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Low temperature synthesis of visible light responsive rutile TiO

John TELLAM, Xu ZONG, Lianzhou WANG

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1,   Pages 53-57 doi: 10.1007/s11705-011-1165-1

Abstract: A nano-structured TiO with rutile phase was synthesized by using the hydrothermal method from a titaniumcarbide (TiC) nano-powder precursor at low temperature to produce a stable visible light responsive

Keywords： photocatalysis     rutile     TiO2     hydrothermal     visible     titanium carbide    

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Silicon carbide waste as a source of mixture materials for cement mortar

Zhengwu Jiang, Qiang Ren, Haoxin Li, Qing Chen

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0974-y

Abstract: This paper presents an investigation of the feasibility of recycling silicon carbide waste (SCW) as a

Keywords： Silicon carbide waste     Cement mortar     Fluidity     Strength     Shrinkage    

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Anodization of titanium alloys for orthopedic applications

Merve İzmir, Batur Ercan

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 1,   Pages 28-45 doi: 10.1007/s11705-018-1759-y

Abstract:

In recent years, nanostructured oxide films on titanium alloy surfaces have gained significant interestand titanium alloys and summarizes the interactions between anodized titanium alloy surfaces with cellsIt will start with summarizing the mechanism of nanofeatured oxide fabrication on titanium alloys andthen switch its focus on the latest findings for anodization of titanium alloys, including the use offluoride free electrolytes and anodization of 3D titanium foams.

Keywords： titanium alloys     anodization     biocompatibility     orthopedics    

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Titanium: The Metal Giant in the New Millennium

Yang Yuchun

Strategic Study of CAE 2002, Volume 4, Issue 3,   Pages 21-31

Abstract:

The rise and development of the extraction of titanium sponge and the manufacture of titanium millThe wide application and important role of metallic titanium, titanium products and titanium-based alloysThe market prospect for titanium industry in the new millennium is forecast and some suggestions on thebetter development of titanium industry are put forward.

Keywords： titanium     titanium sponge     titanium products     titanium industry     market demand and supply of titanium    

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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: Calcium carbide was successfully synthesized by carbothermal reduction of lime with coke at 1973 K forAddition of potassium carbonate increased the yield of calcium carbide.This result confirmed the catalytic effect of potassium carbonate on the synthesis of calcium carbidethe contact between CaO and carbon, which was essential for the solid-solid reaction to form calcium carbide

Keywords： calcium carbide     synthesis     catalysis    

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Comprehensive strengthening mechanism of steel based on nano scale cementite precipitates

Fu Jie,Li Guangqiang,Yu Yueguang,Mao Xinping,Fang Keming

Strategic Study of CAE 2011, Volume 13, Issue 1,   Pages 31-42

Abstract:

This paper summarized the status of comprehensive strengthening mechanism of steel. By using chemical phase analysis, X-ray small-angle scattering, RTO and high-resolution TEM observation, the properties of nano-scale cementite precipitates in Ti micro-alloyed high strength weathering steels produced by thin slab continuous casting and rolling process were analyzed. Except nano-scale TiC, cementites precipitates less than 36 nm and high volume fraction were also found in Ti micro-alloyed high strength weathering steels.The volume fraction of cementite less than 36 nm is 4.4 times as much as that of TiC in the same size. Cementite with high volume fraction has stronger precipitation strengthening effect than that of nano-scale TiC, which can not be ignored.The precipitation strengthening contributions of nano-scale precipitates of different types and sizes should be calculated respectively according to the mechanisms of dislocation intersection and dislocation bypass, and then be added up with the contributions of solid solution strengthening and grain refinement strengthening.A formula for calculate the yield strength of low carbon steel is proposed, and the calculated yield strength considering the precipitation strengthening contributions of nano-scale precipitates and the comprehensive strengthening mechanism of steels matches the experimental results well. The calculated σs=630~676 MPa, while the examined σs=630~680 MPa. The reason for grain refinement strengthening can not directly plus dislocation strengthening and the performance form of phase transformation's influence on steel strength were debated.The applications for comprehensive strengthening theory were summarized, and several scientific questions for further study were put forward.

