ZHANG Xiao, SHEN Boxiong, CHI Guilong, et al. Preparation of bromine modified metal-organic frameworks for element mercury adsorption[J]. CIESC Journal, 2016, (6): 2380-2385.
ZHANG Xiao, SHEN Boxiong, CHI Guilong, et al. Preparation of bromine modified metal-organic frameworks for element mercury adsorption[J]. CIESC Journal, 2016, (6): 2380-2385.DOI: 10.11949/j.issn.0438-1157.20151730.
Bromine modified metal organic framework (MOF) was synthesized by solvothermal method for element mercury (Hg0) adsorption. The crystal structure
chemical and texture properties of the modified MOF were characterized using X-ray diffraction (XRD)
X-ray photoelectron spectroscopy (XPS) and N2 adsorption. Covalent bromine was detected on the surface of the modified MOF and the modification process resulted in a lower specific surface area and total pore volume than those of unmodified MOF. Hg0 removal efficiencies increased with temperature for both modified MOF and un-modified MOF sorbent. In the dynamic adsorption experiments
which were conducted trying to mimic the flue gas condition
the bromine modified MOF showed a high Hg0 removal efficiency of above 95% for 10 h at 240℃
while the efficiency dropped to 75% within 5 h for both unmodified MOF and traditional active carbon sorbent.