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43 条记录 (耗时 0.015 秒)

    Method for improving the performance of VPO catalysts
    15.
    发明授权
    Method for improving the performance of VPO catalysts 失效
    提高VPO催化剂性能的方法

    公开(公告)号：US5185455A

    公开(公告)日：1993-02-09

    申请号：US836434

    申请日：1992-02-18

    申请人： Jerry R. Ebner

    发明人： Jerry R. Ebner

    IPC分类号： B01J27/198 ,  B01J31/02 ,  C07C51/225 ,  C07C57/145 ,  C07D307/30 ,  C07D307/60

    CPC分类号： C07D307/30 ,  B01J23/002 ,  B01J27/198 ,  B01J31/0259 ,  B01J2231/70 ,  B01J2523/00

    摘要： An improvement in a process for the manufacture of maleic anhydride by catalytic oxidation of n-butane in the presence of trimethyl phosphate over a fixed bed vanadium phosphorus oxide catalyst in a tubular reactor. The trimethyl phosphate content of the gas entering the reactor within a range of between about (0.9) N and about (1.1) N where N is a normative concentration of trimethyl phosphate in ppm as determined by the following relationship:N+5.times.C.sub.4 +6.times.(H.sub.2 O-2.4)+0.75.times.(CONV-c)+(SV/(25.times.P.sub.in))where:C.sub.4 .times.the mole % of n-butane in the gas entering the reactor;H.sub.2 O.times.the mole % moisture in the gas entering the reactor;CONV.times.% butane conversion in the reactor;SV.times.gas hourly space velocity of the gas at the inlet of the reactor, reduced to one atmosphere pressure and 60.degree. F.;P.sub.in .times.the pressure at the inlet of the reactor (psig); andc.times.84-0.05[(SV.times.C.sub.4)/P.sub.in ];Irrespective of the computation of N, the trimethyl phosphate content is at least about 1 ppm.

    摘要翻译： 通过在磷酸三甲酯存在下，在管式反应器中的固定床钒磷氧化物催化剂上催化氧化正丁烷，制备马来酸酐的方法的改进。 进入反应器的气体的三甲基磷酸盐含量在约（0.9）N和约（1.1）N之间的范围内，其中N是磷酸三甲酯的规范浓度，单位为ppm，由以下关系式确定：N + 5×C 4 + 6× H2O-2.4）+ 0.75x（CONV-c）+（SV /（25xPin））其中：C4转入进入反应器的气体中的正丁烷摩尔％ 在进入反应器的气体中H2O2的摩尔％水分; 反应器中CONVx％丁烷转化率; 反应器入口处的气体的小时空速SV x降低至一个大气压和60°F。 压缩反应器入口处的压力（psig）; 和cx84-0.05 [（SVxC4）/ Pin]; 不考虑N的计算，磷酸三甲酯含量至少约为1ppm。

    Co-oxidation process for the production of synthetic fatty acids
    17.
    发明授权
    Co-oxidation process for the production of synthetic fatty acids 失效
    用于生产合成脂肪酸的CO氧化方法

    公开(公告)号：US3754010A

    公开(公告)日：1973-08-21

    申请号：US3754010D

    申请日：1971-05-03

    申请人： EMERY INDUSTRIES INC

    发明人： KAMMANN K

    IPC分类号： C07C51/225 ,  C07C51/25 ,  C08H17/36

    CPC分类号： C07C51/225 ,  C07C51/25

    摘要： A CO-OXIDATION PROCESS IS PROVIDED WHEREBY ALIPHATIC MONOCARBOXYLIC ACIDS ARE OBTAINED BY THE AUTOXIDATION OF PARAFFIN/OLEFIN MIXTURES IN THE PRESENCE OF A CATALYST AT ATMOSPHERIC PRESSURE. THE PROCESS PROVIDES EFFICIENT OXIDATION OF BOTH THE PARAFFIN AND THE OLEFIN AT LOW TEMPERATURES WHILE MAINTAINING ACCEPTABLE REACTION RATES AND GIVES AN IMPROVED DISTRIBUTION TO A NARROW RANGE OF PREFERRED SYNTHETIC FATTY ACIDS.