Abstract
This work mainly involved the investigation of the adsorption of propylmercaptan on bentonite adsorbents loaded Fe3+. Several factors that influence the desulfurization capability, including Fe3+ loading, calcining temperature, and the reaction temperature, were investigated. The desulfurization was enhanced by increasing the Fe3+ loading and the best result was obtained at the FeCl3 loading of 20 wt%. The adsorption capacity of propylmercaptan on bentonite loaded with Fe3+ increased with the temperature drop. Calcining of the sorbent could also improve the desulfurization capacity, and the optimum calcining temperature was 423 K. X-ray diffraction and thermogravimetric analysis showed that the iron compounds loaded on the surface of bentonite calcined at 423 K present mostly in the form of FeCl3 and exist as amorphous materials.
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