Process for the production and purification of diethoxymethane by
azeotropic distillation
    52.
    发明授权
    Process for the production and purification of diethoxymethane by azeotropic distillation 失效
    通过共沸蒸馏生产和纯化二乙氧基甲烷的方法

    公开(公告)号:US4613411A

    公开(公告)日:1986-09-23

    申请号:US803199

    申请日:1985-12-02

    IPC分类号: C07C41/58 B01D3/36

    CPC分类号: C07C41/58 C07C41/56

    摘要: Diethoxymethane (ethylal), prepared by reacting formaldehyde with ethanol, may be recovered from the product mixture in substantially pure form by first distilling off an azeotrope comprising ethanol and diethoxymethane, adding a selected solvent to the azeotrope which will form an azeotrope with the ethanol, distilling off said latter azeotrope and recovering the substantially pure diethoxymethane.

    摘要翻译: 通过甲醛与乙醇反应制备的二乙氧基甲烷(乙基)可以从产物混合物中以基本上纯的形式回收,首先蒸馏出包含乙醇和二乙氧基甲烷的共沸物,向与乙醇形成共沸物的共沸物中加入选定的溶剂, 蒸馏掉后一种共沸物并回收基本上纯的二乙氧基甲烷。

    Hydroformylation catalyst and process
    53.
    发明授权
    Hydroformylation catalyst and process 失效
    加氢甲酰化催化剂和工艺

    公开(公告)号:US4542119A

    公开(公告)日:1985-09-17

    申请号:US598935

    申请日:1984-04-11

    摘要: Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rate and improved selectivity of linear aldehydes over branched aldehydes.The novel catalyst comprises an organo metallic complex formed from a mixture of:(1) platinum (II) acetylacetonate;(2) a Group IVB metal halide; and(3) a bidentate tertiary ligand of the formulaR.sub.1 R.sub.2 Q(CH.sub.2).sub.m QR.sub.3 R.sub.4 ; or ##STR1## wherein Q is arsenic, antimony, or phosphorus; and R.sub.1,R.sub.2,R.sub.3 and R.sub.4 are alkyl, alkoxyl, aryl, or aryloxyl groups, and may be the same or different; and m is an integer of from 3 to about 5; and n is an integer of from 2 to about 4.

    摘要翻译: 烯烃在新的有机金属配合物催化剂存在下用合成气进行加氢甲酰化,以高反应速率形成相应的醛,并提高线性醛与分支醛的选择性。 新型催化剂包含由以下混合物形成的有机金属络合物:(1)乙酰丙酮铂(II); (2)ⅣB族金属卤化物; 和(3)式R1R2Q(CH2)mQR3R4的二齿叔配体; 或其中Q是砷,锑或磷; 并且R 1,R 2,R 3和R 4是烷基,烷氧基,芳基或芳氧基,并且可以相同或不同; m为3〜5的整数; n为2〜4的整数。

    Catalyst for oxidation of saturated and unsaturated aldehydes to unsaturated carboxylic acid, method of making and method of using thereof
    55.
    发明申请
    Catalyst for oxidation of saturated and unsaturated aldehydes to unsaturated carboxylic acid, method of making and method of using thereof 有权
    用于将饱和和不饱和醛氧化成不饱和羧酸的催化剂,其制备方法及其使用方法

    公开(公告)号:US20080188681A1

    公开(公告)日:2008-08-07

    申请号:US11702395

    申请日:2007-02-05

    摘要: The invention is a supported or bound heteropoly acid catalyst composition, a method of making the catalyst composition and a process for the oxidation of saturated and/or unsaturated aldehydes to unsaturated carboxylic acids using the catalyst composition. The catalyst composition has a heteropoly acid component containing molybdenum, vanadium, phosphorus and cesium and support/binder having a surface area of about 0.1 m2/g to about 1.0 m2/g.The catalyst is made by dissolving compounds of the components of each of the heteropoly acid compounds in a solution, precipitating the heteropoly acid compounds, contacting the heteropoly acid compounds to form a catalyst precursor and calcining the catalyst precursor to form a heteropoly acid compound catalyst.Unsaturated aldehydes, such as methacrolein, may be oxidized in the presence of the heteropoly acid compound catalyst to produce an unsaturated carboxylic acid, such as methacrylic acid.

