专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明专利

IT1318682B1 未知
公开(公告)号：IT1318682B1
公开(公告)日：2003-08-27
申请号：ITMI20001884
申请日：2000-08-11
申请人： ENICHEM SPA
发明人： PAPARATTO GIUSEPPE , FORLIN ANNA , DE ALBERTI GIORDANO , D ALOISIO RINO , TEGON PAOLO
IPC分类号： B01D3/00 , C07D303/04 , B01J23/44 , C01B15/013 , C01B15/029 , C07B61/00 , C07D301/12
摘要： The present invention relates to an integrated process for the preparation in continuous of epoxides which comprises: (a) preparing an alcoholic or hydro-alcoholic solution of hydrogen peroxide in a concentration of over 3% by weight, using a gaseous stream containing hydrogen, oxygen and an inert gas, in the presence of a bimetallic catalyst based on palladium and platinum as active components; (b) putting the alcoholic or hydro-alcoholic solution of hydrogen peroxide obtained in step (a) in contact with an olefin and a buffering agent, in the presence of an epoxidation catalyst suspended in the reaction solvent, in order to obtain a reaction mixture containing the epoxide corresponding to the olefin, water and alcoholic solvent; (c) treating the alcoholic stream leaving step (b), after separation of the epoxide, in order to eliminate the nitrogenated compounds present; (d) feeding the alcoholic solvent obtained in (c) to step (a). The process may comprise a further step (e), wherein the raw hydro-alcoholic mixture of the flash column bottom, is used, when necessary, for diluting the alcoholic or hydro-alcoholic solution of hydrogen peroxide obtained in step (a) to the value required by the epoxidation plant. The process operates under high safety conditions and with a high overall efficiency, in terms of productivity and selectivity.

52. 发明专利

ITMI981843A1 未知
公开(公告)号：ITMI981843A1
公开(公告)日：2000-02-07
申请号：ITMI981843
申请日：1998-08-05
申请人： ENICHEM SPA
发明人： MEDA LAURA , ARCA VITTORIO , FURLAN PIERO , D ALOISIO RINO , DE ALBERTI GIORDANO , BUZZONI ROBERTO , PAPARATTO GIUSEPPE
IPC分类号： B01J23/38 , B01J21/18 , B01J23/40 , B01J23/44 , B01J27/02 , B01J31/02 , B01J37/02 , C01B15/029
摘要： The present invention relates to a catalyst consisting of a metal of the VIII group supported on acid activated carbon functionalized with sulfonic groups, a process for the synthesis of hydrogen peroxide from hydrogen and oxygen which uses said catalyst and the use of the hydrogen peroxide solution in oxidation processes catalyzed by titanium-silicalite.

53. 发明专利

IT1283040B1 未知
公开(公告)号：IT1283040B1
公开(公告)日：1998-04-07
申请号：ITMI961015
申请日：1996-05-21
申请人： ENICHEM SPA
发明人： BIANCHI DANIELE , BORTOLO ROSSELLA , D ALOISIO RINO , RICCI MARCO , SOATTINI SERGIO
IPC分类号： C01B15/00 , B01J31/22 , C01B15/027
摘要： A process is described for the preparation of hydrogen peroxide by the reaction of carbon monoxide, oxygen and water in an organic solvent immiscible with water, in the presence of a catalytic complex soluble in the organic solvent, deriving from the combination of a palladium salt, a non-coordinating organic or inorganic acid and a ligand capable of binding itself to the palladium atom, characterized in that said ligand is a mono or polydentate nitrogenated compound.

