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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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Particle Size and Crystal Phase Effects in Fischer-Tropsch Catalysts

Jin-Xun Liu, Peng Wang, Wayne Xu, Emiel J. M. Hensen

Engineering 2017, Volume 3, Issue 4,   Pages 467-476 doi: 10.1016/J.ENG.2017.04.012

Abstract: correlated with the electronic and geometric structure of the nanoparticles, which depend on the particle size

Keywords： Fischer-Tropsch synthesis     Iron     cobalt and ruthenium carbides     Size effect     Crystal structure    

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Recent Developments in the Crystallization Process: Toward the Pharmaceutical Industry Review

Zhenguo Gao, Sohrab Rohani, Junbo Gong, Jingkang Wang

Engineering 2017, Volume 3, Issue 3,   Pages 343-353 doi: 10.1016/J.ENG.2017.03.022

Abstract: In this paper, we review recent developments in crystal engineering and crystallization process designco-crystals, polymorphs, and solvates, and include several milestones such as the launch of the first co-crystal

Keywords： Crystallization     Crystal engineering     Polymorphism     Crystallization process design and control     Crystal size    

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Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild conditions

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 6,   Pages 772-783 doi: 10.1007/s11705-022-2280-x

Abstract: Herein, a size-controlled TS-1 zeolite (TS-1#0.1ACh (acetylcholine)) was synthesized via steam-assistedcrystallization by introducing acetylcholine as a crystal growth modifier in the preparation process

Keywords： size-controlled TS-1     crystal modifier     steam-assisted crystallization     epoxidation    

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Effect of sodium ions in synthesis of titanium silicalite-1 on its catalytic performance for cyclohexanone ammoximation

Pengxu YAO,Yaquan WANG,Teng ZHANG,Shuhai WANG,Xiaoxue WU

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 149-155 doi: 10.1007/s11705-014-1409-y

Abstract: characterization results show that with the increase of Na concentration in the synthesis, both the crystal

Keywords： extra framework Ti     cyclohexanone ammoximation     titanium silicalite-1     sodium ion     crystal size    

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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 microelectronics

Keywords： brittle     soft     functional crystal     ultra-precision machining    

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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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Theoretical insights into influence of additives on sulfamethoxazole crystal growth kinetics and mechanisms

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1503-1515 doi: 10.1007/s11705-022-2294-4

Abstract: the initial chemical potential gradient, stirring speed, and polymer type on sulfamethoxazole (SMX) crystalTo investigate the influence of different conditions on the thermodynamic driving force of SMX crystalHowever, polyethylene glycol (PEG) promoted SMX crystal growth.In the system containing PEG 6000, crystal growth is dominated by the surface reaction.However, in the system containing PEG 20000, crystal growth is dominated by both the surface reaction

Keywords： insoluble drugs     polymer     inhibition crystallization     crystal growth kinetics     DFT calculations    

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The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1356-4

Abstract:

•Bacterial concentrations from eight stages were 104–105copies/m3.

Keywords： Size distribution     Airborne bacteria     Biological diversity     Human pathogenic bacteria     Composting plants    

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Novel casting processes for single-crystal turbine blades of superalloys

Dexin MA

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 3-16 doi: 10.1007/s11465-018-0475-0

Abstract:

This paper presents a brief review of the current casting techniques for single-crystal (SC) blades

Keywords： superalloy     investment casting     Bridgman process     directional solidification     single crystal     turbine blade    

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Polymorphism and crystal transformation of penicillin sulfoxide

Dingding JING, Yongli WANG, Zhijian CHEN, Lina ZHOU, Jingkang WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 442-447 doi: 10.1007/s11705-011-1140-x

Abstract: In this contribution, two crystal structures of penicillin sulfoxide (forms I and II) were determinedthat penicillin sulfoxide is more stable as form I, and the temperature plays an important role in the crystal

Keywords： penicillin sulfoxide     crystallization     polymorphism     crystal transformation     Raman spectroscopy    

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Biosorption and biotransformation of crystal violet by

Tao PAN, Suizhou REN, Jun GUO, Meiying XU, Guoping SUN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 185-190 doi: 10.1007/s11783-012-0435-6

Abstract: As a common triphenylmethane dye, crystal violet (CV) was chosen to test the decolorization characteristics

Keywords： crystal violet     decolorization     biosorption     biotransformation     Aeromonas hydrophila DN322p    

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Computer modeling of crystal growth of silicon for solar cells

Lijun LIU, Xin LIU, Zaoyang LI, Koichi KAKIMOTO

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 305-312 doi: 10.1007/s11708-011-0155-9

Abstract: A computer simulator with a global model of heat transfer during crystal growth of Si for solar cellsthree-dimensional (3D) global heat transfer model with 3D features is especially made suitable for any crystalA dynamic model for the melt-crystal (mc) interface is developed to predict the phase interface behaviorin a crystal growth process.findings show the importance of computer modeling as an effective tool in the analysis and improvement of crystal

Keywords： computer modeling     silicon     crystal growth     solar cells    

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Evaluation method of multiaxial low cycle fatigue life for cubic single crystal material

CHEN Jiping, DING Zhiping

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 278-282 doi: 10.1007/s11465-007-0048-0

Abstract: By taking account of the coupling effects, formulas of equivalent stress and strain for cubic single crystalOn the basis of the yield criterion and constitutive model of cubic single crystal materials, a subroutineLow cycle fatigue test data of the single crystal nickel-based superalloy are used to fit the differentThe equivalent stress and strain for a cubic single crystal material as failure parameters have the largestThe model was validated with LCF test data of CMSX-2 and DD3 single crystal nickel-based superalloys.

Keywords： orthotropic     regression analysis     crystal material     multiaxial     prediction    

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Title Author Date Type Operation

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

Particle Size and Crystal Phase Effects in Fischer-Tropsch Catalysts

Jin-Xun Liu, Peng Wang, Wayne Xu, Emiel J. M. Hensen

Journal Article

Recent Developments in the Crystallization Process: Toward the Pharmaceutical Industry

Zhenguo Gao, Sohrab Rohani, Junbo Gong, Jingkang Wang

Journal Article

Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild conditions

Journal Article

Effect of sodium ions in synthesis of titanium silicalite-1 on its catalytic performance for cyclohexanone ammoximation

Pengxu YAO,Yaquan WANG,Teng ZHANG,Shuhai WANG,Xiaoxue WU

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

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

Qianqian Guo, Irmgard Kalf, Ulli Englert

Journal Article

Theoretical insights into influence of additives on sulfamethoxazole crystal growth kinetics and mechanisms

Journal Article

The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

Journal Article

Novel casting processes for single-crystal turbine blades of superalloys

Dexin MA

Journal Article

Polymorphism and crystal transformation of penicillin sulfoxide

Dingding JING, Yongli WANG, Zhijian CHEN, Lina ZHOU, Jingkang WANG

Journal Article

Biosorption and biotransformation of crystal violet by

Tao PAN, Suizhou REN, Jun GUO, Meiying XU, Guoping SUN

Journal Article

Computer modeling of crystal growth of silicon for solar cells

Lijun LIU, Xin LIU, Zaoyang LI, Koichi KAKIMOTO

Journal Article

Evaluation method of multiaxial low cycle fatigue life for cubic single crystal material

CHEN Jiping, DING Zhiping

Journal Article