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업싸이클링된 암모늄 파라텡스텐의 열적 및 화학적 분해법 비교 KCI 등재 SCOPUS

Comparing Thermal and Chemical Decomposition of Up-Cycled Ammonium Paratungstate(APT)

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  • URLhttps://db.koreascholar.com/Article/Detail/302084
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한국재료학회지 (Korean Journal of Materials Research)
한국재료학회 (Materials Research Society Of Korea)
초록

The possibility of using the chemical precipitation method of up-cycled ammonium paratungstate (APT) was studied and compared with the thermal decomposition method. WO3 particles were synthesized by chemical precipitation method using a 1: 2 weight ratio of APT: Di-water. For thermal decomposition, APT powder was heated for 4h at 600 oC in air atmosphere. The reaction products were characterized by X-ray diffraction (XRD), X-ray fluorescence spectrometer (XRF), particle size analyzer (PSA), and field emission-scanning electron microscopy (FE-SEM). Thermogravimetric analysis (TGA) of the upcycled APT allowed for the identification of the sequence of decomposition and reduction reactions that occurred during the heat treatment. TGA data indicated a total weight loss of 10.78% with the reactions completed in 658 oC. The XRD results showed that APT completely decomposed to WO3 by thermal decomposition and chemical precipitation. The particle size of the synthesized WO3 powders by thermal decomposition with 2 h of planetary milling was around 2 μm. During the chemical precipitation process, the particle size of the synthesized WO3 powders showed a round-shape with ~0.6 μm size.

저자
  • 정준기(강릉원주대학교 파인세라믹기술혁신센터) | Jun-Ki Chung
  • 온진호(강릉원주대학교 파인세라믹기술혁신센터) | Jin-Ho On
  • 김성진(강릉원주대학교 파인세라믹기술혁신센터) | Sung-Jin Kim
  • 박상엽(강릉원주대학교 파인세라믹기술혁신센터, 강릉원주대학교 세라믹신소재공학과) | Sang-Yeup Park Corresponding author