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公开(公告)号：US5543548A
公开(公告)日：1996-08-06
申请号：US273548
申请日：1994-07-11
IPC分类号： C07B61/00 , C07C31/04 , C07C68/00 , C07C68/08 , C07C69/96 , C07C201/04 , C07C203/00
CPC分类号： C07C68/00
摘要： Dimethyl carbonate (DMC) is prepared by continuous gas reaction of carbon monoxide and methyl nitrite a heterogeneous catalyst comprising a platinum at 50.degree. to 170.degree. C. under 1 to 5 bar.
摘要翻译： 通过一氧化碳和亚硝酸甲酯的连续气相反应制备碳酸二甲酯（DMC），该催化剂在1至5巴下在50至170℃下包含铂。
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公开(公告)号：US5319124A
公开(公告)日：1994-06-07
申请号：US023303
申请日：1993-02-26
CPC分类号： C07C68/00 , Y02P20/582
摘要： Dialkyl carbonates can be prepared by the reaction of carbon monoxide with alkyl nitrites in a continuous gas phase reaction, using a platinum metal catalyst on an amorphous alumosilicate having a content of 30-80 atom% Al, based on the sum of Al and Si, as a support, which catalyst may optionally comprise additional material of a compound of antimony, bismuth, aluminium, copper, vanadium, niobium, tantalum, tin, iron, cobalt, nickel or a mixture of a plurality of these, and hydrogen halide being added in the course of the reaction intermittently or continuously. In this reaction, the dialkyl carbonates are formed with almost quantitative selectivity; the corresponding dialkyl oxalates cannot be detected in most cases.
摘要翻译： 碳酸二烷基酯可以通过一氧化碳与亚硝酸烷基酯在连续气相反应中的反应来制备，使用铂金属催化剂，其含量为30-80原子％Al的无定形铝硅酸盐，基于Al和Si的总和， 作为载体，该催化剂可以任选地包含锑，铋，铝，铜，钒，铌，钽，锡，铁，钴，镍或其中多个的混合物和添加的卤化氢的化合物的附加材料 在反应过程中间歇或连续。 在该反应中，以几乎定量的选择性形成碳酸二烷基酯; 在大多数情况下不能检测到相应的草酸二烷基酯。
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公开(公告)号：US5476959A
公开(公告)日：1995-12-19
申请号：US272164
申请日：1994-07-08
申请人： Konrad Hable , Alexander Klausener , Zoltan Kricsfalussy , Heinz Landscheidt , Erich Wolters , Eberhard Zirngiebl
发明人： Konrad Hable , Alexander Klausener , Zoltan Kricsfalussy , Heinz Landscheidt , Erich Wolters , Eberhard Zirngiebl
CPC分类号： C07C68/00
摘要： Dialkyl carbonates can be prepared by reacting carbon monoxide with alkyl nitrites in a continuous gas phase reaction in the presence of a heterogeneous platinum metal catalyst, the activity of this catalyst being maintained by the addition of small amounts of halogen. The dialkyl carbonates are thus formed with almost quantitative selectivity and no deactivation of the catalyst occurs.
摘要翻译： 碳酸二烷基酯可以通过在多相铂金属催化剂的存在下在连续气相反应中使一氧化碳与亚硝酸烷基酯反应制备，该催化剂的活性通过加入少量的卤素来维持。 因此，碳酸二烷基酯以几乎定量的选择性形成，并且不会发生催化剂失活。
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公开(公告)号：US5498744A
公开(公告)日：1996-03-12
申请号：US273547
申请日：1994-07-11
申请人： Joerg-Dietrich Jentsch , Alexander Klausener , Heinz Landscheidt , Bernd Lenders , Bernd Pennemann , Erich Wolters , Eberhard Zirngbiebl
发明人： Joerg-Dietrich Jentsch , Alexander Klausener , Heinz Landscheidt , Bernd Lenders , Bernd Pennemann , Erich Wolters , Eberhard Zirngbiebl
CPC分类号： C07C68/00
摘要： Dimethyl carbonate is obtained with a high selectivity and great constancy over time by reacting carbon monoxide with methyl nitrite in a continuous gas phase reaction in the presence of a heterogeneous catalyst prepared by the application to a suitable support of one or more palladium compounds of the formula[Pd(N(R.sup.1, R.sup.2, R.sup.3)).sub.n ]X.sup.1.sub.2 (I) ,wherein R.sup.1, R.sup.2, R.sup.3, X.sup.1 and n are as defined in the disclosure, optionally in combination with one or more promoters from the group consisting of the elements Fe, Co, Ni, V, Nb, Mo, Ta, Ti, Cu and Cr, the rare earths and/or compounds thereof, and/or with one or more promoters from the group consisting of alkali metal and alkaline earth metal halides.
