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Simple Preparation of W-Doped VO2 Phase Transition Powder via APT

Details: Category: Tungsten Information; Published on Thursday, 13 May 2021 05:25; Written by yuntao; Hits: 1596

Vanadium dioxide (VO2) is widely applied in the fields of intelligent energy windows coating, optical switching devices, optical data storage medium, electrodes for electrochromic, lithium batteries and supercapacitors. VO2is a reversible first-order metal-insulator transition (MIT) at a critical temperature (Tc). VO2 is a monoclinic structure (M), and presents semiconductive and relatively infrared transparent below Tc, whereas it transforms into tetragonal structure (R), and presents metallic and infrared reflection above Tc. However, the high critical transition temperature of VO2 material (about 68 °C) limits its application.

Cr-doped APT for Production of WC-CO Cemented Carbide

Details: Category: Tungsten Information; Published on Thursday, 13 May 2021 05:15; Written by yuntao; Hits: 1836

The cemented tungsten carbide hard metals have been widely used in machining, cutting, mining, and drilling tools as well as for wear-resistant equipment. Their wide application stems from their combination of desirable properties, including large hardness, wear-resistance, and fracture toughness values.

NiW HDS Catalysts Produced Using APT Targeting 4,6-DMDBT

Details: Category: Tungsten Information; Published on Thursday, 13 May 2021 04:57; Written by yuntao; Hits: 1540

The production of clean fuels with sulfur content less than 10 ppm is of very importance due to the increasingly stringent environmental legislation requirements. The conventional hydrodesulfurization (HDS) catalysts, MoS2 or WS2 clusters supported on γ-alumina (γ-Al2O3) with the promoter of Ni or Co species, were widely used in oil refinery. It was suggested that deep HDS of the highly refractory 4,6-dimethyldibenzothiophene (4,6-DMDBT) required that HDS catalysts have relatively high hydrogenation ability.

WO3-TiO2 Catalysts Obtained From APT for Pyrolysis of Cottonseed Oil Dregs

Details: Category: Tungsten Information; Published on Thursday, 13 May 2021 05:06; Written by yuntao; Hits: 1535

Biofuels have emerged as an alternative to replace fossil fuels used for energy, heat, and transport, which account for 80% of total global energy use. The growth in energy demand has intensified the search for alternative sources to replace oil, minimizing the emission of pollutants.

Tungsten-Doped Vanadium Oxide Composites Fabricated with APT for Lithium Battery Application

Details: Category: Tungsten Information; Published on Wednesday, 12 May 2021 22:23; Written by yuntao; Hits: 1497

Lithium-ion batteries (LIBs) have played an important role as the main source of power for various industries such as electric vehicles (EV) and solar energy storage tanks. LIBs have many advantages such as long cycle life, high power density and relatively low discharge speed. As the electric vehicles (EV) is growing massively in China and USA, however, the storage capacity has limited the driving range greatly.