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    Process for manufacturing dialkyl carbonate from urea and alcohol
    21.
    发明授权
    Process for manufacturing dialkyl carbonate from urea and alcohol 失效
    由尿素和醇制造碳酸二烷基酯的方法

    公开(公告)号：US5565603A

    公开(公告)日：1996-10-15

    申请号：US170468

    申请日：1993-12-20

    申请人： Ramzi Y. Saleh ,  Robert C. Michaelson ,  Elena N. Suciu ,  Barbara Kuhlmann

    发明人： Ramzi Y. Saleh ,  Robert C. Michaelson ,  Elena N. Suciu ,  Barbara Kuhlmann

    IPC分类号： B01J3/04 ,  B01J19/18 ,  B01J31/12 ,  C07C68/00 ,  C07C69/96

    CPC分类号： B01J31/122 ,  B01J19/1881 ,  B01J3/04 ,  C07C68/00 ,  B01J2219/00101 ,  B01J2219/00155 ,  B01J2219/00162

    摘要： A process for making a dialkyl carbonate which comprises reacting urea with a first alcohol in a carbamate reactor at a temperature and pressure sufficient to convert said urea to an alkyl carbamate; and reacting the alkyl carbamate with a second alcohol in the presence of a dialkyl isocyanato alkoxy tin catalyst or derivatives in a carbonate reactor at a temperature and pressure sufficient to convert the alkyl carbamate to a dialkyl carbonate, wherein the molar ratio of alkyl carbamate to second alcohol is in the range between about 2:1 to about 10:1 and wherein dialkyl carbonate is present within the carbonate reactor in an amount between about 1 to about 3 weight %, based on total alkyl carbamate and second alcohol content, and wherein the second alcohol is either the same as or different from the first alcohol or a mixture of alcohols.

    摘要翻译： 一种制备碳酸二烷基酯的方法，其包括使氨基甲酸酯反应器中的脲与第一醇在足以将所述脲转化为氨基甲酸烷基酯的温度和压力下反应; 和在碳酸酯反应器中的二烷基异氰酸酯基烷氧基锡催化剂或其衍生物的存在下，使烷基氨基甲酸酯与第二种醇反应，其温度和压力足以将氨基甲酸烷基酯转化为碳酸二烷基酯，其中氨基甲酸烷基酯与第二 醇在约2:1至约10:1之间的范围内，其中碳酸二烷基酯在碳酸酯反应器内以基于总烷基氨基甲酸酯和第二醇含量为约1至约3重量％的量存在，并且其中 第二醇与第一种醇或醇的混合物相同或不同。

    Dialkyl isocyanato tin alcoholate catalysts and dimers thereof
    22.
    发明授权
    Dialkyl isocyanato tin alcoholate catalysts and dimers thereof 失效
    二烷基异氰酸锡锡醇盐催化剂及其二聚体

    公开(公告)号：US5561094A

    公开(公告)日：1996-10-01

    申请号：US429057

    申请日：1995-04-26

    申请人： Ramzi Y. Saleh ,  Robert C. Michaelson ,  Elena N. Suciu ,  Barbara Kuhlmann

    发明人： Ramzi Y. Saleh ,  Robert C. Michaelson ,  Elena N. Suciu ,  Barbara Kuhlmann

    IPC分类号： B01J3/04 ,  B01J19/18 ,  B01J31/12 ,  C07C68/00 ,  B01J31/18

    CPC分类号： B01J31/122 ,  B01J19/1881 ,  B01J3/04 ,  C07C68/00 ,  B01J2219/00101 ,  B01J2219/00155 ,  B01J2219/00162

    摘要： A process for making a dialkyl carbonate which comprises reacting urea with a first alcohol in a carbamate reactor at a temperature and pressure sufficient to convert said urea to an alkyl carbamate; and reacting the alkyl carbamate with a second alcohol in the presence of a dialkyl isocyanato alkoxy tin catalyst or derivatives in a carbonate reactor at a temperature and pressure sufficient to convert the alkyl carbamate to a dialkyl carbonate, wherein the molar ratio of alkyl carbamate to second alcohol is in the range between about 2:1 to about 10:1 and wherein dialkyl carbonate is present within the carbonate reactor in an amount between about 1 to about 3 weight %, based on total alkyl carbamate and second alcohol content, and wherein the second alcohol is either the same as or different from the first alcohol or a mixture of alcohols.

