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Technology for the preparation and application of cermet coatings and claddings in thermal power plants

Zongde LIU, Miao LIU, Liping ZHAO

Frontiers in Energy 2011, Volume 5, Issue 3, Pages 257-262 doi: 10.1007/s11708-010-0129-3

Abstract: Next, the paper summarizes the development of preparation technology for cermets and cermet coatingsapplication and development of submicron-grain cermet coatings and claddings through reaction synthesis technology

Keywords： cermets cermet coatings/claddings electro-thermal explosion spraying reaction synthesis

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Edge preparation methods for cutting tools: a review

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0766-y

Abstract: Edge preparation can remove cutting edge defects, such as burrs, chippings, and grinding marks, generatedVarious edge preparation methods have been proposed for different tool matrix materials, geometries,This study presents a scientific and systematic review of the development of tool edge preparation technologyThen, edge preparation methods for cutting tools, in which materials at the cutting edge area are removedFinally, the future development direction of tool edge preparation technology is prospected.

Keywords： edge preparation method preparation principle cutting edge geometry edge characterization tool performance

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Research of the Preparation Technology for Zr₆₆Al₉Cu₁₆Ni₉

Ruan Xuping,Ruan Hongwei

Strategic Study of CAE 2004, Volume 6, Issue 5, Pages 76-78

Abstract:

The paper introduced the preparation technology for bulk amorphous alloys.The crystalloids of the samples were analyzed by using X - ray diffraction technology.

Keywords： bulk amorphous alloy preparation technology glass fused salt vacuum degree

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Preparation and characterization of a novel microorganism embedding material for simultaneous nitrification

Ming Zeng, Ping Li, Nan Wu, Xiaofang Li, Chang Wang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0961-3

Abstract: A novel microorganism embedding material was prepared to enhance the biological nitrogen removal through simultaneous nitrification and denitrification. Polyvinyl alcohol (PVA), sodium alginate (SA) and cyclodextrin (CD) were used to compose gel bead with embedded activated sludge. The effects of temperature, CD addition and concentrations of PVA and SA on nitrogen removal were evaluated. Results show that the gel bead with CD addition at 30°C contributed to the highest nitrogen removal efficiency and nitrogen removal rate of 85.4% and 2.08 mg·(L·h)?1, respectively. Meanwhile, negligible NO3? and NO2? were observed, proving the occurrence of simultaneous nitrification and denitrification. The High-Throughput Sequencing confirms that the microbial community mainly contained Comamonadaceae in the proportion of 61.3%. Overall, CD increased gel bead’s porosity and resulted in the high specific endogenous respiration rate and high nitrogen removal efficiency, which is a favorable additional agent to the traditional embedding material.

Keywords： Immobilization technology Nitrogen removal Cyclodextrin Microbial community Wastewater treatment

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The effect of preparation conditions of Pt/Al

Lei YUAN, Xiang ZHENG, Kaijiao DUAN, Hao HU, Jinggang WANG, Seong Ihl WOO, Zhiming LIU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3, Pages 457-463 doi: 10.1007/s11783-013-0512-5

Abstract: Catalyst preparation conditions exert significant influence on the catalytic performance, and the catalyst

Keywords： NO_x reduction Pt/Al₂O₃ preparation condition H

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Selective preparation for biofuels and high value chemicals based on biochar catalysts

Frontiers in Energy 2023, Volume 17, Issue 5, Pages 635-653 doi: 10.1007/s11708-023-0878-4

Abstract: The topics mainly include the modification of biochar catalysts, the preparation of energy products,This paper identifies the latest preparation for energy products and other high-value chemicals based

Keywords： biomass biochar catalysts biofuels high chemicals

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A highly efficient methodology for the preparation of

Yongxin Zhang, Shucheng Wang, Yaodong Huang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3, Pages 679-686 doi: 10.1007/s11705-020-1979-9

Abstract: A convenient and highly efficient method is described for the synthesis of -methoxycarbazole derivatives, including those with sterically demanding, benzannulated, or strongly electron-donating or -withdrawing substituents. Various -methoxycarbazole derivatives were directly prepared in good-to-moderate yields by the Pd (dba) CHCl /9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene-catalyzed reactions of the corresponding dibromobiphenyl compounds and methoxya-mine. Based on this methodology, the first total synthesis of 3,3′-[oxybis(methylene)]bis(9-methoxy-9 -carbazole), an antimicrobial dimeric carbazole alkaloid previously isolated from the stem bark of , was achieved in 18% yield over seven steps from 1,2-dibromobenzene.

