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公开(公告)号:US4803187A
公开(公告)日:1989-02-07
申请号:US76570
申请日:1987-07-20
IPC分类号: C01B21/097 , B01J23/28 , B01J23/34 , B01J23/88 , B01J27/187 , B01J27/188 , B01J27/198 , B01J27/199 , B01J27/24 , B01J37/00 , C01B25/00 , C07B61/00 , C07C27/00 , C07C27/12 , C07C29/50 , C07C31/02 , C07C31/10 , C07C31/12 , C07C45/00 , C07C45/33 , C07C49/04 , C07C49/08 , C07C67/00 , B01J27/14
CPC分类号: B01J27/199 , B01J23/002 , B01J27/188 , C01G39/006 , C01G41/006 , C01G49/009 , C07C29/50 , C07C45/33 , B01J2523/00
摘要: Heteropolyacids or polyoxoanions promoted with azide, such as K.sub.6 PW.sub.11 VO.sub.40 N.sub.3, useful in the liquid phase oxidation of alkanes.
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公开(公告)号:US4532365A
公开(公告)日:1985-07-30
申请号:US468524
申请日:1983-02-22
申请人: Sargis Khoobiar
发明人: Sargis Khoobiar
IPC分类号: B01J27/192 , B01J27/199 , C07C5/333 , C07C45/33 , C07C45/35 , C07C45/37 , C07C51/25 , C07C45/34
CPC分类号: B01J23/002 , B01J27/192 , B01J27/199 , C07C45/33 , C07C45/35 , C07C45/37 , C07C5/3332 , C07C5/3337 , C07C51/252 , B01J2523/00
摘要: Alkanes, particularly propane and isobutane are converted to unsaturated aldehydes, particularly acrolein and methacrolein in an integrated two-step process wherein the alkane is dehydrogenated in a first step to the corresponding olefin, hydrogen, and by-products and the reaction effluent is passed directly into a second step where the olefin is oxidized to the corresponding unsaturated aldehyde without significant oxidation of the hydrogen and by-products. The aldehydes and by-products may be separated and the unreacted olefin and alkane recycled to the first step. Alternatively, the effluent from the second step may be used as feed to a further oxidation step for conversion of the unsaturated aldehyde to the corresponding unsaturated acid.
摘要翻译: 烷烃,特别是丙烷和异丁烷以一体化的两步法转化为不饱和醛,特别是丙烯醛和甲基丙烯醛,其中烷烃在第一步中脱氢成相应的烯烃,氢和副产物,反应流出物直接通过 进入第二步,其中烯烃被氧化成相应的不饱和醛而不显着氧化氢气和副产物。 可以分离醛和副产物,并将未反应的烯烃和烷烃再循环到第一步。 或者,来自第二步骤的流出物可用作进一步氧化步骤的进料,用于将不饱和醛转化为相应的不饱和酸。
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公开(公告)号:US4450291A
公开(公告)日:1984-05-22
申请号:US490636
申请日:1983-05-02
摘要: A process for the decontamination of the distillation refinement residue from the process of oxidizing cyclohexane to KA oil is provided. The process comprises washing the distillation refinement residue with the crystallization by-product obtained in crystallizing adipic acid from the product stream of the process of oxidizing the KA oil with a strong acid. This crystallization residue comprises residual amounts of the strong acid and adipic acid, as well as substantial amounts of glutaric acid and succinic acid.
摘要翻译: 提供了从氧化环己烷至KA油的方法对蒸馏精制残渣进行净化的方法。 该方法包括用从强酸将氧化KA油的方法的产物流中结晶己二酸得到的结晶副产物洗涤蒸馏精制残渣。 该结晶残渣包含残留量的强酸和己二酸,以及相当量的戊二酸和琥珀酸。
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公开(公告)号:US4302610A
公开(公告)日:1981-11-24
申请号:US153483
申请日:1980-05-27
IPC分类号: B01J23/22 , B01J23/34 , B01J23/847 , C07C27/12 , C07C29/50 , C07C45/33 , C07C45/32 , C07C49/04
CPC分类号: B01J23/22 , B01J23/34 , B01J23/847 , C07C253/26 , C07C29/50 , C07C45/33 , Y02P20/52
摘要: Compositions having a host phase of a niobate or tantalate of a divalent or trivalent metal and containing vanadium from one atom present to the limit of solid solubility in the host phase. Host phases of the rutile, columbite and trirutile structure are disclosed. The compositions are useful in the partial oxidation and ammoxidation of lower alkanes.
摘要翻译: 具有二价或三价金属的铌酸盐或钽酸盐的主体相和含有一个原子的钒的组合物存在于在主体相中固体溶解度的极限。 公开了金红石,col石和三铁结构的主体相。 该组合物可用于低级烷烃的部分氧化和氨氧化。
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公开(公告)号:US4250118A
公开(公告)日:1981-02-10
申请号:US031871
申请日:1979-04-20
CPC分类号: C07C45/33 , C07C45/002 , C07C45/82
摘要: An improved process for the preparation of cyclohexanone from benzene. Benzene is hydrogenated in a gaseous phase in a hydrogenation zone to form cyclohexane; cyclohexane is oxidized in a liquid phase to form a mixture containing cyclohexanol and cyclohexanone; and cyclohexanone is separated from this mixture and is catalytically dehydrogenated to form cyclohexanone and a hydrogen containing gas. The resulting hydrogen containing gas is introduced into a washing zone wherein it is washed with cyclohexane or benzene and the hydrogen gas thus purified is fed into the hydrogenation zone.
