一锅法制备铋基催化剂在乙炔氢氯化反应中催化性能的研究（英文）

Catalytic Properties of Bi-based Catalysts Prepared Using One Pot Method for Acetylene Hydrochlorination

本文采用一锅法(PM)和等体积浸渍法(IM)制备了铋基催化剂并考察了PM的制备条件对催化剂的影响.使用固定床反应器对催化剂进行评价.结果显示,PM催化剂具有较好的催化活性,此时的制备条件如下:反应温度为160?C,反应时间为2 h.对催化剂进行XRD,BET,EDS和SEM等表征,结果表明,PM催化剂具有微球形貌,提供丰富的孔道结构,较大的比表面积和更多的活性位点,改善了催化剂的催化性能.除此之外,反应中积碳可能是导致铋基催化剂失活的一个原因.

In this work,Bi-based catalysts were prepared by one pot method （PM） and incipient wetness impregnation method （IM） and preparation conditions of the PM were researched.Catalytic activity of catalysts was evaluated using a fixed-bed reactor for acetylene hydrochlorination.The results displayed that the PM catalyst was prepared at 160℃ for 2 h possessed a superior catalytic performance compared to the IM catalyst.The characterizations of XRD,BET,EDS and SEM demonstrated that the PM catalyst was microspheres structure,which could provide richer channel structures,larger specific surface areas and more active centres,thus improving the catalytic performances of catalysts.In addition,carbon deposition in the reaction was a possible reason for Bi-based catalysts deactivation.