    摘要翻译： 一种制备碳酸二烷基酯的方法，其包括使氨基甲酸酯反应器中的脲与第一醇在足以将所述脲转化为氨基甲酸烷基酯的温度和压力下反应; 和在碳酸酯反应器中的二烷基异氰酸酯基烷氧基锡催化剂或其衍生物的存在下，使烷基氨基甲酸酯与第二种醇反应，其温度和压力足以将氨基甲酸烷基酯转化为碳酸二烷基酯，其中氨基甲酸烷基酯与第二 醇在约2:1至约10:1之间的范围内，其中碳酸二烷基酯在碳酸酯反应器内以基于总烷基氨基甲酸酯和第二醇含量为约1至约3重量％的量存在，并且其中 第二醇与第一种醇或醇的混合物相同或不同。

    Catalyst comprising amorphous NiO on silica/alumina support and process for butene dimerization
    24.
    发明授权
    Catalyst comprising amorphous NiO on silica/alumina support and process for butene dimerization 失效
    包含在二氧化硅/氧化铝载体上的无定形NiO的催化剂和用于丁烯二聚的方法

    公开(公告)号：US5254783A

    公开(公告)日：1993-10-19

    申请号：US938094

    申请日：1992-08-31

    申请人： Ramzi Y. Saleh ,  Stuart L. Soled ,  Nicholas C. Dispenziere

    发明人： Ramzi Y. Saleh ,  Stuart L. Soled ,  Nicholas C. Dispenziere

    IPC分类号： B01J23/755 ,  B01J37/02 ,  B01J37/03 ,  C07C2/04

    CPC分类号： B01J23/755 ,  B01J37/0217 ,  B01J37/031

    摘要： The present invention provides for a catalyst composition which is effective for use in the production of dimer products and higher olefin products from lower olefins such as propylene and butene in high yields and with an average degree of branching in the dimer products of less than about 1.6 methyl groups per molecule, generally in the range of from about 1.0 to 1.4 methyl groups per molecule. The present invention also provides a process for producing such dimer and higher olefin products using the catalyst composition of this invention. The catalyst of the invention comprises an amorphous nickel oxide (NiO) present as a disperse substantial monolayer on the surfaces of a silica (SiO.sub.2) support, which support also contains minor amounts of an oxide of aluminum, gallium or indium such that the ratio of NiO to metal oxide present in the catalyst is within the range of from about 4:1 to about 100:1. The catalyst may be prepared by precipitating a water insoluble nickel salt onto the surfaces of a silica support which has been impregnated with the metal oxide or onto a silica-alumina support which has been dealuminized such that the resulting nickel oxide/alumina ratio will fall within the ranges set forth above. The catalyst may then be activated by calcination in the presence of oxygen at a temperature within the range of from about 500.degree. to 700.degree. C.

    摘要翻译： 本发明提供了一种催化剂组合物，其有效用于以高产率从低级烯烃如丙烯和丁烯生产二烯体产物和高级烯烃产物，并且二聚体产物中的平均支化度小于约1.6 每个分子的甲基基团，通常在每分子约1.0至1.4个甲基的范围内。 本发明还提供了使用本发明的催化剂组合物生产这种二聚物和较高级烯烃产物的方法。 本发明的催化剂包括在二氧化硅（SiO 2）载体的表面上作为分散实质单层存在的无定形氧化镍（NiO），该载体还含有少量的铝，镓或铟的氧化物， 存在于催化剂中的NiO与金属氧化物在约4:1至约100:1的范围内。 催化剂可以通过将水不溶性镍盐沉淀到已经浸渍有金属氧化物的二氧化硅载体的表面上或已经脱铝的二氧化硅 - 氧化铝载体上，使得所得到的氧化镍/氧化铝比落入 上述范围。 催化剂然后可以在氧的存在下在约500-700℃的温度下煅烧来活化。

