13.
    发明专利
    未知

    公开(公告)号:DE3832628A1

    公开(公告)日:1990-03-29

    申请号:DE3832628

    申请日:1988-09-26

    Abstract: Disclosed is a method of making an active and abrasion resistant catalyst composition comprising at least 5 weight percent alumina support and at most 95 percent of a complex oxide composition having the empirical formula: VSbmAaHbCcOx, where A is one or more of W, Sn, Mo, B, P and Ge; H is one or more of Cu, Ag, Nb, Ta, Ti, Fe, Co, Ni, Cr, Pb, Mn, Zn, Se, Te, Ga, In and As; C is one or more of an alkali metal, alkaline earth metal, and rare earths; and where m is from 0.01 and up to 20; a is 0-10; b is 0-20; c is 0-20 (usually 0-1); the ratio (a+b+c):(1+m) is 0.01-6; wherein x is determined by the oxidation state of the other elements, which method comprises mixing a hydrosol or gel of boehmite with a slurry or solution containing the other batch materials containing the elements of said formula, and thereafter drying and calcining the resultant solid.

    PREPARATION OF UNSATURATED ACIDS AND ESTERS BY OXIDATIVE CONDENSATION

    公开(公告)号:CA1193613A

    公开(公告)日:1985-09-17

    申请号:CA417257

    申请日:1982-12-08

    Abstract: PREPARATION OF UNSATURATED ACIDS AND ESTERS BY OXIDATIVE CONDENSATION This invention relates to a novel vapor phase process for the production of unsaturated acids and esters, such as acrylic acid and methyl acrylate, by reacting a primary alcohol with a saturated monocarboxylic acid, ester, or anhydride in the presence of oxygen over a solid catalyst. BACKGROUND OF THE INVENTION Preparation of unsaturated acid derivitives from corresponding saturated compounds by condensation with formaldehyde is known. For example, U.S. Patent No. 3,701,798 disclosed the production of unsaturated acid derivatives through condensation with formaldehyde over catalysts containing rare earth oxides. U.S. Patent No. 3,014,958 discloses an improvement for making unsaturated esters from formaldehyde and other esters wherein the feed contains more than 7% of the desired unsaturated ester. Catalysts used in this reference are phosphates and mixed oxides. U.S. Patent No. 3,933,888, U.S. 3,578,702 and U.S. 4,165,438 all disclose reactions using formaldehyde over various oxide catalysts such as vanadium-phosphorus, metals of the lanthanide series, or metals found in Groups IIA and Group IIIA of the Periodic Table. 1.

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