Synthesis of carbon nanotube-supported metallo carboxyporphyrin as a novel nanocatalyst for the mercaptan removal

• A new nanocatalyst for the mercaptan removal has been synthesized.
• The nanocatalyst showed good results for mercaptan removal.
• The nanocatalyst has been characterized well by common methods (XRD, SEM, FT-IR).

A carbon nanotube-supported metallo carboxyporphyrin has been synthesized and characterized by X-ray diffraction (XRD), field-emission scanning electronic microscopy (SEM), and Fourier transform infrared spectroscopy (FT-IR). The prepared catalyst has been evaluated for the removal of mercaptan from gas stream in a fixed bed reactor. The effect of important operating parameters including temperature, gas hourly space velocity (GHSV), and loading (%) was investigated on the mercaptan removal. The results confirmed that the mercaptan concentration could be reduced from 16,800 ppm to less than 10 ppm under optimized conditions by (Fe)TCPP-MWCNTs-NH2 as nanocatalyst.

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