Oxidative removal of aqueous metal-complexed cyanide under acidic
conditions
    21.
    发明授权
    Oxidative removal of aqueous metal-complexed cyanide under acidic conditions 失效
    在酸性条件下氧化除去金属络合的氰化物水溶液

    公开(公告)号:US5376285A

    公开(公告)日:1994-12-27

    申请号:US150294

    申请日:1993-11-12

    Abstract: The oxidation of metal-complexed cyanide under acid conditions using oxygen as the oxidizing agent can be performed effectively with certain metal chelates as catalysts. Especially effective chelates are metal phthalocyanines, particularly where the metal is vanadium or a member of the iron group metals. The oxidation can be effected homogeneously using water soluble metal chelates, or can be performed heterogeneously, especially in a continuous fashion using a packed bed reactor, by using suitable water-insoluble metal chelates, especially when supported on appropriate carriers.

    Abstract translation: 使用氧作为氧化剂的酸性条件下金属络合的氰化物的氧化可以用某些金属螯合物作为催化剂有效地进行。 特别有效的螯合物是金属酞菁,特别是金属是钒或铁族金属成分时。 可以使用水溶性金属螯合物均匀地进行氧化,或者通过使用合适的水不溶性金属螯合物,特别是当在适当的载体上负载时,可以使用填充床反应器,特别是以连续的方式进行非均匀地进行氧化。

    Selective, high purity preparation of N-monoalkyl alkylenediamines
    22.
    发明授权
    Selective, high purity preparation of N-monoalkyl alkylenediamines 失效
    选择性,高纯度制备N-单烷基亚烷基二胺

    公开(公告)号:US5225597A

    公开(公告)日:1993-07-06

    申请号:US852361

    申请日:1992-03-13

    Applicant: Paul R. Kurek

    Inventor: Paul R. Kurek

    CPC classification number: C07C209/60 C07C211/35

    Abstract: A continuous method of preparing N-monoalkyl alkylenediamines, uncontaminated by the N,N'-dialkyl alkylenediamine, is based on the observation that the disubstituted material selectively precipitates from aqueous media. A scheme is presented where an aqueous alkylenediamine is reacted with a suitable carbonyl component and hydrogen over a supported platinum catalyst. Where the alkylenediamine forms an azeotrope with water it can be conveniently recycled to the reactor.

    Abstract translation: 通过N,N'-二烷基亚烷基二胺不污染的制备N-单烷基亚烷基二胺的连续方法是基于二取代的材料从水性介质中选择性沉淀的观察。 提出了一种方案,其中亚烷基二胺与合适的羰基组分和氢气在负载的铂催化剂上反应。 当亚烷基二胺与水形成共沸物时,其可以方便地再循环到反应器中。

    Alkylation of diarylamines with olefins using rare earth modified
pillared clays
    23.
    发明授权
    Alkylation of diarylamines with olefins using rare earth modified pillared clays 失效
    使用稀土改性柱状粘土使烯烃与二芳基胺烷基化

    公开(公告)号:US5214211A

    公开(公告)日:1993-05-25

    申请号:US805747

    申请日:1991-12-12

    CPC classification number: C07C209/68

    Abstract: Rare earth pillared clays, and especially cerium and lanthanum aluminum chlorohydrite pillared clays, are quite effective catalysts in the alkylation of diaryl amines at temperatures in the range of 100.degree.-225.degree. C. The catalysts effect alkylation using olefins as the alkylating agent with high conversion and with minimal cracking of either the olefin or the alkylated product. Catalysts may be regenerated by heating in air at temperatures of at least about 550.degree.-600.degree. C. Water in small amounts also modifies the reaction to further reduce cracking although it also reduces the activity of the catalyst.