Keywords： N-methoxyl carbazole dimeric N-methoxyl carbazole alkaloid total synthesis double N-arylation of methoxyamine

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Kinetics of pozzolanic reaction for preparation of flue gas desulfurizer from fly ash and Ca(OH)2

WANG Jingang, HU Jinbang, WANG Daobin, DUAN Zhenya

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3, Pages 266-270 doi: 10.1007/s11705-007-0048-y

Abstract: A kinetic model of the pozzolanic reaction for the preparation of flue gas desulfurizers from fly ash

Keywords： comparison calculated pozzolanic reaction precision preparation

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preparation of Ag@AgCl/Bio-veins composites and their photocatalytic activity and recyclability

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7, Pages 906-917 doi: 10.1007/s11705-022-2273-9

Abstract: The industrial application of nano-photocatalysts in wastewater treatment has been severely restricted for a long time due to their difficult separation, poor reusability, and low efficiency. In this work, a facile strategy was proposed to enhance the photocatalytic activity and recovery performance of Ag@AgCl nanocatalysts. Biological veins (Bio-veins) with a unique 3D porous construction were used as carriers for the in-situ growth of Ag@AgCl nanoparticles. Scanning electron microscopy results showed that the Ag@AgCl nanoparticles were uniformly loaded on the surface and interior of the Bio-veins, and the size of the Ag@AgCl nanoparticles immobilized on the Bio-veins (50–300 nm) was significantly smaller than Ag@AgCl obtained by the co-precipitation method (1–3 μm). The Bio-veins played a vital role in the photocatalysis reaction system. The degradation efficiency of the Ag@AgCl/Bio-veins(CI4) was up to 3.50 times as high as pure Ag@AgCl. Furthermore, the composites also exhibited excellent recyclability and stability under both visible and solar light. This work provided a suitable strategy for nano-photocatalysts for practical application and may also offer new possibilities for the high-value utilization of biomass materials.

Keywords： Ag@AgCl biological veins photocatalytic activity recyclability

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Radioisotope Technique and Its Application Progress in China

Zhang Jinrong,Luo Zhifu

Strategic Study of CAE 2008, Volume 10, Issue 1, Pages 61-69

Abstract:

The paper introduces the inception of radioisotope and its application in China. It describes the research and development,production, application progress and the future development prospect of radioisotope and its products.

Keywords： atomic energy science and technology radioisotope preparation technique and application

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Effect of preparation parameters on catalytic properties of Pt/graphite

LIU Zhengqian, MA Jun, ZHAO Lei

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4, Pages 482-487 doi: 10.1007/s11783-007-0077-2

Abstract: Catalytic ozonation of aqueous solutions of oxalic acid was examined in the presence of graphite-supported platinum catalysts. The catalytic activity of graphite was significantly enhanced by loading platinum. The removal efficiency of oxalic acid was 3.0%, 47.6% and 99.3% for ozonation alone, graphite catalytic ozonation and Pt/graphite catalytic ozonation in 30 min under the experimental condition, respectively. The influence of support pretreatment, solvent, impregnation time, platinum loading amount and reduction temperature on the activity of Pt/graphite catalyst was investigated. The pretreatment of graphite support had no effect on activity improvement of Pt/graphite catalyst. Solvent and impregnation time also had no great effect on the activity. Platinum loading amount and reduction temperature influenced the catalyst activity significantly. The optimal catalytic performance of Pt/graphite was obtained when 1.0% platinum loading and 623 K of reduction temperature was adopted. The Pt/graphite catalyst was used for five times with no significant decrease in its activity and more than 90% oxalic acid removal was obtained.

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Preparation and application of magnetic microsphere carriers

ZHANG Bo, XING Jianmin, LIU Huizhou

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1, Pages 96-101 doi: 10.1007/s11705-007-0019-3

Abstract: In this paper, preparation methods, surface modification and application of magnetic carriers are reviewed

Keywords： microsphere biomedicine DNA purification preparation

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Prospect and Technology Progress of Bio-diesel Industry

Ji Xing,Xi Xiaolin,Kong Linhe,Li Junfeng,Li Li

Strategic Study of CAE 2002, Volume 4, Issue 9, Pages 86-93

Abstract: development of bio-diesel industry all over the world is reviewed in this article, and the problem in the preparation

Keywords： bio-diesel bio-diesel preparation bio-diesel industry

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Reactive extraction for preparation of hydrogen peroxide under pressure

CHENG Yongxi, LI Hongtao, WANG Li, LÜ Shuxiang

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3, Pages 335-340 doi: 10.1007/s11705-008-0042-z

Abstract: The preparation of hydrogen peroxide from anthrahydroquinone by reactive extraction was investigated.

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Review on design, preparation and performance characterization of gelled fuels for advanced propulsion

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 819-837 doi: 10.1007/s11705-021-2122-2

Abstract: This review provides an overview on design, preparation and performance characterization of gelled fuelsThe composition, preparation process and gelation mechanism of gelled high-energy-density fuels are described

Keywords： gelled fuels high-energy-density fuels rheological properties atomization combustion