Process for producing composite oxide catalysts
    3.
    发明授权
    Process for producing composite oxide catalysts 失效
    复合氧化物催化剂的制备方法

    公开(公告)号:US4356114A

    公开(公告)日:1982-10-26

    申请号:US262137

    申请日:1981-05-11

    摘要: In the production of a composite oxide catalyst containing at least Mo tegether with V and (or) Nb, the catalyst precursor is subjected to a thermal decomposition step in which: (1) the precursor is heated in a heat-exchanger type apparatus in which a first space accommodating the precursor and a second space through which a heating fluid flows are partitioned and separated from each other, the heating of the precursor being accomplished through the partitioning; (2) the thermal decomposition is carried out as an atmosphere gas of an oxygen concentration of 0.05 to 5 percent is caused to flow through the first space; and (3) the maximum temperature reached in the thermal decomposition is 300.degree. to 550.degree. C.

    摘要翻译: 在至少含有Mo的Mo和(或)Nb的复合氧化物催化剂的制造中,对催化剂前体进行热分解工序,其中:(1)在热交换型装置中加热前体, 容纳前体的第一空间和加热流体流过的第二空间彼此分隔和分离,前体的加热通过分隔完成; (2)当氧浓度为0.05〜5%的气氛气体通过第一空间时,进行热分解; 和(3)热分解中达到的最高温度为300〜550℃。

    Production of alkenylbenzenes
    8.
    发明授权
    Production of alkenylbenzenes 失效
    生产烯基苯

    公开(公告)号:US4551571A

    公开(公告)日:1985-11-05

    申请号:US708743

    申请日:1985-03-06

    IPC分类号: C07C5/333 C07C4/02 C07C2/64

    CPC分类号: C07C5/3332

    摘要: A method for producing an alkenylbenzene by catalytically dehydrogenating an alkylbenzene non-oxidatively in the presence of steam in the reaction zone comprising a fixed-bed of potassium-containing dehydrogenation catalyst particles, wherein the potassium-containing dehydrogenation catalyst particles are prevented from powdering by (a) using a fixed-bed comprising particles of at least two kinds of potassium-containing dehydrogenation catalyst with respectively different potassium contents and (b) arranging the catalyst particles so that those with higher potassium content are not disposed on the inlet side of said catalyst bed with respect to the reaction.

    摘要翻译: 在含有脱氢催化剂粒子的固定床的反应区域中,在蒸汽存在下,通过非蒸汽催化脱氢烷基苯的方法,其中,所述含钾脱氢催化剂粒子不被粉化( a)使用包含至少两种具有不同钾含量的含钾脱氢催化剂的颗粒的固定床,和(b)排列催化剂颗粒,使得具有较高钾含量的那些不被设置在所述催化剂的入口侧 相对于反应的床。

    Production of acrylic acid
    9.
    发明授权
    Production of acrylic acid 失效
    生产丙烯酸

    公开(公告)号:US4365087A

    公开(公告)日:1982-12-21

    申请号:US116445

    申请日:1980-01-29

    摘要: In the production of acrylic acid by a two-stage, vapor-phase catalytic oxidation of propylene, a composite oxide catalyst expressed by the formula Mo.sub.a Bi.sub.b Ni.sub.c Co.sub.d Fe.sub.e Na.sub.f Mn.sub.g B.sub.h K.sub.i Si.sub.j O.sub.x is used in the first-stage reaction, which is carried out under specific reaction and operational conditions, and the second-stage reaction is carried under specific reaction and operational conditions while oxygen is supplied by a specific mode.

    摘要翻译: 在通过丙烯的两阶段气相催化氧化生产丙烯酸的过程中,在特定反应和操作条件下进行的第一阶段反应中使用由式MoaBibNicCodFeeNafMngBhKiSijOx表示的复合氧化物催化剂, 第二阶段反应在特定反应和操作条件下进行,同时通过特定模式供给氧气。