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    Catalysts and process for unsaturated aldehydes
    61.
    发明授权
    Catalysts and process for unsaturated aldehydes 失效
    不饱和醛的催化剂和工艺

    公开(公告)号：US4374759A

    公开(公告)日：1983-02-22

    申请号：US327848

    申请日：1981-12-07

    申请人： Sargis Khoobiar

    发明人： Sargis Khoobiar

    IPC分类号： B01J23/887 ,  C07C45/37 ,  B01J23/82 ,  B01J21/00

    CPC分类号： B01J23/8876 ,  C07C45/37 ,  B01J2523/00

    摘要： A catalyst composition useful for the oxidation of olefins, particularly the vapor phase oxidation of isobutylene and/or tertiary butyl alcohol to produce methacrolein, consists essentially of the combination of oxides of molybdenum, cobalt, iron, bismuth, thallium, antimony, silicon, and nickel, along with one or more members of the groups consisting of the alkali metals, the alkaline earth metals, the rare earth metals including lanthanum, tungsten, and mixtures thereof. The catalyst has a BET surface area within the range of about 0.5-10 m.sup.2 /gm and preferably within the range of about 2-6 m.sup.2 /gm. Preferably, the catalyst has no more than about 3% of the surface area associated with pores smaller than about 100 A.degree.. The catalyst is heated during its preparation to a temperature above 525.degree. C., preferably above 550.degree. C., most preferably to about 600.degree. C., for a time sufficient to achieve the desired surface area and pore size distribution and thereby to improve selectivity to methacrolein.

    摘要翻译： 用于烯烃氧化的催化剂组合物，特别是异丁烯和/或叔丁醇的气相氧化以产生甲基丙烯醛，主要由钼，钴，铁，铋，铊，锑，硅和 镍，以及由碱金属，碱土金属，稀土金属，包括镧，钨及其混合物组成的一组或多种成员。 催化剂的BET表面积在约0.5-10m 2 / gm的范围内，优选在约2-6m 2 / gm的范围内。 优选地，催化剂具有不超过约小于约100A°的孔的表面积的约3％。 将催化剂在制备过程中加热至高于525℃，优选高于550℃，最优选至约600℃的温度足以实现所需表面积和孔径分布，从而改善 甲基丙烯醛的选择性。

    Process for producing methacrolein
    62.
    发明授权
    Process for producing methacrolein 失效
    生产异丁烯醛的方法

    公开(公告)号：US4250339A

    公开(公告)日：1981-02-10

    申请号：US98774

    申请日：1979-11-30

    申请人： Teruhisa Sakamoto ,  Kazuhiko Sekizawa ,  Keiichi Kihara

    发明人： Teruhisa Sakamoto ,  Kazuhiko Sekizawa ,  Keiichi Kihara

    IPC分类号： C07C47/22 ,  B01J23/00 ,  B01J23/887 ,  C07B61/00 ,  C07C45/00 ,  C07C45/35 ,  C07C45/37 ,  C07C51/235 ,  C07C51/25 ,  C07C67/00

    CPC分类号： C07C51/235 ,  B01J23/8877 ,  C07C45/35 ,  C07C45/37 ,  C07C51/25 ,  B01J2523/00

    摘要： Methacrolein is produced by a vapor phase oxidation of isobutylene or tertiary butanol in the presence of a complex oxide catalyst having the formulaMo.sub.a Co.sub.b Fe.sub.c Bi.sub.d Tl.sub.e X.sub.f Y.sub.g Z.sub.h O.sub.iwherein X represents V and/or Nb; Y represents La and/or Ce; and Z represents Cs and/or Te and a, b, c, d, e, f, g, h and i represent atomic ratios wherein a=12; b=3 to 15; c=0.4 to 5; d=0.4 to 5; e=0.01 to 2; f=0.01 to 2; g=0 to 2; h=0 to 2; and i is determined by the valences of the non-oxygen components of the catalyst and is usually in a range of 40 to 79.

    摘要翻译： 在具有式MoaCobFecBidTleXfYgZhOi的复合氧化物催化剂的存在下，通过异丁烯或叔丁醇的气相氧化制备甲基丙烯醛，其中X表示V和/或Nb; Y表示La和/或Ce; Z表示Cs和/或Te，a，b，c，d，e，f，g，h和i表示原子比，其中a = 12; b = 3〜15; c = 0.4〜5; d = 0.4〜5; e = 0.01〜2; f = 0.01〜2; g = 0〜2; h = 0〜2; i由催化剂的非氧成分的价数决定，通常为40〜79的范围。