公开(公告)号：US20220332664A1

公开(公告)日：2022-10-20

申请号：US17639141

申请日：2020-08-21

Applicant: VERSALIS S.P.A.

Inventor： Roberto BUZZONI ,  Giovanni Antonio FOIS

IPC: C07C2/86 ,  C07C7/163

Abstract: A process for treating mixtures containing polyalkylaromatic hydrocarbons, intended for transalkylation processes, includes a mild reduction with hydrogen in the presence of a suitable hydrogenation catalyst. The process also relates to a transalkylation process of polyalkylaromatic hydrocarbons having the treatment.

公开(公告)号：US20210147316A1

公开(公告)日：2021-05-20

申请号：US16628052

申请日：2018-07-02

Applicant: Versalis S.p.A.

Inventor： Giovanni Antonio FOIS ,  Roberto BUZZONI

IPC: C07C1/24 ,  C07C29/145 ,  C07C37/08

Abstract: The invention relates to a process for producing olefins from alcohols by means of catalytic dehydration. More in particular, the present invention relates to a process for producing at least one olefin by dehydrating at least one alcohol having a number of carbon atoms comprised between 2 and 6, preferably comprised between 2 and 4, more preferably at least one alcohol having a number of carbon atoms of 3, even more preferably 2-propanol, in the presence of a catalytic material comprising at least one large pore zeolite in acid form, or predominantly acid form, preferably selected from the group consisting of zeolites having BEA structure, MTW structure and mixtures thereof, and preferably at least one inorganic binder, more preferably alumina. Preferably, the olefin has the same number of carbon atoms as the starting alcohol. Furthermore, preferably the olefin does not contain conjugated double bonds and more preferably the olefin is a mono-olefin. Subject matter of the present invention is also the use of the aforementioned olefin in an alkylation process of aromatic hydrocarbons, in particular the use of propylene for alkylating benzene to provide cumene. The aforementioned cumene can be used in an integrated process for preparing phenol and acetone, in accordance with the Hock method, wherein acetone can be reduced to 2-propanol, to be recycled to the process of the invention to obtain propylene again.

公开(公告)号：US20180002250A1

公开(公告)日：2018-01-04

申请号：US15544720

申请日：2016-02-22

Applicant: versalis S.p.A.

Inventor： Stefano RAMELLO ,  Vittorio MILANESI ,  Roberto BUZZONI

IPC: C07C1/24 ,  C07C29/60 ,  B01J35/10 ,  B01J21/12 ,  B01J37/00 ,  B01J37/08 ,  B01J37/30

CPC classification number: C07C1/24 ,  B01J21/08 ,  B01J21/12 ,  B01J35/1019 ,  B01J37/0018 ,  B01J37/033 ,  B01J37/08 ,  B01J37/30 ,  C07C29/60 ,  C07C2521/12 ,  C07C11/167 ,  C07C33/025 ,  C07C33/03

Abstract: Process for the production of a diene, preferably a conjugated diene, more preferably 1,3-butadiene, comprising the dehydration of at least one alkenol in the presence of at least one catalytic material comprising at least one acid catalyst based on silica (SiO2) and alumina (AI2O3), preferably a silica-alumina (SiO2-AI2O3), said catalyst having a content of alumina (AI2O3) lower than or equal to 12% by weight, preferably ranging from 0.1% by weight to 10% by weight, with respect to the total weight of the catalyst. Preferably, said alkenol can be obtained directly from biosynthesis processes, or through the catalytic dehydration of at least one diol, preferably a butanediol, more preferably 1,3-butanediol, even more preferably bio-1,3-butanediol, deriving from biosynthesis processes. Preferably, said 1,3-butadiene is bio-1,3-butadiene.

公开(公告)号：US20160297728A1

公开(公告)日：2016-10-13

申请号：US15026924

申请日：2014-10-14

Applicant: VERSALIS S.P.A.

Inventor： Elena BENCINI ,  Giovanni Antonio FOIS ,  Roberto BUZZONI

IPC: C07C2/86 ,  B01J29/70 ,  C07C29/145 ,  B01J35/10 ,  C07C409/10 ,  C07C45/53 ,  C01B39/42 ,  B01J35/02

CPC classification number: C07C2/864 ,  B01J29/7034 ,  B01J35/002 ,  B01J35/026 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1061 ,  B01J35/108 ,  B01J37/0009 ,  B01J2229/42 ,  C01B39/42 ,  C07C2/66 ,  C07C29/145 ,  C07C45/53 ,  C07C409/10 ,  C07C2523/02 ,  C07C2523/04 ,  C07C2529/70 ,  Y02P20/52 ,  C07C15/085 ,  C07C15/073 ,  C07C31/10

Abstract: The invention relates to a new catalytic composition for the alkylation of aromatic compounds with alcohols, or mixtures of alcohols and corresponding olefins, wherein said composition comprises a zeolite of the MTW type and is characterized in that it contains one or more alkaline metals in a total quantity which is less than or equal to 0.02% by weight. The use of said catalyst in the alkylation of aromatic compounds with alcohols, in particular benzene with isopropanol or ethanol, allows the formation, as by-product, of the aldehyde or ketone corresponding to the alcohol used, to be minimized: the formation of reaction by-products of said aldehydes or ketones having a boiling point very close to that of polyalkylation products, is therefore significantly reduced. This provides a considerable advantage in the subsequent transalkylation step for the recovery of said polyalkylates by transformation into the corresponding monoalkylates.

Abstract translation: 本发明涉及用醇烷基化芳族化合物或醇和相应烯烃的混合物的新的催化组合物，其中所述组合物包含MTW型沸石，其特征在于其含有一种或多种碱金属 数量小于或等于0.02重量％。 在芳族化合物与醇，特别是苯与异丙醇或乙醇的烷基化中使用所述催化剂允许作为副产物形成对应于所用醇的醛或酮的最小化：反应的形成 因此，具有非常接近于多烷基化产物的沸点的所述醛或酮的副产物显着降低。 这在随后的烷基转移步骤中通过转化成相应的单烷基化物来回收所述多烷基化物提供了相当大的优点。