摘要翻译： 通过使一氧化碳与亚硝酸甲酯在连续气相反应中在存在非均相催化剂存在下反应获得碳酸二甲酯，所述非均相催化剂通过适用于一种或多种式 [Pd（N（R 1，R 2，R 3））n] X 12（I）其中R 1，R 2，R 3，X 1和n如本公开所定义，任选与一个或多个来自 元素Fe，Co，Ni，V，Nb，Mo，Ta，Ti，Cu和Cr，稀土和/或其化合物，和/或与一种或多种来自碱金属和碱土金属卤化物 。
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公开(公告)号：US5360922A
公开(公告)日：1994-11-01
申请号：US23302
申请日：1993-02-26
IPC分类号： B01J29/064 , C07C68/00 , C07C69/96
CPC分类号： B01J29/064 , C07C68/00 , Y02P20/582
摘要： Dialkyl carbonates can be prepared by the reaction of carbon monoxide with alkyl nitrites in a continuous gas phase reaction, using a platinum group metal catalyst on an alumosilicate zeolite having acidic centers, preferably in the H.sup.+ form, as a support, which catalyst may optionally comprise additional material of a compound of antimony, bismuth, aluminum, copper, vanadium, niobium, tantalum, tin, iron, cobalt, nickel or a mixture of a plurality of these, and hydrogen halide being added in the course of the reaction intermittently or continuously. In this reaction, the dialkyl carbonates are formed with almost quantitative selectivity; the corresponding dialkyl oxalates cannot be detected in most cases.
摘要翻译： 碳酸二烷基酯可以通过在连续气相反应中使用一氧化碳与烷基亚硝酸盐的反应来制备，使用铂族金属催化剂在具有酸性中心的铝硅酸盐沸石，优选以H +形式作为载体，该催化剂可任选地包含 锑，铋，铝，铜，钒，铌，钽，锡，铁，钴，镍或它们中的多种的混合物的化合物的附加材料和在反应过程中间歇或连续地加入的卤化氢 。 在该反应中，以几乎定量的选择性形成碳酸二烷基酯; 在大多数情况下不能检测到相应的草酸二烷基酯。
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公开(公告)号：US5288894A
公开(公告)日：1994-02-22
申请号：US958853
申请日：1992-10-08
CPC分类号： C07C68/00 , Y02P20/582
摘要： Dialkyl carbonates can be prepared by reaction of carbon monoxide with alkyl nitrites in a continuous gas phase reaction, in which a platinum metal catalyst of oxidic or hydroxidic compounds of elements from group Vb of the Periodic Table (Mendeleev) as supports and, if desired, addition of an antimony, bismuth, aluminium, copper, vanadium, niobium, tantalum, tin, iron, cobalt, nickel compound or a mixture of a plurality thereof on this catalyst are used, and the hydrogen halide which is discharged from the reactor together with the reaction mixture is batchwise or continuously replaced in the course of the reaction. This results in the formation of dialkyl carbonates in almost quantitative selectivity; the corresponding dialkyl oxalates can, in most cases, not be detected.
摘要翻译： 碳酸二烷基酯可以通过一氧化碳与亚硝酸烷基酯在连续气相反应中的反应来制备，其中将元素周期表（Mendeleev）中元素的氧化或氢化化合物的铂金属催化剂作为载体，如果需要， 使用在该催化剂上添加锑，铋，铝，铜，钒，铌，钽，锡，铁，钴，镍化合物或其多种混合物，将从反应器排出的卤化氢与 反应混合物在反应过程中间歇或连续替代。 这导致几乎定量选择性形成碳酸二烷基酯; 在大多数情况下，相应的草酸二烷基酯可以不被检测。
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公开(公告)号：US5414104A
公开(公告)日：1995-05-09
申请号：US231607
申请日：1994-04-22
申请人： Joerg-Dietrich Jentsch , Alexander Klausener , Heinz Landscheidt , Erich Wolters , Eberhard Zirngiebl
发明人： Joerg-Dietrich Jentsch , Alexander Klausener , Heinz Landscheidt , Erich Wolters , Eberhard Zirngiebl
IPC分类号： B01J27/185 , C07B61/00 , C07C68/00 , C07C69/96
CPC分类号： C07C68/00 , Y02P20/582
摘要： Dialkyl carbonates can be prepared by reaction of carbon monoxide with alkyl nitrites in a continuous gas-phase reaction using a platinum metal catalyst on a metal phosphate support and adding hydrogen halide stepwise or continuously during the course of the reaction in almost quantitative selectivity; the corresponding dialkyl oxalates are formed in such small amounts that in most cases they cannot be detected.
