Funding for this research was provided by:
Natural Science Foundation of Ningxia Province ((NZ17262))
New Catalytic Process in Clean Energy Production (ZDZX201803)
Open Project of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University (2019-KF-36)
Article History
Received: 2 March 2020
Accepted: 16 May 2020
First Online: 22 May 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.