54. 发明专利

IT1282582B1 未知
公开(公告)号：IT1282582B1
公开(公告)日：1998-03-31
申请号：ITMI960233
申请日：1996-02-08
申请人： ENICHEM SPA
发明人： BORTOLO ROSSELLA , D ALOISIO RINO , BIANCHI DANIELE
IPC分类号： B01J31/04 , C01B15/027

55. 发明专利

ITMI932212A1 PROCEDIMENTO PER LA PRODUZIONE DI ACETONCIANIDRINA 未知
公开(公告)号：ITMI932212A1
公开(公告)日：1995-04-20
申请号：ITMI932212
申请日：1993-10-19
申请人： ENICHEM SPA
发明人： D ALOISIO RINO , DE ALBERTI GIORDANO
IPC分类号： C07C20060101

56. 发明专利

IT1318681B1 未知
公开(公告)号：IT1318681B1
公开(公告)日：2003-08-27
申请号：ITMI20001883
申请日：2000-08-11
申请人： ENICHEM SPA
发明人： PAPARATTO GIUSEPPE , FORLIN ANNA , DE ALBERTI GIORDANO , D ALOISIO RINO
IPC分类号： B01J23/44 , C01B15/029 , C07B61/00 , C07D301/12 , C07D303/04 , C07D303/08 , C07D303/14 , C07D303/32
摘要： The present invention relates to an integrated process for the preparation in continuous of epoxides which comprises: (a) preparing an alcoholic or hydro-alcoholic solution of hydrogen peroxide in a concentration of over 3% by weight, using a gaseous stream containing hydrogen, oxygen and an inert gas, in the presence of a bimetallic catalyst based on palladium and platinum as active components; (b) putting the alcoholic or hydro-alcoholic solution of hydrogen peroxide obtained in step (a) in contact with an olefin and a buffering agent, in the presence of an epoxidation catalyst suspended in the reaction solvent, in order to obtain a reaction mixture containing the epoxide corresponding to the olefin, water and the alcoholic solvent; (c) treating the alcoholic stream leaving step (b), after separation of the epoxide, in order to eliminate the nitrogenated compounds present; (d) feeding the alcoholic solvent obtained in (c) to step (a). A part of the solvent obtained in (c) can be used, when necessary, for diluting the hydro-alcoholic solution of hydrogen peroxide obtained in step (a) to the value required by the epoxidation plant. The process operates under high safety conditions and with a high overall efficiency, in terms of productivity and selectivity.

57. 发明专利

ITMI20001884A1 未知
公开(公告)号：ITMI20001884A1
公开(公告)日：2002-02-11
申请号：ITMI20001884
申请日：2000-08-11
申请人： ENICHEM SPA
发明人： D ALOISIO RINO , DE ALBERTI GIORDANO , PAPARATTO GIUSEPPE , FORLIN ANNA , TEGON PAOLO
IPC分类号： B01D3/00 , C07D303/04 , B01J23/44 , C01B15/013 , C01B15/029 , C07B61/00 , C07D301/12
摘要： The present invention relates to an integrated process for the preparation in continuous of epoxides which comprises: (a) preparing an alcoholic or hydro-alcoholic solution of hydrogen peroxide in a concentration of over 3% by weight, using a gaseous stream containing hydrogen, oxygen and an inert gas, in the presence of a bimetallic catalyst based on palladium and platinum as active components; (b) putting the alcoholic or hydro-alcoholic solution of hydrogen peroxide obtained in step (a) in contact with an olefin and a buffering agent, in the presence of an epoxidation catalyst suspended in the reaction solvent, in order to obtain a reaction mixture containing the epoxide corresponding to the olefin, water and alcoholic solvent; (c) treating the alcoholic stream leaving step (b), after separation of the epoxide, in order to eliminate the nitrogenated compounds present; (d) feeding the alcoholic solvent obtained in (c) to step (a). The process may comprise a further step (e), wherein the raw hydro-alcoholic mixture of the flash column bottom, is used, when necessary, for diluting the alcoholic or hydro-alcoholic solution of hydrogen peroxide obtained in step (a) to the value required by the epoxidation plant. The process operates under high safety conditions and with a high overall efficiency, in terms of productivity and selectivity.