摘要翻译: 一种从苯制备环己酮的改进方法。 苯在氢化区中以气相氢化形成环己烷; 环己烷在液相中被氧化以形成含有环己醇和环己酮的混合物; 并从该混合物中分离出环己酮,并进行催化脱氢,形成环己酮和含氢气体。 将所得含氢气体引入洗涤区,其中用环己烷或苯洗涤,并将如此纯化的氢气进料到氢化区。
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公开(公告)号:US4064175A
公开(公告)日:1977-12-20
申请号:US729557
申请日:1976-10-04
申请人: Matthew A. McMahon
发明人: Matthew A. McMahon
CPC分类号: C07C45/36 , C07C29/48 , C07C29/50 , C07C45/33 , C07C2101/14
摘要: Chemical reactions of hydrocarbons may be selectively initiated to produce increased yield of desired products by the use of initiators typified by alkyl nitrites such as n-butyl nitrite.
摘要翻译: 可以通过使用以烷基亚硝酸盐为代表的引发剂如亚硝酸正丁酯,选择性地开始烃的化学反应以产生所需产物的增加的产率。
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公开(公告)号:US4055600A
公开(公告)日:1977-10-25
申请号:US629554
申请日:1975-11-06
IPC分类号: B01J19/18 , C01B15/024 , C07C45/33 , C07C409/04 , C07C409/14 , C07C27/12 , C07C29/00 , C07C45/02 , C07C179/02
CPC分类号: C07C409/04 , B01J19/18 , C01B15/024 , C07C407/00 , C07C409/14 , C07C45/33 , B01J2219/00159 , B01J2219/00182 , B01J2219/185 , C07C2101/14
摘要: Aliphatic or cycloaliphatic hydrocarbons (especially cyclyhexane) are oxidized in the liquid phase with an oxygen-containing gas at low conversion in a reactor comprising two contacting compartments allowing heat transfer from one to the other, the first operating at a higher pressure than the second into which the reaction mixture from the first is released so effecting cooling, partial evaporation of the excess hydrocarbon and concentration of the oxidation product.
摘要翻译: 脂肪族或脂环族烃(特别是环己烷)在液相中用含氧气体以低转化率在包含两个接触隔室的反应器中被氧化,所述接触隔室允许从一个传热到另一个,首先在比第二个更高的压力下操作 其中来自第一个的反应混合物被释放,从而实现冷却,部分蒸发过量的烃和氧化产物的浓度。
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公开(公告)号:US4038322A
公开(公告)日:1977-07-26
申请号:US655997
申请日:1976-02-06
IPC分类号: C07C29/48 , C07C29/50 , C07C29/52 , C07C45/28 , C07C45/30 , C07C45/33 , C07C67/035 , C07C45/02
摘要: Straight-chain paraffins are nondestructively and selectively oxidized to introduce oxy and oxo functions predominantly at the 2 position by an oxidizing system comprising a compound of group II - VI metals in higher valent form and an acidic activator of dissociation constant greater than 5.10.sup.-.sup.3 or boron trifluoride, with or without molecular oxygen and with or without a solvent.
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公开(公告)号:US4018827A
公开(公告)日:1977-04-19
申请号:US661285
申请日:1976-02-25
申请人: Durvasula V. Rao , Fred A. Stuber
发明人: Durvasula V. Rao , Fred A. Stuber
IPC分类号: C07C49/385 , C07C45/00 , C07C45/33 , C07C49/403 , C07C67/00
CPC分类号: C07C45/33
摘要: Cycloalkanones (C.sub.5-12) are converted to the corresponding 1,2-cycloalkanediones by autoxidation in the presence of a base catalyst (potassium t-butoxide preferred) and a polar organic solvent.
摘要翻译: 在碱催化剂(优选叔丁醇钾)和极性有机溶剂的存在下,通过自氧化将环烷酮(C5-12)转化为相应的1,2-环烷二酮。
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公开(公告)号:US3987115A
公开(公告)日:1976-10-19
申请号:US581982
申请日:1975-05-29
IPC分类号: C07C45/33 , C07C409/08 , C07C409/14 , C07C27/12 , C07C27/16
CPC分类号: C07C409/14 , C07C407/00 , C07C45/33 , C07C2101/14
摘要: Method for the production of hydroperoxides of hydrocarbons having no aliphatic or cycloaliphatic tertiary carbon atoms wherein such hydrocarbons are oxidized in the liquid phase with molecular oxygen in the presence of a tertiary alcohol and a tertiary hydroperoxide. This method gives high hydroperoxide selectivities at high conversion levels and at high conversion rates.
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