公开(公告)号：US20210163385A1

公开(公告)日：2021-06-03

申请号：US17044906

申请日：2019-04-04

申请人： ALMA MATER STUDIORUM - UNIVERSITA' DI BOLOGNA

发明人： Fabrizio CAVANI ,  Valerio ZANOTTI ,  Rita MAZZONI ,  Carlo LUCARELLI ,  Cristiana CESARI ,  Tommaso TABANELLI ,  Francesco PUZZO

IPC分类号： C07C29/34 ,  C07C29/94 ,  B01J31/22 ,  B01J31/20

摘要： A process for obtaining higher aliphatic alcohols starting from aliphatic primary alcohols by condensation reactions is disclosed. Specifically, the process comprises a step in which an aliphatic primary alcohol is contacted in a homogeneous phase with a catalyst mixture comprising a transition metal, a base and an additive; specifically, this additive can be selected from the classes of compounds of the isoquinolines N-oxide, quinolines N-oxide, pyridines N-oxide, benzoquinones, naphthoquinones, or TEMPO. In particular, the process can be carried out by contacting said aliphatic primary alcohol with a catalyst of a recycled transition metal, with a freshly added base and with a recycled additive of the aforementioned type.

公开(公告)号：US20190382361A1

公开(公告)日：2019-12-19

申请号：US16085530

申请日：2017-03-16

申请人： UNIVERSITÉ DE LILLE ,  ECOLE CENTRALE DE LILLE ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  ALMA MATER STUDIORUM - UNIVERSITA' DI BOLOGNA

发明人： Sébastien PAUL ,  Francesco SANTARELLI ,  Robert WOJCIESZAK ,  Franck DUMEIGNIL ,  Fabrizio CAVANI

IPC分类号： C07D307/68 ,  B01J23/52 ,  B01J21/06 ,  B01J21/02 ,  B01J35/00 ,  B01J35/10

摘要： A method is for the preparation of furoic acid or of one of its derivatives of formula (I): in which R1, R2, R3 and R4 represent, independently of each other, a hydrogen atom, a linear or branched C1-C6 alkyl group, a —C(═O)—H group or a —COOH group, by heterogeneous catalytic oxidation of furfural or a derivative thereof of formula (II). The oxidation is carried out in the presence of a supported catalyst based on gold nanoparticles, and in a non-alkaline aqueous medium. A composition useful in the method includes at least furfural and supported gold nanoparticles.

公开(公告)号：US20220339610A1

公开(公告)日：2022-10-27

申请号：US17639136

申请日：2020-08-25

申请人： VERSALIS S.P.A. ,  ALMA MATER STUDIORUM - UNIVERSITA' DI BOLOGNA

发明人： Juliana VELASQUEZ OCHOA ,  Fabrizio CAVANI ,  Irene TOSI ,  Erika FARCI ,  Nicola VECCHINI

IPC分类号： B01J27/20 ,  C07C1/24 ,  B01J21/12 ,  B01J37/08

摘要： A catalyst having coke wherein the coke, upon analysis by infrared spectroscopy in diffuse reflection, has at least two peaks at a wavelength between 1450 cm−1 and 1700 cm−1.
The aforesaid catalyst having coke can be advantageously used in a process for the production of a diene, preferably a conjugated diene, more preferably 1,3-butadiene, said process having the dehydration of at least one alkenol having a number of carbon atoms greater than or equal to 4.
Preferably, the alkenol having a number of carbon atoms greater than or equal to 4 can be obtained directly from biosynthetic processes, or through catalytic dehydration processes of at least one diol.
When the alkenol is a butenol, the diol is preferably a butanediol, more preferably 1,3-butanediol, even more preferably bio-1,3-butanediol, i.e. 1,3-butanediol deriving from biosynthetic processes.
When the diol is 1,3-butanediol, or bio-1,3-butanediol, the diene obtained with the process is, respectively, 1,3-butadiene, or bio-1,3-butadiene.