鉿酸鍶

鉿酸鍶
英文名	Strontium hafnate
識別
CAS號	12029-24-2
PubChem	20633930（結構錯誤）
SMILES	[Sr+2].[O-]Hf(=O)[O-];
InChIKey	RNFADRXKYVCNTI-UHFFFAOYSA-N
性質
化學式	SrHfO3
摩爾質量	314.113（無水）; 350.145（二水） g·mol⁻¹
外觀	玻璃或陶瓷狀固體
密度	7.6 g/cm3
熔點	2930 °C
折光度n; D	2.01
結構
晶體結構	鈣鈦礦
空間群	62
晶格常數	a = 5.793 Å, b = 8.188 Å, c = 5.785 Å (25 °C)
	若非註明，所有數據均出自標準狀態（25 ℃，100 kPa）下。

鉿酸鍶是一種無機化合物，化學式為SrHfO₃，存在無水物和二水合物。^[4]

製備

鉿酸鍶可以HfO(NO₃)₂·2H₂O和SrCO₃為原料製備。先將硝酸鹽溶於水，按化學計量比加入SrCO₃，在水中，HfO(NO₃)₂發生水解：

HfO(NO₃)₂ + 2 H₂O → Hf(OH)₄ + 2 HNO₃

水解產生的HNO₃作用於SrCO₃：

2 HNO₃ + SrCO₃ → Sr(NO₃)₂ + H₂O + CO₂↑

最後，將溶液蒸乾，在高溫下，Hf(OH)₄分解為HfO₂，Sr(NO₃)₂先分解為Sr(NO₂)₂，然後進一步分解為SrO，高於700℃時，兩者反應，得到產物SrHfO₃：^[5]

SrO + HfO₂ → SrHfO₃

鉿酸鍶也可以通過在電化學電池中的陽極轉換反應製備，所用電壓高達210V，電極溫度控制在300 K。鉿箔未沉積的部分需要用1:1的硝酸和氫氟酸清洗。^[6]鉿酸鍶的薄膜還可以通過Hf對SrO₂靶的氣相沉積來製備。^[7]在Si(100)底物上的等離子氣相沉積也能夠製得產物，反應中用(MeCp)₂Hf(OMe)將會提高生長速率。^[8]

用途

鉿酸鍶參雜某些金屬（如鈰），可以得到閃爍陶瓷粉體材料。^[9]

參考文獻

^ Feteira, Antonio; Sinclair, Derek C.; Rajab, Khalid Z.; Lanagan, Michael T. Crystal Structure and Microwave Dielectric Properties of Alkaline-Earth Hafnates, AHfO₃ (A=Ba, Sr, Ca). Journal of the American Ceramic Society. 2008, 91 (3): 893 – 901. doi:10.1111/j.1551-2916.2007.02134.x.
^ Yamanaka, Shinsuke; Maekawa, Takuji; Muta, Hiroaki; Matsuda, Tetsushi; Kobayashi, Shin-ichi; Kurosaki, Ken. Thermal and mechanical properties of SrHfO3. Journal of Alloys and Compounds. 2004, 381 (1-2): 295–300. doi:10.1016/j.jallcom.2004.03.113.
^ Ye, Tiannan; Dong, Zhenghong; Zhao, Yongnan; Yu, Jianguo; Wang, Fengqin; Zhang, Lingling; Zou, Yongcun. Rationally fabricating hollow particles of complex oxides by a templateless hydrothermal route: The case of single-crystalline SrHfO₃ hollow cuboidal nanoshells. Dalton Transactions. 2011, 40 (11): 2601 – 2606. doi:10.1039/C0DT01354D.
^ Kostrikin A.V.; Spiridonov F.M.; Lin'ko I.V.; et al. On Hydrated Strontium Hafnate. Russian Journal of Inorganic Chemistry. 2001, 46 (5): 639–641 [2024-11-22]. （原始內容存檔於2024-09-09）.
^ Lukin, E. S.; Soyuzova, A. Ya. The synthesis, sintering, and properties of strontium hafnate. Refractories. 1973, 14 (3-4): 174–180. ISSN 0034-3102. doi:10.1007/BF01286429.
^ Schreckenbach, J.P; Meyer, N; Marx, G; Lee, B.T; Kriven, W.M. Strontium hafnate phases by anodic spark conversion. Applied Surface Science. 2003, 205 (1-4): 97–101. doi:10.1016/S0169-4332(02)01039-5.
^ McCarthy, I.; Agustin, M.P.; Shamuilia, S.; Stemmer, S.; Afanas'ev, V.V.; Campbell, S.A. Strontium hafnate films deposited by physical vapor deposition. Thin Solid Films. 2006, 515 (4): 2527–2530. doi:10.1016/j.tsf.2006.07.030.
^ Black, K.; Werner, M.; Rowlands–Jones, R.; Chalker, P.R.; Rosseinsky, M.J. SrHfO₃ Films Grown on Si(100) by Plasma-Assisted Atomic Layer Deposition.. Chemistry of Materials. 2011-05-24, 23 (10): 2518–2520. ISSN 0897-4756. doi:10.1021/cm200315u.
^ 劉亞慧, 柏朝暉. 鹼土鉿酸鹽閃爍陶瓷粉體的製備與表徵. 化學工程與裝備, 2009(10):33-35

