F在硫化态NiW/γ-Al_2O_3催化剂中的作用  

ROLES OF FLUORINE IN SULFIDED NiW/ γ Al 2O 3 CATALYSTS

作　　者：曲良龙[1] 建谋[1] 石亚华[1] 李大东[1] 

机构地区：[1]中国石油化工总公司石油化工科学研究院

出　　处：《催化学报》1998年第6期608-609,共2页

摘　　要：Ｆ改性的γＡｌ２Ｏ３（Ｆ／Ａｌ２Ｏ３）广泛用作加氢、裂化和异构化等反应的催化剂或载体［１］．在γＡｌ２Ｏ３表面引入氟能显著改善其对上述反应的催化活性，并影响金属组分在γＡｌ２Ｏ３载体上的分散状态及相互作用．但迄今为止，文献中对氟的作用仍众说纷纭...Roles of fluorine in sulfided NiW/ γ Al 2O 3 catalysts were studied by XPS and TFD. It was found that fluorine improves the reducibility sulfidability of tungsten species and changes the state of nickel species in the sulfided NiWF/ γ Al 2O 3 catalyst, thus to promote HDS and HDN activity of the catalyst. Fluorine can also improve the ability for hydrogen chemisorption on the catalyst.

关 键 词：氟 硫化态 镍 催化剂 加氢脱硫 加氢脱氮 

分 类 号：TE624.93[石油与天然气工程—油气加工工程] O643.36[理学—物理化学]