    Catalyst comprising TiO.sub.2 dispersed phase on a monolayer of SiO.sub.2 on alumina support
    25.
    发明授权
    Catalyst comprising TiO.sub.2 dispersed phase on a monolayer of SiO.sub.2 on alumina support 失效
    包含TiO 2分散相的催化剂在氧化铝载体上的SiO 2单层上

    公开(公告)号：US5073658A

    公开(公告)日：1991-12-17

    申请号：US644959

    申请日：1991-01-22

    申请人： Ramzi Y. Saleh ,  Stuart L. Soled ,  Nicholas C. Dispenziere

    发明人： Ramzi Y. Saleh ,  Stuart L. Soled ,  Nicholas C. Dispenziere

    IPC分类号： B01J21/12 ,  B01J23/08 ,  B01J37/08 ,  C07C2/10

    CPC分类号： B01J37/086 ,  B01J21/12 ,  B01J23/08 ,  C07C2/10 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2521/08 ,  C07C2523/08

    摘要： The present invention provides for a non-nickel-containing catalyst which is effective for use in the production of dimer products and higher olefin products from a butene starting material at relatively high conversion, good selectivity towards octene production and good activity maintenance over prolonged polymerization times. The catalyst is prepared by impregnating an amorphous trivalent metal oxide support selected from the group consisting of aluminum oxide, gallium oxide and indium oxide with a silicon-containing precursor compound which, after calcination, yields a substantial mono layer of SiO.sub.2 on the surface of the metal oxide support. A disperse layer of TiO.sub.2 is then deposited on the surface of the SiO.sub.2 monolayer by application of a solvent solution of a precursor compound containing titanium onto the SiO.sub.2 monolayer, followed by calcination to reduce the precursor titanium compound to TiO.sub.2.

    摘要翻译： 本发明提供一种非镍的催化剂，其有效用于从相对较高转化率的丁烯原料生产二聚体产物和较高级烯烃产物，对于辛烯生产具有良好的选择性，并且在延长的聚合时间内具有良好的活性维持 。 催化剂是通过将选自氧化铝，氧化镓和氧化铟的无定形三价金属氧化物载体与含硅前体化合物浸渍制备的，其在煅烧后在其表面上产生基本的单层SiO 2 金属氧化物载体。 然后通过将含有钛的前体化合物的溶剂溶液施加到SiO 2单层上，然后将TiO 2的分散层沉积在SiO 2单层的表面上，随后煅烧以将前体钛化合物还原成TiO 2。

    Process for preparing catalysts for preparation of aromatic carboxylic anhydrides
    26.
    发明授权
    Process for preparing catalysts for preparation of aromatic carboxylic anhydrides 失效
    制备芳族羧酸酐的催化剂的方法

    公开(公告)号：US4814317A

    公开(公告)日：1989-03-21

    申请号：US102164

    申请日：1987-09-29

    申请人： Ramzi Y. Saleh ,  Israel E. Wachs

    发明人： Ramzi Y. Saleh ,  Israel E. Wachs

    IPC分类号： B01J23/22 ,  C07C51/215 ,  C07C51/25 ,  C07C51/265 ,  C07C51/31 ,  B01J21/06

    CPC分类号： C07C51/313 ,  B01J23/22 ,  C07C51/215 ,  C07C51/25 ,  C07C51/252 ,  C07C51/265

    摘要： In accordance with the process of this invention, an improved catalyst for molecular oxidation of an aromatic hydrocarbon to form the corresponding aromatic carboxylic anhydrides is prepared by the steps of forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form a continuous monolayer amount of at least one source of zirconium dioxide, calcining the thus-formed catalyst precursor under conditions sufficient to convert the zirconium oxide source into the oxide form, depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium compound which is convertible into vanadium oxide upon heating and calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.

    摘要翻译： 根据本发明的方法，通过以下步骤制备用于分子氧化芳族烃以形成相应的芳族羧酸酐的改进的催化剂：通过以锐钛矿形式的二氧化钛固体沉积形成连续单层量形成催化剂前体 的至少一种二氧化锆源，在足以将氧化锆源转化为氧化物形式的条件下煅烧由此形成的催化剂前体，在煅烧的催化剂前体上沉积催化有效量的至少一种钒化合物，其可转化为 氧化钒加热并在足以将钒化合物转化为氧化钒的条件下煅烧钒沉积固体。