US 9,751,819 B2 · Method of preparing butadiene

Abstract

The present invention relates to a method of preparing butadiene. More particularly, the present invention relates to a method of preparing butadiene by feeding butene and oxygen into a reactor containing a composite metal oxide catalyst and performing oxidative dehydrogenation, wherein a mole ratio of the oxygen to the butene is 1.8 to 2.2. In accordance with the present invention, a method of preparing butadiene to secure long-term operation stability by maintaining the intensity of a catalyst despite oxidative dehydrogenation and not to decrease selectivity due to less side reaction is provided.

Claims9

Dependent claims

A method of preparing butadiene, comprising:

feeding 1-butene, oxygen, nitrogen and steam into a reactor containing a composite metal oxide catalyst, wherein:
a mole ratio of the butene to the nitrogen is 1:10 to 30;
and
the composite metal oxide catalyst comprises a composite metal oxide of Formula 1:
Mo12Bi0.8 to 2Fe0.8 to 2Co6 to 10Cs0.01 to 0.9K0.01 to 0.5Oy [Formula 1]
wherein y is a value determined to adjust valence to other constituting elements;
and
performing oxidative dehydrogenation of the 1-butene to produce butadiene, wherein a mole ratio of the oxygen to the butene is 1.8 to 2.2.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/035,430Filed 25 Nov 2015

Priority

KR 10-2014-018133816 Dec 2014

Published

US 2016/0347685 A11 Dec 2016

Granted

5 Sep 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

C07C 5/48
By dehydrogenation with a hydrogen acceptor: with oxygen as an acceptor
B01J 23/00
Catalysts comprising metals or metal oxides or hydroxides, not provided for in
B01J 23/002
Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00: mixed oxides other than spinels, e.g. perovskite
B01J 23/8876
Containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36: arsenic, antimony or bismuth

Method of preparing butadiene

Life of this patent

Method of preparing butadiene

Life of this patent

Abstract

Claims9