    Abstract translation: 稀土柱状粘土,特别是铈和镧铝氯铝石柱状粘土,在二氧化碳烷基化的温度范围为100-225℃时是非常有效的催化剂。催化剂使用烯烃作为烷基化剂,具有高的烷基化作用 转化和烯烃或烷基化产物的最小裂化。 催化剂可以通过在空气中在至少约550-600℃的温度下加热而再生。少量的水也改变了反应以进一步减少裂化,尽管它也降低了催化剂的活性。

    Acylation of aromatic compounds by acid anhydrides using solid acid
catalysts
    24.
    发明授权
    Acylation of aromatic compounds by acid anhydrides using solid acid catalysts 失效
    使用固体酸催化剂通过酸酐酰化芳族化合物

    公开(公告)号:US5126489A

    公开(公告)日:1992-06-30

    申请号:US696385

    申请日:1991-05-06

    Applicant: Paul R. Kurek

    Inventor: Paul R. Kurek

    CPC classification number: C07C45/46 C07C201/12 C07C2101/14

    Abstract: Acylatable aromatic hydrocarbons may be acylated with a broad variety of carboxylic acid anhydrides in the presence of solid acid catalysts which replace conventional Friedel-Crafts catalysts to afford aromatic ketones in good yield and with high selectivity. Both aromatic and aliphatic carboxylic acid anhydrides may be used as the acylating agent, and solid acid catalysts such as the sulfated oxides of zirconia, pillared clays, and rare earth-exchanged pillared clays are found to be quite effective in the practice of this invention. The process may be practiced in a continuous mode, especially where excess aromatic compound is used as a reactant and is recycled from the product effluent to the reaction zone containing a bed of catalyst.

    Abstract translation: 在固体酸催化剂的存在下,可酰化芳族芳族烃可以用多种羧酸酐进行酰化,取代常规的Friedel-Crafts催化剂,从而以良好的产率和高选择性得到芳族酮。 可以使用芳族和脂族羧酸酐作为酰化剂,并且发现固体酸催化剂如氧化锆的硫酸化氧化物,柱状粘土和稀土交换的柱状粘土在本发明的实践中是非常有效的。 该方法可以以连续模式实施,特别是当使用过量芳族化合物作为反应物并且从产物流出物循环到含有催化剂床的反应区时。

    Preparation of alkyl aryl ethers
    25.
    发明授权
    Preparation of alkyl aryl ethers 失效
    烷基芳基醚的制备

    公开(公告)号:US4447652A

    公开(公告)日:1984-05-08

    申请号:US380808

    申请日:1982-05-21

    Applicant: Paul R. Kurek

    Inventor: Paul R. Kurek

    CPC classification number: C07C41/06

    Abstract: Alkyl aryl ethers may be prepared in good yields by reacting a phenol with an olefin in the presence of an unmodified cationic exchange resin bearing sulfonic acid groups at low temperature. In another variation the ethers may be prepared by using as a catalyst the aforementioned resin where from about 10 to about 90 percent of the sulfonic acid groups are in the form of their alkali metal salts and the reaction temperature is greater than about 75.degree. C.

    Abstract translation: 烷基芳基醚可以通过在低温下在未改性的带有磺酸基团的阳离子交换树脂的存在下使苯酚与烯烃反应而以良好的收率制备。 在另一个实施方案中,醚可以通过使用上述树脂作为催化剂制备,其中约10至约90%的磺酸基以其碱金属盐的形式,并且反应温度大于约75℃。

    Preparation of C-nitrosodiarylamines from diarylamines
    26.
    发明授权
    Preparation of C-nitrosodiarylamines from diarylamines 失效
    由二芳基胺制备C-亚硝基二芳基胺

    公开(公告)号:US4362893A

    公开(公告)日:1982-12-07

    申请号:US270037

    申请日:1981-06-03

    Applicant: Paul R. Kurek

    Inventor: Paul R. Kurek

    CPC classification number: C07C201/00

    Abstract: C-Nitrosodiarylamines may be prepared in a single stage from diarylamines by adding alcoholic solutions of a hydrogen halide below the surface of a stirred mixture of the diphenylamine in an organic liquid containing water. The amount of water contained is critical, and amounts from about 1 to about 3 g per mole of diarylamine are preferred.

    Abstract translation: C亚硝基二芳基胺可以通过在二苯胺在含水的有机液体的搅拌的混合物的表面下面加入卤化氢的醇溶液,从二芳基胺在单一阶段中制备。 所含的水的量是关键的,优选约1至约3克/摩尔二芳基胺的量。

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