摘要翻译： 碳酸二烷基酯可以通过使用铂金属催化剂在金属磷酸盐载体上的连续气相反应中的一氧化碳与烷基亚硝酸盐反应来制备，并且在反应过程中以几乎定量的选择性逐步或连续地加入卤化氢; 相应的草酸二烷基酯形成量很少，在大多数情况下它们不能检测到。
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公开(公告)号：US5231213A
公开(公告)日：1993-07-27
申请号：US910475
申请日：1992-07-08
CPC分类号： C07C68/00 , Y02P20/582
摘要： Dialkyl carbonates can be prepared by reaction of carbon monoxide with alkyl nitrites in continuous gas phase reaction, in which a platinum metal halide catalyst on aluminum oxides, aluminum oxide hydrates or aluminum hydroxides as support and, if desired, an additive comprising an antimony, bismuth, aluminum, copper, vanadium, niobium, tantalum, tin, iron, cobalt, nickel compound or a mixture of a plurality thereof on this catalyst are used and hydrogen halide is replaced during the course of the reaction batchwise or continuously in at least the amount which is discharged from the reactor together with the reaction mixture. This results in the formation of dialkyl carbonates in almost quantitative selectivity, while the corresponding dialkyl oxalates can not in most cases be detected. The abovementioned supports are characterized by a BET surface area of more than 1 m.sup.2 /g.
摘要翻译： 碳酸二烷基酯可以通过在连续气相反应中一氧化碳与亚硝酸烷基酯的反应来制备，其中在氧化铝上的铂金属卤化物催化剂，作为载体的氧化铝水合物或氢氧化铝，以及如果需要，包含锑，铋 在该催化剂上使用铝，铜，钒，铌，钽，锡，铁，钴，镍化合物或其多种混合物，并且在反应过程中间歇或连续地以至少量的量替换卤化氢 其与反应混合物一起从反应器排出。 这导致几乎定量选择性形成碳酸二烷基酯，而在大多数情况下相应的草酸二烷基酯不能被检测到。 上述载体的特征在于BET表面积大于1m 2 / g。
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公开(公告)号：US5744663A
公开(公告)日：1998-04-28
申请号：US676027
申请日：1996-07-05
CPC分类号： C07C17/08
摘要： It has been found that cyclopentene and hydrogen bromide can be continuously reacted in a simple manner to give cyclopentyl bromide in good yields and good selectivities if the reaction is carried out in the presence of a heterogeneous catalyst. The reaction can be carried out continuously and unreacted cyclopentene and possibly other constituents can be recirculated to the reaction.
摘要翻译： 已经发现，如果反应在非均相催化剂存在下进行，环戊烯和溴化氢可以以简单的方式连续反应得到环戊基溴，产率高，选择性好。 反应可以连续进行，未反应的环戊烯和可能的其它组分可以再循环到反应中。
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公开(公告)号：US5412147A
公开(公告)日：1995-05-02
申请号：US157779
申请日：1993-11-24
IPC分类号： C07C201/04 , C07C203/00
CPC分类号： C07C201/04
摘要： C.sub.1 -C.sub.6 -Alkyl nitrites can be prepared by reacting nitrogen dioxide with C.sub.1 -C.sub.6 -alcohols, by, in a counterflow-operated column, feeding the alcohol or an alcohol/water mixture into the upper part of the column and the nitrogen dioxide or a nitrogen dioxide/inert gas mixture into the lower part of the column. The resulting alkyl nitrite is removed from the column as the top product and the co-formed nitric acid is removed from the column as the bottom product.
摘要翻译： C 1 -C 6烷基亚硝酸盐可以通过使二氧化氮与C 1 -C 6醇反应来制备，在逆流操作的塔中，将醇或醇/水混合物进料到塔的上部和二氧化氮或 二氧化氮/惰性气体混合物进入塔的下部。 所得到的亚硝酸烷基酯作为顶部产物从塔中除去，共同形成的硝酸作为底部产物从塔中除去。
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