申请人:——
公开号:US20030017944A1
公开(公告)日:2003-01-23
Disclosed is a process for producing an oxide catalyst comprising, as component elements, molybdenum (Mo), vanadium (V), at least one element selected from the group consisting of the two elements of antimony (Sb) and tellurium (Te), and niobium (Nb), wherein the process comprises providing an aqueous raw material mixture containing compounds of the component elements of the oxide catalyst, and drying the aqueous raw material mixture, followed by calcination, and wherein, in the aqueous raw material mixture, at least a part of the niobium compound as one of the compounds of the component elements is present in the form of a complex thereof with a complexing agent comprising a compound having a hydroxyl group bonded to an oxygen atom or a carbon atom. Also disclosed is a process for producing (meth)acrylonitrile or (meth)acrylic acid, which comprises performing the ammoxidation or oxidation of propane or isobutane in the gaseous phase in the presence of the oxide catalyst.
本发明公开了一种制备氧化物催化剂的方法,其包含以下组分元素:钼(Mo)、钒(V)、选自锑(Sb)和碲(Te)两种元素组成的群组中至少一种元素,以及铌(Nb)。该方法包括提供含有氧化物催化剂组分元素化合物的水性原料混合物,并使水性原料混合物干燥,随后进行焙烧。在水性原料混合物中,至少有一部分铌化合物作为组分元素之一以与具有羟基键合到氧原子或碳原子的络合剂的络合物形式存在。本发明还公开了一种制备(甲基)丙烯腈或(甲基)丙烯酸的方法,其包括在氧化物催化剂的存在下,在气相中进行丙烷或异丁烷的氨氧化或氧化。