    摘要翻译: 本发明是负载或结合的杂多酸催化剂组合物,制备催化剂组合物的方法和使用催化剂组合物将饱和和/或不饱和醛氧化成不饱和羧酸的方法。 催化剂组合物具有包含钼,钒,磷和铯的杂多酸组分和表面积为约0.1m 2 / g至约1.0m 2的载体/粘合剂, /G。 将各种杂多酸化合物的组分的化合物溶解在溶液中,沉淀杂多酸化合物,使杂多酸化合物接触形成催化剂前体并煅烧催化剂前体以形成杂多酸化合物催化剂来制备催化剂。 不饱和醛如甲基丙烯醛可在杂多酸化合物催化剂存在下被氧化,生成不饱和羧酸,如甲基丙烯酸。

    Tetraalykylammonium polyoxoanionic oxidation catalysts
    57.
    发明授权
    Tetraalykylammonium polyoxoanionic oxidation catalysts 失效
    四亚烷基铵聚氧乙烯氧化催化剂

    公开(公告)号:US5817881A

    公开(公告)日:1998-10-06

    申请号:US902931

    申请日:1997-07-30

    摘要: Alkanes are catalytically oxidized in air or oxygen using iron-substituted polyoxoanions (POAs) of the formula: H.sub.e-z �(n-C.sub.4 H.sub.9).sub.4 N!.sub.z (XM.sub.11 M'O.sub.39).sup.-eThe M' (e.g., iron(III)/iron(II)) reduction potential of the POAs is affected by selection of the central atom X and the framework metal M, and by the number of tetrabutyl-ammonium groups. Decreased Fe(III)/Fe(II) reduction potential has been found to correlate to increased oxidation activity.

    摘要翻译: 烷烃在空气或​​氧气中使用下式的铁取代的聚氧阴离子(POA)催化氧化:He-z [(n-C4H9)4N] z(XM11M'O39)-e M'(例如铁(III)/ 铁(II))还原电位受中心原子X和骨架金属M的选择以及四丁基铵基团的数量的影响。 已经发现Fe(III)/ Fe(II)还原电位的降低与增加的氧化活性相关。

    Haloporphyrins and their preparation and use as catalysts
    59.
    发明授权
    Haloporphyrins and their preparation and use as catalysts 失效
    卤卟啉及其制备和用作催化剂

    公开(公告)号:US5663328A

    公开(公告)日:1997-09-02

    申请号:US672202

    申请日:1996-06-27

    摘要: The invention provides novel catalyst compositions, useful in the oxidation of hydrocarbons with air or oxygen to form hydroxy-group containing compounds and in the decomposition of hydroperoxides to form hydroxy-group containing compounds. The catalysts comprise transition metal complexes of a porphyrin ring having 1 to 12 halogen substituents on the porphyrin ring, at least one of said halogens being in a meso position and/or the catalyst containing no aryl group in a meso position. The compositions are prepared by halogenating a transition metal complex of a porphyrin. In one embodiment, a complex of a porphyrin with a metal whose porphyrin complexes are not active for oxidation of hydrocarbons is halogenated, thereby to obtain a haloporphyrin complex of that metal, the metal is removed from the haloporphyrin complex to obtain the free base form of the haloporphyrin, and a metal such as iron whose porphyrin complexes are active for oxidation of hydrocarbons and for the decomposition of alkyl hydroperoxides is complexed with the free base to obtain an active catalyst for oxidation of hydrocarbons and decomposition of alkyl hydroperoxides.

    摘要翻译: 本发明提供了新的催化剂组合物,其可用于用空气或氧气氧化烃以形成含羟基化合物,并在氢过氧化物的分解中形成含羟基化合物。 催化剂包括在卟啉环上具有1至12个卤素取代基的卟啉环的过渡金属络合物,所述卤素中的至少一个在中间位置和/或在中间位置不含芳基的催化剂。 通过卤化卟啉的过渡金属络合物制备组合物。 在一个实施方案中,卟啉与卟啉络合物对于烃的氧化不起作用的金属的络合物被卤化,从而获得该金属的卤卟啉络合物,从卤卟啉络合物中除去金属,得到游离碱形式 卤卟啉和卟啉配合物对烃的氧化和烷基氢过氧化物的分解具有活性的金属如铁,与游离碱络合,得到烃的氧化和烷基氢过氧化物的分解的活性催化剂。