Abstract
A heterobimetallic metal–organic framework Co1Cu2(BHTC)2 was successfully synthesized based on biphenyl-3,4′, 5-tricarboxylate (H3BHTC). The adsorption desulfurization capability of Co1Cu2(BHTC)2 was investigated in the experiment. Scanning electron microscopy and X-ray diffraction analyses show that Co1Cu2(BHTC)2 possesses a two-dimensional hexagonal morphology and an identical crystallographic structure to that of UMCM-150. Thermogravimetric analysis and Brunauer–Emmett–Teller (BET) analysis indicate that Co1Cu2(BHTC)2 has excellent thermal stability and its BET area can reach up to 2715 m2 g–1. The adsorption desulfurization experiments were conducted based on a in-house built fixed bed at room temperature and atmospheric pressure. The sulfur capacities of the adsorbents were calculated according to breakthrough curves. Compared with UMCM-150 [Cu3(BHTC)2], Co1Cu2(BHTC)2 exhibits different adsorptive desulfurization properties. The experimental results indicate that Cu3(BHTC)2 has a higher sulfur capacity than Co1Cu2(BHTC)2 although the specific surface area of Co1Cu2(BHTC)2 is higher than that of [Cu3(BHTC)2], which can be ascribed to different open metal sites.
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