Keywords： yield strength     nano-scale cementite     nano-scale titanium carbide     precipitation strengthening     comprehensive    

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Platinum on nitrogen doped graphene and tungsten carbide supports for ammonia electro-oxidation reaction

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 930-938 doi: 10.1007/s11705-021-2130-2

Abstract: Ammonia electrooxidation reaction involving multistep electron-proton transfer is a significant reaction for fuel cells, hydrogen production and understanding nitrogen cycle. Platinum has been established as the best electrocatalyst for ammonia oxidation in aqueous alkaline media. In this study, Pt/nitrogen-doped graphene (NDG) and Pt/tungsten monocarbide (WC)/NDG are synthesized by a wet chemistry method and their ammonia oxidation activities are compared to commercial Pt/C. Pt/NDG exhibits a specific activity of 0.472 mA∙cm–2, which is 44% higher than commercial Pt/C, thus establishing NDG as a more effective support than carbon black. Moreover, it is demonstrated that WC as a support also impacts the activity with further 30% increase in comparison to NDG. Surface modification with Ir resulted in the best electrocatalytic activity with Pt-Ir/WC/NDG having almost thrice the current density of commercial Pt/C. This work adds insights regarding the role of NDG and WC as efficient supports along with significant impact of Ir surface modification.

Keywords： Ammonia electro-oxidation reaction     electrocatalyst supports     platinum     nitrogen doped graphene     tungsten carbide    

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Application of Titanium in Automotive Industry and Metallurgical Technologies for Cutting the Cost ofTitanium materials

Yang Yuchun

Strategic Study of CAE 2005, Volume 7, Issue 8,   Pages 9-17

Abstract:

The advantages offered by titanium materials to the automotive industry including reducing vehicleLow cost production technologies of sponge titanium and titanium materials are introduced and evaluated

Keywords： titanium     titanium materials in automotive manufacture     new metallurgical processing of titanium    

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Removal of fluoride from water using titanium-based adsorbents

Zhijian LI, Shubo DENG, Xueying ZHANG, Wei ZHOU, Jun HUANG, Gang YU

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 4,   Pages 414-420 doi: 10.1007/s11783-010-0241-y

Abstract: Three adsorbents including TiO , Ti-Ce, and Ti-La hybrid oxides were prepared to remove fluoride from aqueous solution. The Ti-Ce and Ti-La hybrid adsorbents obtained by the hydrolysis-precipitation method had much higher sorption capacity for fluoride than the TiO adsorbent prepared through hydrolysis. Rare earth (Ce and La) oxides and TiO exhibited a synergistic effect in the hybrid adsorbents for fluoride sorption. The sorption equilibrium of fluoride on the three adsorbents was achieved within 4 h, and the pseudo-second-order model described the sorption kinetics well. The sorption isotherms fitted the Langmuir model well, and the adsorption capacities of fluoride on the Ti-Ce and Ti-La adsorbents were about 9.6 and 15.1 mg·g , respectively, at the equilibrium fluoride concentration of 1.0 mg·L , much higher than the 1.7 mg·g on the TiO . The sorption capacities of fluoride on the three adsorbents decreased significantly when the solution pH increased from 3 to 9.5. The electrostatic interaction played an important role in fluoride removal by the three adsorbents, and Fourier transform infrared (FTIR) analysis indicated that the hydroxyl groups on the adsorbent surface were involved in fluoride adsorption.

Keywords： fluoride adsorption     titanium dioxide     titanium-based adsorbent     sorption mechanism    

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Photocatalytic reduction of carbon dioxide by titanium oxide-based semiconductors to produce fuels

Xi CHEN, Fangming JIN

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 207-220 doi: 10.1007/s11708-019-0628-9

Abstract: So far, titanium oxide-based semiconductors have been the most prevalently adopted catalysts in carbonThis mini-review provides a general summary of the recent progresses in titanium oxide-catalyzed photocatalyticLastly, it discusses multi-component hybrid titanium oxide composites.

Keywords： photocatalysis     carbon dioxide reduction     semiconductors     titanium oxide     renewable fuels    

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The modification of titanium in mesoporous silica for Co-based Fischer–Tropsch catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1224-1236 doi: 10.1007/s11705-022-2139-1

Abstract: Ordered SBA-15 mesoporous silica with incorporated titanium was successfully synthesized via a one-potThe results showed that titanium was successfully incorporated into the mesoporous silica framework witha limited amount of titanium (Si/Ti > 20), and the mesoporous structure was retained.However, the increased titanium content inevitably resulted in the formation of anatase TiO 2titanium strengthened the interactions between cobalt species and supports

Keywords： Fischer–Tropsch synthesis     titanium incorporation     mesoporous silica     metal-support interactions     C   