58. 发明专利

BE1012987A6 PROCEDE AMELIORE POUR LA SYNTHESE DE PEROXYDE D'HYDROGENE. 未知
公开(公告)号：BE1012987A6
公开(公告)日：2001-07-03
申请号：BE9800360
申请日：1998-05-13
申请人： ENICHEM SPA
发明人： BIANCHI DANIELE , D ALOISIO RINO , ROSSELA QUERCI , MESTRONI GIOVANNI
IPC分类号： C01B15/027
摘要： Un procédé améliorè est décrit pour la synthèse de peroxyde d'hydrogène qui comprend la réaction d'oxygène, de monoxyde de carbone et d'eau dans un système biphasique constitué d'eau et d'une phase organique non miscible dans l'eau, en présence d'un complexe catalytique soluble dans la phase organique dérivant de la combinaison de: (a) un sel de palladium organique ou inorganique; (b) un ligand mono-ou polydentate azoté capable de selier lui-meme à l'atome de palladium; et (c) un acide organique non coordinant avec une lipophilie élevée; dans lequel l'amélioration consiste dans le fait que la réaction est effectuée en présence de quantités catalytiques d'une quinone ayant la formule générale (I-IV) ou de l'hydroquinone correspondante, soluble dans la phase organique du système biphasique utilisé comme milieu réaction.

59. 发明专利

ITMI20001884D0 未知
公开(公告)号：ITMI20001884D0
公开(公告)日：2000-08-11
申请号：ITMI20001884
申请日：2000-08-11
申请人： ENICHEM SPA
发明人： D ALOISIO RINO , DE ALBERTI GIORDANO , PAPARATTO GIUSEPPE , FORLIN ANNA , TEGON PAOLO
IPC分类号： B01D3/00 , C07D303/04 , B01J23/44 , C01B15/013 , C01B15/029 , C07B61/00 , C07D301/12
摘要： The present invention relates to an integrated process for the preparation in continuous of epoxides which comprises: (a) preparing an alcoholic or hydro-alcoholic solution of hydrogen peroxide in a concentration of over 3% by weight, using a gaseous stream containing hydrogen, oxygen and an inert gas, in the presence of a bimetallic catalyst based on palladium and platinum as active components; (b) putting the alcoholic or hydro-alcoholic solution of hydrogen peroxide obtained in step (a) in contact with an olefin and a buffering agent, in the presence of an epoxidation catalyst suspended in the reaction solvent, in order to obtain a reaction mixture containing the epoxide corresponding to the olefin, water and alcoholic solvent; (c) treating the alcoholic stream leaving step (b), after separation of the epoxide, in order to eliminate the nitrogenated compounds present; (d) feeding the alcoholic solvent obtained in (c) to step (a). The process may comprise a further step (e), wherein the raw hydro-alcoholic mixture of the flash column bottom, is used, when necessary, for diluting the alcoholic or hydro-alcoholic solution of hydrogen peroxide obtained in step (a) to the value required by the epoxidation plant. The process operates under high safety conditions and with a high overall efficiency, in terms of productivity and selectivity.

60. 发明专利

ES2142119T3 未知
公开(公告)号：ES2142119T3
公开(公告)日：2000-04-01
申请号：ES97106075
申请日：1997-04-14
申请人： ENICHEM SPA
发明人： BIANCHI DANIELE , BORTOLO ROSSELLA , D ALOISIO RINO , RICCI MARCO , SOATTINI SERGIO
IPC分类号： C01B15/00 , B01J31/22 , C01B15/027
摘要： A process is described for the preparation of hydrogen peroxide by the reaction of carbon monoxide, oxygen and water in an organic solvent immiscible with water, in the presence of a catalytic complex soluble in the organic solvent, deriving from the combination of a palladium salt, a non-coordinating organic or inorganic acid and a ligand capable of binding itself to the palladium atom, characterized in that said ligand is a mono or polydentate nitrogenated compound.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式