公开(公告)号：US20150148218A1

公开(公告)日：2015-05-28

申请号：US14090120

申请日：2013-11-26

Applicant: UT-Battelle, LLC

Inventor： Ho Nyung Lee ,  Hyoungjeen Jeen ,  Woo Seok Choi ,  Michael Biegalski ,  Chad M. Folkman ,  I-Cheng Tung ,  Dillon D. Fong ,  John W. Freeland ,  Dongwon Shin ,  Hiromichi Ohta ,  Matthew F. Chisholm

IPC: B01J23/75 ,  B01J20/04 ,  C01G51/00

CPC classification number: B01J20/04 ,  B01J23/002 ,  B01J23/78 ,  B01J23/847 ,  B01J35/0033 ,  B01J37/349 ,  C01G51/66 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2006/42

Abstract: Rapid, reversible redox activity may be accomplished at significantly reduced temperatures, as low as about 200° C., from epitaxially stabilized, oxygen vacancy ordered SrCoO2.5 and thermodynamically unfavorable perovskite SrCoO3-δ. The fast, low temperature redox activity in SrCoO3-δ may be attributed to a small Gibbs free energy difference between the two topotactic phases. Epitaxially stabilized thin films of strontium cobaltite provide a catalyst adapted to rapidly transition between oxidation states at substantially low temperatures. Methods of transitioning a strontium cobaltite catalyst from a first oxidation state to a second oxidation state are described.

Abstract translation: 快速，可逆的氧化还原活性可以在外延稳定的氧空位有序SrCoO2.5和热力学不利的钙钛矿SrCoO 3-δ的显着降低的温度，低至约200℃下完成。 SrCoO3-δ中的快速，低温氧化还原活性可归因于两个拓扑相之间的吉布斯自由能差异。 钴酸锶外延稳定的薄膜提供适合在基本上低温下快速转变氧化态的催化剂。 描述了将钴酸锶催化剂从第一氧化态转变为第二氧化态的方法。

公开(公告)号：US09550166B2

公开(公告)日：2017-01-24

申请号：US14090120

申请日：2013-11-26

Applicant: UT-Battelle, LLC

Inventor： Ho Nyung Lee ,  Hyoungjeen Jeen ,  Woo Seok Choi ,  Michael Biegalski ,  Chad M. Folkman ,  I-Cheng Tung ,  Dillon D. Fong ,  John W. Freeland ,  Dongwon Shin ,  Hiromichi Ohta ,  Matthew F. Chisholm

IPC: B01J23/58 ,  B01J20/04 ,  C01G51/00 ,  B01J23/78 ,  B01J23/847 ,  B01J37/34 ,  B01J23/00 ,  B01J35/00

CPC classification number: B01J20/04 ,  B01J23/002 ,  B01J23/78 ,  B01J23/847 ,  B01J35/0033 ,  B01J37/349 ,  C01G51/66 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2006/42

Abstract: Rapid, reversible redox activity may be accomplished at significantly reduced temperatures, as low as about 200° C., from epitaxially stabilized, oxygen vacancy ordered SrCoO2.5 and thermodynamically unfavorable perovskite SrCoO3-δ. The fast, low temperature redox activity in SrCoO3-δ may be attributed to a small Gibbs free energy difference between the two topotactic phases. Epitaxially stabilized thin films of strontium cobaltite provide a catalyst adapted to rapidly transition between oxidation states at substantially low temperatures. Methods of transitioning a strontium cobaltite catalyst from a first oxidation state to a second oxidation state are described.

Abstract translation: 快速，可逆的氧化还原活性可以在外延稳定的氧空位有序SrCoO2.5和热力学不利的钙钛矿SrCoO 3-δ的显着降低的温度，低至约200℃下完成。 SrCoO3-δ中的快速，低温氧化还原活性可归因于两个拓扑相之间的吉布斯自由能差异。 钴酸锶外延稳定的薄膜提供适合在基本上低温下快速转变氧化态的催化剂。 描述了将钴酸锶催化剂从第一氧化态转变为第二氧化态的方法。