拓展閱讀

Red'ko, V.P.; Shevchenko, A.V.; Lopato, L.M. Polimorfizm gafnata i tsirkoniya strontsiya [Polymorphism of strontium hafnate and zirconate]. Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy, 1988. 24(12): 2027-2030
Ma, Wen; Li, Peng; Dong, Hongying; Bai, Yu; Zhao, Jinlan; Fan, Xiaoze. Y₂O₃ and Yb₂O₃ Co-doped Strontium Hafnate as a New Thermal Barrier Coating Material. Journal of Thermal Spray Technology. 2014, 23 (1-2): 154–159. ISSN 1059-9630. doi:10.1007/s11666-013-0006-9.

[1] Feteira, Antonio; Sinclair, Derek C.; Rajab, Khalid Z.; Lanagan, Michael T. Crystal Structure and Microwave Dielectric Properties of Alkaline-Earth Hafnates, AHfO₃ (A=Ba, Sr, Ca). Journal of the American Ceramic Society. 2008, 91 (3): 893 – 901. doi:10.1111/j.1551-2916.2007.02134.x.

[2] Yamanaka, Shinsuke; Maekawa, Takuji; Muta, Hiroaki; Matsuda, Tetsushi; Kobayashi, Shin-ichi; Kurosaki, Ken. Thermal and mechanical properties of SrHfO3. Journal of Alloys and Compounds. 2004, 381 (1-2): 295–300. doi:10.1016/j.jallcom.2004.03.113.

[3] Ye, Tiannan; Dong, Zhenghong; Zhao, Yongnan; Yu, Jianguo; Wang, Fengqin; Zhang, Lingling; Zou, Yongcun. Rationally fabricating hollow particles of complex oxides by a templateless hydrothermal route: The case of single-crystalline SrHfO₃ hollow cuboidal nanoshells. Dalton Transactions. 2011, 40 (11): 2601 – 2606. doi:10.1039/C0DT01354D.

[4] Kostrikin A.V.; Spiridonov F.M.; Lin'ko I.V.; et al. On Hydrated Strontium Hafnate. Russian Journal of Inorganic Chemistry. 2001, 46 (5): 639–641 [2024-11-22]. （原始內容存檔於2024-09-09）.

[5] Lukin, E. S.; Soyuzova, A. Ya. The synthesis, sintering, and properties of strontium hafnate. Refractories. 1973, 14 (3-4): 174–180. ISSN 0034-3102. doi:10.1007/BF01286429.

[6] Schreckenbach, J.P; Meyer, N; Marx, G; Lee, B.T; Kriven, W.M. Strontium hafnate phases by anodic spark conversion. Applied Surface Science. 2003, 205 (1-4): 97–101. doi:10.1016/S0169-4332(02)01039-5.

[7] McCarthy, I.; Agustin, M.P.; Shamuilia, S.; Stemmer, S.; Afanas'ev, V.V.; Campbell, S.A. Strontium hafnate films deposited by physical vapor deposition. Thin Solid Films. 2006, 515 (4): 2527–2530. doi:10.1016/j.tsf.2006.07.030.

[8] Black, K.; Werner, M.; Rowlands–Jones, R.; Chalker, P.R.; Rosseinsky, M.J. SrHfO₃ Films Grown on Si(100) by Plasma-Assisted Atomic Layer Deposition.. Chemistry of Materials. 2011-05-24, 23 (10): 2518–2520. ISSN 0897-4756. doi:10.1021/cm200315u.

[9] 劉亞慧, 柏朝暉. 鹼土鉿酸鹽閃爍陶瓷粉體的製備與表徵. 化學工程與裝備, 2009(10):33-35

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