US 11,389,780 B2Granted

Reaction system, catalyst and method for preparing β-phenylethanol

AssigneeWanhua Chemical Group Co., Ltd.

InventorsWei Zeng, Changsheng Chen, Yuan Li, Zaigang Yang, Hengdong Yang, Jianglin Hu, Yunhai Liu, Ke Ding, Yuanye Bao

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Abstract

Disclosed is a method for preparing β-phenylethanol. The method comprises the following steps: (1) reducing a catalyst in a reactor in advance; (2) introducing pre-heated hydrogen gas to warm the reactor to a predetermined temperature; and (3) introducing a raw material styrene oxide to perform a hydrogenation reaction so as to obtain the β-phenylethanol. The catalyst is Ni—Cu/Al2O3 nanosized self-assembled catalyst. The reactor is an ultrasonic field micro-packed bed reactor. The method of the present invention enables the selectivity of the β-phenylethanol to reach 99% or more.

Claims20

Dependent claims

A reaction system for preparing β-phenylethanol, wherein the reaction system comprises:

a micro reaction channel for loading a catalyst, wherein the micro reaction channel is a coiled tube having a microsized diameter and used as a reaction site;
a Y-shaped channel communicated with one end of the micro reaction channel, the Y-shaped channel comprising two channels, wherein the two channels of the Y-shaped channel are respectively one gas channel for introducing a gas reaction raw material and one liquid channel for introducing a liquid reaction raw material;
an outlet filtration unit communicated with the other end of the micro reaction channel, wherein the outlet filtration unit is used for preventing the catalyst in the micro reaction channel from passing through and allowing liquid product and gas to flow out;
a gas-liquid separation system communicated with the outlet filtration unit, wherein the gas-liquid separation system is used for separating the liquid product from the gas;
and
an ultrasonic field generator for applying an ultrasonic field to the micro reaction channel.

3 more elements

A catalyst for preparing β-phenylethanol, wherein the catalyst is a nanosized self-assembled catalyst with Al2O3 as a carrier, Ni element and Cu element as active components;

wherein, based on the mass of the catalyst, the content of the Ni element is 5-30 wt %;
the content of the Cu element is 0.5-3.5 wt %;
the balance is Al2O3 carrier.

Dependencies are inferred from the claim text.

Facts

Application: 16/475,839Filed 14 Mar 2017
Priority: CN 201710000984.73 Jan 2017
Published: US 2020/0298198 A124 Sep 2020
Granted: 19 Jul 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification28 codes

B01J 19/0093
Chemical, physical or physico-chemical processes in general; Their relevant apparatus: microreactors, e.g. miniaturised or microfabricated reactors
B01J 19/10
Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor: employing sonic or ultrasonic…
B01J 23/72
Of the iron group metals or copper: copper
B01J 23/755
Iron group metals: nickel