国产日韩亚洲大尺度高清,国产高潮流白浆喷水免费网站,97久久综合区小说区图片区,精品国产免费第一区二区三区

Preparation of Ultrafine Yellow Tungsten Oxide Powder by Solid Phase Method

How to prepare ultrafine yellow tungsten oxide powder by solid phase method? Or how to prepare ultrafine tungsten trioxide powder? Or how to prepare ultrafine WO3 powder?

More details, please visit:
http://tungsten-oxide.com/index.html

preparation of ultrafine yellow tungsten oxide powder by solid phase method picture

Preparation of Ultrafine Yellow Tungsten Oxide Powder by Solid Phase Method
Some researchers put a certain amount of ammonium tungstate in a muffle furnace and calcined it at 600 °C for 3 h to obtain yellow tungsten oxide powder with an average particle size of 72nm, and analyzed the obtained powder by XRD to find that it had two types of crystalline phases - monoclinic crystal phase and triclinic crystal phase. Some researchers calcined ammonium paratungstate at high temperature to obtain yellow tungsten oxide powder, and sintered the prepared WO3 powder into a gas-sensitive element. And some researchers calcined chemically pure H2WO4 at 400 °C to obtain yellow tungsten oxide powder. The prepared powder was polycrystalline tungsten trioxide, with triclinic phase and orthorhombic phase.

Comments are closed.

Address: 3F, No.25-1 WH Rd., Xiamen Software Park Ⅱ, FJ 361008,China Copyright ? 1997 - 2024 CTIA All Rights Reserved
Phone:+86-592-5129696,+86-592-5129595;    Email: sales@chinatungsten.com
舊版