公开(公告)号：AU8762201A

公开(公告)日：2002-01-30

申请号：AU8762201

申请日：2001-07-16

Applicant: BASF AG

Inventor： BORGMEIER FRIEDER ,  TENTEN ANDREAS ,  HIBST HARTMUT ,  MULLER-ENGEL KLAUS JOACHIM ,  UNVERRICHT SIGNE ,  COX GERHARD

IPC: B01J23/00 ,  B01J23/28 ,  B01J27/057 ,  B01J37/02 ,  C07B61/00 ,  C07C45/33 ,  C07C45/35 ,  C07C51/215 ,  C07C57/05 ,  C07C51/00

Abstract: The invention relates to a method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane on a multi-metal oxide mass, said mass containing the elements Mo, V, Te and/or Sb and having a specific X-ray diffractogram.

公开(公告)号：DE19922156A1

公开(公告)日：2000-08-10

申请号：DE19922156

申请日：1999-05-12

Applicant: BASF AG

Inventor： MARTIN FRIEDRICH-GEORG ,  KOHL VERONIKA ,  COX GERHARD

IPC: B01J23/00 ,  B01J23/887 ,  B01J27/199 ,  C01G39/00 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055 ,  C01G1/02

Abstract: Multimetal oxide composition (I) comprises: (i) a multimetal oxide (II) of molybdenum with vanadium, niobium, tantalum, tungsten and/or rhenium and boron, silicon, phosphorus, germanium, arsenic and/or antimony and optionally other metal(s) or (ii) a mixture of (II) and another multimetal oxide (III), in which (I) consists of crystallites of constant composition. Multimetal oxide composition is of formula (I); (A)p(B)q (I) Mo12X aX bX cX dX eOx (II) MofX gX hOy (III) A = a multimetal oxide of formula (II); B = a multimetal oxide of formula (III); X = hydrogen, up to 97 mole-% of which may be replaced by ammonium, potassium, rubidium and/or cesium; X = vanadium, niobium (Nb), tantalum (Ta), tungsten and/or rhenium; X = boron, silicon, phosphorus, germanium, arsenic and/or antimony (Sb); X = chromium, manganese, iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), magnesium (Mg), calcium (Ca), strontium (Sr) and/or barium (Ba); X = sulfur; X = Cu, Fe, Co, Ni, Zn, cadmium, Mn, Mg, Ca, Sr and/or Ba; X = Nb, Ta and/or Sb; a = 1-3; b = 0.1-2; c = 0-5; d, e = 0-1; f = 0-2; g = 0.5-1.5; h = 2-4; x, y = values depending on the valency and frequency ox elements other than oxygen; p = 1; and q = 0; or p, q not = 0 and p/q = (160-1):1. The standard deviation of the stoichiometric coefficient a of the variable X of individual crystallites of component A is less than 0.15, especially less than 0.10. Independent claims are also included for: (a) methods of preparing the multimetal oxide (I); (b) the apparatus used in preparation.