title: Sn-Mn binary metal oxides as non-carbon sorbent for mercury removal in a wide-temperature window.
abstract: A series of Sn-Mn binary metal oxides were prepared through co-precipitation method. The sorbents were characterized by powder X-ray diffraction (powder XRD), transmission electronic microscopy (TEM), H2-temperature-programmed reduction (H2-TPR) and NH3-temperature-programmed desorption (NH3-TPD) methods. The capability of the prepared sorbents for mercury adsorption from simulated flue gas was investigated by fixed-bed experiments. Results showed that mercury adsorption on pure SnO2 particles was negligible in the test temperature range, comparatively, mercury capacity on MnOx at low temperature was relative high, but the capacity would decrease significantly when the temperature was elevated. Interestingly, for Sn-Mn binary metal oxide, mercury capacity increased not only at low temperature but also at high temperature. Furthermore, the impact of SO2 on mercury adsorption capability of Sn-Mn binary metal oxides was also investigated and it was noted that the effect at low temperature was different comparing with that of high temperature. The mechanism was investigated by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTs). Moreover, a mathematic model was built to calculate mercury desorption activation energy from Sn to Mn binary metal oxides.
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Jiangkun
authors.initials: J
authors.lastname: Xie
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Haomiao
authors.initials: H
authors.lastname: Xu
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: quzan@sjtu.edu.cn.
authors.forename: Zan
authors.initials: Z
authors.lastname: Qu
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Wenjun
authors.initials: W
authors.lastname: Huang
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Wanmiao
authors.initials: W
authors.lastname: Chen
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Yongpeng
authors.initials: Y
authors.lastname: Ma
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Songjian
authors.initials: S
authors.lastname: Zhao
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Liu
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: nqyan@sjtu.edu.cn.
authors.forename: Naiqiang
authors.initials: N
authors.lastname: Yan
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000302:isolation & purification*; D052918:Environmental Restoration and Remediation / Q000295:instrumentation*; D004867:Equipment Design; D008345:Manganese / Q000737:chemistry*; D008628:Mercury / Q000302:isolation & purification*; D010087:Oxides / Q000737:chemistry*; D013696:Temperature; D014001:Tin / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D000393:Air Pollutants; D010087:Oxides; D008345:Manganese; D014001:Tin; D008628:Mercury
keywords: Mercury adsorbent; Mercury stability; Sn–Mn binary metal oxide; Wide temperature window