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Machinability of damage-tolerant titanium alloy in orthogonal turn-milling

Tao SUN, Lufang QIN, Junming HOU, Yucan FU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 504-515 doi: 10.1007/s11465-020-0586-2

Abstract: The damage-tolerant titanium alloy TC21 is used extensively in important parts of advanced aircraft because

Keywords： orthogonal turn-milling     damage-tolerant titanium alloy     tool life and failure     machined surface integrity    

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Effect of triethylamine treatment of titanium silicalite-1 on propylene epoxidation

Juan XU,Yaquan WANG,Wenping FENG,Yi LIN,Shuhai WANG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 478-487 doi: 10.1007/s11705-014-1453-7

Abstract: Titanium silicalite-1(TS-1) treated with triethylamine (TEA) solution under different conditions was

Keywords： titanium silicalite-1     triethylamine     hollow cavity     epoxidation of propylene     catalyst life    

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A Breakthrough in Pressure Generation by a Kawai-Type Multi-Anvil Apparatus with Tungsten Carbide Anvils Review

Takayuki Ishii, Zhaodong Liu, Tomoo Katsura

Engineering 2019, Volume 5, Issue 3,   Pages 434-440 doi: 10.1016/j.eng.2019.01.013

Abstract:

Expansion of the pressure range of Kawai-type multi-anvil presses (KMAPs) with tungsten carbide (WC

Keywords： High pressure     Multi-anvil apparatus     Tungsten carbide anvil     Sintered diamond anvil     Lower mantle    

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Pd-Ni nanoparticles supported on titanium oxide as effective catalysts for Suzuki-Miyaura coupling reactions

Dongxu Han, Zhiguo Zhang, Zongbi Bao, Huabin Xing, Qilong Ren

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 24-31 doi: 10.1007/s11705-017-1669-4

Abstract: Small monodispersed Pd-Ni bimetallic nanoparticles were loaded on the surface of titanium oxide nanopowder

Keywords： Pd-Ni bimetallic nanoparticles     nanocatalysis     Suzuki-Miyaura reaction     titanium oxide    

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Title Author Date Type Operation

Low temperature synthesis of visible light responsive rutile TiO

John TELLAM, Xu ZONG, Lianzhou WANG

Journal Article

Silicon carbide waste as a source of mixture materials for cement mortar

Zhengwu Jiang, Qiang Ren, Haoxin Li, Qing Chen

Journal Article

Anodization of titanium alloys for orthopedic applications

Merve İzmir, Batur Ercan

Journal Article

Titanium: The Metal Giant in the New Millennium

Yang Yuchun

Journal Article

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

Dejun SHI, Ke QIAO, Zifeng YAN

Journal Article

Comprehensive strengthening mechanism of steel based on nano scale cementite precipitates

Fu Jie,Li Guangqiang,Yu Yueguang,Mao Xinping,Fang Keming

Journal Article

Platinum on nitrogen doped graphene and tungsten carbide supports for ammonia electro-oxidation reaction

Journal Article

Application of Titanium in Automotive Industry and Metallurgical Technologies for Cutting the Cost ofTitanium materials

Yang Yuchun

Journal Article

Removal of fluoride from water using titanium-based adsorbents

Zhijian LI, Shubo DENG, Xueying ZHANG, Wei ZHOU, Jun HUANG, Gang YU

Journal Article

Photocatalytic reduction of carbon dioxide by titanium oxide-based semiconductors to produce fuels

Xi CHEN, Fangming JIN

Journal Article

The modification of titanium in mesoporous silica for Co-based Fischer–Tropsch catalysts

Journal Article

Machinability of damage-tolerant titanium alloy in orthogonal turn-milling

Tao SUN, Lufang QIN, Junming HOU, Yucan FU

Journal Article

Effect of triethylamine treatment of titanium silicalite-1 on propylene epoxidation

Juan XU,Yaquan WANG,Wenping FENG,Yi LIN,Shuhai WANG

Journal Article

A Breakthrough in Pressure Generation by a Kawai-Type Multi-Anvil Apparatus with Tungsten Carbide Anvils

Takayuki Ishii, Zhaodong Liu, Tomoo Katsura

Journal Article

Pd-Ni nanoparticles supported on titanium oxide as effective catalysts for Suzuki-Miyaura coupling reactions

Dongxu Han, Zhiguo Zhang, Zongbi Bao, Huabin Xing, Qilong Ren

Journal Article