公开(公告)号：US5208371A

公开(公告)日：1993-05-04

申请号：US873223

申请日：1992-04-24

申请人： Tooru Kuroda ,  Motomu Oh-Kita ,  Masaaki Kato

发明人： Tooru Kuroda ,  Motomu Oh-Kita ,  Masaaki Kato

IPC分类号： B01J23/88 ,  B01J23/887 ,  B01J23/888 ,  B01J27/051 ,  B01J27/055 ,  B01J27/132 ,  B01J27/192 ,  C07C45/35 ,  C07C45/37 ,  C07C51/235 ,  C07C51/25

CPC分类号： B01J23/8878 ,  B01J23/002 ,  B01J23/88 ,  B01J23/8876 ,  B01J23/8885 ,  B01J27/051 ,  B01J27/055 ,  B01J27/132 ,  B01J27/192 ,  C07C45/35 ,  C07C45/37 ,  C07C51/235 ,  C07C51/252 ,  B01J2523/00

摘要： The invention provides a process for industrially and advantageous production of methacrolein and methacrylic acid which comprises subjecting isobutylene or tert-butanol to gas phase catalytic oxidation with a molecular oxygen-containing gas in the presence of a catalyst having the composition represented by the following formula:Mo.sub.a W.sub.b Bi.sub.c Fe.sub.d Sb.sub.e Cr.sub.f Si.sub.g A.sub.h X.sub.i Y.sub.j Z.sub.k O.sub.lwherein Mo, W, B, Fe, Sb, Cr, Si and O represent molybdenum, tungsten, bismuth, iron, antimony, chromium, silicon and oxygen, respectively; A represents at least one element selected from the group consisting of nickel and cobalt; X represents at least one element selected from the group consisting of potassium, rubidium, cesium and thallium; Y represents at least one element selected from the group consisting of magnesium, zinc, manganese, cadmium, lead and barium; Z represents at least one element selected from the group consisting of phosphorus, boron, sulfur, chlorine, cerium, tin and titanium; a, b, c, d, e, f, g, h, i, j, k and l each represents atomic ratio of each element; and when a is 12, b is 0.01-2, c is 0.01-3, d is 0.5-4, e is 0.01-3, f is 0.01-3, g is 1-20, h is 1-12, i is 0.01-2, j is 0.01-5 and k is 0-3 and l is the number of oxygen atom necessary to satisfy valence of each of said component.

摘要翻译： 本发明提供了一种在工业上有利地生产甲基丙烯醛和甲基丙烯酸的方法，其包括在具有由下式表示的组成的催化剂存在下，用含分子氧的气体对异丁烯或叔丁醇进行气相催化氧化： Mo，W，B，Fe，Sb，Cr，Si和O分别表示钼，钨，铋，铁，锑，铬，硅和氧的MoaWbBicFedSbeCrfSigAhXiYjZkOl。 A表示选自镍和钴中的至少一种元素; X表示选自钾，铷，铯和铊中的至少一种元素; Y表示选自镁，锌，锰，镉，铅和钡中的至少一种元素; Z表示选自磷，硼，硫，氯，铈，锡和钛中的至少一种元素; a，b，c，d，e，f，g，h，i，j，k和l分别表示各元素的原子比; 当a为12时，b为0.01-2，c为0.01-3，d为0.5-4，e为0.01-3，f为0.01-3，g为1-20，h为1-12，i为 0.01-2，j为0.01-5，k为0-3，l为满足各成分的价态所需的氧原子数。