Quasi-operando quantification of Cu(II) ions in Cu-SSZ-13 catalyst by an NH3 temperature-programmed reduction method

Yue Ma; Xiaodong Wu; Jiancai Ding; Liping Liu; Baofang Jin; Eric D. Walter; Rui Ran; Zhichun Si; Feng Gao; Duan Weng

doi:10.1039/D0CC07346F

Quasi-operando quantification of Cu(ii) ions in Cu-SSZ-13 catalyst by an NH₃ temperature-programmed reduction method†

Yue Ma,^ab Xiaodong Wu,

*^a Jiancai Ding,^a Liping Liu,^a Baofang Jin,^a Eric D. Walter,^c Rui Ran,^a Zhichun Si,

^d Feng Gao

*^b and Duan Weng*^ad

Author affiliations

* Corresponding authors

^a The Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
E-mail: wuxiaodong@tsinghua.edu.cn, duanweng@tsinghua.edu.cn

^b Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, USA
E-mail: feng.gao@pnnl.gov

^c Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, WA, USA

^d Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China

Abstract

A quasi-operando NH₃ temperature-programmed reduction method (NH₃-TPR), with N₂:Cu = 1:1, is developed to quantify total Cu(II) ions in Cu-SSZ-13 quenched from SCR-relevant reactions, and its accuracy is confirmed by in situ EPR. [Cu(OH)]⁺-Z and Cu²⁺-2Z can be further distinguished by NH₃ reduction temperatures, and their different reducibility in SCR is revealed.

Chemical Communications

Quasi-operando quantification of Cu(ii) ions in Cu-SSZ-13 catalyst by an NH₃ temperature-programmed reduction method†

Abstract

Supplementary files

Article information

Download Citation

Author version available

Permissions

Quasi-operando quantification of Cu(II) ions in Cu-SSZ-13 catalyst by an NH₃ temperature-programmed reduction method

Social activity

Search articles by author

Spotlight

Advertisements

Chemical Communications