公开(公告)号：US09822067B2

公开(公告)日：2017-11-21

申请号：US15116541

申请日：2015-02-03

Applicant: BASF SE

Inventor： Hermann Luyken ,  Peter Pfab ,  Tim Jungkamp

IPC: C07C253/34

CPC classification number: C07C253/34 ,  C07C209/48 ,  C07C253/10 ,  C07C255/04 ,  C07C211/12

Abstract: The present invention relates to a process for purifying adiponitrile (ADN), wherein crude ADN is introduced into a rectification apparatus (R1). The rectification apparatus (R1) comprises a first side draw and preferably also a second side draw, the first side draw being disposed below the crude ADN introduction point and the optional second side draw being disposed above the crude ADN introduction point. The first side draw is used to draw off a gaseous stream comprising ADN while the optional second side draw is used to draw off undesired by-products such as 1-amino-2-cyanocyclopentene (ACCP) which are often generated in ADN production and consequently may be present in the crude ADN. The gaseous stream from the first side draw of (R1) is introduced into a second rectification apparatus (R2). (R2) is used to separate off ADN from remaining high boilers and any other by-products present, pure ADN being drawn off from (D2) as overhead product. It is preferable when the process according to the invention employs crude ADN from a reaction of butadiene with hydrocyanic acid (HCN).

公开(公告)号：US09493405B2

公开(公告)日：2016-11-15

申请号：US14941167

申请日：2015-11-13

Applicant: BASF SE

Inventor： Tim Jungkamp ,  Robert Baumann ,  Michael Bartsch ,  Gerd Haderlein ,  Hermann Luyken ,  Jens Scheidel ,  Tobias Aechtner ,  Peter Pfab ,  Petra Deckert ,  Wolfgang Siegel ,  Peter Bassler

IPC: C07C253/30 ,  C07C253/10

CPC classification number: C07C253/30 ,  C07C253/10 ,  Y02P20/582 ,  C07C255/07

Abstract: A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) isomerizing a reactant stream which comprises 2-methyl-3-butenenitrile over at least one dissolved or dispersed isomerization catalyst to give a stream 1 which comprises the at least one isomerization catalyst, 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, (b) distilling stream 1 to obtain a stream 2 as the top product which comprises 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, and a stream 3 as the bottom product which comprises the at least one isomerization catalyst, (c) distilling stream 2 to obtain a stream 4 as the top product which, compared to stream 2, is enriched in (Z)-2-methyl-2-butenenitrile, based on the sum of all pentenenitriles in stream 2, and a stream 5 as the bottom product which, compared to stream 2, is enriched in 3-pentenenitrile and 2-methyl-3-butenenitrile, based on the sum of all pentenenitriles in stream 2, (d) distilling stream 5 to obtain a stream 6 as the bottom product which comprises 3-pentenenitrile and a stream 7 as the top product which comprises 2-methyl-3-butenenitrile.

公开(公告)号：US20140155257A1

公开(公告)日：2014-06-05

申请号：US14171868

申请日：2014-02-04

Applicant: BASF SE

Inventor： Stefan Hannemann ,  Dieter Stützer ,  Goetz-Peter Schindler ,  Peter Pfab ,  Frank Kleine Jäger ,  Dirk Großschmidt

IPC: B01J23/63

CPC classification number: B01J23/63 ,  B01J23/58 ,  B01J35/002 ,  B01J35/006 ,  B01J35/023 ,  B01J35/1014 ,  B01J37/0072 ,  B01J37/349

Abstract: The invention relates to a method of production of catalyst particles, comprising platinum and tin and also at least one further element, selected from lanthanum and cesium, on zirconium dioxide as support, comprising the steps: preparation of one or more solutions containing precursor compounds of Pt, Sn and at least one further element of La or Cs and also ZrO2, converting the solution(s) to an aerosol, bringing the aerosol into a directly or indirectly heated pyrolysis zone, carrying out pyrolysis, and separation of the particles formed from the pyrolysis gas.Suitable precursor compounds comprise zirconium(IV) acetylacetonate, lanthanum(II) acetylacetonate and cesium acetate, hexamethyldisiloxane, tin 2-ethylhexanoate, platinum acetylacetonate, zirconium(IV) propylate in n-propanol and lanthanum(II) acetylacetonate.The invention also relates to the catalyst particles obtainable using the method according to the invention, and to the use thereof as dehydrogenation catalysts.

Abstract translation: 本发明涉及一种生产催化剂颗粒的方法，其包括铂和锡以及至少一种选自镧和铯的另外的元素，二氧化锆作为载体，包括以下步骤：制备一种或多种含前体化合物的溶液 Pt，Sn和至少一种另外的La或Cs元素和ZrO 2，将溶液转化为气溶胶，使气溶胶进入直接或间接加热的热解区，进行热解，并分离由 热解气。 合适的前体化合物包括乙酰丙酮酸铑（IV），乙酰丙酮酸镧（II）和乙酸铯，六甲基二硅氧烷，2-乙基己酸锡，乙酰丙酮酸铂，丙醇锆（IV），乙酰丙酮酸镧（II）。 本发明还涉及使用根据本发明的方法获得的催化剂颗粒及其作为脱氢催化剂的用途。