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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 wasThe characterization results show that many irregular hollows are generated in the TS-1 crystals dueThe modified TS-1 samples improved in varying degrees the catalyst life for the epoxidation of propylene

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

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

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: Titanium silicalite-1 (TS-1) has been hydrothermally synthesized with tetrapropylammonium hydroxide (results show that with the increase of Na concentration in the synthesis, both the crystal sizes of TS-1andaddition, which can be attributed to more high molecular weight byproducts deposited in the large TS-1particles and the loss of the frame-work titanium.

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

affecting the formation of zeolite seed layers and the effects of seed layers on the growth of zeolite silicalite-1-1 membranes

ZHANG Xiongfu, WANG Jinqu, LIU Hai′ou, WANG Anjie

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 172-177 doi: 10.1007/s11705-007-0032-6

Abstract: The present study investigates the formation of silicalite-1 seed layers on a porous carbon support of0.5 μm pore size and α-A1O supports with different pore sizes (0.1 μm and 4 μm) via the slip-castingThe growth of silicalite-1 membranes on different seeded supports by hydrothermal synthesis was also

Keywords: silicalite-1     α-A1O     growth     seeding ethanol     quality    

Copolymerization of 1-butene and 1-hexene with supported titanium catalyst

ZHAO Yongxian, SHAO Huafeng, WANG Bo, YAO Wei, HUANG Baochen

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 304-309 doi: 10.1007/s11705-007-0056-y

Abstract: With TiCl/MgCl (Ti) and Al(-Bu) (Al) as catalysts, the thermoplastic copolymer of 1-butene(Bt) and 1-The crystallization and stereoregularity of poly(1-butene) decreased with the addition of He.

Keywords: reaction     conversion     temperature     polymerization temperature     magnetic resonance    

Influence of Na

Rumin YANG, Fanhui MENG, Xiao WANG, Yaquan WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 401-408 doi: 10.1007/s11705-011-1129-5

Abstract: Silicalite-1 was hydrothermally synthesized in the presence of different concentrations of Na usingThe silicalite-1samples were characterized using X-ray diffraction, scanning electron microscopy, NDuring the synthesis, the sodium ions were incorporated onto the silicalite-1 crystals, but were thenHowever, for Na concentrations≥5 mol-%, the particle sizes of silicalite-1 increased and the catalytic

Keywords: silicalite-1     cyclohexanone oxime     vapor phase Beckmann rearrangement     ?-caprolactam    

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    

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    

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    

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    

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    

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   

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    

Passive mode-locked Er-doped fiber laser pulse generation based on titanium disulfide saturable absorber Research Articles

Xinxin Shang, Linguang Guo, Huanian Zhang, Dengwang Li, Qingyang Yue,huanian_zhang@163.com,qingyangyue@sdnu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 5,   Pages 615-766 doi: 10.1631/FITEE.2000341

Abstract: In this study, (TiS) polyvinyl alcohol (PVA) film-type (SA) is synthesized with a modulation depth of 5.08% and a saturable intensity of 10.62 MW/cm by liquid-phase exfoliation and spin-coating methods. Since TiS-based SA has a strong nonlinear saturable absorption property, two types of optical soliton were observed in a mode-locked Er-doped . When the pump power was raised to 67.3 mW, a conventional mode-locked pulse train with a repetition rate of 1.716 MHz and a pulse width of 6.57 ps was generated, and the output spectrum centered at 1556.98 nm and 0.466 nm spectral width with obvious Kelly sidebands was obtained. Another type of mode-locked pulse train with the maximum output power of 3.92 mW and pulse energy of 2.28 nJ at the pump power of 517.2 mW was achieved when the polarization controllers were adjusted. Since TiS-based SA has excellent nonlinear saturable absorption characteristics, broad applications in ultrafast photonic are expected.

Keywords: 光纤激光器;被动锁模;可饱和吸收体;二硫化钛    

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    

Insight into the effect of surface carboxyl and amino groups on the adsorption of titanium dioxide for

Wenlong Zhang, Xuyang Zhao, Lin Zhang, Jinwei Zhu, Shanshan Li, Ping Hu, Jiangtao Feng, Wei Yan

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1147-1157 doi: 10.1007/s11705-020-1978-x

Abstract: In this study, TiO functionalized with organic groups were prepared to study the effect of carboxyl and amino groups on the adsorption behavior of TiO for the removal of acid red G (ARG) as an anionic dye from aqueous solution. TiO was successfully modified with carboxyl and amino groups by using the hydrolysis method with oxalic acid (OAD, with two carboxyl groups), ethylenediamine (EDA, with two amino groups) and DL-alanine (DLA, with one carboxyl group and one amino group) at low temperature (65 °C) and labeled as OAD-TiO , EDA-TiO and DLA-TiO , respectively. The ARG uptake by the functionalized TiO samples was largely dependent on the functional groups. The interaction between ARG and the functional organic groups on the TiO samples plays an important role in the adsorption process, which leads to the excellent adsorption performance (higher capacity and faster adsorption rate) of the functionalized TiO samples than that of P25 (commercial TiO without modification). Furthermore, there is no obvious loss of the adsorption capacity for the functionalized TiO even after 5 adsorption-desorption cycles, which indicated the good reusability of the modified TiO samples for anionic dye removal from aqueous solution.

Keywords: amino group     carboxylic group     titanium dioxide     ARG     adsorption    

Title Author Date Type Operation

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

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

Journal Article

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

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

Journal Article

affecting the formation of zeolite seed layers and the effects of seed layers on the growth of zeolite silicalite-1-1 membranes

ZHANG Xiongfu, WANG Jinqu, LIU Hai′ou, WANG Anjie

Journal Article

Copolymerization of 1-butene and 1-hexene with supported titanium catalyst

ZHAO Yongxian, SHAO Huafeng, WANG Bo, YAO Wei, HUANG Baochen

Journal Article

Influence of Na

Rumin YANG, Fanhui MENG, Xiao WANG, Yaquan WANG

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

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

Passive mode-locked Er-doped fiber laser pulse generation based on titanium disulfide saturable absorber

Xinxin Shang, Linguang Guo, Huanian Zhang, Dengwang Li, Qingyang Yue,huanian_zhang@163.com,qingyangyue@sdnu.edu.cn

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

Insight into the effect of surface carboxyl and amino groups on the adsorption of titanium dioxide for

Wenlong Zhang, Xuyang Zhao, Lin Zhang, Jinwei Zhu, Shanshan Li, Ping Hu, Jiangtao Feng, Wei Yan

Journal Article