1757-0

Abstract: Thin-film composite (TFC) nanofiltration (NF) membranes were fabricated via the interfacial polymerization of piperazine (PIP) and 1,3,5-benzenetricarbonyl trichloride on polysulfone (PSf) support membranes blended with K -responsive poly( -isopropylacryamide-co-acryloylamidobenzo-15-crown-5) (P(NIPAM-co-AAB C )). Membranes were characterized by attenuated total reflection Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, atomic force microscope, scanning electron microscope, contact angle, and filtration tests. The results showed that: (1) Under K -free conditions, the blended P(NIPAM-co-AAB C )/PSf supports had porous and hydrophilic surfaces, thereby producing NF membranes with smooth surfaces and low MgSO rejections; (2) With K in the PIP solution, the surface roughness and water permeability of the resultant NF membrane were increased due to the K -induced transition of low-content P(NIPAM-co-AAB C ) from hydrophilic to hydrophobic; (3) After a curing treatment at 95 °C, the improved NF membrane achieved an even higher pure water permeability of 10.97 L·m ·h ·bar under 200 psi. Overall, this study provides a novel method to improve the performance of NF membranes and helps understand the influence of supports on TFC membranes.

Keywords： nanofiltration     interfacial polymerization     support membrane     potassium ion-responsive     thin-film composite    

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Thermogravimetric coupled with Fourier transform infrared analysis study on thermal treatment of monopotassium phosphate

Yuheng FENG, Xuguang JIANG, Yong CHI, Xiaodong LI, Hongmei ZHU

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 186-192 doi: 10.1007/s11783-011-0322-6

Abstract: The pyrolysis and combustion characteristics of a residue from producing monopotassium phosphate (monopotassiumphosphate residue), considered as a hazardous waste, were studied using a thermogravimetric, coupled

Keywords： pyrolysis     thermogravimetric coupled with Fourier transform infrared analysis (TG-FTIR)     monopotassium phosphate    

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Title Author Date Type Operation

Experimental study on high-efficiency polishing for potassium dihydrogen phosphate (KDP) crystal by using

Ziyuan LIU, Hang GAO, Dongming GUO

Journal Article

Influences of additives on the crystal habit of potassium chloride

Xiaofu GUO, Junsheng YUAN, Zhiyong JI, Min SU,

Journal Article

Solvates and polymorphs of clindamycin phosphate: Structural, thermal stability and moisture stability

Junbo Gong, Dejiang Zhang, Yuanyuan Ran, Keke Zhang, Shichao Du

Journal Article

Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Journal Article

control and crack-free surface fabrication techniques for ultra-precision fly cutting of large-aperture KDP

F. H. ZHANG, S. F. WANG, C. H. AN, J. WANG, Q. XU

Journal Article

Enhanced adsorption of phosphate by loading nanosized ferric oxyhydroxide on anion resin

Jing REN,Nan LI,Lin ZHAO,Nanqi REN

Journal Article

Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix

Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU

Journal Article

Research progress on ultra-precision machining technologies for soft-brittle crystal materials

Hang GAO,Xu WANG,Dongming GUO,Yuchuan CHEN

Journal Article

A potentiometric cobalt-based phosphate sensor based on screen-printing technology

Lei ZHU,Xiaohong ZHOU,Hanchang SHI

Journal Article

Development of ASCP for Ammonium Phosphate Technology and Five Projects of Phosphate Fertilizer in China

Zhong Benhe

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

A space power system of free piston Stirling generator based on potassium heat pipe

Mingqiang LIN, Jian MOU, Chunyun CHI, Guotong HONG, Panhe GE, Gu HU

Journal Article

Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Journal Article

Effect of adding a smart potassium ion-responsive copolymer into polysulfone support membrane on the

Meibo He, Zhuang Liu, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Journal Article

Thermogravimetric coupled with Fourier transform infrared analysis study on thermal treatment of monopotassium phosphate

Yuheng FENG, Xuguang JIANG, Yong CHI, Xiaodong LI, Hongmei ZHU

Journal Article