用于苯部分加氢制环己烯的Pd-Co/γ-Al_(2)O_(3)深度脱硫剂制备与性能评价  

Preparation and performance evaluation of Pd-Co/γ-Al_(2)O_(3) ultra-deep desulfurization catalyst for partial hydrogenation of benzene to cyclohexene

作　　者：董森 李倩[2] 郭学华 刘树俊 侯莉[2] Dong Sen;Li Qian;Guo Xuehua;Liu shujun;Hou Li(Kailuan Coal Chemical R&D Center,Tangshan 063018,Hebei,China;School of Environmental and Chemical Engineering,Yanshan University,Qinhuangdao 066004,Hebei,China)

机构地区：[1]开滦煤化工研发中心,河北唐山063018 [2]燕山大学环境与化学工程学院,河北秦皇岛066004

出　　处：《工业催化》2023年第3期44-48,共5页Industrial Catalysis

基　　金：河北省重大科技成果转化项目(22281403Z)。

摘　　要：采用液相原位还原法制备三维纳米网状结构的Pd-Co/γ-Al_(2)O_(3)脱硫剂,并用于苯深度脱硫反应体系。通过XRD、SEM、TEM等对催化剂的组成、结构和形貌进行表征,对比不同物质的量比Pd-Co/γ-Al_(2)O_(3)脱硫剂对苯深度脱硫反应的影响。结果表明,具有三维网状结构的Pd-Co/γ-Al_(2)O_(3)脱硫剂,可显著提高脱硫剂的比表面积,使其表面活性位点变多。同时,生成的Pd-Co固溶体具有双金属协同吸附作用,改善了脱硫剂的脱硫性能,因此在大幅减少贵金属Pd用量前提下,脱硫剂硫容提高了37%。Pd-Co/γ-Al_(2)O_(3) desulfurizers with three-dimensional network structure for benzene deep desulfurization reaction were prepared by liquid-phase in-situ reduction method.The composition,structure and morphology of the catalysts were characterized by XRD,SEM and TEM.The effect of different atomic ratios of Pd-Co on deep desulfurization of benzene was also investigated.The results show that the three-dimensional network structure can significantly improve the specific surface area of Pd-Co/γ-Al_(2)O_(3) desulfurizer and thus increase its surface active sites.Meanwhile,the as-synthesized Pd-Co solid solution has bimetallic synergistic adsorption effect,which effectively improves the desulfurization performance of the desulfurizer.Therefore,under the condition of greatly reducing of precious metal Pd content,the sulfur capacity of desulfurizer increases by 37%.

关 键 词：催化化学 Pd-Co/γ-Al_(2)O_(3)脱硫剂 液相原位还原 三维网状结构 深度脱硫 苯部分加氢 

分 类 号：TQ426.94[化学工程] O643.36[理学—物理化学]