[EN] NITROGEN-CONTAINING BIOPOLYMER-BASED CATALYSTS, THEIR PREPARATION AND USES IN HYDROGENATION PROCESSES, REDUCTIVE DEHALOGENATION AND OXIDATION<br/>[FR] CATALYSEURS À BASE DE BIOPOLYMÈRES CONTENANT DE L'AZOTE, LEUR PRÉPARATION ET LEURS UTILISATIONS DANS DES PROCÉDÉS D'HYDROGÉNATION, DÉSHALOGÉNATION RÉDUCTRICE ET OXYDATION
申请人:HOFFMANN LA ROCHE
公开号:WO2018114777A1
公开(公告)日:2018-06-28
The present invention relates to a process for the preparation of a nitrogen containing biopolymer-based catalyst by pyrolysis of a metal complex with a nitrogen-containing biopolymer and to the nitrogen containing biopolymer-based catalysts obtainable by this process. In particular, the invention relates to a nitrogen containing biopolymer-based catalyst comprising metal particles and at least one nitrogen containing carbon layer. The invention also relates to the use of a nitrogen containing biopolymer-based catalyst in a hydrogenation process, preferably in a process for hydrogenation of nitroarenes, nitriles or imines; in a reductive dehalogenation process of C-X bonds, wherein X is CI, Br or I, preferably in a process for dehalogenation of organohalides or in a process for deuterium labelling of arenes via dehalogenation of organohalides; or in an oxidation process. Further, the invention relates to a metal complex with the nitrogen containing biopolymer, wherein the metal is a transition metal selected from the group consisting of manganese, ruthenium, cobalt, rhodium, nickel, palladium and platinum, preferably cobalt or nickel, and wherein the nitrogen containing biopolymer is selected from chitosan, chitin and a polyamino acid, preferably chitosan or chitin.
本发明涉及一种通过金属配合物与含氮生物聚合物的热解制备含氮生物聚合物基催化剂的方法,以及通过该方法获得的含氮生物聚合物基催化剂。具体而言,本发明涉及一种含金属颗粒和至少一层含氮碳层的含氮生物聚合物基催化剂。该发明还涉及在氢化过程中使用含氮生物聚合物基催化剂,优选在对硝基苯胺、腈或亚胺进行氢化的过程中使用;在C-X键的还原去卤化过程中使用,其中X为Cl、Br或I,优选在有机卤化物去卤化过程中使用,或者在通过有机卤化物的去卤化对芳烃进行氘标记的过程中使用;或者在氧化过程中使用。此外,本发明涉及一种与含氮生物聚合物配合的金属配合物,其中金属是锰、钌、钴、铑、镍、钯和铂中选择的过渡金属,优选钴或镍,而含氮生物聚合物选择自壳聚糖、壳聚糖和聚氨基酸,优选壳聚糖或壳聚糖。