公开(公告)号：US20240109823A1

公开(公告)日：2024-04-04

申请号：US18265318

申请日：2021-12-07

Applicant: CLARIANT INTERNATIONAL LTD ,  CLARIANT CATALYSTS (JAPAN) K.K.

Inventor： Felix SCHULZ ,  Hans-Christoph SCHWARZER ,  Nobuaki KODAKARI ,  Yuma KURAGUCHI ,  Takashi KUSABA

IPC: C07C5/333 ,  B01J23/89 ,  B01J35/32 ,  B01J35/50 ,  B01J37/08

CPC classification number: C07C5/3332 ,  B01J23/8993 ,  B01J35/32 ,  B01J35/50 ,  B01J37/08 ,  C07C2523/04 ,  C07C2523/10 ,  C07C2523/745

Abstract: The invention relates to a process for the production of an alkenylaromatic compound comprising the step of:



contacting a hydrocarbon stream including an alkylaromatic compound with water vapor in the presence of a dehydrogenation catalyst, suitable for the dehydrogenation of the alkylaromatic compound, in one or more consecutive reactors,

wherein the weight ratio between the water vapor and the hydrocarbon (water/hydrocarbon ratio) is from 0.4 to 1.5, wherein the dehydrogenation catalyst comprises three or more of teeth and a body, such that the cross-section of the dehydrogenation catalyst is a toothed-wheel shape, and wherein the dehydrogenation catalyst comprises, based on the total weight of the dehydrogenation catalyst components as oxides,

from 30 to 90 weight percent (wt. %) of iron calculated as Fe2O3,
from 1 to 50 wt. % of potassium calculated as K2O,
from 1 to 50 wt. % of cerium calculated as CeO2, and
from 0.01 to 1 wt. % of yttrium calculated as Y2O3. Further the invention relates to a dehydrogenation catalyst comprising:

from 30 to 90 weight percent (wt. %) of iron calculated as Fe2O3,
from 1 to 50 wt. % of potassium calculated as K2O,
from 1 to 50 wt. % of cerium calculated as CeO2, and
from 0.01 to 1 wt. % of yttrium calculated as Y2O3,

wherein the wt. % is based on the total weight of the dehydrogenation catalyst components as oxides, wherein the dehydrogenation catalyst comprises at least three teeth and a body, such that the cross-section of the dehydrogenation catalyst is a toothed-wheel shape, and a process of synthesizing such a catalyst.

公开(公告)号：US20170320803A1

公开(公告)日：2017-11-09

申请号：US14900831

申请日：2015-04-23

Applicant: CLARIANT INTERNATIONAL LTD

Inventor： Oliver RICHTER ,  Gerhard MESTL ,  David LESSER ,  Robert MARX ,  Nadine FROMM ,  Felix SCHULZ ,  Peter SCHINKE ,  Werner PITSCHI

IPC: C07C51/265 ,  B01J23/22 ,  C01G31/02 ,  C07D307/83

CPC classification number: C07C51/265 ,  B01J8/067 ,  B01J23/22 ,  B01J2208/00044 ,  B01J2208/00513 ,  B01J2208/025 ,  B01J2208/065 ,  C01G31/02 ,  C07D307/83 ,  C07D307/89

Abstract: The invention relates to a catalyst arrangement for preparing phthalic anhydride by gas-phase oxidation of aromatic hydrocarbons, which comprises a reactor having a gas inlet end for a feed gas and a gas outlet end for a product gas and also a first catalyst zone made up of catalyst bodies and at least one second catalyst zone made up of catalyst bodies, where the first catalyst zone is arranged at the gas inlet end and the second catalyst zone is arranged downstream of the first catalyst zone in the gas flow direction and the length of the first catalyst zone in the gas flow direction is less than the length of the second catalyst zone in the gas flow direction, characterized in that the first catalyst zone has a higher gap content compared to the second catalyst zone.

公开(公告)号：US20170044125A1

公开(公告)日：2017-02-16

申请号：US15305955

申请日：2015-04-23

Applicant: Clariant International Ltd.

Inventor： Oliver RICHTER ,  Gerhard MESTL ,  Felix SCHULZ ,  Werner PITSCHI ,  Nadine FROMM ,  Peter SCHINKE

IPC: C07D307/89 ,  B01J35/10 ,  B01J35/02 ,  B01J23/22

CPC classification number: C07D307/89 ,  B01J8/067 ,  B01J21/063 ,  B01J23/22 ,  B01J27/198 ,  B01J35/023 ,  B01J35/026 ,  B01J35/1014 ,  B01J2208/00044 ,  B01J2208/00513 ,  B01J2208/025

Abstract: A catalytic converter arrangement for producing phthalic anhydride by means of a gas phase oxidation of aromatic hydrocarbons, comprising a reactor with a gas inlet side for a reactant gas, a gas outlet side for a product gas, a first catalytic converter layer made of catalytic converter elements, and at least one second catalytic converter layer made of catalytic converter elements. The first catalytic converter layer is arranged on the gas inlet side, and the second catalytic converter layer is arranged downstream of the first catalytic converter layer in the gas flow direction. The catalytic converter elements have an outer layer of an active compound. The invention is characterized in that the active compound content in the first catalytic converter layer and/or in the second catalytic converter layer is below 7 wt. %, based on the total weight of the catalytic converter elements, and the ratio of the total surface of the active compound to the volume of the catalytic converter layer is preferably 10000 cm−1 to 20000 cm−1, in each catalytic converter layer.

Abstract translation: 一种催化转化器装置，用于通过芳族烃的气相氧化生产邻苯二甲酸酐，包括具有用于反应气体的气体入口侧的反应器，用于产物气体的气体出口侧，由催化转化器制成的第一催化转化器层 元件和由催化转化器元件制成的至少一个第二催化转化器层。 第一催化转化器层设置在气体入口侧，第二催化转化器层设置在气体流动方向上的第一催化转化器层的下游。 催化转化元件具有活性化合物的外层。 本发明的特征在于，第一催化转化器层和/或第二催化转化器层中的活性化合物含量低于7wt。 ％，基于催化转化元件的总重量，并且在每个催化转化器层中，活性化合物的总表面与催化转化器层的体积的比率优选为10000cm -1至20000cm -1。